UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
 FORM 10-K
 (Mark One)
ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20172023
OR
o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _______________ to _______________
Commission file number:
01-32665

BOARDWALK PIPELINE PARTNERS, LP
(Exact name of registrant as specified in its charter)
DELAWAREDelaware20-3265614
(State or other jurisdiction of incorporation or organization)
20-3265614
(I.R.S. Employer Identification No.)
9 Greenway Plaza,
Suite 2800
Houston, Texas 77046
(866) 913-2122
Houston,Texas77046
(866)913-2122
(Address and Telephone Number of Registrant’sRegistrant's Principal Executive Office)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Units Representing Limited Partner InterestsNONENONENew York Stock ExchangeNONE
Securities registered pursuant to Sectionsection 12(g) of the Act: NONE

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes Yes☒ No☐
ý No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
Yes o No ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes ý    No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
Yes ý No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large"large accelerated filer,” “accelerated" "accelerated filer,” “smaller" "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one)

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o
Emerging growth company
o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Yes
o No o
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.    ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐




Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes ¨ No ý

Boardwalk Pipeline Partners, LP meets the conditions set forth in General Instructions I(1) (a) and (b) of Form 10-K and is therefore filing this form with the reduced disclosure format.
The aggregate market value of the common units of the registrant held by non-affiliates as of
June 30, 2017, was approximately $2.2 billion. As of February 15, 2018, the registrant had 250,296,782 common units outstanding.

Documents incorporated by reference.    None.





TABLE OF CONTENTS

20172023 FORM 10-K

BOARDWALK PIPELINE PARTNERS, LP



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PART I

Item 1. Business

Unless the context otherwise requires, references in this Annual Report on Form 10-K to “we,” “our,” “us”"we," "our," "us" or like terms refer to the business of Boardwalk Pipeline Partners, LP and its consolidated subsidiaries.

Introduction

We are a Delaware limited partnership formed in 2005. Our business, which is conducted by our primary subsidiary, Boardwalk Pipelines, LP (Boardwalk Pipelines) and its operating subsidiaries as shown in the diagram below (together, the operating subsidiaries), consists of integrated pipeline and storage systems for natural gas and natural gas liquids and other hydrocarbons (herein referred to together as NGLs) pipeline and storage systems.. All of our operations are conducted by the operating subsidiaries. As of December 31, 2023, Boardwalk Pipelines Holding Corp. (BPHC), a wholly-ownedwholly owned subsidiary of Loews Corporation (Loews), owns 125.6 millionowned directly or indirectly, 100% of our common units and, through Boardwalk GP, LP (Boardwalk GP), an indirect wholly-owned subsidiary of BPHC, our 2% general partner interest and all of our incentive distribution rights (IDRs). As of February 13, 2018, the common units and general partner interest owned by BPHC represent approximately 51% of our equity interests, excluding the IDRs. Our Partnership Interests, as described in Part II, Item 5 of this Report, contains more information on how we calculate BPHC’s equity ownership. Our common units are traded under the symbol “BWP” on the New York Stock Exchange (NYSE).capital.



The following diagram reflects a simplified version of our current organizational structure:


Our Business

We are a master limited partnership operatingoperate in the midstream portion of the natural gas and NGLs industry, providing transportation and storage for those commodities. We also provide ethane supply and transportation services for industrial customers in Louisiana and Texas. We own approximately 14,33514,310 miles of natural gas and NGLs pipelines and underground storage caverns having aggregate capacity of approximately 205.0199.5 billion cubic feet (Bcf) of working natural gas and 24.531.2 million barrels (MMBbls) of NGLs. Our natural gas pipeline systems are located in the Gulf Coast region, Oklahoma, Arkansas, and the Midwestern states of Tennessee, Kentucky, Illinois, Indiana and Ohio, and our NGLs pipelines and storage facilities are located in Louisiana and Texas.

We serve a broad mix of customers, including electric power generators, producers and marketers of natural gas, local distribution companies (LDCs), marketers, electric power generators, industrial users, exporters of liquefied natural gas (LNG), and interstate and intrastate pipelines. We provide a significant portion of our natural gas pipeline transportation and storage services through firm contracts under which our customers pay monthly capacity reservation fees, which are fixed fees owedbased on the quantity of capacity reserved, regardless of actual pipeline or storage capacity utilization.use. Other fees are based on actual utilization of the capacity under firm contracts and contracts for interruptible services. Contracts for our NGLs services are generally fee-based or based oncontain a minimum volume requirements,commitment (MVC), while others are dependent on actual volumes transported, stored or stored.delivered. For the year ended December 31, 2017,2023, approximately 83%89% of our revenues were derived from capacity reservation fees under firm contracts or from contracts with MVCs, approximately 11%6% of our revenues were derived from fees based on utilization under firm contracts and approximately 6%5% of our revenues were derived from interruptible transportation, interruptible storage, parking and lending (PAL), ethane supply and other services. Part II, Item 6 of this Report contains a summary of our revenues from external customers, net income and total assets, all of which were attributable to our pipeline and storage systems operating in one reportable segment.
    
The maximum applicable rates we can charge for most of our natural gas transportation services, as well as the general terms and conditions of those services, are established by, and subject to review and revision by, the Federal Energy Regulatory Commission (FERC). These rates are based upon certain assumptions to allow us the opportunity to recover the cost of providing these services and earn a reasonable return on equity. However, it is possible that we may not recover all of our costs or earn a return. We are authorized to charge market-based rates for the majority of our natural gas storage capacity pursuant to authority granted by the FERC. The FERC also has jurisdiction over the rates, charges and terms and conditions of service for transportation on our interstate ethane transportation pipeline. The Surface Transportation Board (STB), a division of the United States (U.S.) Department of Transportation (DOT), has authority to regulate regulates the rates we charge for interstate service on certain of our ethylene pipelines, while thepipeline systems. The Louisiana Public Service Commission (LPSC) regulates the rates we charge for intrastate service within the state of Louisiana on our other NGLpetrochemical and NGLs pipelines. The STB and LPSC require that our transportation rates are reasonable and that our practices cannot unreasonably discriminate among our shippers.

On September 29, 2023, we acquired 100% of the equity interests of Williams Olefins Pipeline Holdco LLC (Bayou Ethane) from Williams Field Services Group, LLC for $355.0 million in cash. The purchase price was funded with available cash on hand.

Our Pipeline and Storage Systems

We own and operate approximately 13,88013,455 miles of interconnected natural gas pipelines, directly serving customers in thirteen states and indirectly serving customers throughout the northeastern and southeastern U.S.United States (U.S.) through numerous interconnections with unaffiliated pipelines. We also own and operate approximately 455855 miles of NGLs pipelines in Louisiana and Texas. In 2017,2023, our pipeline systems transported approximately 2.33.7 trillion cubic feet (Tcf) of natural gas and
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approximately 64.798.5 MMBbls of NGLs. Average daily throughput on our natural gas pipeline systems during 20172023 was approximately 6.410.0 Bcf. Our natural gas storage facilities are comprised of fourteen underground storage fields located in four states with aggregate working gas capacity of approximately 205.0199.5 Bcf and our NGLs storage facilities consist of nineeleven salt-dome caverns located in Louisiana with an aggregate storage capacity of approximately 24.531.2 MMBbls. We also own threenine salt-dome caverns and related brine infrastructure for use in providing brine supply services and to support the NGLs storage operations.

The principal sources of supply for our natural gas pipeline systems are regional supply hubs and market centers located in the Gulf Coast and Mid-Continent regions, including offshore Louisiana, the Perryville, Louisiana, area, the Henry Hub in Louisiana and the Carthage, Texas, area. Our pipelines in the Carthage, Texas, area provide access to natural gas supplies from the Barnett and Haynesville Shales and other natural gas producing regions in eastern Texas and northern Louisiana. The Henry Hub serves as the designated delivery point for natural gas futures contracts traded on the New York Mercantile Exchange. Our pipeline systems also have access to unconventional suppliessupply basins such as the Woodford Shaleand Scoop/Stack Shales in southeastern Oklahoma, the Fayetteville Shale in Arkansas, the Eagle Ford Shale in southern Texas and wellhead supplies in northern and southern Louisiana and Mississippi, and we also receive gas in the Lebanon, Ohio, area from the Marcellus and Utica Shales located in the northeastern U.S. Our NGLs pipeline systems access the Gulf Coast petrochemical industry through our operations at our Choctaw Hub in the Mississippi River corridor area of Louisiana and the Sulphur Hub in the Lake Charles, Louisiana, area. We also access ethylene supplies at Port Neches, Texas, which we deliver to petrochemical-industry customers in Louisiana. With the acquisition of Bayou Ethane, we also provide ethane supply and transportation services for industrial customers in Louisiana and Texas. In providing supply services, Bayou Ethane purchases ethane at Mont Belvieu, Texas, and various locations in Louisiana and utilizes its pipeline to deliver supply to its customers.

The following is a summary of each of our principal operating subsidiaries:

Gulf South Pipeline Company, LPLLC (Gulf South): Our Gulf South pipeline system is located along the Gulf Coast in the states of Oklahoma, Texas, Louisiana, Mississippi, Alabama and Florida. The on-system markets directly served by the Gulf South system


are generally located in eastern Texas, Louisiana, southern Mississippi, southern Alabama and the Florida Panhandle. Gulf South also services the Perryville Exchange. These markets include LNG export markets in the Freeport, Texas, area, power plants, LDCs and municipalities located across the system, including New Orleans, Louisiana; Jackson, Mississippi; Mobile, Alabama; Houston, Texas; and Pensacola, Florida, and other end-users located across the system, including those located in the Baton Rouge to New Orleans industrial corridor and Lake Charles, Louisiana. Gulf South also has indirect access to off-system markets through numerous interconnections with unaffiliated interstate and intrastate pipelines and storage facilities. These pipeline interconnections provide access to markets throughout the northeastern, midwestern and southeastern U.S.

Gulf South has ten natural gas storage facilities. The two natural gas storage facilities located in Bistineau, Louisiana, and Jackson, Mississippi, have approximately 83.578.0 Bcf of working gas storage capacity from which Gulf South offers firm and interruptible storage service, including no-notice service (NNS), and are used to support pipeline operations. Gulf South also owns and operates eight high deliverability salt-dome natural gas storage caverns in Forrest County, Mississippi, having approximately 46.0 Bcf of total storage capacity, of which approximately 29.6 Bcf is working gas capacity, and owns undeveloped land which is suitable for up to five additional storage caverns. 

Texas Gas Transmission, LLC (Texas Gas): Our Texas Gas pipeline system is a bi-directional pipeline located in Louisiana, East Texas, Arkansas, Mississippi, Tennessee, Kentucky, Indiana and Ohio, with smaller diameter lines extending into Illinois. Texas Gas directly serves LDCs, municipalities and power generators in its market area, which encompasses eight states in the South and Midwest and includes the Memphis, Tennessee; Louisville, Kentucky; Cincinnati and Dayton, Ohio; and Evansville and Indianapolis, Indiana, metropolitan areas. Texas Gas also has indirect market access to, and receives supply from, the Northeast through interconnections with unaffiliated pipelines. A large portion of the gas delivered by the Texas Gas system is used for heating during the winter months, but Texas Gas also supplies gas for cooling needs during the summer months.

Texas Gas owns nine natural gas storage fields, of which it owns the majority of the working and base gas. Texas Gas uses this gas to meet the operational requirements of its transportation and storage customers and the requirements of its NNS customers. Texas Gas also uses its storage capacity to offer firm and interruptible storage services.

Gulf Crossing Pipeline Company LLC (Gulf Crossing):Our Gulf Crossing pipeline system is located near Sherman, Texas, and proceeds to the Perryville, Louisiana, area. The market areas are in the Midwest, Northeast and Southeast, including Florida, through interconnections with Gulf South, Texas Gas and unaffiliated pipelines.

Boardwalk Louisiana Midstream, LLC, and Boardwalk Petrochemical Pipeline, LLC and Boardwalk Ethane Pipeline Company, LLC (collectively, Louisiana Midstream):
Louisiana Midstream provides transportation and storage services for natural gas, NGLs and ethylene, ethane supply services, fractionation services for NGLs and brine supply services for producers and consumers of petrochemicals through two hubs in southern Louisiana - the Choctaw Hub in the Mississippi River Corridor corridor
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area and the Sulphur Hub in the Lake Charles area. These assets provide approximately 78.047.9 MMBbls of salt-dome storage capacity, including approximately 7.6 Bcf of working natural gas storage capacity; significant brine supply infrastructure; and approximately 290310 miles of pipeline assets, including an extensive ethylene distribution system. Louisiana Midstream also owns and operates the Evangeline Pipeline, (Evangeline), an approximately 180-mile180-mile interstate ethylene pipeline that is capable of transporting approximately 2.64.2 billion pounds of ethylene per year between Port Neches, Texas, and Baton Rouge, Louisiana, where it interconnectswith interconnections with the ethylene distribution system and storage facilities at the Sulphur and Choctaw Hub.Hubs. Louisiana Midstream also owns and operates the Bayou Ethane Pipeline, an approximately 380-mile pipeline system originating in Mont Belvieu, Texas, that transports ethane to Southeast Texas and to the Mississippi River corridor in Louisiana. The Bayou Ethane Pipeline provides interstate and intrastate transportation services, with interconnections with the NGL storage facilities at the Sulphur and Choctaw Hubs. The Bayou Ethane Pipeline has the ability to deliver approximately 55.0 MMBbls of ethane per year shared between customers in Texas and Louisiana. Throughput for Louisiana Midstream was 64.798.5 MMBbls for the year ended December 31, 2017.

2023, including Bayou Ethane Pipeline's throughput of 9.2 MMBbls from the date of acquisition.
Boardwalk Texas Intrastate, LLC (Texas Intrastate):
Texas Intrastate provides intrastate natural gas transportation services on pipelines located in South Texas extending on the west side from Bee County, near the Eagle Ford Shale, and Agua Dulce to the Corpus Christi area and to an interconnect with Gulf South in Jackson County, Texas. Texas Intrastate is situated to provide access to industrial and liquefied natural gas (LNG) export markets in the Corpus Christi area, proposed power plants and third-party pipelines for exports to Mexico.


The following table provides information for our principal pipeline and storage systems as of February 15, 2018:December 31, 2023:

Pipeline and Storage Systems Miles of Pipeline Working Gas Storage Capacity (Bcf) Liquids Storage Capacity (MMBbls) 
Peak-day Delivery Capacity (Bcf/d) (1)
 
Average Daily Throughput (Bcf/d) (1)
Gulf South 7,275
 113.1
 
 8.3
 2.8
Texas Gas 5,980
 84.3
 
 5.6
 2.4
Gulf Crossing 375
 
 
 1.9
 1.1
Louisiana Midstream 470
 7.6
 24.5
 
 
Texas Intrastate 235
 
 
 
 0.1

Pipeline and Storage SystemsMiles of PipelineWorking Gas Storage Capacity (Bcf)Liquids Storage Capacity (MMBbls)
Peak-day Delivery Capacity (Bcf/d) (1)
Average Daily Throughput (Bcf/d) (1)
Gulf South7,210 107.6 — 10.9 6.5 
Texas Gas5,970 84.3 — 6.1 3.3 
Louisiana Midstream870 7.6 31.2 — — 
(1) Bcf per day (Bcf/d)

Current Growth Projects

In response to changes in the natural gas industry and growth in the petrochemical industry,2023, we have been engaged in several growth projects. Several of these growth projects were placed into service in 2016, including the Ohio to Louisiana Access project, the Southern Indiana Lateral, the Western Kentucky Market Lateral and a power plant project in South Texas. In 2017, the Northern Supply Access Project and portionsapproximately $166.0 million of our Coastal Bend Header and Sulphur Storage and Pipeline Expansiongrowth projects were placed into service. In 2018, we signed a precedent agreement for a new project on our Gulf South system that will serve a proposed power plant in Texas. The project will providewhich represents approximately 0.20.3 Bcf/d of firm natural gas transportation service by adding compression at an existing compressor stationcapacity and constructing a lateral. The cost of this project is expected to be approximately $100.0additional capacity on our ethylene pipeline systems. As discussed above, in 2023 we also acquired Bayou Ethane for $355.0 million and has a proposed in-service date of 2020. This project remains subject to customary approvals. In 2018, wein cash. We expect to incur capital expenditures ofspend approximately $430.0$310.0 million related toon our growth projects which primarily consistcurrently under constructionthrough 2025. These projects are expected to add another approximately 0.5 Bcf/d of the final portions of the Coastal Bend Header project and a gas treating project in Texas and the following projects in Louisiana: three ethylene transportation and storage projects to serve industrial customers, the development of storage wells and associated infrastructure for brine supply services and twofirm natural gas transportation capacity and additional NGLs capacity. These projects are expected to serve increased natural gas demand from power plants.generation plants and liquids demand frompetrochemical facilities. All of our growth projects are secured by long-term firm contracts.

Refer to Liquidity and Capital Resources in Part II, Item 77. of this Annual Report on Form 10-K for further discussion of capital expenditures and financing.

Nature of Contracts
 
We contract with our customers to provide transportation, storage and storageethane supply services on both a firm and interruptible basis. We also provide bundled firm transportation and storage services, such as NNS, and interruptible PAL services, for our natural gas customers and brine supply services for certain petrochemical customers and fractionation services.

Transportation Services: We offer natural gas transportation services on both a firm and interruptible basis. Our natural gas customers choose, based upon their particular needs, the applicable mix of services depending upon the availability of pipeline capacity, the price of services and the volume and timing of customer requirements. Our natural gas firm transportation customers reserve a specific amount of pipeline capacity at specified receipt and delivery points on our system. Firm natural gas customers generally pay feesThe transaction price for firm service contracts is comprised of a fixed fee based on the quantity of capacity reserved, regardless of use (capacity reservation fee), plus variable fees in the form of a commodity and a fuel chargeusage fee paid on the volume of natural gascommodity actually transported.transported or injected and withdrawn from storage. Capacity reservation revenues derived from a firm service contract are generally consistent during the contract term, but can be higher in winter periods than the rest of the year, especially for NNS agreements. Firm transportation contracts generallycan range in term from one to twenty years, although we may enter into shorter- or longer-term contracts. In providing interruptible natural gas transportation service,services to customers, we agree to transport natural gas or NGLs for a customer when capacity is available. Interruptible natural gas transportation service customers pay a commodity charge only for the volume of gas actually transported, plus a fuel charge. Interruptible transportation agreements have terms ranging from day-to-day to multiple years, with rates that change on a daily, monthly or seasonal basis. Our NGLs transportation services are generally fee-based or based on minimum volume requirements.contain a MVC.
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Storage and Parking and Lending Services: We offer natural gas and NGLs storage services on both a firm and interruptible basis. Firm storage customers reserve a specific amount of storage capacity, including injection and withdrawal rights, while interruptible customers receive storage capacity and injection and withdrawal rights when available. Similar to firm transportation customers, firm storage customers generally pay fees based on the quantity of capacity reserved plus an injection and withdrawal fee. Firm storage contracts


typically range in term from one to ten years. Interruptible storage customers pay for the volume of gas actually stored plus injection and withdrawal fees. Generally, interruptible storage agreements are for monthly terms. We are able to charge market-based rates for the majority of our natural gas storage capacity pursuant to authority granted by the FERC. Our NGLs storage rates are market-based, and the contracts for NGLs services are typically fixed-price arrangements with escalation clauses. PAL is an interruptible service offered to customers providing them the ability to park (inject) or borrow (withdraw) natural gas into or out of our pipeline systems at a specific location for a specific period of time. Customers pay for PAL services in advance or on a monthly basis depending on the terms of the agreement.

No-Notice Services: NNS consist of a combination of firm natural gas transportation and storage services that allow customers to inject or withdraw natural gas from storage with little or no notice. Customers pay a reservation charge based upon the capacity reserved plus a commodity and a fuel charge based on the volume of gas actually transported. In accordance with its tariff, Texas Gas loans stored gas to certain of its no-notice customers who are obligated to repay the gas in-kind.

ParkingEthane Supply Services: We offer ethane supply services on a firm basis, typically with a MVC, and Lending Service:services with a stated volume with any volume supplied above the stated volume provided based on product availability. The pricing contained in the purchase and sales agreements associated with our ethane supply services is generally based on the same ethane commodity index, plus a fixed delivery fee. As a result, except for possible timing differences that may occur when volumes are purchased in one month and sold in another month, we have little to no direct commodity price exposure.

Other Product Sales: PAL is an interruptible service offered to customers providing them the ability to park (inject) or borrow (withdraw)We occasionally sell natural gas into or out ofand NGLs based upon our pipeline systems at a specific locationavailable inventory for a specific period of time. Customers pay for PAL services in advance or on a monthly basis depending on the terms of the agreement.sale and market conditions.

Customers and Markets Served

We contract directly with end-use customers, including electric power generators, LDCs, industrial users and exporters of LNG. We also contract with other customers, including producers and marketers of natural gas, and with end-use customers, including LDCs, marketers, electric power generators, industrial users and interstate and intrastate pipelines, who, in turn, provide transportation and storage services for end-users. Based onExcluding product sales, based upon our 20172023 transportation, storage, PAL and PALother revenues, net of fuel, our customer mix was as follows: power generators (22%), natural gas producers (46%(22%), power generators (17%marketers (21%), LDCs (17%(15%), marketers (13%industrial end-users (12%) and industrial end-users and others (7%exporters of LNG (8%). BasedExcluding product sales, based upon our 20172023 transportation, storage, PAL and PALother revenues, net of fuel, our deliveries were as follows: pipeline interconnects (50%(31%), power generators (17%), LDCs (18%(16%), industrial end-users (11%), power generators (10%(15%), storage activities (11%), exporters of LNG (8%) and others (3%(2%). Our deliveries related to our ethane supply services were to industrial end-users. No customer comprisescomprised 10% or more of our 2017 operating revenues.revenues in 2023.

Power Generators: Our natural gas pipelines are directly connected to 43 natural-gas-fired power generation facilities in eight states. The demand of the power generating customers generally peaks during the summer cooling season which is counter to the winter season peak demands of the LDCs, although demand from power generators remains strong in the winter months as well, due to the overall increase in the use of natural gas over other sources, such as coal, to generate electricity. Our power generating customers can use a combination of NNS, firm and interruptible transportation services.

Natural Gas Producers: Producers of natural gas use our services to transport gas supplies from producing areas, including shale natural gas production areas, to supply pools and to other customers on and off of our systems. Producers contract with us for storage services to store excess production and to optimize the ultimate sales prices for their gas.

Power Generators: Our natural gas pipelines are directly connected to 47 natural-gas-fired power generation facilities in nine states. The demand of the power generating customers generally peaks during the summer cooling season which is counter to the winter season peak demands of the LDCs, although recently we have begun to see an increase in demand from power generators in the winter months as well, due to the overall increase in the use of natural gas over other sources, such as coal, to generate electricity. Our power-generating customers can use a combination of NNS, firm and interruptible transportation services.
Local Distribution Companies: Most of our LDC customers use firm natural gas transportation services, including NNS. We serve approximately 173 LDCs at more than 300 delivery locations across our pipeline systems. The demand of these customers peaks during the winter heating season.
Natural Gas Marketers: Natural gas marketing companies utilize our services to provide services to our other customer groups as well as to customer groups in off-system markets. The services may include combined gas transportation and storage services to support the needs of the other customer groups. Some of the marketers are sponsored by LDCs or producers.

Local Distribution Companies: Most of our LDC customers use firm natural gas transportation services, including NNS. We serve 160 LDCs at more than 300 delivery locations across our pipeline systems. The demand of these customers peaks during the winter heating season.

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Industrial End-Users: We provide approximately 188215 industrial facilities with a combination of firm and interruptible natural gas and NGLs transportation, storage and storageethane supply services. Our pipeline systems are directly connected to industrial facilities in the Baton Rouge to New Orleans industrial corridor; Lake Charles, Louisiana; Mont Belvieu, Texas; Mobile, Alabama; Ingleside, Texas; and Pensacola, Florida. We can also access the Houston Ship Channel through third-party natural gas pipelines.

Competition

Exporters of LNG: LNG exporters use our firm transportation services to reach LNG liquefaction and export facilities. We compete with numerous other pipelines that provide transportation, storage and other services at many locations along our pipeline systems. We also compete with pipelines that are attached to natural gas supply sources that are closer to some1.4 Bcf/d of our traditional natural gas market areas. In addition, regulators’ continuing efforts to increase competition in the natural gas industry have increased thefirm natural gas transportation options of our traditional customers. For example, as a result of regulators’ policies, capacity segmentationservice directly to the Freeport LNG liquefaction and capacity release have created an active secondaryexport facility in Freeport, Texas.

Our delivery market which increasingly competeshas diversified over time, with our own natural gas pipeline services. Further, natural gas competes with other forms of energy availableincreased deliveries to our end-use customers, including electricity, coal, fuel oils andwhereas historically, our delivery markets were primarily to other alternative fuel sources.

The principal elementspipelines who then delivered to the end-use customers. As of competition among pipelinesDecember 31, 2023, we had approximately $9.7 billion of projected operating revenues under committed firm agreements, of which our deliveries are availability of capacity, rates, terms of service, accessexpected to gas supplies, flexibility and reliability of service.In many cases, the elements of competition, in particular, flexibility, terms of service


and reliability, are key differentiating factors between competitors. This is especially the case with capacity being sold on a longer-term basis. We are focused on finding opportunities to enhance our competitive profile in these areas by increasing the flexibility of our pipeline systems, suchbe as modifying them to allow for bi-directional flows, to meet the demands of customers such asfollows: power generators (29%), pipeline interconnects (24%), exporters of LNG (18%), industrial end-users (13%), LDCs (8%), storage activities (6%) and industrial users, and are continually reviewing our services and terms of service to offer customers enhanced service options.others (2%).

Seasonality

Our revenues can be affected by weather, natural gas price levels, gas price differentials between locations on our pipeline systems (basis spreads), gas price differentials between time periods, such as winter to summer (time period price spreads), and natural gas price volatility. Weather impacts natural gas demand for heating needs and power generation, which in turn influences the short-term value of transportation and storage across our pipeline systems. Colder than normal winters can result in an increase in the demand for natural gas for heating needs and warmer than normal summers can impact cooling needs, both of which typically result in increased pipeline transportation revenues and throughput. While traditionally peak demand for natural gas occurs during the winter months driven by heating needs, the increased use of natural gas for cooling needs during the summer months has partially reduced the seasonality of our revenues. During 2017, approximately 53% of our operating revenues were recognized in the first and fourth quarters of the year.

Government Regulation

Federal Energy Regulatory Commission: The FERC regulates our interstate natural gas transmission operating subsidiaries under the Natural Gas Act of 1938 (NGA) and the Natural Gas Policy Act of 1978 (NGPA). The FERC regulates, among other things, the rates and charges for the transportation and storage of natural gas in interstate commerce and the construction, extension, enlargement or abandonment of facilities under its jurisdiction. Where required, our interstate natural gas pipeline subsidiaries hold certificates of public convenience and necessity issued by the FERC covering certain of their facilities, activities and services. The FERC also prescribes accounting treatment for our interstate natural gas pipeline subsidiaries which is separately reported pursuant to forms filed with the FERC. The regulatory books and records and other activities of our subsidiaries that operate under the FERC's jurisdiction may be periodically audited by the FERC.

The maximum applicable rates that may be charged by our FERC-regulated operating subsidiaries that operate under the FERC's jurisdictionmay charge for all aspects of the natural gas transportation services they provide are established through the FERC’s cost-of-serviceFERC's cost-based rate-making process.process; however, the FERC also allows for discounted or negotiated rates as an alternative to cost-based rates. Key determinants in the FERC’s cost-of-serviceFERC's cost-based rate-making process are the costs of providing service, the volumes of gas being transported, the rate design, the allocation of costs between services, the capital structure and the rate of return a pipeline is permitted to earn. The maximum applicable rates that may be charged by us for storage services on Texas Gas, with the exception ofexcept for services associated with a portion of the working gas capacity on that system, are also established through the FERC’s cost-of-serviceFERC's cost-based rate-making process. The FERC has authorized us to charge market-based rates for firm and interruptible storage services for the majority of our other natural gas storage facilities. None of our FERC-regulated entities hascurrently have an obligation to file a new rate case, and Gulf South is prohibited from filing a rate case until May 1, 2023, subject to certain exceptions.case.

Texas Intrastate transportsSome of our other subsidiaries transport natural gas in intrastate commerce under the rules and regulations established by the Texas Railroad Commission and in interstate commerce that is subject to FERC jurisdiction under Section 311 of the NGPA. The maximum rates for services are established under Section 311 of the NGPA and are generally subject to review every five years by the FERC. The rates and terms of service on our interstate ethane transportation pipeline are also subject to regulation by the FERC under, among other statutes, the Interstate Commerce Act (ICA) and the Energy Policy Act of 1992.

Over time, the FERC may change, amend or announce that it will undertake a review of its existing policies. There were no major policy changes announced by the FERC during 2023.

The FERC has authority to impose civil penalties for violations of the NGA and NGPA, and the implementing regulations thereunder, up to a maximum amount that is adjusted annually for inflation, which for 2024 is approximately $1.5 million per day per violation. Should we fail to comply with applicable statutes, rules, regulations and orders administered by the FERC, we could be subject to substantial penalties and fines, in addition to reputational damage.

Surface Transportation Board and Louisiana Public Service Commission: The STB regulates the rates we charge for interstate service on our ethylene pipeline systems. The LPSC regulates the rates we charge for intrastate service within the state of Louisiana on our petrochemical and NGL pipelines. The STB and LPSC require that our transportation rates are reasonable and that our practices cannot unreasonably discriminate among our shippers.

U.S. Department of Transportation:Transportation (DOT): We are regulated by the DOT, through the Pipeline and Hazardous MaterialMaterials Safety Administration (PHMSA), under the Natural Gas Pipeline Safety Act of 1968, as amended (NGPSA), and the Hazardous Liquids Pipeline Safety Act of 1979, as amended (HLPSA). The NGPSA and HLPSA govern the design,
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installation, testing, construction, operation, replacement and management of interstate natural gas and NGLs pipeline facilities. We have received authority from PHMSA to operate certain natural gas pipeline assets under specialissued permits with specific conditions that will allow us to operate those pipeline assets at higher than normal operating pressures of up to 0.80 of the pipe’spipeline's Specified Minimum Yield Strength (SMYS). Operating at higher than normal operatingthese pressures allows us to transport all of the existing natural gas volumes we have contracted for on those facilities with our customers. PHMSA retains discretion whether to grant or maintain authority for us to operate our natural gas pipeline assets at higher pressures and, in the event that PHSMAPHMSA should elect not to allow us to operate at these higher pressures, it could affect our ability to transport all of our contracted quantities of natural gas on these pipeline assets, and we could incur significant additional costs to reinstate this authority or to develop alternate ways to meet our contractual obligations. PHMSA hasPHMSA's regulations also developed regulations that require transportation pipeline operators to implement integrity management programs to comprehensively evaluate certain high risk areas, known as high consequence areas (HCAs) and moderate consequence areas (MCAs), along our pipelines and take additional safety measures to protect people and property in these areas. The HCAs for natural gas pipelines are predicated on high-population density areas (which, for natural gas transmission lines, include Class 3 and 4 areas and, depending on the eventpotential impacts of a release to protectrisk event, may include Class 1 and 2 areas) whereas HCAs along our NGL pipelines are based on high-population density areas, areas near certain drinking water sources and unusually sensitive ecological areas.

Legislation has resulted in more stringent mandates for pipeline segments located in those areas, which include highly populated areas. Thesafety and has charged PHMSA with developing and adopting regulations that impose increased pipeline safety requirements on pipeline operators. In particular, the NGPSA and HLPSA were amended by the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 (2011 Act), the Protecting Our Infrastructure of Pipelines and Enhancing Safety Act of 2016 (2016 Act) and, most recently, the Protecting Our Infrastructure of Pipelines and Enhancing Safety Act of 2020 (2020 Act). Each of these laws imposed increased pipeline safety obligations on pipeline operators. The 2011 Act increased the penalties for safety violations, established additional safety requirements for newly constructed pipelines and required


studies of safety issues that could result in the adoption of new regulatory requirements by PHMSA for existing pipelines. In JuneThe 2016 the NGPSA and HLPSA were amended by the Protecting Our Infrastructure of Pipelines and Enhancing Safety Act, of 2016 (2016 Act), extending PHMSA’s statutory mandate through 2019 and, among other things, requiringrequired PHMSA to complete certain of its outstanding mandates under the 2011 Act and developingdevelop new safety standards for natural gas storage facilities. The 2020 Act reauthorized PHMSA through fiscal year 2023 and directed the agency to move forward with several regulatory initiatives, including obligating operators of non-rural gas gathering lines and new and existing transmission and distribution pipeline facilities by June 22, 2018. Theto conduct certain leak detection and repair programs and to require facility inspection and maintenance plans to align with those requirements.

As a result of the 2011 Act, the 2016 Act and the 2020 Act, PHMSA has issued a series of significant rulemakings. In October 2019, PHMSA published a final rule imposing numerous new requirements on onshore gas transmission pipelines, also empowersknown as the Mega Rule, relating to maximum allowable operating pressure (MAOP) reconfirmation and exceedance reporting, the integrity assessment of additional pipeline mileage found in MCAs and Class 3 and Class 4 non-HCAs by 2033, and the consideration of seismicity as a risk factor in integrity management. PHMSA published a second final rule in October 2019 for hazardous liquid transmission and gathering pipelines that significantly extends and expands the reach of certain of its integrity management requirements, and that requires the accommodation of in-line inspection tools by 2039 unless the pipeline cannot be modified to address imminent hazards by imposing emergency restrictions, prohibitionspermit such accommodation, increased annual, accident and safety-related conditional reporting requirements, and expanded use of leak detection systems beyond HCAs. Certain aspects of that rule are currently in court review. PHMSA also published final rules during February and July 2020 that amended the minimum safety measures on ownersrequirements related to natural gas storage facilities, including wells, wellbore tubing and casing, and added applicable reporting requirements. In June 2021, PHMSA issued an Advisory Bulletin advising pipeline and pipeline facility operators of applicable requirements to update their inspection and maintenance plans for the elimination of hazardous leaks and minimization of natural gas or hazardous liquidreleased from pipeline facilities without prior notice orfacilities. PHMSA and state regulators reportedly began their review of these plans in 2022, and in May 2023, published a proposed rule that would enhance requirements for detecting and repairing leaks on new and existing natural gas distribution, gas transmission and gas gathering pipelines. In August 2022, PHMSA published another final rule expanding the Management of Change process, extending corrosion control requirements for gas transmission pipelines, adding requirements that operators ensure no conditions exist following an opportunityextreme weather event that could adversely affect the safe operation of the pipeline, and adopting repair criteria for non-HCAs similar to those applicable to HCAs. In September 2023, PHMSA published a hearing. PHMSA issued interim final regulations in October 2016proposed rule that would enhance the safety requirements for gas distribution pipelines and would require updates to implement the agency's expanded authority to address unsafe pipeline conditions or practices that pose an imminent hazard to life, property or the environment. New laws ordistribution integrity management programs, emergency response plans, operations and maintenance manuals and other safety practices. These new and any future regulations adopted by PHMSA have imposed and may impose more stringent requirements applicable to integrity management programs and other pipeline safety aspects of our operations, which could cause us to incur increased capital and operating costs and operational delays.

Transportation Safety AdministrationSurface: In 2022 and 2023, the Department of Homeland Security's Transportation BoardSafety Administration (TSA) issued a series of security directives applicable to pipeline owners and Louisiana Public Service Commission: operators intended to strengthen the industry's overall cybersecurity posture in light of the evolving threat landscape and its potential impacts to critical U.S. infrastructure. The STB has authority to regulate the rates we charge for service on certain of our ethylene pipelines, while the LPSC regulates the rates we charge for service on oursecurity directives require, among other NGL pipelines. The STBthings, that pipeline owners and LPSC require that our transportation rates are reasonable and that our practices cannot unreasonably discriminate among our shippers.operators designate a
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cybersecurity coordinator, establish and implement a Cybersecurity Implementation Plan; develop, maintain and test no less than annually through tabletop exercises a Cybersecurity Incident Response Plan; and establish a Cybersecurity Assessment Plan (CAP) including a schedule for assessing and auditing the CAP. The directives also contain requirements for reporting cybersecurity incidents and the results of certain assessments and audits. We have implemented tools, policies and practices designed to comply with the security directives. Other regulators, such as PHMSA and the Securities and Exchange Commission (SEC), have also established requirements for reporting cybersecurity incidents.

Other: Our operations are also subject to extensive federal, state, and local laws and regulations relating to protection of the environment and occupational health and safety. Such laws and regulations impose, among other things, restrictions, liabilities and obligations in connection with the generation, handling, use, storage, transportation, treatment and disposal of various substances, including hazardous substances and waste, and in connection with spills, releases, discharges and emissions of various substances into the environment. Environmental regulations also require that our facilities, sites and other properties be operated, maintained, abandoned and reclaimed to the satisfaction of applicable regulatory authorities. Occupational health and safety regulations establish standards protective of workers, both generally and within the pipeline industry. These laws, as amended from time to time, that our operations are subject to, include, for example:
the Clean Air Act (CAA) and analogous state laws, which impose obligations related toregulate air emission pollutants, greenhouse gas (GHG) emissions and regulations affecting reciprocating engines subject to Maximum Achievable Control Technology standards;
the Federal Water Pollution Control Act, commonly referred to as the Clean Water Act, and analogous state laws, which establish the extent to which waterways are subject to federal or state jurisdiction and serve to regulate the discharge of wastewater from our facilities into state and federal waters;
the Comprehensive Environmental Response, Compensation and Liability Act, commonly referred to as CERCLA, or the Superfund law, and analogous state laws, which regulate the cleanup of hazardous substances that may have been released at properties currently or previously owned or operated by us or locations to which we have sent hazardous substance wastessubstances for disposal;
the Resource Conservation and Recovery Act (RCRA) and analogous state laws, which impose requirements for the generation, handling,storage, treatment, transportation and disposal of solid and hazardous wastes at or from our facilities;
the Endangered Species Act (ESA), which restricts activities that may affect federally identified endangered and threatened species or their habitats by the implementation of operating restrictions or a temporary, seasonal or permanent ban in affected areas;
the National Environmental Policy Act (NEPA), which requires federal agencies to evaluate major agency actions having the potential to impact the environment and that may require the preparation of environmental assessments and more detailed environmental impact statements that may be made available for public review and comment; and
the Occupational Safety and Health Act (OSHA) and analogous state laws, which establish workplace standards for the protection of the health and safety of employees, including the implementation of hazard communications programs designed to inform employees about hazardous substances in the workplace, potential harmful effects of these substances and appropriate control measures.

Many states and local governments where we operate also have, or are developing, similar environmental or occupational health and safety legal requirements governing many of the same types of activities, and those requirements can be more stringent than those adopted under federal laws and regulations. Failure to comply with these federal, state, and local laws and regulations may result in the assessment of administrative, civil and criminal penalties, the imposition of corrective or remedial obligations, the incurrence of capital expenditures, the occurrence of delays, denials or cancellations in permitting or in the development or expansion of projects and the issuance of orders enjoining performance of some or all of our operations in affected areas.

President Biden continues to pursue additional action to bolster environmental regulations which may impact our operations. For example, the Biden Administration has revised various rules to be more stringent, repealed various rules issued by the Trump Administration, and has announced forthcoming actions or released proposed or final rules regarding restrictions on methane emissions from oil and gas operations, ground level ozone emission standards, and Nationwide Permit (NWP) 12. The Biden Administration has also signaled a strong focus on directing agency action to mitigate climate change and further limit GHG emissions. In January 2023, the White House's Council on Environmental Quality (CEQ) released guidance to assist federal agencies in assessing the GHG emissions and climate change effects of their proposed actions under the NEPA. The guidance followed the publication of a final rule in April 2022 revoking some modifications made to the regulations under the Trump Administration and reincorporating consideration of direct, indirect, and cumulative effects of major federal actions. In July 2023, the CEQ announced another proposed rule which revises the implementing regulations of the procedural provisions
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of NEPA and implements amendments to NEPA included in the Fiscal Responsibility Act of 2023. The final rule is expected in the second quarter of 2024. The CEQ's guidance, effective upon publication, alongside the proposed and final rules, could result in additional challenges to NEPA reviews performed in connection with our projects, which in turn could result in further permitting and approval delays. For more information, see Item 1A. Risk Factors—Business Risks—"Our operations, and those of our customers, are subject to a series of risks regarding climate change."
Stricter environmental or worker safety laws, regulations or enforcement policies could significantly increase our operational or compliance costs and compliance with new or more stringent environmental legal requirements could delay or prohibit our ability to obtain permits for operations or require us to install additional pollution control equipment. For instance, the construction or expansion of pipelines often requires authorizations under the Clean Water Act, which authorizations may be subject to challenge. For instance, there is ongoing litigation with respect to the status and use of the U.S. Army Corps of Engineers (the Corps) Clean Water Act Section 404 NWP 12, which was vacated in April 2020. In January 2021, the Corps reissued a restructured NWP 12 for oil and natural gas pipeline activities. In March 2022, the Corps announced it was seeking stakeholder input on a formal review of NWP 12, although while this review is ongoing, the Corps has resumed permitting decisions. NWP 12, alongside other NWPs, relies upon the Clean Water Act Section 401 certification process, which is also subject to ongoing litigation. In October 2021, the Northern District of California federal court vacated a 2020 rule revising the Section 401 certification process. The Supreme Court stayed the vacatur of Section 404 of NWP 12 and, in September 2023, the Environmental Protection Agency (EPA) finalized its Clean Water Act Section 401 Water Quality Certification Improvement Rule, effective on November 27, 2023. While the full extent and impact of these actions is unclear at this time, any disruption in our ability to obtain coverage under NWP 12 or other permits may result in increased costs and project delays if we are forced to seek individual permits from the Corps. There also continues to be uncertainty with respect to the federal government's jurisdictional reach under the Clean Water Act over "waters of the United States", including wetlands, as the EPA and the Corps have pursued multiple rulemakings under different administrations since 2015 in an attempt to determine the scope of such reach. In December 2022, the Biden Administration finalized a new and more expansive definition of "waters of the United States," which repealed the Trump Administration's April 2020 rule and largely restored the definition in place prior to 2015, with modifications reflecting Supreme Court decisions issued after 2015. In January 2023, the EPA and the Corps released a final revised definition of "waters of the United States" founded upon the pre-2015 regulations. Judicial developments also add to this uncertainty. The Supreme Court opinion in Sackett v. EPA invalidated certain parts of the January 2023 rule, resulting in a revised rule being issued in September 2023. However, due to injunctions in certain states, the implementation of the September 2023 rule currently varies by state. For more information, see Item 1A. Risk Factors—Business Risks— "Failure to comply with environmental or worker safety laws and regulations or an accidental release of pollutants into the environment may cause us to incur significant costs and liabilities."

Historically, our environmental compliance costs have not had a material adverse effect on our results of operations, but there can be no assurance that continuedfuture compliance with existing requirements will not materially affect us or that the current regulatory standards will not become more onerous in the future, resulting in more significant costs to maintain compliance orand increased exposure to significant liabilities, which could diminish our ability to make distributions to our unitholders.

Effects of Compliance with Environmental Regulations

liabilities. Note 46 in Part II, Item 88. of this Annual Report on Form 10-K contains information regarding environmental compliance.



Climate Change
Employee Relations
Climate change continues to attract considerable public, governmental and scientific attention. As a result, numerous proposals have been made and are likely to continue to be made at the international, national, regional, state and local levels of government to monitor and limit emissions of GHGs. These efforts have included consideration of cap-and-trade programs, carbon taxes and GHG reporting and tracking programs, and regulations that directly limit GHG emissions from certain sources. Due to the nature of our business, our operations emit various types of GHGs. We seek to carefully monitor our emissions and expect to incur additional costs to mitigate emissions. New legislation or regulations could increase the costs related to operating and maintaining our facilities. Depending on the particular law, regulation or program, we could be required to incur capital expenditures for installing new monitoring equipment or emission controls on our facilities, acquire and surrender allowances for GHG emissions, pay taxes or fees related to GHG emissions and/or administer and manage a more comprehensive GHG emissions program. While we may be able to include some or all of the increased costs in the rates charged by our pipelines, recovery of costs is not certain and would require the FERC's approval of a rate mechanism designed to recover those costs.

We recognize that relative to certain other fossil fuels, natural gas has an important role in reducing GHG emissions and may act as a bridge to scaling up renewable energy or other alternative energy sources in the U.S. While we are seeking to reduce our GHG emissions, we cannot predict all risks that may be associated with climate change or other environmental, social and governance (ESG) matters. For more information, please see Item 1A. Risk Factors—Business Risks—"Our
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operations, and those of our customers, are subject to a series of risks regarding climate change" and "Increased attention to climate change, environmental, social and governance matters and conservation measures may adversely impact our business."

Human Capital
At December 31, 2017,2023, we had approximately 1,260 employees, approximately 11095 of whom arewere included inunder collective bargaining units.agreements. A satisfactory relationship exists between management and labor. We maintain various defined contribution plans covering substantially allour employees. As of December 31, 2023, women comprised approximately 21% of our workforce and held 23% of our management roles (considered vice president and above). As of December 31, 2023, minorities comprised 13% of our workforce and held 11% of our management roles.

Hiring and retaining qualified people is critical to our long-term strategic success. We have programs in place that seek to help employees build their knowledge, skills and various other plans whichexperience, as well as to guide their career development. A cornerstone of our human capital strategy is our commitment to fostering a diverse and inclusive work environment, where employees are respected and encouraged to contribute their ideas. We believe that employing individuals with different backgrounds and experiences helps meet the diverse needs of our stakeholders.

We are part of a critical infrastructure industry whose customers and communities depend upon us to provide regular activesafe and reliable service. Our employees with medical, lifeare essential to ensuring we continue to meet these objectives, and disability coverage.we consider safety in our day-to-day activities to be a primary core value. We want every person who lives near or works on our facilities to stay safe every day by also have a non-contributory, defined benefit pension plan and a postretirement medical plan which covers Texas Gas employees hired priormaintaining our strong commitment to certain dates. Note 11 in Part II, Item 8 of this Report contains further information regarding our employee benefits.safety.

Available Information

Our website is located at www.bwpmlp.comwww.bwpipelines.com. We make available free of charge through our website our Annual Reports on Form 10-K, which include our audited financial statements, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (Exchange Act) as soon as reasonably practical after we electronically file such material with the Securities and Exchange Commission (SEC).SEC. These documents are also available at the SEC's Public Reference Room at 100 F Street, NE, Washington, District of Columbia 20549 or aton the SEC's website at www.sec.gov. You can obtain additional information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Additionally, copies of these documents, excluding exhibits, may be requested at no cost by contacting Investor Relations, Boardwalk Pipeline Partners, LP, 9 Greenway Plaza, Suite 2800, Houston, TX 77046.
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We also make available within the “Governance” section of our website our corporate governance guidelines, the charter of our Audit Committee and our Code of Business Conduct and Ethics. Requests for copies may be directed in writing to: Boardwalk Pipeline Partners, LP, 9 Greenway Plaza, Suite 2800, Houston, TX 77046, Attention: Corporate Secretary.

Interested parties may contact the chairpersons of any of our Board committees, our Board’s independent directors as a group or our full Board in writing by mail to Boardwalk Pipeline Partners, LP, 9 Greenway Plaza, Suite 2800, Houston, TX 77046, Attention: Corporate Secretary. All such communications will be delivered to the director or directors to whom they are addressed.

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Item 1A. Risk Factors
 
Our business faces many risks and uncertainties. We have described below the most significantmaterial risks facing us. These risks and uncertainties could lead to events or circumstances that may have a material adverse effect on our business, financial condition, results of operations or cash flows, includingflows. There may be additional risks that we do not yet know of or that we do not currently perceive to be as material that may also materially adversely affect our ability to make distributions to our unitholders.business, financial condition, results of operations or cash flows.

All of the information included in this Annual Report on Form 10-K and any subsequent reports we may file with the SEC or make available to the public should be carefully considered and evaluated before investing in any securities issued by us.

Business Risks

Our natural gas transportation and storage operations and ethane transportation services are subject to extensive regulation by the FERC, including rules and regulations related to the rates we can charge for our services and our ability to construct or abandon facilities. We may not be able to replace expiringrecover the full cost of operating our pipelines, including earning a reasonable return.

Our natural gas transportation contracts at attractiveand storageoperations are subject to extensive regulation by the FERC, including the types, rates and terms of services we may offer to our customers, construction of new facilities, creation, modification or onabandonment of services or facilities and recordkeeping and relationships with affiliated companies. An adverse FERC action in any of these areas could affect our ability to compete for business, construct new facilities, offer new services or recover the full cost of operating our pipelines, including earning a long-term basisreasonable return. This regulatory oversight can result in longer lead times to develop and complete any future project than competitors that are not subject to the FERC's regulations. The FERC can also deny us the right to abandon certain facilities from service.

The FERC regulates the rates we can charge for our natural gas transportation and storage and interstate ethane transportation operations. For our cost-based services, the FERC establishes both the maximum and minimum rates we can charge. The basic elements that the FERC considers are the costs of providing service, the volumes of gas being transported, the rate design, the allocation of costs between services, the capital structure and the rate of return a pipeline is permitted to earn. We may not be able to sell short-term services at attractiverecover our costs, including certain costs associated with pipeline integrity, through existing or future rates.

The FERC and/or our customers could challenge the maximum applicable rates or at all due to market conditions.

Each year, a portionthat any of our firmregulated pipelines can charge in accordance with Section 5 of the NGA. Adoption of potential legislation that would amend Section 5 of the NGA to add refund provisions could increase the likelihood of such a challenge. If such a challenge is successful for any of our pipelines or if our rates are found not to be just and reasonable, then the revenues associated with transportation and storage services the pipeline provides pursuant to cost-of-service rates could materially decrease in the future, which would adversely affect, perhaps substantially, the revenues on that pipeline going forward.

Over time, the FERC may change, amend or announce that it will undertake a review of its existing policies. There were no major policy changes announced by the FERC during 2023.

The FERC has authority to impose civil penalties for violations of the NGA and NGPA, and the implementing regulations thereunder, up to a maximum amount that is adjusted annually for inflation, which for 2024 is approximately $1.5 million per day per violation. Should we fail to comply with applicable statutes, rules, regulations and orders administered by the FERC, we could be subject to substantial penalties and fines, in addition to reputational damage. The rates and terms of service on our interstate ethane transportation pipeline are also subject to regulation by the FERC under, among other statutes, the ICA and the Energy Policy Act of 1992.

Our operations, and those of our customers, are subject to a series of risks regarding climate change.

The threat of climate change continues to attract considerable attention in the U.S. and in other countries. Numerous proposals have been made and could continue to be made at the international, national, regional, state and local levels of government to monitor, limit and eliminate both existing and future emissions of GHGs. These proposals expose our operations as well as the operations of our fossil fuel producer customers to a series of regulatory, political, litigation and financial risks.

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In the U.S., no comprehensive climate change legislation has been implemented at the federal level, but President Biden has shown that action to address climate change is an important part of his Administration's agenda. For example, in August 2022, the Inflation Reduction Act of 2022 (IRA) passed which advanced numerous climate-related objectives. Additionally, the EPA has issued several rules regulating GHGs following the U.S. Supreme Court finding that GHGs are air pollutants under the CAA and the EPA's own endangerment finding for certain GHGs, including carbon dioxide and methane. The EPA regulates GHGs through various requirements, including permitting for GHG emissions from large stationary sources, annual reporting on GHG emissions from oil and gas facilities, New Source Performance Standards restricting methane emissions from new facilities in the natural gas transportation contracts expiresector, and needGHG emissions limits on vehicles (together with the DOT). The EPA's regulation of methane emissions has undergone significant changes. In December 2023, the EPA finalized its methane rules for new, modified, and reconstructed facilities, known as OOOOb, as well as standards for existing sources for the first time ever, known as OOOOc. Under the final rules, states have two years to prepare and submit their plans to impose methane emission controls on existing sources. The presumptive standards established under the final rules are generally the same for both new and existing sources and include enhanced leak detection survey requirements using optical gas imaging and other advanced monitoring to encourage the deployment of innovative technologies to detect and reduce methane emissions, reduction of emissions by 95% through capture and control systems, zero-emission requirements for certain devices, and the establishment of the "super emitter" response program that would allow third parties to make reports to the EPA of large methane emission events, triggering certain investigation and repair requirements. Fines and penalties for violations of these rules can be replacedsubstantial. It is likely that the final rules and its requirements will be subject to legal challenges. Compliance with the new rules may affect the amount we owe under the IRA, which amended the CAA to impose a first-time fee on the emission of methane from sources required to report their GHG emissions to the EPA. The methane emissions fee applies to excess methane emissions from certain facilities and starts at $900 per metric ton of leaked methane in 2024 and increases to $1,200 in 2025 and $1,500 in 2026 and thereafter. Compliance with the EPA's new final rules and standards would exempt an otherwise covered facility from the requirement to pay the methane fee. The requirements of the EPA's final methane rules could increase our operating costs and the costs of our customers, thereby adversely affecting our operations.

Governmental entities, including certain states and groups of states, have adopted or renewed. Overare considering legislation, regulations or other initiatives, such as GHG cap-and-trade programs, carbon taxes, GHG reporting and tracking programs, and emissions limits. At the past several years,international level, in February 2021 the U.S. rejoined the Paris Agreement, which requires member nations to submit non-binding GHG emissions reduction goals every five years. In April 2021, President Biden announced a new target for the U.S. to reduce GHG emissions 50%-52% from 2005 levels by 2030. In November 2021, the U.S. joined other nations for the 26th Conference of the Parties to the United Nations Framework Convention on Climate Change (COP26), during which nations including the U.S. made various commitments, including the Global Methane Pledge to reduce methane emissions 30% from 2020 levels by 2030. In December 2023, at the 28th Conference of the Parties to the United Nations Framework Convention on Climate Change (COP28), certain parties signed onto an agreement to transition "away from fossil fuels in energy systems in a just, orderly, and equitable manner" and increase renewable energy capacity so as a resultto achieve net zero by 2050, although no timeline for doing so was set. The impact of current market conditions, wethe Paris Agreement, COP26, COP28 or other international conventions cannot be predicted at this time, and it is unclear what additional initiatives may be adopted or implemented, or whether similar efforts at future climate conferences will be successful and the potential resultant impact this may have renewed some expiring contracts at lower ratesupon our business or for shorter terms thanfinancial condition.

Governmental, scientific and public concern over the threat of climate change arising from GHG emissions has resulted in increasing political risks in the past. In additionU.S. The Biden Administration and future administrations could take various actions to normal contract expirations, in the 2018 to 2020 timeframe, transportation agreements associated with our Gulf South, Texas Gascurtail oil and Gulf Crossing Pipeline expansion projects, which were placed into service in 2008 and 2009, will expire. These projects were large, new pipeline expansions that were developed to serve growing production in Texas, Oklahoma and Louisiana and anchored primarily by ten-year firm transportation agreements with producers and priced based on then current market conditions. As the terms of these remaining expansion contracts expire in 2018 through 2020, we will have significantly more transportation contract expirations than we have had during the past several years. If these contracts are renewed, we expect that the new contracts will be at lower rates and for shorter contract terms than the contracts they are replacing. If these contracts are renewed at current market rates, the revenues earned from these transportation contracts would be materially lower than they are today. For a discussion of current developments, refer to Part II, Item 7, Firm Transportation Agreements.

The narrowing of the price differentials between natural gas supplies and market demand for natural gas has reduced the transportation rates that we can charge.

The transportation rates we are able to charge customers are heavily influenced by market trends (both short and longer term), including the available supply, geographical location of natural gas production the competition between producing basins, competition with other pipelinesand transportation, including limiting fracturing of oil and natural gas wells, restricting flaring and venting during natural gas production on federal properties, limiting or banning oil and gas leases on federal lands and offshore waters, increasing requirements for supplyconstruction and markets, the demand for gas by end-users such as power plants, petrochemical facilitiespermitting of pipeline infrastructure and LNG export facilities, and further restricting GHG emissions from oil and gas facilities. For example, on January 26, 2024, President Biden announced a temporary pause on pending decisions on new exports of LNG to countries that the price differentials betweenU.S. does not have free trade agreements with, pending Department of Energy review of the gas suppliesunderlying analyses for authorization. Litigation risks are also increasing, as a number of cities and other governmental entities have brought suit alleging that fossil fuel producers created public nuisances by producing fuels that contributed to global warming effects such as rising sea levels, are responsible for associated roadway and infrastructure damage, or defrauded investors or customers by failing to timely and adequately disclose adverse effects of climate change.

There are also increasing financial risks for fossil fuel energy companies as investors become increasingly concerned about the potential effects of climate change and may elect in the future to shift some or all of their investments into non-fossil fuel energy related sectors. Some institutional lenders who provide financing to fossil fuel energy companies also have become more attentive to sustainable lending practices that favor alternative power sources (such as wind, solar, geothermal, tidal and biofuels), making those sources more attractive, and some of them may elect not to provide funding for fossil fuel energy companies. Many of the largest U.S. banks have made "net zero" carbon emission commitments and have announced that they
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will be assessing financed emissions across their portfolios and taking steps to quantify and reduce those emissions. At COP26, the Glasgow Financial Alliance for Net Zero announced that commitments from over 450 firms across 45 countries had resulted in over $130.0 trillion in capital committed to net zero goals. Financial institutions could be required to adopt policies that limit funding for fossil fuel energy companies. In October 2023, the Federal Reserve, Office of the Comptroller of the Currency and the marketFederal Deposit Insurance Corp. released a finalized set of principles guiding financial institutions with $100.0 billion or more in assets on the management of physical and transition risks associated with climate change. While we cannot predict what additional developments may arise from these various actions, a material reduction in the capital available to the fossil fuel industry could make it more difficult to secure funding for exploration and production or midstream energy business activities, which could adversely impact our business and operations. Additionally, in March 2022, the SEC released a proposed rule that would establish a framework for the reporting of climate risks, targets and metrics. A final rule is expected to be released in 2024, but we cannot predict the final form and substance of the rule and its requirements. The ultimate impact of the rule on our business is uncertain and, upon finalization, may result in increased compliance costs and increased costs of and restrictions on access to capital. Separately, the SEC has also announced that it is scrutinizing existing climate-change related disclosures in public filings, increasing the potential for enforcement if the SEC were to allege that an issuer's existing climate disclosures are misleading or deficient. These agency actions could increase the potential for litigation.

The adoption and implementation of new or more stringent international, federal, regional, state or local legislation, regulations or other initiatives that impose more stringent standards for GHG emissions from the oil and gas sector or otherwise restrict fossil fuel production could result in increased costs of compliance for fossil fuel use, and reduce demand for fossil fuels, which could reduce demand for our transportation and storage services. Political, litigation and financial risks may result in our fossil fuel producer customers restricting or canceling production activities, incurring liability for infrastructure and other damages as a result of climatic changes, or impairing their ability to continue to operate in an economic manner, which also could reduce demand for our services. Moreover, the increased competitiveness of alternative energy sources could reduce demand for hydrocarbons and for our services. Finally, we may also be subject to various physical risks from climate change. For more information on these physical risks, see our risk factor titled "Climatic conditions and events could adversely impact our operations, pipelines and facilities, or those of our customers or suppliers."

Increased attention to climate change, environmental, social and governance matters and conservation measures may adversely impact our business.

Increasing attention to climate change, societal expectations on companies to address climate change, investor and societal expectations regarding ESG matters and disclosures, and consumer demand for alternative forms of energy may result in increased costs, reduced demand for our services, reduced profits, increased investigations and litigation, and negative impacts on our access to capital markets. Increasing attention to climate change and environmental conservation, for example, may result in demand shifts for oil and natural gas (basis differentials). Current marketproducts and additional governmental investigations and governmental and private litigation and other liabilities imposed against us or our customers. It is possible that such liability could be imposed without regard to our causation of or contribution to the asserted damage, or to other mitigating factors.

While we may publish voluntary disclosures regarding ESG matters from time to time, many of the statements in those disclosures may not be material and may be based on expectations and assumptions that may not be representative of actual risks or events or forecasts of expected risks or events. Such expectations and assumptions are necessarily uncertain and may be prone to error or subject to misinterpretation given the long timelines involved and the lack of an established single approach to identifying, measuring and reporting on many ESG matters.

Organizations that provide information to investors on corporate governance and related matters have developed ratings processes for evaluating companies on their approach to ESG matters, and many of these rating processes are inconsistent with each other. Such ratings are used by some investors to inform their investment and voting decisions. Unfavorable ESG ratings and recent activism directed at shifting funding away from companies with energy-related assets could lead to increased negative investor sentiment toward us and our industry and to the diversion of investment to other industries, which could have a negative impact on our access to and costs of capital. Institutional lenders may decide not to provide funding for fossil fuel energy companies based on climate-change related concerns, which could affect our access to capital.

In addition, other stakeholders, including customers, employees, regulators, credit rating agencies and suppliers, have also been focused on ESG matters. Companies that do not adapt to or comply with investor or other stakeholder expectations and standards, which are evolving, or that are perceived to have not responded appropriately to the growing concern regarding ESG issues, regardless of whether there is a legal requirement to do so, may suffer from reputational damage and other adverse consequences. Additionally, to the extent ESG matters negatively impact our reputation, we may not be able to compete as effectively to recruit or retain employees, which may adversely affect our operations.
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Public statements with respect to ESG matters, such as emissions reduction goals, other environmental targets, or other commitments addressing certain social issues, are becoming increasingly subject to heightened scrutiny from public and governmental authorities related to the risk of potential "greenwashing," i.e., misleading information or false claims overstating potential ESG benefits. For example, in March 2021, the SEC established the Climate and ESG Task Force in the Division of Enforcement to identify and address potential ESG-related misconduct, including greenwashing. Certain non-governmental organizations and other private actors have also filed lawsuits under various securities and consumer protection laws alleging that certain ESG-statements, goals, or standards were misleading, false, or otherwise deceptive. As a result, we may face increased litigation risks from private parties and governmental authorities related to our ESG efforts. In addition, any alleged claims of greenwashing against us or others in our industry may lead to further negative sentiment and diversion of investments. Additionally, we could face increasing costs as we attempt to comply with and navigate further ESG-related regulatory focus and scrutiny.

Climatic conditions and events could adversely impact our operations, pipelines and facilities, or those of our customers or suppliers.

Climatic events can cause disruptions to, delays in or suspension of our services, by interrupting our operations, causing loss of or damage to our facilities or equipment, or having similar impacts on our customers or third-party suppliers. In general, our operations could be significantly impacted by climatic conditions such as increased frequency and severity of storms, floods and wintry conditions. Our pipeline operations along coastal waters and offshore in the Gulf of Mexico could be adversely impacted by climatic conditions such as rising sea levels, subsidence and erosion, which could result in serious damage to our facilities and affect our ability to provide transportation services. Such damage could result in leakage, migration, releases or spills from our operations and could result in liability, remedial obligations or otherwise have a negative impact on operations. Such climactic conditions could also impact our customers' ability to utilize our services and third-party suppliers' ability to provide us with the products and services necessary to maintain operation of our facilities. We may incur significant damages as well as costs to repair or maintain our facilities, which could adversely affect our operations and the financial health of our business. In recent years, local governments and landowners in Louisiana have filed lawsuits against energy companies, alleging that their operations contributed to increased coastal rising seas and erosion and seeking substantial damages. Changing meteorological conditions, particularly temperature, may affect the amount, timing, or location of demand for energy or the products we transport, which may impact demand for our services.

We are subject to reputational risks and risks related to public opinion.

Our business, operations and financial condition may be adversely impacted as a result of negative public opinion. We operate in an industry which receives negative portrayals and opposition to development projects. Our reputation and public opinion could be impacted by the actions, activities and responses of other companies operating in the energy industry, particularly other energy infrastructure providers, over which we have no control. Our reputation also could be impacted by negative publicity related to pipeline incidents, unpopular expansion projects and opposition to development of hydrocarbons and energy infrastructure, particularly projects involving resources that are considered to increase GHG emissions and contribute to climate change. Negative impacts from a compromised reputation or changes in public opinion (including with respect to the production, transportation and use of hydrocarbons generally) could include increased regulatory oversight, delays in obtaining, or challenges to, regulatory approvals with respect to growth projects, blockades, project cancellations, difficulty securing financing at reasonable terms, revenue loss or a reduction in customer base.

Failure to comply with environmental or worker safety laws and regulations or an accidental release of pollutants into the environment may cause us to incur significant costs and liabilities.

Our operations are subject to extensive federal, state, and local laws and regulations relating to protection of the environment and occupational health and safety. Such laws and regulations impose, among other things, restrictions, liabilities and obligations in connection with the generation, handling, use, storage, transportation, treatment and disposal of various substances, including hazardous substances and waste, and in connection with spills, releases, discharges and emissions of various substances into the environment. These laws include, for example, the CAA, the Clean Water Act, CERCLA, the RCRA, ESA, NEPA, OSHA and analogous state laws. These laws and regulations may restrict or impact our business activities, including requiring the acquisition or renewal of permits or other approvals to conduct regulated activities, restricting the manner in which we handle or dispose of wastes, imposing remedial obligations to remove or mitigate contamination resulting from a spill or other release, requiring capital expenditures to comply with pollution control requirements and imposing safety and health criteria addressing worker protection. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including the assessment of monetary penalties, the imposition of remedial requirements, the incurrence of capital expenditures, the occurrence of delays, denials or cancellations in
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the permitting or performance or expansion of projects and the issuance of orders enjoining future operations in a particular area. Under certain of these environmental laws and regulations, we could be subject to joint and several strict liability for the removal or remediation of previously released pollutants or property contamination regardless of whether we were responsible for the release or contamination or if our operations were not in compliance with applicable laws. We may not be able to recover some or any of the costs incurred from insurance.

Stricter environmental or worker safety laws, regulations or enforcement policies could significantly increase our operational or compliance costs and compliance with new or more stringent environmental legal requirements could delay or prohibit our ability to obtain permits for operations or require us to install additional pollution control equipment. For instance, the construction or expansion of pipelines often requires authorizations under the Clean Water Act, which authorizations may be subject to challenge. For instance, there is ongoing litigation with respect to the status and use of the Corps Clean Water Act Section 404 NWP 12, which was vacated in April 2020. In January 2021, the Corps reissued a restructured NWP 12 for oil and natural gas pipeline activities. In March 2022, the Corps announced it was seeking stakeholder input on a formal review of NWP 12, although while this review is ongoing, the Corps has resumed permitting decisions. NWP 12, alongside other NWPs, relies upon the Clean Water Act Section 401 certification process. The Supreme Court stayed the vacatur of Section 404 of NWP 12 and, in September 2023, the EPA finalized its Clean Water Act Section 401 Water Quality Certification Improvement Rule, effective on November 27, 2023. While the full extent and impact of these actions is unclear at this time, any disruption in our ability to obtain coverage under NWP 12 or other permits may result in increased costs and project delays if we are forced to seek individual permits from the Corps. There also continues to be uncertainty with respect to the federal government's jurisdictional reach under the Clean Water Act over "waters of the United States," including wetlands, as the EPA and the Corps have pursued multiple rulemakings under different administrations since 2015 in an attempt to determine the scope of such reach. In December 2022, the Biden Administration finalized a new and more expansive definition of "waters of the United States," which repealed the Trump Administration's April 2020 rule and largely restored the definition in place prior to 2015, with modifications reflecting Supreme Court decisions issued after 2015. In January 2023, the EPA and the Corps released a final revised definition of "waters of the United States" founded upon the pre-2015 regulations. Judicial developments also add to this uncertainty. The Supreme Court opinion in Sackett v. EPA invalidated certain parts of the January 2023 rule, resulting in a revised rule being issued in September 2023. However, due to the injunction in certain states, the implementation of the September 2023 rule currently varies by state. See Part I, Item 1. Business—Government Regulation—Other of this Annual Report on Form 10-K for further discussion on environmental matters.

Legislative and regulatory initiatives relating to new or more stringent pipeline safety requirements or substantial changes to existing integrity management programs or withdrawal of regulatory waivers could subject us to increased capital and operating costs and operational delays.

Our interstate pipelines are subject to regulation by PHMSA, which is part of the DOT. PHMSA regulates the design, installation, testing, construction, operation and maintenance of existing interstate natural gas and NGLs pipeline facilities. PHMSA regulation currently requires pipeline operators to implement integrity management programs, including frequent inspections, remediation of certain identified anomalies and other measures to promote pipeline safety in HCAs, MCAs, Class 1 and 2 areas (depending on the potential impacts of a risk event), Class 3 and Class 4 areas, as well as in areas unusually sensitive to environmental damage and commercially navigable waterways. PHMSA has revised its standards from time-to-time. In October 2019, PHMSA published a final rule imposing numerous new requirements, also known as the Mega Rule, on onshore gas transmission pipelines relating to MAOP reconfirmation and exceedance reporting, the integrity assessment of additional pipeline mileage found in MCAs and Class 3 and Class 4 non-HCAs by 2033, and the consideration of seismicity as a risk factor in integrity management. PHMSA published a second final rule in October 2019 for hazardous liquid transmission and gathering pipelines that significantly extends and expands the reach of certain of its integrity management requirements, and that requires the accommodation of in-line inspection tools by 2039 unless the pipeline cannot be modified to permit such accommodation, increased annual, accident and safety-related conditional reporting requirements, and expanded use of leak detection systems beyond HCAs. Certain aspects of that rule are currently in court review. PHMSA also published final rules during February and July 2020 that amended the minimum safety requirements related to natural gas storage facilities, including wells, wellbore tubing and casing, and added applicable reporting requirements. In June 2021, PHMSA issued an Advisory Bulletin advising pipeline and pipeline facility operators of applicable requirements to update their inspection and maintenance plans for the elimination of hazardous leaks and minimization of natural gas released from pipeline facilities. PHMSA and state regulators reportedly began their review of these plans in 2022, and in May 2023, PHMSA published a proposed rule that would enhance requirements for detecting and repairing leaks on new and existing natural gas distribution, gas transmission, and gas gathering pipelines. In August 2022, PHMSA published another final rule expanding the Management of Change process, extending corrosion control requirements for gas transmission pipelines, adding requirements that operators ensure no conditions exist following an extreme weather event that could adversely affect the safe operation of the pipeline, and adopting repair criteria for non-HCAs similar to those applicable to HCAs. In September 2023, PHMSA published a proposed rule that would enhance the safety requirements for gas distribution pipelines and require updates to
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distribution integrity management programs, emergency response plans, operations and maintenance manuals, and other safety practices. These new and any future regulations adopted by PHMSA have imposed and may impose more stringent requirements applicable to integrity management programs and other pipeline safety aspects of our operations, which is expected to cause us to incur increased capital and operating costs, may cause us to experience operational delays and may result in potential adverse impacts to our ability to reliably serve our customers.

States have jurisdiction over certain of our intrastate pipelines and have adopted regulations similar to existing PHMSA regulations. State regulations may impose more stringent requirements than found under federal law that affect our intrastate operations. Compliance with these rules over time generally has resulted in a sustained narrowingan overall increase in our maintenance costs. The imposition of new or more stringent pipeline safety rules applicable to natural gas or NGL pipelines, or any issuance or reinterpretation of guidance from PHMSA or any state agencies, could cause us to install new or modified safety controls, pursue additional capital projects or conduct maintenance programs on an accelerated basis, differentialsany or all of which could result in us incurring increased capital and operating costs, experiencing operational delays and suffering potential adverse impacts to our operations or our ability to reliably serve our customers. Requirements that are imposed under the 2011 Act, the 2016 Act, the 2020 Act or other pipeline safety legislation or implementing regulations, may also increase our capital and operating costs or impact the operation of our pipelines. See Part I, Item 1. Business—Government RegulationU.S. Department of Transportation of this Annual Report on Form 10-K for further discussion on pipeline safety matters.
We have entered into certain portionsfirm transportation contracts with shippers that utilize the design capacity of certain of our pipeline system, which has reduced transportation rates that can be charged inassets, based upon the affected areas and adversely affectedauthority we received from PHMSA to operate those pipelines at higher than normal operating pressures of up to 0.80 of the contract terms we can secure frompipeline's SMYS under issued permits with specific conditions. PHMSA retains discretion to withdraw or modify this authority. If PHMSA were to withdraw or materially modify such authority, it could affect our customers for available transportation capacity and for contracts being renewed or replaced. The prevailing market conditions may also lead someability to transport all of our customerscontracted quantities of natural gas on these pipeline assets and we could incur significant additional costs to seekreinstate this authority or to renegotiate existing contractsdevelop alternate ways to terms that are less attractive to us; for example, seeking a current price reduction in exchange for an extension of the contract term. We expect these market conditions to continue.

meet our contractual obligations.

Our actual construction and development costs could exceed our forecasts,forecasts; our anticipated cash flow from construction and development projects will not be immediateimmediate; and our construction and development projects may not be completed on time or at all.all.

We are and have been engaged in multiple significantseveral construction projects involving our existing assets and the construction of new facilities for which we have expended or will expend significant capital. We expect to continue to engage in the construction of additional growth projects and modifications of our system. When we build a new pipeline or expand or modify an existing facility, the design, construction and development occurs over an extended period of time, and we will not receive any revenue or cash flow from that project until after it is placed ininto commercial service. Typically,On our interstate pipelines, there are several years between when the project is announced and when customers begin using the new facilities. During this period we spend capital and incur costs without receiving any of the financial benefits associated with the projects. The construction of new assets involves regulatory (federal, state, and local), landowner opposition, environmental, activist, legal, political, materials and labor costs, as well as operational and other risks that are difficult to predict and some are beyond our control. Any of these projectsA project may not be completed on time or at all due to a variety of factors, may be impacted by significant cost overruns or may be materially changed prior to completion as a result of developments or circumstances that we are not aware of when we commit to the project, including the inability of any shipper to provide adequate credit support or to otherwise perform their obligations under any precedent agreements.project. Any of these events could result in material unexpected costs or have a material adverse effect on our ability to realize the anticipated benefits from our growth projects.



A failure in our computer systems or a cybersecurity attack on any of our computer systems, devices or telecommunications networks or those of certain third parties, could cause substantial damage and may materially adversely affect our cash flows, financial condition and ability to operate our business.

Our natural gas transportationbusiness is dependent upon our computer systems, devices and networks (operational and information technology) to collect, process and store the data necessary to conduct almost all aspects of our business, including the operation of our pipeline and storage operations are subject to extensive regulation byfacilities and the FERC, including rulesrecording and regulations related to the ratesreporting of commercial and financial information. A failure or security breach impacting our operational or information technology, or that of certain of our third-party vendors or others with whom we can charge for our services anddo business, could negatively affect our ability to constructsafely and reliably operate our assets, resulting in delays in providing services for our customers, contamination or abandon facilities. Wedegradation of the products we transport and store, damage to or destruction of our or third-party facilities, catastrophic events, injury or death to our employees or third parties, the inadvertent release of hydrocarbons or the release of confidential information, which could result in reduced revenue or unexpected costs. Despite our security measures, the information and operational technology and infrastructure we rely on may be vulnerable to attacks by third parties, such as hackers, cybercriminals, nation-states, insiders or other third parties, or breached due to human error, malfeasance or other disruptions. Any failure of our computer systems, or those of our customers, suppliers or others with whom we do business, could materially disrupt our ability to operate our business. In addition, access, disclosure or other loss
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of information or other consequences could result in legal claims or proceedings, liability under laws that protect the privacy of personal information or personally identifiable information, regulatory penalties for divulging protected information, disruption of our operations, incident response and remediation costs, damage to our reputation, and loss of confidence in our services, any or all of which could adversely affect our business.

Cybersecurity threat actors have attacked and continue to threaten energy infrastructure. The U.S. government has issued public and industry-directed warnings that indicate that energy assets might be specific targets of cybersecurity attacks, which are increasing in sophistication, magnitude and frequency. Our technologies, systems and networks, and those of our vendors, suppliers and other business partners, may become the target of cybersecurity attacks or information security breaches that could result in the unauthorized release, gathering, monitoring, misuse, corruption, manipulation, loss or destruction of proprietary and other information, significant damage to property, personal injury or loss of life, substantial financial damage or other disruption of operations.

Any investigation of a cybersecurity attack or other security incident may be inherently unpredictable and complex, and it may take significant time before the completion of any investigation and availability of full and reliable information. During such time, we may not know the extent of the harm or how best to remediate it, and certain errors or actions could be repeated or compounded before they are discovered and remediated, all or any of which could further increase the costs and consequences of a cybersecurity attack or other security incident, and our remediation efforts may not be successful. The inability to implement, maintain and upgrade adequate safeguards could materially and adversely affect our results of operations, cash flows, and financial condition. As the cybersecurity threat landscape continues to evolve, we may be required to expend significant additional resources to continue to modify or enhance our protective measures or to investigate and remediate any information security vulnerabilities. Advances in computer capabilities, discoveries in the field of artificial intelligence, cryptography, inadequate facility security or other developments may result in a compromise or breach of the technology we use to safeguard confidential, personal, or otherwise protected information. As the breadth and complexity of the technologies we use continue to grow, including as a result of the use of mobile devices, cloud services, open-source software, social media and the increased reliance on devices connected to the internet, the potential risk of cyberattacks and cybersecurity incidents also increases. No security measure is infallible. Despite ongoing efforts to improve our ability to protect our systems from compromise, we may not be able to recover the full costprotect all of operating our pipelines, including earning a reasonable return.

diverse systems. Our efforts to improve security and protect data and our systems may also identify previously undiscovered instances of security breaches or other cyber incidents.
Our natural gas transportation and storageoperations are subject to extensive regulation by the FERC, including the types and terms of services we may offer to our customers, construction of new facilities, creation, modification or abandonment of services or facilities and recordkeeping and relationships with affiliated companies. An adverse FERC action in any of these areas could affect our ability to compete for business, construct new facilities, offer new services or recover the full cost of operating our pipelines. This regulatory oversight can result in longer lead times to develop and complete any future project than competitors that are not subject to the FERC's regulations. The FERC can also deny us the right to abandon certain facilities from service.

The FERC also regulates the rates we can charge for our natural gas transportation and storage operations. For our cost-based services, the FERC establishes both the maximum and minimum rates we can charge. The basic elements that the FERC considers are the costs of providing service, the volumes of gas being transported, the rate design, the allocation of costs between services, the capital structure and the rate of return a pipeline is permitted to earn. The FERCTSA has issued a noticeseries of inquiry concerningsecurity directives applicable to pipeline owners and operators which require implementation of a variety of cybersecurity measures and reporting. Other regulators, such as PHMSA and the inclusionSEC, have also established requirements for reporting cybersecurity incidents. As cybersecurity incidents continue to evolve, more legislation could be enacted to mitigate cybersecurity threats. This will require us to expend additional resources to continue to modify or enhance our protective measures or to investigate and remediate vulnerabilities to cybersecurity incidents at significantly increased costs. Our insurance coverage for cybersecurity attacks may not be sufficient to cover all the losses or expenses we may experience or incur as a result of income taxesany cybersecurity attacks. Any cybersecurity attacks that affect our facilities or systems, or those of our customers, suppliers or others with whom we do business could have a material adverse effect on our business, cause us a material financial loss and materially damage our reputation. We cannot predict the potential impact to our business of potential future legislation, regulations or orders relating to cybersecurity.

We may face opposition to the operation of our pipelines and facilities, construction or expansion of facilities and new pipeline projects from various groups.

We may face opposition to the operation of our pipelines and facilities, construction or expansion of our facilities and new pipeline projects from governmental officials, environmental groups, landowners, communities, tribal or local groups and other advocates. Such opposition could take many forms, including organized protests, attempts to block or sabotage our operations, acts of eco-terrorism, intervention in regulatory or administrative proceedings involving our assets, or lawsuits or other actions designed to prevent, disrupt or delay the operation of our assets and business. For example, repairing our pipelines often involves securing consent from individual landowners to access their property; one or more landowners may resist our efforts to make needed repairs, which could lead to an interruption in the operation of the affected pipeline or facility for a period of time that is significantly longer than would have otherwise been the case. Acts of sabotage or eco-terrorism could cause significant damage or injury or death to people, property or the environment and lead to extended interruptions of our operations and material damages and costs.

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Market conditions, including the price differentials between natural gas supplies and market demand for natural gas, may reduce the transportation rates of an interstate pipeline that operates as a master limited partnership. The ultimate outcome of this proceeding could impact the maximum rates we can charge on certain portions of our FERC-regulated pipelines. The FERC has not finalized this proceeding.pipeline systems.

Effective December 22, 2017, the Tax CutsEach year a portion of our firm natural gas transportation contracts expire and Jobs Act changed several provisionsneed to be replaced or renewed. As a result of the federal tax code, including a reductionmarket conditions, we may renew some expiring contracts at lower rates or for shorter terms than in the maximum corporate tax rate. Since the Tax Cuts and Jobs Act was signed into law, filings have been made at the FERC requesting that the FERC require pipelines to lower theirpast. The transportation rates we are able to accountcharge customers are heavily influenced by market trends (both short and longer term), including the available supply, geographical location of natural gas production, the competition between producing basins, competition with other pipelines for lower corporate taxes. Followingsupply and markets, the effective datedemand for gas by end-users such as power plants, petrochemical facilities and LNG export facilities and the price differentials between the gas supplies and the market demand for the gas (basis differentials).

Changes in energy prices, including natural gas, oil and NGLs, impact the supply of and demand for those commodities, which impact our business.

Our customers, especially producers and certain plant operators, are directly impacted by changes in commodity prices. The prices of natural gas, oil and NGLs fluctuate in response to changes in both domestic and worldwide supply and demand, market uncertainty and a variety of additional factors, including for natural gas the law,realization of potential LNG exports and demand growth within the FERC orders granting certificates to construct proposed pipeline facilities have directed pipelines proposing new rates for service on those facilities to re-file such rates so that the rates reflect the reductionpower generation market. Volatility in the corporate tax rate,pricing levels of natural gas, oil and NGLs could adversely affect the FERC has issued data requests in pending certificate proceedings for proposed pipeline facilities requesting pipelines to explain the impactsbusinesses of the reduction in the corporate tax rate on the rate proposals in those proceedingscertain of our producer customers and to provide re-calculated initial rates for service on the proposed pipeline facilities. The FERC may enact other regulations or issue further requests to pipelines regarding the impact of the corporate tax rate change on the rates. The FERC’s establishment of a just and reasonable rate is based on many components, and the reduction in the corporate tax rate may only impact two such components, the allowance for income taxes and the amount for accumulated deferred income taxes. The FERC or our shippers may challenge our rates in the future, which could result in a new rate that may be lower thandefaults or the rates we currently charge. The FERC or our customers can challenge the existing rates on anynon-renewal of our pipelines. Such a challenge against uscontracted capacity when existing contracts expire. Commodity prices could adversely affect the operations of certain of our abilityindustrial customers, including the temporary closure or reduction of plant operations, resulting in decreased deliveries to charge rates that would cover futurethose customers. Future increases in our costs or even to continue to collect rates to maintain our current revenue levels that are designed to permit us a reasonable opportunity to recover current costs and depreciation and earn a reasonable return.

In December 2017, the FERC announced it will review its 1999 Policy Statement on Certificationprice of New Interstate Natural Gas Pipeline Facilities that is used in the determination of whether to grant certificates for new pipeline projects. We are unable to predict what, if any, changes may be proposed that will affect our natural gas pipeline business or when such proposals, if any, might become effective. We do not expect that any change in this policy would affect us in a materially different manner than any other natural gas pipeline company operating in the U.S.

Legislative and regulatory initiatives relating to pipeline safety that require the use of new or more prescriptive compliance activities, substantial changes to existing integrity management programs, or withdrawal of regulatory waivers could subject us to increased capital and operating costs and operational delays.

Our interstate pipelines are subject to regulation by PHMSA which is part of DOT. PHMSA regulates the design, installation, testing, construction, operation, replacement and management of existing interstate natural gas and NGLs pipeline facilities. PHMSA regulation currently requires pipeline operators to implement integrity management programs, including frequent inspections, correction of certain identified anomaliescould make alternative energy and other measures to promote pipeline safety in HCAs, such as high population areas, areas unusually sensitive to environmental damagefeedstock sources more competitive and commercially navigable waterways. States have jurisdiction over certain of our intrastate pipelines and have adopted regulations similar to existing PHMSA regulations. State regulations may impose more stringent requirements than found under federal law that affect our intrastate operations. Compliance with these rules over time generally has resulted in an overall increase in our maintenance costs. The imposition of new or more stringent pipeline safety rules applicable todecrease demand for natural gas or NGL pipelines, or any issuance or reinterpretationand NGLs. A reduced level of guidance from PHMSA or any state agencies with respect thereto could cause us to install new or modified safety controls, pursue additional capital projects or conduct maintenance programs on an accelerated basis, any or all of which tasks could result in us incurring increased capital and operating costs, experience operational delays, and result in potential adverse impacts to our operations or


our ability to reliably serve our customers. Requirements that are imposed under the 2011 Act or the more recent 2016 Act may also increase our capital and operating costs or impact the operation of our pipelines.
We have entered into certain firm transportation contracts with shippers on certain of our expansion projects that utilize the design capacity of certain of our pipeline assets, based upon the authority we received from PHMSA to operate those pipelines under special permits at higher than normal operating pressures of up to 0.80 of the pipeline's SMYS. PHMSA retains discretion to withdraw or modify this authority. If PHMSA were to withdraw or materially modify such authority, it could affect our ability to transport all of our contracted quantities ofdemand for natural gas and NGLs could diminish the utilization of capacity on these pipeline assetsour systems and we could incur significant additional costs to reinstate this authority or to develop alternate ways to meetreduce the demand for our contractual obligations.

services.

We are exposed to credit risk relating to default or bankruptcy by our customers.customers.

Credit risk relates to the risk of loss resulting from the default by a customer of its contractual obligations or the customer filing bankruptcy. We have credit risk with both our existing customers and those supporting our growth projects.

Natural gas producers comprise a significant portion of our revenues and support several of our growth projects, including those recently placed into service. In 2017, approximately 46% of our revenues were generated from contracts with natural gas producers. For existing customers on our interstate pipelines, our FERC gas tariffs limit the amount of credit support we can obtain. Over the past several years, the prices of oil and natural gas have been unstable. If oil and natural gas prices continue to remain unstable for a sustained period of time, our producer customers will be adversely affected, which could lead some customers to default on their obligations to us or file for bankruptcy.

Credit risk also exists in relation to our growth projects, both because the foundationexpansion customers make long-term firm capacity commitments to us for such projects and certain of those foundationexpansion customers agree to provide credit support as construction for such projects progresses. If a customer fails to post the required credit support or defaults during the growth project process, overall returns on the project may be reduced to the extent an adjustment to the scope of the project resultsoccurs or we are unable to replace the defaulting customer.customer with a customer willing to pay similar rates.

Our credit exposure also includes receivables for services provided, future performance under firm agreements and volumes of gas owed by customers for imbalances or gas loaned by us to them under certain NNS and PAL services.

We rely on a limited number of customers for a significant portion of revenues.

For 2017, while2023, no customer comprised 10% or more of our operating revenues, ourrevenues. However, the top ten customers under committed firm agreements comprised approximately 41%53% of our revenues.total projected operating revenues as of December 31, 2023. If any of our significant customers have credit or financial problems which result in bankruptcy, a delay or failure to pay for services provided by us, to post the required credit support for construction associated with our growth projects or existing contracts or to repay the gas they owe us, it could have a material adverse effect on our revenues.

Changes in energy prices, including natural gas, oil and NGLs, impact the supply of and demand for those commodities, which impact our business.

Our customers, especially producers, are directly impacted by changes in commodity prices. The prices of natural gas, oil and NGLs fluctuate in response to changes in supply and demand, market uncertainty and a variety of additional factors. The declines in the levels of natural gas, oil and NGLs prices experienced in recent history have adversely affected the businesses of our producer customers and reduced the demand for our services and could result in defaults or the non-renewal of our contracted capacity when existing contracts expire. Future increases in the price of natural gas and NGLs could make alternative energy and feedstock sources more competitive and reduce demand for natural gas and NGLs. A reduced level of demand for natural gas and NGLs could reduce the utilization of capacity on our systems and reduce the demand for our services.



Our revolving credit facility contains operating and financial covenants that may restrict our business and financing activities.

Our revolving credit facility contains operating and financial covenants that may restrict our ability to finance future operations or capital needs or to expand or pursue business activities. Our credit agreement limits our ability to make loans or investments, make material changes to the nature of our business, merge, consolidate or engage in asset sales, or grant liens or make negative pledges. This agreement also requires us to maintain a ratio of total consolidated debt to consolidated EBITDA (as defined in the credit agreement) of not more than 5.0 to 1.0, or up to 5.5 to 1.0 for the three quarters following a qualified acquisition or series of acquisitions, where the purchase price exceeds $100.0 million over a rolling 12-month period, which limits the amount of additional indebtedness we can incur to grow our business, and could require us to reduce indebtedness if our earnings before interest, income taxes, depreciation and amortization (EBITDA) decreases to a level that would cause us to breach this covenant. Future financing agreements we may enter into could contain similar or more restrictive covenants or may not be as favorable as those under our existing indebtedness.
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Our ability to comply with the covenants and restrictions contained in our credit agreement may be affected by events beyond our control, including economic, financial and market conditions. If market or economic conditions or our financial performance deteriorate, our ability to comply with these covenants may be impaired. If we are not able to incur additional indebtedness, we may need to sell additional equity securities to raise needed capital, which could be dilutive to our existing equity holders, orrequired to seek other sources of funding that may be on less favorable terms. If we default under our credit agreement or another financing agreement, significant additional restrictions may become applicable, including a restriction on our ability to make distributions to unitholders.applicable. In addition, a default could result in a significant portion of our indebtedness becoming immediately due and payable, and our lenders could terminate their commitment to make further loans to us. If such event occurs, we would not have, and may not be able to obtain sufficient funds to make these accelerated payments.

AOur indebtedness could affect our ability to meet our obligations and may otherwise restrict our activities.

As of December 31, 2023, we had $3.3 billion in principal amount of long-term debt outstanding. This level of debt requires significant portioninterest payments. Our inability to generate sufficient cash flow to satisfy our debt obligations, or to refinance our obligations on commercially reasonable terms, would have a material adverse effect on our business. Our indebtedness could have important consequences. For example, it could:
limit our ability to borrow money for our working capital, capital expenditures, debt service requirements or other general partnership purposes;
impact our ratings received from credit rating agencies;
increase our vulnerability to general adverse economic and industry conditions; and
limit our ability to respond to business opportunities, including growing our business through acquisitions.
We are permitted, under our revolving credit facility and the indentures governing our notes, to incur additional debt, subject to certain limitations under our revolving credit facility and the indentures governing the notes. If we incur additional debt, our increased leverage could also result in or exacerbate the consequences described above.

We have a holding company structure in which our subsidiaries conduct our operations and own our operating assets, which may affect our ability to fulfill our debt obligations.

We are a partnership holding company and our operating subsidiaries conduct all of our operations and own all of our operating assets. We have no significant assets other than the ownership interests in our subsidiaries. As a result, our ability to fulfill our debt will mature overobligations depends on the next five yearsperformance of our subsidiaries and will needtheir ability to distribute funds to us. The ability of our subsidiaries to make distributions to us may be paid or refinancedrestricted by, among other things, the provisions of existing and changesfuture indebtedness, applicable state partnership and limited liability company laws and other laws and regulations, including FERC policies.

Limited access to the debt markets and equity marketsincreases in interest rates could adversely affect our business.

A significant portion ofWe anticipate funding our debt is set to mature in the next five years, includingcapital and other spending requirements through our revolving credit facility. We may not be able to refinance our maturing debt on commercially reasonable terms, or at all, depending on numerous factors, including our financial condition and prospects at the time and the then current state of the banking and capital markets in the U.S.

Limited access to the debt and equity markets could adversely affect our business.

Our current strategy is to fund our announced growth projects through currently available financing options, including utilizing cash generated from operations, borrowings under our revolving credit facility accessing proceeds from our Subordinated Loan Agreement with BPHC (Subordinated Loan) and accessing the capital markets.issuances of additional debt. Changes in the debt and equity markets, including market disruptions, limited liquidity, and an increase in interest rate volatility,rates, may increase the cost of financing as well as the risks of refinancing maturing debt. Instability in the financial markets may increase our cost of capital while reducing the availability of funds. This may affect our ability to raise capitalneeded financing and reduce the amount of cash available to fund our operations or growth projects.projects or refinance maturing debt. If the debt and equity markets were not available, it is not certain if other adequate financing options would be available to us on terms and conditions that we would find acceptable.

Any disruption in the capitaldebt markets could require us to take additional measures to conserve cash until the markets stabilize or until we can arrange alternative credit arrangements or other funding for our business needs. Such measures could include reducing or delaying business activities, reducing our operations to lower expenses and reducing other discretionary uses of cash. We may be unable to execute our growth strategy or take advantage of certain business opportunities, any of which could negatively impact our business.

Climate change legislation and regulations restricting emissions of GHGs could result in increased operating and capital costs and reduced demand for our pipeline and storage services.
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Climate change continues to attract considerable public and scientific attention. As a result, numerous proposals have been made and are likely to continue to be made at the international, national, regional and state levelsPandemics or other outbreaks of government to monitor and limit emissions of GHGs. While no comprehensive climate change legislation has been implemented at the federal level, the Environmental Protection Agency (EPA) and states or groupings of states have pursued legal initiatives in recent years that seek to reduce GHG emissions through efforts that include consideration of cap-and-trade programs, carbon taxes and GHG reporting and tracking programs, and regulations that directly limit GHG emissions from certain sources such as, for example, limitations on emissions of methane through equipment control and leak detection and repair requirements.



In particular, the EPA has adopted rules that, among other things, establish certain permit reviews for GHG emissions from certain large stationary sources, which reviews could require securing permits at covered facilities emitting GHGs and meeting defined technological standards for those GHG emissions. The EPA has also adopted rules requiring the monitoring and annual reporting of GHG emissions from certain petroleum and natural gas system sources in the U.S., including, among others, onshore processing, transmission, storage and distribution facilities as well as gathering, compression and boosting facilities and blowdowns of natural gas transmission pipelines.

Federal agencies also have begun directly regulating emissions of methane, a GHG, from oil and natural gas operations. In June 2016, the EPA published a final rule requiring certain new, modified or reconstructed facilities in the oil and natural gas sector to reduce these methane gas and volatile organic compound emissions. In June 2017, the EPA proposed a rule to stay certain portions of the June 2016 rule for two years and reconsider the entirety of the 2016 rule but has not yet published a final rule and, as a result, the 2016 rule remains in effect but future implementation of that rule is uncertain at this time. As a result of a recent appellate court decision issued in 2017, the FERC may begin to take a harder look at indirect emissions of GHGs in pipeline certificate proceedings than they have historically taken. The adoption and implementation of any international, federal or state legislation or regulations that require reporting of GHGs or otherwise restrict emissions of GHGs could result in increased compliance costs or additional operating restrictions.

Recently, activists concerned about the potential effects of climate change have directed their attention at sources of funding for companies engaged in business involving fossil fuels, which has resulted in certain financial institutions, investment funds and other sources of capital restricting or eliminating their investment in oil and natural gas activities. This could make it more difficult to secure funding for exploration and production or midstream energy business activities. Despite potential risks related to climate change, the International Energy Agency estimates that global energy demand will continue to rise and will not peak until after 2040 and that oil and natural gas will continue to represent a substantial percentage of global energy use over that time. Finally, some scientists have concluded that increasing concentrations of GHG in the atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, droughts, and floods and other climate events.

We may not continue making distributions to unitholders at the current distribution rate, or at all.

The amount of cash we have available to distribute to our unitholders depends upon the amount of cash we generate from our operations, financing activities,contagious diseases and the amount of cash we require, or determinemeasures to use, for other purposes, all of which fluctuate from quarter to quarter based on a number of factors, many of which are beyond our control. Some of the factors that influence the amount of cash we have available for distribution in any quarter include:

fluctuations in cash generated by our operations, which may be affected by the seasonality ofmitigate their spread could materially adversely affect our business, timingfinancial condition and results of payments, defaults, general business conditionsoperations and market conditions that impact contract renewals, pricing, basis spreads, time period price spreads, market rates and supply and demand for natural gas and our services;

the level of capital expenditures we make or anticipate making, including for expansion, growth projects and acquisitions;

the amount of cash necessary to meet current or anticipated debt service requirements and other liabilities;

fluctuations in our working capital needs;

our ability to borrow funds and/or access capital markets on acceptable terms to fund operations or capital expenditures, including acquisitions, and restrictions contained in our debt agreements;

the cost and form of payment for pending or anticipated acquisitions and growth or expansion projects and the timing and commercial success of any such initiatives; and

unanticipated costs to operate our business, such as for maintenance and regulatory compliance.

There is no guarantee that unitholders will receive quarterly distributions from us. Our distributions are determined each quarter by the board of directors of our general partner based on the board’s consideration of our financial position, earnings, cash flow, current and future business needs and other relevant factors at the time when these decisions are made. We may reduce or eliminate distributions at any time our board determines that our cash reserves are insufficient or are otherwise required to fund current or anticipated future operations, capital expenditures, acquisitions, growth or expansion projects, debt repayment or other business needs.



A failure in our computer systems or a cybersecurity attack on any of our facilities, or those of third parties, may affect adversely our ability to operate our business.

We have become more reliant on technology to help increase efficiency in our business processes. Our businesses are dependent upon our operational and financial computer systems to process the data necessary to conduct almost all aspects of our business, including the operation of our pipeline and storage facilities and the recording and reporting of commercial and financial transactions. Any failure of our computer systems, or those of our customers, suppliers or others with whom we do business, could materially disrupt our ability to operate our business.

At the same time, the U.S. government has issued public warnings that indicate that energy assets might be specific targets of cybersecurity threats. Our technologies, systems and networks, and those of our vendors, suppliers and other business partners, may becomepartners.

The global outbreak of the targetCOVID-19 pandemic and measures to mitigate the spread of cyberattacks or information security breaches thatCOVID-19 caused unprecedented disruptions to the global and U.S. economies and impacted global demand for oil and petrochemical products. Future pandemics and other outbreaks of contagious diseases could result in similar or worse impacts and significant business and operational disruptions, including business closures, supply chain disruptions, travel restrictions, stay-at-home orders and limitations on the unauthorized release, gathering, monitoring, misuse, lossavailability of workforces. Although our operations are considered essential critical infrastructure under current Cybersecurity and Infrastructure Security Agency guidelines, if significant portions of our workforce are unable to work effectively, including because of illness or destructionquarantines or from the impacts of proprietaryany potential future pandemics and other information, oroutbreaks of contagious diseases, our business could be materially adversely affected. We may also be unable to perform fully on our contracts, and our costs may increase as a result any potential future pandemics and other disruptionoutbreaks of operations. In addition, certain cyber-incidents may remain undetected for an extended period. As cyber-incidents continue to evolve, we will likely be required to expend additional resources to continue to modify or enhance our protective measures or to investigate and remediate any vulnerability to cyber-incidents. Our insurance coverage for cyberattackscontagious diseases. These cost increases may not be sufficient to cover allfully recoverable. It is possible that future pandemics and other outbreaks of contagious diseases could cause disruption in our customers' business; cause delay, or limit the losses we may experience as a result of such cyberattacks. Any cyberattacks that affect our facilities, or thoseability of our customers suppliers or others with whom we do businessto perform, including in making timely payments to us. Future pandemics and other outbreaks of contagious diseases could impact capital markets, which may impact our customers' financial position. Future pandemics and other outbreaks of contagious diseases may also have a material adversethe effect on our business, cause us a financial loss and/or damage our reputation.of increasing several of the other risk factors contained herein.

We do not own all of the land on which our pipelines, storage and other facilities are located, which could result in disruptions to our operations.

We do not own allSubstantial portions of the land on which our pipelines, storage and other facilities have beenare constructed and maintained on property owned by others pursuant to rights-of-way, easements, permits, licenses or consents, and we are subject to the possibility of more onerous terms and/or increased costs to retain necessary land use rights if we do not have valid rights-of-wayland use rights or if such rights-of-wayland use rights lapse or terminate. We obtainSome of the rights to construct and operate our pipelines, storage or other facilities on land owned by third parties and governmental agencies that we obtain are for a specific periodperiods of time. We cannot guarantee that we will always be able to renew, when necessary, existing rights-of-wayland use rights or obtain new rights-of-wayland use rights without experiencing significant costs.costs or experiencing landowner opposition. Any loss of these land use rights with respect to the operation of our real property,pipelines, storage and other facilities, through our inability to acquire or renew right-of-way or easement contracts or permits, licenses, consents or otherwise, could have a material adverse effect on our business, results of operations, financial position and ability to make cash distributions to our unitholdersoperations.

We may not be successful in executing our strategy to grow and diversify our business.

We rely primarily on the revenues generated from our natural gas long-haul transportation and storage services. Negative developments in these services have significantly greater impact on our financial condition and results of operations than if we maintained more diverse assets. We are pursuing a strategy of growing and diversifying our business through acquisition and development of assets in complementary areas of the midstream energy sector, such as liquids transportation and storage assets. Our ability to grow, diversify and increase distributable cash flows will depend, in part, on our ability to expand our existing business lines and to close and execute on accretive acquisitions. We may not be successful in acquiring or developing such assets or may do so on terms that ultimately are not profitable. Any such transactions involve potential risks that may include, among other things:

the diversion of management's and employees' attention from other business concerns;

inaccurate assumptions about volume, revenues and project costs, including potential synergies;

a decrease in our liquidity as a result of our using available cash or borrowing capacity to finance the acquisition or project;

a significant increase in our interest expense or financial leverage if we incur additional debt to finance the acquisition or project;

inaccurate assumptions about the overall costs of equity or debt;

an inability to hire, train or retain qualified personnel to manage and operate the acquired business and assets or the developed assets;

unforeseen difficulties operating in new product areas or new geographic areas; and



changes in regulatory requirements or delays of regulatory approvals.

Additionally, acquisitions also contain the following risks:

an inability to integrate successfully the businesses we acquire;

the assumption of unknown liabilities for which we are not indemnified, for which our indemnity is inadequate or for which our insurance policies may exclude from coverage;

limitations on rights to indemnity from the seller; and

customer or key employee losses of an acquired business.

Our ability to replace expiring gas storage contracts at attractive rates or on a long-term basis and to sell short-term services at attractive rates or at all are subject to market conditions.

We own and operate substantial natural gas storage facilities. The market for the storage and PAL services that we offer is impacted by the factors and market conditions discussed above for our transportation services, and is also impacted by natural gas price differentials between time periods, such as winter to summer (time period price spreads), and the volatility in time period price spreads. When market conditions cause a narrowing of time period price spreads and a decline in the price volatility of natural gas, these factors adversely impact the rates we can charge for our storage and PAL services.

Failure to comply with environmental or worker safety laws and regulations or an accidental release of pollutants into the environment may cause us to incur significant costs and liabilities.

Our operations are subject to federal, state and local laws and regulations relating to protection of worker safety or the environment. These laws include, for example, the CAA, the Clean Water Act, CERCLA, the Resource Conservation and Recovery Act, OSHA and analogous state laws. These laws and regulations may restrict or impact our business activities, including requiring the acquisition or renewal of permits or other approvals to conduct regulated activities, restricting the manner in which we handle or dispose of wastes, imposing remedial obligations to remove or mitigate contamination resulting from a spill or other release, requiring capital expenditures to comply with pollution control requirements and imposing safety and health criteria addressing worker protection. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including the assessment of monetary penalties, the imposition of remedial requirements, the occurrence of delays in the permitting or performance or expansion of projects and the issuance of orders enjoining future operations in a particular area. Under certain of these environmental laws and regulations, we could be subject to joint and several or strict liability for the removal or remediation of previously released pollutants or property contamination regardless of whether we were responsible for the release or contamination or if our operations were not in compliance with all laws. We may not be able to recover some or any of the costs incurred from insurance. Stricter environmental or worker safety laws, regulations or enforcement policies could significantly increase our operational or compliance costs and compliance with new or more stringent environmental legal requirements could delay or prohibit our ability to obtain permits for operations or require us to install additional pollution control equipment.

Our operations are subject to catastrophic losses, operational hazards and unforeseen interruptions for which we may not be adequately insured.insured.

There are a variety of operating risks inherent in transporting and storing natural gas, ethylene and NGLs, such as leaks and other forms of releases, explosions, fires, cyber-attackscybersecurity attacks and mechanical problems, some of which could have catastrophic consequences. Additionally, the nature and location of our business may make us susceptible to catastrophic losses from hurricanes or other named storms, particularly with regard to our assets in the Gulf Coast region, cold freezes, snow storms, windstorms, earthquakes, hail and other severe winter weather. Any of these or other similar occurrences could result in the disruption of our operations, substantial repair costs, personal injury or loss of human life, significant damage to property, environmental pollution, impairment of our operations and substantial financial losses. The location of pipelines in HCAs, which includes
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populated areas, residential areas, commercial business centers and industrial sites, could significantly increase the level of damages resulting from some of these risks.

We currently possess property, business interruption, cybercybersecurity threat and general liability insurance, but proceeds from such insurance coverage may not be adequate for all liabilities or expenses incurred or revenues lost. Moreover, such insurance may not be available in the future at commercially reasonable costs and terms. The insurance coverage we do obtain may contain large deductibles or fail to cover certain events, hazards or all potential losses.



Our business requires the retention and recruitment of a skilled workforce and the loss of such workforce could result in the failure to implement our business plans.

Our operations and management require the retention and recruitment of a skilled executive team and workforce including engineers, technical personnel and other professionals. In addition, many of our current employees are approaching retirement age and have significant institutional knowledge that must be transferred to other employees. If we are unable to (a) retain our current employees, (b) successfully complete the knowledge transfer and/or (c) recruit new employees of comparable knowledge and experience, our business could be negatively impacted.

Our business is highly competitive.

The principal elements of competition among pipeline systems are availability of capacity, rates, terms of service, access to gas supplies, flexibility and reliability of service. Additionally, the FERC's policies promote competition in natural gas markets by increasing the number of natural gas transportation options available to our customer base. Increased competition could reduce the volumes of product we transport or store or, in instances where we do not have long-term contracts with fixed rates, could cause us to decrease the transportation or storage rates we can charge our customers. Competition could intensify the negative impact of factors that adversely affect the demand for our services, such as adverse economic conditions, weather, higher fuel costs and taxes or other regulatory actions that increase the cost, or limit the use, of our facilities or products we transport and store.

Possible terrorist activities or military actions could adversely affect our business.

The continued threat of terrorism and the impact of retaliatory military and other action by the U.S. and its allies might lead to increased political, economic and financial market instability and volatility in prices for natural gas, which could affect the markets for our natural gas transportation and storage services. While we are taking steps that we believe are appropriate to increase the security of our assets, we may not be able to completely secure our assets or completely protect them against a terrorist attack.

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Partnership Structure Risks

Our general partner and its affiliates own a controlling interest in us, have conflicts of interest and owe us only limited fiduciary duties, which may permit them to favor their own interests.

BPHC, a wholly-owned subsidiary of Loews, owns approximately 51% of our equity interests, excluding the IDRs, and owns and controls our general partner, which controls us. Although our general partner has a fiduciary duty to manage us in a manner beneficial to us and our unitholders, the directors and officers of our general partner have a fiduciary duty to manage our general partner in a manner beneficial to BPHC. Furthermore, certain directors and officers of our general partner are also directors or officers of affiliates of our general partner. Conflicts of interest may arise between BPHC and its subsidiaries, including our general partner, on the one hand, and us and our unitholders, on the other hand. In resolving these conflicts, our general partner may favor its own interests and the interests of its affiliates over the interests of our unitholders. These potential conflicts include, among others, the following situations:
BPHC and its affiliates may engage in competition with us;
neither our partnership agreement nor any other agreement requires BPHC or its affiliates (other than our general partner) to pursue a business strategy that favors us. Directors and officers of BPHC and its affiliates have a fiduciary duty to make decisions in the best interest of BPHC shareholders, which may be contrary to our interests;
our general partner is allowed to take into account the interests of parties other than us, such as BPHC and its affiliates, in resolving conflicts of interest, which has the effect of limiting its fiduciary duty to our unitholders;
some officers of our general partner who provide services to us may devote time to affiliates of our general partner and may be compensated for services rendered to such affiliates;
our partnership agreement limits the liability and reduces the fiduciary duties of our general partner and the remedies available to our unitholders for actions that, without these limitations, might constitute breaches of fiduciary duty. By purchasing common units, unitholders are consenting to some actions and conflicts of interest that might otherwise constitute a breach of fiduciary or other duties under applicable law;
our general partner determines the amount and timing of asset purchases and sales, borrowings, repayments of indebtedness, issuances of additional partnership securities and cash reserves, each of which can affect the amount of cash that is available for distribution to our unitholders;


our general partner determines the amount and timing of any capital expenditures and whether an expenditure is for maintenance capital, which reduces operating surplus, or a capital improvement expenditure, which does not. Such determination can affect the amount of cash that is distributed to our unitholders;
in some instances, our general partner may cause us to borrow funds in order to permit the payment of cash distributions, even if the purpose or effect of the borrowing is to make incentive distributions;
our general partner determines which costs, including allocated overhead, incurred by it and its affiliates are reimbursable by us;
our partnership agreement does not restrict our general partner from causing us to pay it or its affiliates for any services rendered on terms that are fair and reasonable to us or entering into additional contractual arrangements with any of these entities on our behalf, and provides that reimbursement to Loews for amounts allocable to us consistent with accounting and allocation methodologies generally permitted by the FERC for rate-making purposes and past business practices is deemed fair and reasonable to us;
our general partner controls the enforcement of obligations owed to us by it and its affiliates;
our general partner intends to limit its liability regarding our contractual obligations;
our general partner decides whether to retain separate counsel, accountants or others to perform services for us; and
our general partner may exercise its rights to call and purchase (1) all of our common units if, at any time, it and its affiliates own more than 80% of the outstanding common units or (2) all of our equity securities (including common units), if it and its affiliates own more than 50% in the aggregate of the outstanding common units and any other classes of equity securities and it receives an opinion of outside legal counsel to the effect that our being a pass-through entity for tax purposes has or is reasonably likely to have a material adverse effect on the maximum applicable rates we can charge our customers.

Our partnership agreement limits our general partner's fiduciary duties to unitholders and restricts the remedies available to unitholders for actions taken by our general partner that might otherwise constitute breaches of fiduciary duty.

Our partnership agreement contains provisions that reduce the standards to which our general partner would otherwise be held by state fiduciary duty law. For example, our partnership agreement:  
permits our general partner to make a number of decisions in its individual capacity, as opposed to its capacity as our general partner. This entitles our general partner to consider only the interests and factors that it desires, and it has no duty or obligation to give any consideration to any interest of, or factors affecting us, our affiliates or any limited partner. Decisions made by our general partner in its individual capacity will be made by a majority of the owners of our general partner, and not by the board of directors of our general partner. Examples of these kinds of decisions include the exercise of its call rights, its voting rights with respect to the units it owns and its registration rights and the determination of whether to consent to any merger or consolidation of the partnership;
provides that our general partner shall not have any liability to us or our unitholders for decisions made in its capacity as general partner so long as it acted in good faith, meaning it believed that the decisions were in the best interests of the partnership;
generally provides that affiliate transactions and resolutions of conflicts of interest not approved by the conflicts committee of the board of directors of our general partner and not involving a vote of unitholders must be on terms no less favorable to us than those generally provided to or available from unrelated third parties or be “fair and reasonable” to us and that, in determining whether a transaction or resolution is “fair and reasonable,” our general partner may consider the totality of the relationships between the parties involved, including other transactions that may be particularly advantageous or beneficial to us; and
provides that our general partner and its officers and directors will not be liable for monetary damages to us, our limited partners or assignees for any acts or omissions unless there has been a final and non-appealable judgment entered by a court of competent jurisdiction determining that the general partner or those other persons acted in bad faith or engaged in fraud or willful misconduct.



We have a holding company structure in which our subsidiaries conduct our operations and own our operating assets, which may affect our ability to make distributions.

We are a partnership holding company and our operating subsidiaries conduct all of our operations and own all of our operating assets. We have no significant assets other than the ownership interests in our subsidiaries. As a result, our ability to make distributions to our unitholders depends on the performance of our subsidiaries and their ability to distribute funds to us. The ability of our subsidiaries to make distributions to us may be restricted by, among other things, the provisions of existing and future indebtedness, applicable state partnership and limited liability company laws and other laws and regulations, including FERC policies.

Tax Risks

Our tax treatment depends on our status as a partnership for federal income tax purposes, as well as our not being subject to a material amount of entity-level taxation by individual states. If the Internal Revenue Service (IRS) were to treat us as a corporation for federal income tax purposes, or if we were to become subject to material amounts of entity-level taxation for state tax purposes, then our cash available fordistribution to our unitholders would be substantially reduced.
The anticipated after-tax economic benefit of an investment in our common units depends largely on our being treated as a partnership for federal income tax purposes.

Despite the fact that we are organized as a limited partnership under Delaware law, we would be treated as a corporation for federal income tax purposes unless we satisfy a “qualifying income” requirement. Based upon our current operations, we believe we satisfy the qualifying income requirement. Failing to meet the qualifying income requirement or a change in current law could cause us to be treated as a corporation for federal income tax purposes or otherwise subject us to taxation as an entity.

If we were treated as a corporation for federal income tax purposes, we would pay federal income tax on our taxable income at the corporate tax rate and would likely pay additional state income tax at varying rates. Distributions to our unitholders would generally be taxed again as corporate distributions, and no income, gains, losses, deductions or credits would flow through to our unitholders. Because a tax would be imposed upon us as a corporation, our cash available for distribution to our unitholders would be substantially reduced. Thus, treatment of us as a corporation would result in a material reduction in the anticipated cash flows and after-tax return to our unitholders, likely causing a substantial reduction in the value of our common units.
Our partnership agreement provides that if a law is enacted or existing law is modified or interpreted in a manner that subjects us to taxation as a corporation or otherwise subjects us to a material amount of entity-level taxation for federal, state, local, or foreign income tax purposes, the target distribution amounts will be adjusted to reflect the impact of that law or interpretation on us. At the state level, several states have been evaluating ways to subject partnerships to entity-level taxation through the imposition of state income, franchise, or other forms of taxation. Imposition of a similar tax on us in the jurisdictions in which we operate or in other jurisdictions to which we may expand could substantially reduce our cash available for distribution to our unitholders.

The tax treatment of publicly traded partnerships or an investment in our common units could be subject to potential administrative, legislative, or judicial changes or differing interpretations, possibly applied on a retroactive basis.

The present U.S. federal income tax treatment of publicly traded partnerships, including us, or an investment in our common units may be modified by administrative, legislative, or judicial changes or differing interpretations at any time. From time to time, members of Congress propose and consider substantive changes to the existing federal income tax laws that affect publicly traded partnerships. Although there is no current legislative proposal, a prior legislative proposal would have eliminated the qualifying income exception to the treatment of all publicly-traded partnerships as corporations upon which we rely for our treatment as a partnership for U.S. federal income tax purposes.

In addition, on January 24, 2017, final regulations regarding which activities give rise to qualifying income within the meaning of Section 7704 of the Code (the “Final Regulations”) were published in the Federal Register. The Final Regulations were effective as of January 19, 2017, and apply to taxable years beginning on or after January 19, 2017. We do not believe the Final Regulations affect our ability to continue to be treated as a partnership for U.S. federal income tax purposes.

Any modification to the U.S. federal income tax laws may be applied retroactively and could make it more difficult or impossible for us to meet the exception for certain publicly traded partnerships to be treated as partnerships for U.S. federal income tax purposes. We are unable to predict whether any of these changes or other proposals will ultimately be enacted. Any such changes could negatively impact the value of an investment in our common units. You are urged to consult with a tax advisor with


respect to the status of regulatory or administrative developments and proposals and their potential effect on your investment in our common units.

If the IRS were to contest the federal income tax positions we take, the market for our common units may be adversely impacted and the costs of any IRS contest will reduce our cash available for distribution to our unitholders.
We have not requested a ruling from the IRS with respect to our treatment as a partnership for U.S. federal income tax purposes. The IRS may adopt positions that differ from the positions that we take. It may be necessary to resort to administrative or court proceedings to sustain some or all of the positions we take. A court may not agree with some or all of the positions we take. Any contest with the IRS may materially and adversely impact the market for our common units and the price at which they trade. Moreover, the costs of any contest between us and the IRS will result in a reduction in our cash available for distribution to our unitholders and will be borne indirectly by our unitholders.

If the IRS makes audit adjustments to our income tax returns for tax years beginning after December 31, 2017, it (and some states) may assess and collect any taxes (including any applicable penalties and interest) resulting from such audit adjustments directly from us, in which case our cash available for distribution to our unitholders might be substantially reduced and our current and former unitholders may be required to indemnify us for any taxes (including any applicable penalties and interest) resulting from such audit adjustments that were paid on behalf of such unitholders.

Pursuant to the Bipartisan Budget Act of 2015, for tax years beginning after December 31, 2017, if the IRS makes audit adjustments to our income tax returns, it (and some states) may assess and collect any taxes (including any applicable penalties and interest) resulting from such audit adjustments directly from us. To the extent possible under the new rules, our general partner may choose to have us either pay the taxes (including any applicable penalties and interest) directly to the IRS or, if we are eligible, issue a revised information statement to each unitholder and former unitholder with respect to an audited and adjusted return. Although our general partner may elect to have our unitholders and former unitholders take such audit adjustment into account and pay any resulting taxes (including applicable penalties and interest) in accordance with their interests in us during the tax year under audit, there can be no assurance that such election will be practical, permissible or effective in all circumstances. As a result, our current unitholders may bear some or all of the tax liability resulting from such audit adjustment, even if such unitholders did not own units in us during the tax year under audit. If, as a result of any such audit adjustment, we are required to make payments of taxes (including any applicable penalties and interest), our cash available for distribution to our unitholders might be substantially reduced and our current and former unitholders may be required to indemnify us for any taxes (including any applicable penalties and interest) resulting from such audit adjustments that were paid on such unitholders behalf. These rules are not applicable for tax years beginning on or prior to December 31, 2017.

Our unitholders will be required to pay taxes on their share of our taxable income, including their share of income from the cancellation of debt, even if they do not receive any cash distributions from us.
Unitholders will be required to pay federal income taxes and, in some cases, state and local income taxes on their share of our taxable income, whether or not they receive cash distributions from us. Unitholders may not receive cash distributions from us equal to such unitholders' share of our taxable income or even equal to the actual tax liability due from such unitholders' share of our taxable income.

We may engage in transactions to delever the partnership and manage our liquidity that may result in income to our unitholders without a corresponding cash distribution. For example, if we sell assets and use the proceeds to repay existing debt or fund capital expenditures, you may be allocated taxable income and gain resulting from the sale without receiving a cash distribution. Further, taking advantage of opportunities to reduce our existing debt, such as debt exchanges, debt repurchases, or modifications of our existing debt could result in “cancellation of indebtedness income” (also referred to as “COD income”) being allocated to our unitholders as taxable income. Unitholders may be allocated COD income, and income tax liabilities arising therefrom may exceed cash distributions or the value of the units. The ultimate effect of any such allocations will depend on the unitholder's individual tax position with respect to its units. Unitholders are encouraged to consult with a tax advisor with respect to the consequences to them of COD income.

Tax gain or loss on the disposition of our common units could be more or less than expected.
If our unitholders sell their common units, they will recognize gain or loss equal to the difference between the amount realized and their tax basis in those common units. Because distributions in excess of a unitholder's allocable share of our net taxable income result in a decrease to such unitholder's tax basis in their common units, the amount, if any, of such prior excess distributions with respect to the units they sell will, in effect, become taxable income to the unitholder if they sell such units at a price greater than their tax basis in those units, even if the price they receive is less than their original cost.



A substantial portion of the amount realized from a unitholder’s sale of our units, whether or not representing gain, may be taxed as ordinary income to such unitholder due to potential recapture items, including depreciation recapture. Thus, a unitholder may recognize both ordinary income and capital loss from the sale of units if the amount realized on a sale of such units is less than such unitholder’s adjusted basis in the units. Net capital loss may only offset capital gains and, in the case of individuals, up to an annual limit of ordinary income per year. In the taxable period in which a unitholder sells its units, such unitholder may recognize ordinary income from our allocations of income and gain to such unitholder prior to the sale and from recapture items that generally cannot be offset by any capital loss recognized upon the sale of units. 

Tax-exempt entities face unique tax issues from owning common units that may result in adverse tax consequences to them.
Investments in common units by tax-exempt entities, such as employee benefit plans and individual retirement accounts (IRAs), raise issues unique to them. For example, virtually all of our income allocated to organizations that are exempt from federal income tax, including IRAs and other retirement plans, will be unrelated business taxable income and will be taxable to them. Further, with respect to taxable years beginning after December 31, 2017, a tax-exempt entity with more than one unrelated trade or business (including by attribution from investment in a partnership such as ours that is engaged in one or more unrelated trade or business) is required to compute the unrelated business taxable income of such tax-exempt entity separately with respect to each such trade or business (including for purposes of determining any net operating loss deduction). As a result, for years beginning after December 31, 2017, it may not be possible for tax-exempt entities to utilize losses from an investment in our partnership to offset unrelated business taxable income from another unrelated trade or business and vice versa. If you are a tax-exempt entity, you should consult with a tax advisor before investing in our common units.

Non-U.S. unitholders will be subject to U.S. taxes and withholding with respect to their income and gain from owning our units.

Non-U.S. unitholders are generally taxed and subject to income tax filing requirements by the IRS on income effectively connected with a U.S. trade or business (effectively connected income). Income allocated to our unitholders and any gain from the sale of our units will generally be considered to be effectively connected with a U.S. trade or business. As a result, distributions to a non-U.S. unitholder will be subject to withholding at the highest applicable effective tax rate and a non-U.S. unitholder who sells or otherwise disposes of a unit will also be subject to U.S. federal income tax on the gain realized from the sale or disposition of that unit. 

The Tax Cuts and Jobs Act imposes a withholding obligation of 10% of the amount realized upon a non-U.S. unitholder’s sale or exchange of an interest in a partnership that is engaged in a U.S. trade or business. However, due to the challenges of administering a withholding obligation applicable to open market trading and other complications, the IRS has temporarily suspended the application of this withholding rule to open market transfers of interest in publicly traded partnerships pending promulgation of regulations or other guidance that resolves the challenges. It is not clear if or when such regulations or other guidance will be issued. If you are a non-U.S. person, you should consult a tax advisor before investing in our common units.

We will treat each purchaser of common units as having the same tax benefits without regard to the common units actually purchased. The IRS may challenge this treatment, which could adversely affect the value of the common units.
Because we cannot match transferors and transferees of common units and because of other reasons, we have adopted depreciation and amortization positions that may not conform with all aspects of existing Treasury Regulations. A successful IRS challenge to those positions could adversely affect the amount of tax benefits available to our unitholders. It also could affect the timing of these tax benefits or the amount of gain from a unitholder's sale of common units and could have a negative impact on the value of our common units or result in audit adjustments to our unitholders' tax returns.

We generally prorate our items of income, gain, loss and deduction between transferors and transferees of our units each month based upon the ownership of our units on the first business day of each month, instead of on the basis of the date a particular unit is transferred. The IRS may challenge this treatment, which could change the allocation of items of income, gain, loss and deduction among our unitholders.

We generally prorate our items of income, gain, loss and deduction between transferors and transferees of our units each month based upon the ownership of our units on the first business day of each month (the “Allocation Date”), instead of on the basis of the date a particular unit is transferred. Similarly, we generally allocate certain deductions for depreciation of capital additions, gain or loss realized on a sale or other disposition of our assets and, in the discretion of the general partner, any other extraordinary item of income, gain, loss or deduction based upon ownership on the Allocation Date. Treasury Regulations allow a similar monthly simplifying convention, but may not specifically authorize all aspects of our proration method. If the IRS were


to successfully challenge our proration method, we may be required to change the allocation of items of income, gain, loss and deduction among our unitholders.

A unitholder whose units are the subject of a securities loan (e.g., a loan to a “short seller” to cover a short sale of units) may be considered to have disposed of those units. If so, such unitholder would no longer be treated for tax purposes as a partner with respect to those units during the period of the loan and may recognize gain or loss from the disposition.

Because there are no specific rules governing the U.S. federal income tax consequence of loaning a partnership interest, a unitholder whose units are the subject of a securities loan may be considered to have disposed of the loaned units. In that case, the unitholder may no longer be treated for tax purposes as a partner with respect to those units during the period of the loan to the short seller and the unitholder may recognize gain or loss from such disposition. Moreover, during the period of the loan, any of our income, gain, loss or deduction with respect to those units may not be reportable by the unitholder and any cash distributions received by the unitholder as to those units could be fully taxable as ordinary income. Unitholders desiring to assure their status as partners and avoid the risk of gain recognition from a securities loan are urged to consult with a tax advisor to determine whether it is advisable to modify any applicable brokerage account agreements to prohibit their brokers from borrowing their units.

We have adopted certain valuation methodologies in determining a unitholder’s allocations of income, gain, loss and deduction. The IRS may challenge these methodologies or the resulting allocations, which could adversely affect the value of our common units.

In determining the items of income, gain, loss and deduction allocable to our unitholders, we must routinely determine the fair market value of our assets. Although we may, from time to time, consult with professional appraisers regarding valuation matters, we make many fair market value estimates using a methodology based on the market value of our common units as a means to measure the fair market value of our assets. The IRS may challenge these valuation methods and the resulting allocations of income, gain, loss and deduction.

A successful IRS challenge to these methods or allocations could adversely affect the timing or amount of taxable income or loss being allocated to our unitholders. It also could affect the amount of gain recognized from the sale of our common units, have a negative impact on the value of our common units or result in audit adjustments to our unitholders’ tax returns without the benefit of additional deductions.

Our unitholders may be subject to state and local taxes and income tax return filing requirements in jurisdictions where they do not live as a result of investing in our common units.
In addition to U.S. federal income taxes, our unitholders may be subject to other taxes, including state and local taxes, unincorporated business taxes and estate, inheritance or intangible taxes that are imposed by the various jurisdictions in which we conduct business or own property now or in the future, even if they do not live in any of those jurisdictions. Our unitholders will likely be required to file state and local income tax returns and pay state and local income taxes in some or all of these various jurisdictions. Further, our unitholders may be subject to penalties for failure to comply with those requirements.

We currently own assets in multiple states. Many of these states currently impose a personal income tax on individuals, corporations and other entities. As we make acquisitions or expand our business, we may own assets or conduct business in additional states that impose a personal income tax. It is our unitholders’ responsibility to file all U.S. federal, state and local tax returns.






24




Item 1B. Unresolved Staff Comments

None.


Item 1C. Cybersecurity

Risk Management and Strategy

Our business is dependent upon our computer systems, devices and networks (operational and information technology) to collect, process and store the data necessary to conduct almost all aspects of our business, including the operation of our pipeline and storage facilities and the recording and reporting of commercial and financial information. We maintain a cybersecurity program, which includes people, processes, and technology aimed at defending our computer systems, devices and networks (operational and information technology) against increasingly sophisticated threats.

We recognize the importance of protecting both our information and operational control systems from threats that could disrupt our business, put our assets at risk or compromise our customer and employee data. The effective protection of our assets and technology infrastructure is crucial to the reliability of our operations, our ability to serve our customers, the nation's energy needs and the security of our data. We developed a comprehensive strategy designed to address both physical and cybersecurity threats. Additionally, as further described in Item 1. Business—Government RegulationTransportation Safety Administration, TSA has issued a series of security directives that all pipeline owners and operators must include in their cybersecurity planning, testing and in their reporting of any incidents.

Our cybersecurity program is encapsulated in our Cybersecurity Implementation Plan, Cybersecurity Incident Response Plan and Cybersecurity Assessment Plan (CAP). Our cybersecurity program is implemented and maintained using information security tools, policies and a dedicated team responsible for monitoring our networks, providing training to our employees, analyzing the evolution of new threats and strategies for mitigating such threats and seeking to continually harden our cybersecurity posture. The program is periodically exercised, reviewed, updated, and vetted through third-party audits, assessments, and tests with the goal of validating its effectiveness in reducing risk, as well as evaluating its compliance with legal and regulatory requirements. We assess, identify and manage our material risks from cybersecurity threats by employing the following:

a.Identification of critical systems – we seek to identify which operational or information technology, if compromised or exploited, would result in operational disruption or data compromise. We aim to protect the entire environment at an enterprise level where practical, combined with additional layered, risk-based controls designed to safeguard against cybersecurity threats. This strategic, defense-in-depth, and risk-based approach to cybersecurity provides a methodology designed to identify, protect, detect, respond, and recover from cybersecurity incidents.
b.Network segmentation – we use a combination of firewalls and routers to provide network segmentation seeking to provide us with network zone protection.
c.Access controls – we leverage several security capabilities to attempt to enforce access, authorization and authentication to relevant systems, technology, and controls. A least-privilege methodology is applied for localized client workstations, servers, and applications. Security capabilities for access control include physical, administrative, and technical controls that combine to provide a defense-in-depth approach designed to protect our cyber assets from unauthorized use.
d.Continuous monitoring, detection, and auditing – we employ various technologies, tactics, and procedures aimed to continuously monitor, baseline, and detect threats, and audit our network and systems. In addition, we use a combination of technology tools with outside managed security service providers designed to capture, analyze and respond to security anomalies.
e.Patch management – we use a network vulnerability scanning tool that continually scans, and reports identified vulnerabilities in servers and workstations in certain networks. Vulnerability scanner reports are used to drive patching and remediation efforts and are also used as a tool to evaluate the effectiveness of efforts to seek to ensure patches are applied timely. Application and infrastructure subject matter experts subscribe to various third-party vendor security notifications to receive proactive notifications on, among other things, bugs, security flaws and mitigations, related to operational and information systems.

The above cybersecurity risk management processes are integrated into our overall risk management program. Cybersecurity threats are understood to be wide reaching and to intersect with various other enterprise risks. In addition to
24


assessing our own cybersecurity preparedness, we also consider cybersecurity risks associated with our use of third-party service providers based on the potential impact of a disruption of the services to our operations and the sensitivity of data shared with the service providers.

We regularly engage independent third parties to periodically assess our cybersecurity posture. These assessments include penetration tests, purple team activities, health checks and point-specific technical cybersecurity assessments of key systems. Some of these assessments are performed with internal audit oversight. Certain of these processes are part of our CAP and are required to be tested in regular intervals with the test results required to be reported to TSA on a regular basis. We interface with industry peers, participate in information sharing and analysis centers and partner with federal, state, and local law enforcement and regulatory agencies with the goal of forming a cybersecurity threat feedback loop and periodically sharing threat and mitigation information, techniques, tactics and procedures.

Impact of Risks from Cybersecurity Threats

As of the date of this Report, we are not aware of any previous cybersecurity threats, including as a result of previous cybersecurity incidents, that have materially affected or are reasonably likely to materially affect us. We acknowledge that cybersecurity threats are continually evolving, and the possibility of future cybersecurity incidents remains. Despite the implementation of our cybersecurity processes, our security measures cannot guarantee that a significant cybersecurity attack will not occur. While we devote resources to our security measures designed to protect our systems and information, no security measure is infallible. See Item 1A. Risk Factors for additional information about the risks to our business associated with a breach or other compromise to our information and operational technology systems.

Governance

Our board of directors oversees the execution of our cybersecurity strategy and the assessment of cybersecurity risks, along with the actions that we take seeking to mitigate and address those cybersecurity risks. Our Chief Information Security Officer (CISO) oversees our cybersecurity activities and leads our team of cybersecurity professionals responsible for our cybersecurity program and is informed about and monitors the prevention, detection, mitigation and remediation of cybersecurity incidents as part of our cybersecurity programs. Our CISO and other cybersecurity professionals provide updates regarding cybersecurity risks to our executive team and board of directors at least quarterly, with more frequent updates regarding cybersecurity-related situations, such as intelligence pointing to increased adversary activity, as appropriate. Our Chief Information Officer and CISO also attend weekly executive leadership meetings to give updates on any immediate cybersecurity threats, risks and regulatory changes as well as any improvements or impediments to our cybersecurity posture. Our CISO has over thirty years of experience involving technology in the energy sector, with a focus over the last twenty years on helping companies, including us, improve their technology infrastructure and cybersecurity programs.


Item 2. Properties

We are headquartered in approximately 103,00098,600 square feet of leased office space located in Houston, Texas. We also have approximately 60,000 square feet of leased office space in Owensboro, Kentucky. Our operating subsidiaries own their respective pipeline and storage systems in fee. However, substantial portions of these systems are constructed and maintained on property owned by others pursuant to rights-of-way, easements, permits, licenses or consents. Our Pipeline and Storage Systems, in Part I, Item 1 of this Annual Report on Form 10-K contains additional information regarding our material property, including our pipelines and storage facilities.


Item 3. Legal Proceedings

Refer to Note 46 in Part II, Item 88. of this Annual Report on Form 10-K for a discussion of our legal proceedings.


Item 4. Mine Safety Disclosures

None.Not applicable.


25



PART II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Our Partnership Interests

Not applicable.
As of December 31, 2017, we had outstanding 250.3 million common units, a 2% general partner interest and IDRs. The common units represent all of our limited partner interests and 98% of our total ownership interests, in each case excluding our IDRs. As discussed below under Our Cash Distribution Policy—Incentive Distribution Rights, the IDRs represent the right for the holder to receive varying percentages of quarterly distributions of available cash from operating surplus in excess of certain specified target quarterly distribution levels. As such, the IDRs cannot be expressed as a constant percentage of our total ownership interests.

BPHC, a wholly-owned subsidiary of Loews, owns 125.6 million of our common units and, through Boardwalk GP, an indirect wholly-owned subsidiary of BPHC, holds the 2% general partner interest and all of our IDRs. As of February 13, 2018, the common units and general partner interest owned by BPHC represent approximately 51% of our equity interests, excluding IDRs. The additional interest represented by the IDRs is not included in such ownership percentage because, as noted above, the IDRs cannot be expressed as a constant percentage of our ownership.

Market Information

As of February 13, 2018, we had 250.3 million common units outstanding held by approximately 35 holders of record. Our common units are traded on the NYSE under the symbol “BWP.”

The following table sets forth, for the periods indicated, the high and low sales prices for our common units, as reported on the NYSE Composite Transactions Tape, and information regarding our quarterly distributions. The closing sales price of our common units on the NYSE on February 13, 2018, was $11.37 per unit.
 
Sales Price Range per
Common Unit
  
Cash Distributions
per
Common Unit (1)
 
 High Low   
Year Ended December 31, 2017:       
Fourth quarter$15.24

$12.79

$0.1000 
Third quarter18.29

14.40

 0.1000 
Second quarter18.79

16.60

 0.1000 
First quarter18.95

17.30

 0.1000 
Year Ended December 31, 2016: 
  
    
Fourth quarter$18.49
 $16.02
 $0.1000 
Third quarter17.97
 15.97
  0.1000 
Second quarter18.16
 13.96
  0.1000 
First quarter14.83
 8.86
  0.1000 
(1)Represents cash distributions attributable to the quarter and declared and paid to limited partner unitholders within 60 days after quarter end. 

Our Cash Distribution Policy

Our cash distribution policy is consistent with the terms of our partnership agreement which requires us to distribute our “available cash,” as that term is defined in our partnership agreement, on a quarterly basis. Our distributions are determined by the board of directors of our general partner based on our financial position, earnings, cash flow and other relevant factors. However, there is no guarantee that unitholders will receive quarterly distributions from us. Our distribution policy may be changed at any time and is subject to certain restrictions or limitations, including, among others, our general partner’s broad discretion to establish reserves which could reduce cash available for distributions, FERC regulations which place restrictions on various types of cash management programs employed by companies in the energy industry, including our operating subsidiaries subject to FERC jurisdiction, the requirements of applicable state partnership and limited liability company laws and the requirements of our


Item 6. [Reserved]
revolving credit facility which would prohibit us from making distributions to unitholders if an event of default were to occur. In addition, we may lack sufficient cash to pay distributions to unitholders due to a number of factors, including those described in Risk Factors in Part I, Item 1A of this Report.

Incentive Distribution Rights

IDRs represent a limited partner ownership interest and include the right to receive an increasing percentage of quarterly distributions of available cash from operating surplus after the target distribution levels have been achieved, as defined in our partnership agreement. Our general partner currently holds all of our IDRs, but may transfer these rights separately from its general partner interest, subject to restrictions in our partnership agreement. Since 2014, we have not paid distributions on behalf of the IDRs. Note 12 in Part II, Item 8 of this Report contains more information regarding our distributions.

Assuming we do not issue any additional classes of units and our general partner maintains its 2% general partner interest, we will distribute any available cash from operating surplus for any quarter among the unitholders and our general partner as follows:
 Total Quarterly Distributions 
Marginal Percentage Interest
in Distributions
Target Amount 
Limited Partner
Unitholders
 
General
Partner and IDRs
First Target Distributionup to $0.4025 98% 2%
Second Target Distributionabove $0.4025 up to $0.4375 85% 15%
Third Target Distributionabove $0.4375 up to $0.5250 75% 25%
Thereafterabove $0.5250 50% 50%

Equity Compensation Plans

For information about our equity compensation plans, see Note 11 in Part II, Item 8 of this Report.

Issuer Purchases of Equity Securities

None.

27



Item 6.  Selected Financial Data

The following table presents our selected historical financial and operating data. As used herein, EBITDA means earnings before interest, income taxes, depreciation and amortization. EBITDA and distributable cash flow are not calculated or presented in accordance with accounting principles generally accepted in the U.S. of America (GAAP). We explain these measures below and reconcile them to the most directly comparable financial measures calculated and presented in accordance with GAAP in (2)Non-GAAP Financial Measures below. The financial data below should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in Item 8 of this Report (in millions, except Net income per common unit (basic and diluted), Net income per class B unit (basic and diluted), Distributions per common unit and Distributions per class B unit):
26
 For the Year Ended December 31,
 2017 2016 2015 2014 2013
Total operating revenues$1,322.6
 $1,307.2
 $1,249.2
 $1,233.8
 $1,205.6
Net income attributable to controlling interest297.0
 302.2
 222.0
 233.6
 253.7
Total assets8,906.6
 8,637.8
 8,300.3
 8,194.3
 7,900.1
Long-term debt and capital lease obligation3,686.8
 3,558.0
 3,459.3
 3,677.2
 3,410.0
Net income per common unit — basic1.16
 1.18
 0.87
 0.94
 1.00
Net income per class B unit — basic (1)

 
 
 
 0.05
Net income per common unit — diluted
 
 
 
 0.96
Net income per class B unit — diluted (1)

 
 
 
 0.48
Distributions per common unit0.40
 0.40
 0.40
 0.40
 2.13
Distributions per class B unit (1)

 
 
 
 0.90
EBITDA (2)
791.4
 803.0
 722.2
 687.6
 688.7
Distributable cash flow (2)
600.5
 507.3
 413.3
 449.4
 558.6
(1)On October 9, 2013, the class B units converted to common units on a one-for-one basis pursuant to the terms of our partnership agreement.
(2)Non-GAAP Financial Measures.

We use non-GAAP measures to evaluate our business and performance, including EBITDA and distributable cash flow. EBITDA is used as a supplemental financial measure by management and by external users of our financial statements, such as investors, commercial banks, research analysts and rating agencies, to assess:
our operating and financial performance and return on invested capital as compared to those of other companies in the midstream portion of the natural gas and NGLs industry, without regard to financing methods and capital structure;
our ability to generate cash sufficient to pay interest on our indebtedness and to make distributions to our partners; and 
the viability of acquisitions and capital expenditure projects.

Management and the external users of our financial statements, as described above, use distributable cash flow as an approximation of net operating revenues generated by us, that when realized in cash, will be available to be distributed to our unitholders and our general partner.

EBITDA and distributable cash flow should not be considered alternatives to, or more meaningful than, net income, operating income, cash flows from operating activities or any other measure of financial performance or liquidity presented in accordance with GAAP. Certain items excluded from EBITDA and distributable cash flow are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure, as well as historic costs of depreciable assets. We have included information concerning EBITDA because EBITDA provides additional information as to our ability to meet our fixed charges and is presented solely as a supplemental measure. Likewise, we have included information concerning distributable cash flow as a supplemental financial measure we use to assess our ability to make distributions to our unitholders and general partner, because distributable cash flow approximates our net operating revenues that will be realized in cash. However, viewing EBITDA and distributable cash flow as indicators of our ability to make cash distributions on our common units should be done with caution, as we might be required to conserve funds or to allocate funds to business or legal purposes rather than making distributions. EBITDA and distributable cash flow are not necessarily comparable to similarly titled measures of another company.


The following table presents a reconciliation of EBITDA and distributable cash flow to net income, the most directly comparable GAAP financial measure for each of the periods presented below (in millions):
 For the Year Ended December 31,
 2017 2016 2015 2014 2013
Net Income$297.0
 $302.2
 $222.0
 $146.8
 $250.2
Net loss attributable to noncontrolling interests
 
 
 (86.8) (3.5)
Net income attributable to controlling interests297.0
 302.2

222.0

233.6

253.7
Income taxes1.0
 0.6
 0.5
 0.4
 0.5
Depreciation and amortization322.8
 317.8
 323.7
 288.7
 271.6
Interest expense171.0
 182.8
 176.4
 165.5
 163.4
Interest income(0.4) (0.4) (0.4) (0.6) (0.5)
EBITDA$791.4
 $803.0

$722.2

$687.6

$688.7
Less: 
  
  
  
  
Cash paid for interest net of capitalized interest (1)
163.7
 170.6
 170.6
 153.0
 151.0
Maintenance capital expenditures (2)
137.9
 121.3
 142.5
 91.4
 69.7
     Base gas capital expenditures
 
 
 14.7
 
Add: 
 

  
  
  
Proceeds from legal settlements
 
 6.2
 6.3
 
Proceeds from sale of operating assets (3)
63.8
 0.2
 0.8
 2.9
 60.7
Loss (gain) on sale of assets and impairments (3)
49.0
 3.7
 (0.1) 1.9
 (25.4)
Goodwill impairment
 
 
 
 51.5
Bluegrass project impairment, net of noncontrolling interest
 
 
 10.0
 
Other: (4)
(2.1) (7.7) (2.7) (0.2) 3.8
Distributable Cash Flow$600.5
 $507.3
 $413.3
 $449.4
 $558.6
(1)The year ended December 31, 2017, includes $1.5 million of payments related to the settlement of interest rate derivatives.
(2)
Since 2014, the level of annual maintenance capital expenditures increased from previous historical levels due to an increase in integrity management activities, further discussed below under Item 7, Pipeline System Maintenance. For the year ended December 31, 2015, maintenance capital expenditures were also impacted by pipeline maintenance associated with pipeline integrity activities and our brine operations.
(3)For the year ended December 31, 2017, the Flag City processing plant and related assets were sold for $63.6 million, which resulted in losses and impairment charges of $47.1 million on the sale. For the year ended December 31, 2013, we recognized a gain of $29.9 million from the sale of natural gas stored underground having a carrying amount of $26.0 million.
(4)Includes non-cash items such as the equity component of allowance for funds used during construction and equity in earnings, net of noncontrolling interests. The year ended December 31, 2013, included the sale of ethylene inventory that was acquired through the purchase of Louisiana Midstream.


29




Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A)

Overview

We are a master limited partnership operatingoperate in the midstream portion of the natural gas and NGLs industry, providing transportation and storage for those commodities. We also provide ethane supply and transportation services for industrial customers in Louisiana and Texas. Refer to Part I, Item 1,1. Business, of this Annual Report on Form 10-K for further discussion of our operations and business. We are not in the business of buying and selling natural gas and NGLs other than for system management purposes and to facilitate our ethane supply operations, but changes in natural gas and NGLsNGL prices may impact the volumes of natural gas or NGLs transported and stored by customers or the ethane supply requirements on our systems. The pricing contained in the purchase and sales agreements associated with our ethane supply services is generally based on the same ethane commodity index, plus a fixed delivery fee. As a result, except for possible timing differences that may occur when volumes are purchased in one month and sold in another month, our ethane supply services, like our other businesses, result in us having little to no direct commodity price exposure. We conduct all of our business through our operating subsidiaries as one reportable segment.

Our transportation services consist of firm natural gas transportation, whereby the customer pays a capacity reservation charge to reserve pipeline capacity at receipt and delivery points along our pipeline systems, plus a commodity and fuel charge on the volume of natural gas actually transported, and interruptible natural gas transportation, under which the customer pays to transport gas only when capacity is available and used. The transportation rates we are able to charge customers are heavily influenced by market trends (both short and longer term), including the available natural gas supplies, geographical location of natural gas production, the demand for gas by end-users such as power plants, petrochemical facilities and LNG export facilities and the price differentials between the gas supplies and the market demand for the gas (basis differentials). Rates for short-term firm and interruptible transportation services are influenced by shorter-term market conditions such as current and forecasted weather.

We offer firm natural gas storage services in which the customer reserves and pays for a specific amount of storage capacity, including injection and withdrawal rights, and interruptible storage and PAL services where the customer receives and pays for capacity only when it is available and used. The value of our storage and PAL services (comprised of parking gas for customers and/or lending gas to customers) is affected by natural gas price differentials between time periods, such as between winter and summer (time period price spreads), price volatility of natural gas and other factors. Our storage and parking services have greater value when the natural gas futures market is in contango (a positive time period price spread, meaning that current price quotes for delivery of natural gas further in the future are higher than in the nearer term), while our lending service has greater value when the futures market is backwardated (a negative time period price spread, meaning that current price quotes for delivery of natural gas in the nearer term are higher than further in the future). The value of both storage and PAL services may also be favorably impacted by increased volatility in the price of natural gas, which allows us to optimize the value of our storage and PAL capacity.

We also transport and store NGLs. Contracts for our NGLs services are generally fee-based or based on minimum volume requirements, while others are dependent on actual volumes transported. Our NGLs storage rates are market-based and contracts are typically fixed-price arrangements with escalation clauses.

Due to the capital-intensive nature of our business, our operating costs and expenses typically do not vary significantly based upon the amount of products transported, with the exception of fuel consumed at our compressor stations and not included in a fuel tracker, which is included in Fuel and transportation expensesnetted with fuel retained on our Consolidated Statements of Income. Please refer to Part I, Item 1. Business, for further discussion of the services that we offer and our customer mix.

Acquisition

On September 29, 2023, Boardwalk Resources Company, LLC, a wholly owned subsidiary of ours, acquired 100% of the equity interests of Bayou Ethane from Williams Field Services Group, LLC for $355.0 million in cash. Bayou Ethane owns an approximately 380-mile pipeline system that transports ethane from Mont Belvieu, Texas, to the Mississippi River corridor in Louisiana and two 15-mile pipelines in the Houston Ship Channel area that carry ammonia and hydrogen chloride. Bayou Ethane provides ethane supply and transportation services for industrial customers in Louisiana and Texas. In providing supply services, Bayou Ethane purchases ethane at Mont Belvieu, Texas, and various locations in Louisiana and utilizes its pipeline to deliver ethane supply to its customers. The acquisition allows us to extend our assets, diversify our customer base and service offerings and to complement our existing NGLs operations. The purchase price was funded with available cash on hand.

Firm Transportation Agreements

A substantial portion of our transportation and storage capacity is contracted for under firm transportation agreements. For the year ended December 31, 2023, approximately 89% of our revenues were derived from capacity reservation fees under firm contracts or from contracts with MVCs. The table below sets forth the approximate expectedshows a rollforward of projected operating revenues from capacity reservation and minimum bill charges under committed firm transportation agreements in place as of December 31, 2017,2022, to December 31, 2023, including agreements for 2018transportation, storage, ethane supply and 2019, as well asother services, over the actual comparative amountremaining term of those agreements (in millions):

Total projected operating revenues under committed firm
    agreements as of December 31, 2022
$9,124.5 
Adjustments for:
Actual revenues recognized from firm agreements in 2023(1)
(1,355.5)
Firm agreements entered into or acquired in 2023(2)
1,902.5
Total projected operating revenues under committed firm
    agreements as of December 31, 2023
$9,671.5

(1)As of December 31, 2022, we expected our 2023 revenues for 2017. The table does not include additional revenues we have recognized and may receivefrom fixed fees under firm agreements to be approximately $1,280.0 million, including agreements for transportation, storage and other services. Our actual 2023 revenues recognized from fixed fees under firm agreements based on actual utilizationwere approximately $1,355.5 million, an increase of $75.5 million over 2022, primarily resulting from contract renewals at higher rates that occurred in 2023. The Bayou Ethane acquisition also contributed $14.3 million to the increase.
(2)During 2023, we entered into approximately $1.9 billion of new firm agreements, of which approximately 16% were from new growth projects executed in 2023 and 9%, or $178.0 million, were from the agreements assumed as part of the contracted pipeline capacity, any expected revenues for periods after the expiration dates of the existing agreements, execution of precedentBayou Ethane acquisition.

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For firm agreements associated with new growth projects, orthe associated assets may not be placed into commercial service until sometime in the future. Each year a portion of our firm transportation and storage agreements expire. The rates we are able to charge customers are heavily influenced by market trends (both short and longer term), including the available supply, geographical location of natural gas production, the competition between producing basins, competition with other events that occurred or will occur subsequent to December 31, 2017.
As of
December 31, 2017 (1)
(in millions)
2017 $1,070.0
2018  970.0
2019  950.0



(1) For a discussion of recontracting risks associated with our transportation revenuespipelines for supply and risks associated with construction,markets, the receipt of regulatorydemand for gas by end-users such as power plants, petrochemical facilities and other approvalsLNG export facilities and the nonperformance of our customers, referprice differentials between the gas supplies and the market demand for the gas (basis differentials). Refer to Part I, Item 1. Business and Item 1A. Risk Factors - We may not be able to replace expiring natural gas transportation contracts at attractive rates orof this Annual Report on a long-term basis and may not be able to sell short-term services at attractive rates or at all due to market conditionsForm 10-K and Our actual construction and development costs could exceed our forecasts, our anticipated cash flow from construction and development projects will not be immediate and our construction and development projects may not be completed on time or at all.

In the third quarter 2017, we executed an agreement regarding capacity on our Fayetteville and Greenville Laterals with Southwestern Energy Company (Southwestern), the largest firm transportation customer on those laterals. The agreement, which was approved by the FERC, but is subject to a rehearing request filed with the FERC by Fayetteville Express Pipeline LLC, reduces contracted volumes (or the amountfor further information. As of capacity under contract) on our Fayetteville Lateral for the remaining contract term and commits Southwestern to new firm transportation agreements on our Fayetteville and Greenville Laterals that begin January 1, 2021, and expire on December 31, 2030, and to an interim agreement on the Greenville Lateral from April 2019 through 2020. The agreement also provides us the opportunity to transport natural gas produced from committed properties in the Fayetteville and Moorefield shales that are connected to2023, our Fayetteville Lateral through 2030. Although the transaction will result in a reduction of firm transportation reservation revenues of approximately $70.0 million from 2017 to 2020, including reductions in 2018 and 2019 of approximately $44.0 million and $15.0 million, it provides longer-term revenue generation by addingtop ten years of firm transportation service commitments on both laterals and offers potential additional commodity fee revenue from Southwestern’s volume commitment.

The table below shows a reconciliation of the actualcustomers under committed firm transportationagreements comprised approximately 53% of our total projected operating revenues for 2017 and expectedthe credit profile associated with our customers comprising the total projected operating revenues under committed firm transportation agreements for 2018 from the table shown above to the amounts shownwas 77% rated as investment grade, 7% rated as non-investment grade and 16% not rated. Note 4 in our 2016Part II, Item 8. of this Annual Report on Form 10-K taking into accountcontains more information regarding the Southwestern transaction discussed above, the second quarter 2017 sale of our Flag City processing plant and related assets discussed below and contracts entered into since December 31, 2016. The table does not include additional revenues we have recognized and may receive under firm transportation agreements based on actual utilization of the contracted pipeline capacity, any expected revenues for periods after the expiration dates of the existing agreements, execution of precedent agreements associated with growth projects or other events that occurred or will occur subsequentexpect to December 31, 2017.

  As of December 31, 2017
  (in millions)
  2017 2018
Expected revenues under committed firm transportation
   agreements as reported in our 2016 Annual Report on Form 10-K
 $1,055.0
 $975.0
Adjustments for:      
Southwestern contract restructuring  (7.0)  (44.0)
Sale of Flag City processing plant and related assets  (5.0)  (8.0)
Firm transportation agreements entered into in 2017  27.0
  47.0
Actual/expected revenues under committed firm transportation
   agreements as of December 31, 2017
 $1,070.0
 $970.0

In the 2018 to 2020 timeframe, the agreements associated with our East Texas to Mississippi Pipeline, Southeast Expansion, Gulf Crossing Pipeline and Fayetteville and Greenville Laterals, which were placed into service in 2008 and 2009, will expire. These projects were large, new pipeline expansions, developed to serve growing production in Texas, Oklahoma, Arkansas and Louisiana and anchored primarily by ten-year firm transportation agreements with producers. Since our expansion projects went into service, gas productionearn from the Utica and Marcellus area in the Northeast has grown significantly and has altered the flow patterns of natural gas in North America. Over the last few years, gas production from other basins such as Barnett and Fayetteville, which primarily supported two of our expansions, has declined because the production economics in those basins are not as competitive as other production basins. These market dynamics have resulted in less production from certain basins tied to our system and a narrowing of basis differentials across portions of our pipeline systems, primarily for capacity associated with natural gas flows from west to east. Total revenues generated from the expansion project capacity will be materially lower when these contracts expire. For example, as shown directly above, revenuesfixed fees under committed firm transportation agreements for 2018 are expected to be approximately $100.0 million lower than the actual amount for 2017. This reduction is mainly a result of: (i) expansion contracts on our Gulf South system that expired in early 2018, which comprises approximately 60% of the $100.0 million reduction of revenues; and (ii) the Southwestern contract restructuring, which is responsible for the remaining 40% reduction. While some of the Gulf South capacity has been remarketed at lower rates and for shorter terms, we believe that the


current market rates are not indicative of the long-term value of that capacity. We continue to focus our marketing efforts on enhancing the value of the remaining expansion capacity and we are working with customers to match gas supplies from various basins to new and existing customers and markets, including aggregating supplies at key locations along our pipelines to provide end-use customers with attractive and diverse supply options.

agreements.
Partly as a result of the increase in overall gas supplies, demand markets, primarily in the Gulf Coast area, are growing due to new natural gas export facilities, power plants, petrochemical facilities and increased exports to Mexico. These developments have resulted in significant growth projects for us, as discussed under
Growth Projects. As of December 31, 2017, we have placed several growth projects into service since 2016 and have additional growth projects under development that are expected to be fully placed into service through the end of 2020. These projects have lengthy planning and construction periods. As a result, these projects will not contribute to our earnings and cash flows until they are fully placed into service. The revenues that are expected to be realized in 2018 and 2019 from these growth projects are included in the estimates of expected revenues from capacity reservation and minimum bill charges under committed firm transportation agreements shown above.
Pipeline System Maintenance

and GHG Emission Reduction Initiatives

We incur substantial costs for ongoing maintenance of our pipeline systems and related facilities, including those incurred for pipeline integrity management activities, equipment overhauls, general upkeep and repairs. These costs are not dependent on the amount of revenues earned from our transportation services. PHMSA has developed regulations that require transportation pipeline operators to implement integrity management programs to comprehensively evaluate certain high risk areas, known as HCAs, and MCAs, along pipelines and take additional safety measures to protect pipeline segments locatedpeople and property in highly populatedthese areas. The HCAs for natural gas pipelines are predicated on high-population density areas (which, for natural gas transmission lines, include Class 3 and 4 areas and, depending on the potential impacts of a risk event, may include Class 1 and 2 areas) whereas HCAs along our NGL pipelines are based on high-population density areas, areas near certain drinking water sources and unusually sensitive ecological areas. These regulations have resulted in an overall increase in our ongoing maintenance costs, including maintenance capital and maintenance expense. In 2019, PHMSA has proposed more prescriptiveissued the first part of its gas Mega Rule, which became effective on July 1, 2020. This regulation imposed numerous requirements, including MAOP reconfirmation through re-verification of all historical records for pipelines in service, which re-certification process may require natural gas pipelines installed before 1970 (previously excluded from certain pressure testing obligations) to be pressure tested, the periodic assessment of additional pipeline mileage outside of HCAs (in MCAs as well as Class 3 and Class 4 areas), the reporting of exceedances of MAOP and the consideration of seismicity as a risk factor in integrity management. In 2021, PHMSA issued a final rule that will impose safety regulations related to onshore gas gathering lines and in June 2021, PHMSA issued an Advisory Bulletin advising pipeline and pipeline facility operators of applicable requirements to update their inspection and maintenance plans for the elimination of hazardous leaks and minimization of natural gas released from pipeline facilities. PHMSA and state regulators reportedly began their review of these plans in 2022, and in May 2023, PHMSA published a proposed rule that would enhance requirements for detecting and repairing leaks on new and existing natural gas distribution, gas transmission and gas gathering pipelines. In August 2022, PHMSA published another final rule expanding the Management of Change process, extending corrosion control requirements for gas transmission pipelines, adding requirements that operators ensure no conditions exist following an extreme weather event that could adversely affect the safe operation of the pipeline, and adopting repair criteria for non-HCAs similar to those applicable to HCAs. In September 2023, PHMSA published a proposed rule that would enhance the safety requirements for gas distribution pipelines and would require updates to distribution integrity management programs, emergency response plans, operations and maintenance manuals and other safety practices.

Due to the nature of our interstatebusiness, our operations emit various types of GHGs. We seek to carefully monitor our emissions and expect to incur additional costs to mitigate emissions. New legislation or regulations could increase the costs related to operating and maintaining our facilities. Depending on the particular law, regulation or program, we could be required to incur capital expenditures for installing new monitoring equipment or emission controls on our facilities, acquire and surrender allowances for GHG emissions, pay taxes or fees related to GHG emissions and/or administer and manage a more comprehensive GHG emissions program.

We have been focused on seeking to meet and, in certain instances, pursuing projects aimed at exceeding, regulatory obligations (such as those found in the CAA) by working to reduce emissions of regulated air pollutants, including methane, associated with our pipeline transportation and storage assets. For example, in selecting new compression equipment for growth or asset reliability projects, we consider air emissions as a component in the decision-making process and, when appropriate, place increased emphasis in the selection process on equipment with emissions performance that exceeds applicable federal standards. Several of our reliability projects over the last few years have resulted in replacement of older, higher-emitting compressor drivers with units equipped with advanced emission control systems. As a result, these projects have resulted in decreases in emissions of nitrogen oxides and other air pollutants.

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We have identified the reduction of GHG emissions as an area of focus and look for opportunities to reduce emissions using a variety of strategies, including the following:

evaluating replacing older compression equipment with electric drive compression or new low emission, fuel efficient units when practical;
modifying fuel systems on certain reciprocating compression equipment to lower fuel consumption and emissions;
conducting emissions surveys and performing maintenance and repairs on identified component leaks;
performing annual leak surveys along our pipelines with the aid of helicopters and fixed-wing planes, and analytical field surveys when appropriate;
performing measurement surveys on all of our compressor stations at least twice a year, exceeding EPA requirements;
using optical gas imaging cameras to scan natural gas piping and NGLs pipelines which, ifcomponents at our compressor stations to visualize any leaks in real time;
installing continuous monitoring emission detection equipment at three compression stations;
employing experts in air emissions to develop and monitor efforts in reducing emissions;
reducing methane emissions vented to the atmosphere from transmission pipeline blowdowns by using existing and portable compression and flaring when feasible;
installing repair sleeves and composite wraps where appropriate to avoid pipeline blowdowns;
exploring options to replace high-bleed natural gas pneumatic devices with low or zero flow bleed devices; and
reducing methane emissions from rod packing seals on reciprocating compressors, where appropriate.

However, we cannot guarantee that we will be able to implement any of the opportunities we may review or explore, or, for any opportunities we do choose to implement, to implement them in their intended manner or within a specific timeframe or across all operational assets.

These new and any future regulations adopted as proposed, willby PHMSA and efforts to reduce GHG emissions are expected to cause us to incur increased capital and operating costs, may cause us to experience operational delays and may result in potential adverse impacts to our ability to reliably serve our customers. While these proposed regulations have not yet been finalized, they are representative of the types of regulatory changes that can be enacted which would affect our operations and the cost of operating our facilities. See Part I, Item 1. Business and Item 1A. Risk Factors of this Annual Report on Form 10-K for further information.

Maintenance costs may be capitalized or expensed, depending on the nature of the activities. For any given reporting period, the mix of projects that we undertake will affect the amounts we record as property, plant and equipment (PPE) on our balance sheetConsolidated Balance Sheets or recognize as expenses, which impacts our earnings. In 2018,2024, we expect to spend approximately $320.0$505.0 million to maintain our pipeline systems, comply with regulations and monitor, control and reduce our GHG emissions, of which approximately $120.0$215.0 million is expected to be maintenance capital. In 2017,2023, we spent $342.1$445.5 million on these matters, of which $137.9$164.5 million was recorded as maintenance capital. In 2017, the maintenance capital amounts include pipeline integrity upgrades associated with certain segments of our natural gas pipelines. Refer to Capital Expenditures for more information regarding certain of our maintenance costs and additional pipeline integrity upgrades.costs.


Results of Operations
    
The Overview section in this Item 7, and Note 2 in Part II, Item 8. of Item 8, contain summariesthis Annual Report on Form 10-K contains a summary of our revenuesrevenue contracts and the related revenue recognition policies. A significant portion of our revenues are fee-based, being derived from capacity reservation charges under firm transportation agreements with customers, which do not vary significantly period to period, but are impacted by longer-term trends in our business such as lowerchanges in pricing on contract renewals and other factors discussed elsewhere in this MD&A.Annual Report on Form 10-K. As discussed above, we recently acquired Bayou Ethane. As a result of the acquisition, beginning in the fourth quarter 2023, we have separately reported product sales and product costs on our Consolidated Statements of Income. The pricing contained in the purchase and sales agreements associated with our ethane supply services is generally based on the same ethane commodity index, plus a fixed delivery fee. As a result, except for possible timing differences that may occur when volumes are purchased in one month and sold in another month, our ethane supply services, like our other businesses, result in us having little to no direct commodity price exposure. Our operating costs and expenses do not vary significantly based upon the amount of products transported, with the exception of costs recorded in Fuel and transportation expense, which are typically offsetnetted with fuel retained on our Consolidated Statements of Income. Our operations and maintenance expenses are impacted by revenues from retained fuel includedour compliance with the requirements of, among other regulations, the Mega Rule and our efforts to monitor, control and reduce emissions, as further discussed in our Transportation revenues. Because we are a partnership, we are not a taxable entity for federal income tax purposes and we do not directly pay federal income tax.this Annual Report on Form 10-K.
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On May 9, 2017, we sold
We use EBITDA, a non-GAAP measure, as a financial measure to assess our Flag City Processing Partners, LLC subsidiary, which ownedoperating and financial performance and return on invested capital. We believe that some investors may find this measure useful in evaluating our performance.

The following table presents a reconciliation of net income to EBITDA for the Flag City processing plantyears ended December 31, 2023 and related assets, to a third party for $63.6 million, including customary adjustments. We recognized losses and impairment charges of $47.1 million on the sale, reported within 2022 (in millions):
 For the Year Ended December 31,
 20232022
Net income$386.0 $342.2 
Income taxes0.8 0.8 
Depreciation and amortization408.7 392.3 
Interest expense155.6 165.9 
Interest income(12.1)(3.3)
EBITDA$939.0 $897.9 
Total operating costs and expenses.

Please refer to Firm Transportation Agreements the disclosures in this Item 7. and Pipeline System Maintenance above for further discussion Item 1A. Risk Factors of this Annual Report on Form 10-K of items that have impacted, or could impact in the future, our results of operations, including material trends in our operating revenues and expenses.operations.




20172023 Compared with 20162022

Our net income for the year ended December 31, 2017, decreased $5.22023, increased $43.8 million, or 2%13%, to $297.0$386.0 million compared to $302.2$342.2 million for the year ended December 31, 2016, primarily2022. Our EBITDA for the year ended December 31, 2023, increased $41.1 million, or 5%, to $939.0 million as compared to the comparable 2022 period. Our net income and EBITDA increased due to the loss on the saleother factors discussed below, and also included increases of the Flag City processing plant$5.5 million and related assets in 2017 and $12.7$8.2 million of income from the settlement of a legal claim in 2016, mostly offset by the increase in net operating revenues discussed below.Bayou Ethane acquisition.

Operating revenues for the year ended December 31, 2017,2023, increased $15.4$185.7 million, or 1%13%, to $1,322.6$1,617.7 million, compared to $1,307.2$1,432.0 million for the year ended December 31, 2016. Excluding the net effect of $12.7 million of proceeds received from the settlement of a legal matter in 2016 and items offset in2022. Including fuel and transportation expense, primarily retained fuel,expenses and product costs, operating revenues increased $44.1$95.0 million, or 4%7%. TheDuring the fourth quarter 2023, a customer released its no-notice service into separate transportation and storage services, which resulted in an increase was driven byof storage revenues and a reduction in transportation revenues of $6.4 million in 2023 compared to 2022. Excluding the $6.4 million from the no-notice service contract, our transportation revenues increased $70.9 million, primarily due to re-contracting at higher rates and recently completed growth projects recently placed into service, partially offset by a decrease inprojects; our storage and PAL revenues primarily from the effects of unfavorableincreased $23.1 million due to favorable market conditions on time period price spreads and a decrease in revenues associated with the Flag City saleconditions; and the Southwestern contract restructuring discussed above.Bayou Ethane acquisition contributed $11.4 million, resulting from product sales of $99.4 million and product costs of $88.0 million. These increases were partially offset by $9.0 million from lower sales of our other NGL products and other reductions of $1.4 million.

Operating costs and expenses for the year ended December 31, 2017,2023, increased $26.4$158.7 million, or 3%17%, to $856.1$1,091.5 million, compared to $829.7$932.8 million for the year ended December 31, 2016.2022. Excluding itemsexpenses and product costs offset in operating revenues and the $47.1 million loss on the sale of Flag City assets, operating costs and expenses decreased $4.7 million, or less than 1%, when compared to the comparable period in 2016. We had an increase in operations and maintenance expenses primarily due to growth projects recently placed into service and a higher number of maintenance projects. These increases were offset by lower administrative and general expenses due to higher capitalization rates from the increase in capital projects and lower employee incentive costs.

Total other deductions for the year ended December 31, 2017, decreased $6.2 million, or 4%, to $168.5 million compared to $174.7 million for the 2016 period. The decrease in total other deductions was primarily a result of lower interest expense due to higher capitalized interest from growth projects.

2016 Compared with 2015

Our net income for the year ended December 31, 2016, increased $80.2 million, or 36%, to $302.2 million compared to $222.0 million for the year ended December 31, 2015, driven mainly by an increase in net operating revenues discussed below.

Operating revenues for the year ended December 31, 2016, increased $58.0 million, or 5%, to $1,307.2 million, compared to $1,249.2 million for the year ended December 31, 2015. Excluding the net effect of $12.7 million of proceeds received from the settlement of a legal matter in 2016 and $8.8 million of proceeds received from a business interruption claim in 2015, and items offset in fuel and transportation expense, primarily retained fuel, operating revenues increased $82.6 million, or 7%. The increase was driven by an increase in transportation revenues of $70.8 million, which resulted primarily from growth projects which were placed into service, incremental revenues from the Gulf South rate case and a full year of revenues from our Evangeline pipeline. Storage and PAL revenues were higher by $16.9 million primarily from the effects of favorable market conditions on time period price spreads.

Operating costs and expenses for the year ended December 31, 2016, decreased $23.7 million, or 3%, to $829.7 million, compared to $853.4 million for the year ended December 31, 2015. Excluding items offset in operating revenues, operating costs and expenses increased $4.8$68.0 million, or 1%, when compared7%. Our operating expenses were impacted by the following items:

increased expenses of $5.9 million from the Bayou Ethane acquisition, of which $2.7 million was depreciation and amortization expense;
increased operating and maintenance expenses of $28.2 million primarily due to higher maintenance projects associated with the comparable period in 2015. The operating expense increase wasrequirements of the Mega Rule and higher materials and supplies and outside services costs; and
increased administrative and general expenses of $23.2 million primarily due to higher employee-related costs, partially offsetand outside services costs.

Our depreciation and amortization and interest were impacted by decreasesthe following items:

higher depreciation and amortization expense of $16.4 million from an increased asset base from recently completed growth projects, the Bayou Ethane acquisition and a change in maintenance activitiesthe estimated life of certain of our assets; and depreciation expense.
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Total other deductions for the year ended December 31, 2016, increased $1.4lower interest expense of $10.3 million or 1%, to $174.7 million compared to $173.3 million for the 2015 period. The increase in total other deductions was due to an increaselower average outstanding long-term debt and higher interest income of $8.8 million due to income earned from cash invested in interest expense. The proceeds from the May 2016 issuance of $550.0 million aggregate principal amount of 5.95% Boardwalk Pipelines notes due 2026 (Boardwalk Pipelines 2026 Notes) were initially used to reduce borrowings under our revolving credit facility, which has a lower weighted-average borrowing rate than the Boardwalk Pipelines 2026 Notes.money market funds.


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Liquidity and Capital Resources

We are a partnership holding company and derive all of our operating cash flow from our operating subsidiaries. Our principal sources of liquidity include cash generated from operating activities, our revolving credit facility and debt issuances, sales of limited partner units and our Subordinated Loan.issuances. Our operating subsidiaries use cash from their respective operations to fund their operating activities and maintenance capital requirements, service their indebtedness and make advances or distributions to Boardwalk Pipelines. Boardwalk Pipelines uses cash provided from the operating subsidiaries and, as needed, borrowings under our revolving credit facility to service outstanding indebtedness and make distributions or advances to us to fund our distributions to unitholders. We have no material guarantees of debt or other similar commitments to unaffiliated parties.us.

At December 31, 2017,2023, we had $17.6$20.1 million of cash on hand more than $1.1 billionand $975.0 million of available borrowing capacity under our $1.0 billion revolving credit facility and $300.0 million available under our Subordinated Loan agreement with BPHC.facility. We anticipate that for 2018 our existing capital resources, including our cash on hand, revolving credit facility Subordinated Loan and our cash flows from operating activities, will be adequate to fund our operations.operations and capital expenditures for 2024. We may seek to access the capitaldebt markets to fund some or all capital expenditures for growth projects or acquisitions, to refinance maturing debt or for general partnership purposes. Our abilityWe have an effective shelf registration statement on file with the SEC under which we may publicly issue $1.5 billion of debt securities, warrants or rights from time to accesstime. We have $600.0 million of notes maturing in December 2024, which we expect to retire near or at maturity through available capital resources, including borrowing under our revolving credit facility or publicly issuing debt securities. In June 2023, our revolving credit facility was amended to extend the capital markets for equitymaturity date by one year to May 26, 2028. In December 2023, we paid a $300.0 million distribution to our general partner and BPHC. As of December 31, 2023, we have $4.1 billion of contractual cash payment obligations under firm agreements, of which $3.9 billion represents principal and interest payments related to our long-term debt. Note 12 in Part II, Item 8. of this Annual Report on Form 10-K contains more information regarding our long-term debt and financing under reasonable terms depends onactivities and Notes 5 and 6 contain more information about our financial condition, credit ratings and market conditions.other commitments.

Credit Ratings

Most of our senior unsecured debt is rated by independent credit rating agencies. The credit ratings affect our ability to access the public and private debt markets, as well as the terms and the cost of our borrowings. Our ability to satisfy financing requirements or fund planned growth capital expenditures will depend upon our future operating performance and our ability to access the capital markets, which are affected by economic factors in our industry as well as other financial and business factors, some of which are beyond our control. As of February 13, 2018,2, 2024, our credit ratings for our senior unsecured notes (including those issued by Boardwalk Pipelines) and that of our operating subsidiariessubsidiary having outstanding rated debt were as follows:    

Rating agencyRating
(Us/Operating
 Subsidiary)
Outlook
(Us/Operating
Subsidiary)
Rating agency
Rating
(Us/Operating
 Subsidiaries)
Outlook
(Us/Operating
Subsidiaries)
Standard and Poor'sBBB-/BBB-Stable/Stable
Moody's Investor ServicesBaa2/Baa1Baa3/Baa2Stable/Stable
Fitch Ratings, Inc.BBB/BBBBBB-/BBB-Stable/Stable

Credit ratings reflect the view of a rating agency and are not a recommendation to buy, sell or hold any security, and may be revised or withdrawn at any time by the rating agency if it determines that the facts and circumstances warrant such a change. Each credit agency’sagency's rating should be evaluated independently of any other credit agency’sagency's rating.

Revolving Credit Facility

Guarantee of Securities of Subsidiaries

Our debt is primarily issued at Boardwalk Pipelines, our wholly owned subsidiary, although we have historically also issued debt at our operating subsidiaries. As of December 31, 2017, we had $385.0 million2023, all of borrowingsthe outstanding under ournotes issued by Boardwalk Pipelines (Subsidiary Issuer) and the full amount of the revolving credit facility, with a weighted-average interest ratewere guaranteed by us (Parent Guarantor). The purpose of 2.72%the guarantees is to help simplify our reporting and no letters of credit issued thereunder. As of capital structure.
February 13, 2018, we had $445.0 million outstanding borrowings under our revolving credit facility, resulting in an available borrowing capacity of approximately $1.1 billion.
In 2017, we extended the maturity date of our revolving credit facility by one additional year to May 26, 2022. The revolving credit facility has a borrowing capacity of $1.5 billion through May 26, 2020, and a borrowing capacity of $1.475 billion from May 27, 2020, to May 26, 2022. The revolving credit facility contains various restrictive covenants and other usual and customary terms and conditions, including the incurrence of additional debt, the sale of assets and sale-leaseback transactions. The financial covenantsWe guarantee amounts borrowed under the revolving credit facility, require us and our subsidiariesbut any amounts borrowed are not subject to maintain, among other things, a ratiothe reporting requirements of total consolidated debt to consolidated EBITDA (as defined in the amended credit agreement) measured for the previous twelve monthsRule 13-01 of not more than 5.0 to 1.0, or up to 5.5 to 1.0, for the three quarters following a qualified acquisition, or seriesRegulation S-X (Rule 13-01). As of acquisitions, where the purchase price exceeds $100.0December 31, 2023, there was $25.0 million over a rolling 12-month period. We and our subsidiaries were in compliance with all covenant requirementsof
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outstanding borrowings under the revolving credit facility asfacility. The following table identifies our principal amounts outstanding for the debt that is subject to the disclosure rules of December 31, 2017. Note 10 in Part II, Item 8Rule 13-01 (in millions):

As of December 31, 2023
Principal amounts guaranteed by Boardwalk Pipeline Partners
    and subject to Rule 13-01 (1)
$3,150.0
Principal amounts not guaranteed (2)
100.0
Other (3)
11.9
Total debt and finance lease obligation$3,261.9

(1)This represents principal amounts of this Report contains more information regardingall outstanding debt at Boardwalk Pipelines subject to the disclosure rules of Rule 13-01 (the Guaranteed Notes).
(2)This represents principal amounts of outstanding debt at Texas Gas.
(3)This represents amounts related to a finance lease, unamortized debt discount and issuance costs and outstanding borrowings under the revolving credit facility.

The Guaranteed Notes are fully and unconditionally guaranteed by the Parent Guarantor on a senior unsecured basis. The guarantees of the Guaranteed Notes rank equally with all of our existing and future senior debt, including our guarantee of indebtedness under our revolving credit facility.


Subordinated Loan Agreement with Affiliate

In 2014, we entered into a Subordinated Loan Agreement with BPHC under which we can borrow up to $300.0 million until December 31, 2018. The Subordinated Loan bears interest at increasing rates, ranging from 5.75% to 9.75%, with the first increase occurring on May 1, 2018, to 7.75%, payable semi-annually in June and December, and matures in July 2024. The Subordinated Loan mustguarantees will be prepaid with the net cash proceeds from the issuance of additional equity securities by us or the incurrence of certain indebtedness by us or our subsidiaries, although BPHC may waive such prepayment. BPHC may also demand prepayment at any time, up to the full amount then outstanding, with 15-months' notice. The Subordinated Loan iseffectively subordinated in right of payment to all of our obligations under our revolving credit facility pursuantfuture secured debt to the terms of a Subordination Agreement between BPHC and Wells Fargo, N.A., as representativeextent of the lenders undervalue of the revolving credit facility. Throughassets securing such debt. There are no restrictions on the filing dateSubsidiary Issuer's ability to pay dividends or make loans to the Parent Guarantor. The guaranteed obligations will be terminated with respect to any series of this Report,notes if that series has been discharged or defeased.

Our operating assets, operating liabilities, operating revenues, expenses and other comprehensive income either exist at or are generated by our operating subsidiaries. The Parent Guarantor and the Subsidiary Issuer have no material assets, liabilities or operations independent of their respective financing activities, including the Guaranteed Notes and advances to and from each other, and their investments in the operating subsidiaries. For these reasons, we have not borrowed any amounts undermeet the Subordinated Loan.criteria in Rule 13-01 to omit the summarized financial information from our disclosures.

Capital Expenditures

We capitalize construction costs and expenditures for major renewals and improvements which extend the lives of the respective assets. In accordance with our partnership agreement, we include as growth expenditures those expenditures associated with projects which are expected to increase an asset’s operating capacity or our revenues or cash flows from that which existed immediately prior to the addition or improvement and which are expected to produce a financial return. Capital expenditures associated with projects that do not meet the preceding criteria are considered maintenance capital expenditures.

We are currently engaged in several growth projects, described in Part I, Item 1, Business - Current Growth Projects, of this Report. In 2017, the Northern Supply Access Project and portions of our Coastal Bend Header and Sulphur Storage and Pipeline Expansion projects were placed into service. In 2018, we signed a precedent agreement for a new project on our Gulf South system that will serve a proposed power plant in Texas. The project will provide approximately 0.2 Bcf/d of firm transportation service by adding compression at an existing compressor station and constructing a lateral. The cost of this project is expected to be approximately $100.0 million and has a proposed in-service date of 2020. This project remains subject to customary approvals. In 2018, we expect to incur capital expenditures of approximately $430.0 million related to our growth projects, which primarily consist of the final portions of the Coastal Bend Header project and a gas treating project in Texas and the following projects in Louisiana: three ethylene transportation and storage projects to serve industrial customers, the development of storage wells and associated infrastructure for brine supply services, and two natural gas transportation projects to serve power plants. All of our growth projects are secured by long-term firm contracts.

Our cost and timing estimates for these projects are subject to a variety of risks and uncertainties, including obtaining regulatory approvals, adverse weather conditions, acquiring the right to construct and operate on other owners’ land, delays in obtaining key materials and shortages of qualified labor. Refer to Part I, Item 1A. Risk Factors of this Report for additional risks associated with our growth projects and the related financing.

The nature of our existing growth projects will require us to enhance or modify our existing assets to accommodate increased operating pressures or changing flow patterns. We consider capital expenditures associated with the modification or enhancement of existing assets in the context of a growth project to be growth capital to the extent that the modification would not have been made in the absence of the growth project without regard to the condition of the existing assets.

Growth capital expenditures were $570.5 million, $469.1 million and $232.0 million for the years ended December 31, 2017, 2016 and 2015. Maintenance capital expenditures for the years ended December 31, 2017, 20162023, 2022 and 20152021, were $137.9$164.5 million, $121.3$157.4 million and $142.5$154.3 million.

Growth capital expenditures for the years ended December 31, 2023, 2022 and 2021, were $217.9 million, $180.2 million and $174.9 million. During the year ended December 31, 2023, we acquired Bayou Ethane for $355.0 million. During the year ended December 31, 2022, we spent $6.7 million on natural gas to be used in our integrated natural gas pipeline system. During the year ended December 31, 2021, we acquired certain natural gas pipeline assets in the Lake Charles, Louisiana, area for approximately $20.0 million in cash.

We expect total capital expenditures to be approximately $550.0$420.0 million in 2018,2024, including approximately $120.0$215.0 million for maintenance capital and $430.0$205.0 million related to growth projects. Refer to
Pipeline System Maintenance for further discussion of trends impacting our maintenance capital expenditures.



Contractual Obligations
The following table summarizes significant contractual cash payment obligations under firm commitments as of December 31, 2017, by period (in millions):
 Total 
Less than
1 Year
 1-3 Years 3-5 Years 
More than
5 Years
Principal payments on long-term debt (1)
$3,710.0
 $185.0
 $350.0
 $1,125.0
 $2,050.0
Interest on long-term debt (2)
1,005.1
 158.8
 287.8
 232.0
 326.5
Capital commitments (3)
171.2
 171.2
 
 
 
Pipeline capacity agreements (4)
17.7
 6.3
 8.4
 3.0
 
Operating lease commitments26.4
 4.3
 8.5
 8.0
 5.6
Capital lease commitments (5)
11.6
 1.0
 2.2
 2.2
 6.2
Total$4,942.0
 $526.6
 $656.9
 $1,370.2
 $2,388.3
(1)
Includes our senior unsecured notes, having maturity dates from 2018 to 2027, and $385.0 million of loans outstanding under our revolving credit facility, having a maturity date of May 26, 2022. The amounts included in the Less than 1 Year column are included in long-term debt on our balance sheet because we have sufficient available borrowing capacity under our revolving credit facility to extend the amount that would come due in less than one year.
(2)Interest obligations represent interest due on our senior unsecured notes at fixed rates. Future interest obligations under our revolving credit facility are uncertain, due to the variable interest rate and fluctuating balances, and are not included in the table above. Based on a 2.72% weighted-average interest rate and an unused commitment fee of 0.18% as of December 31, 2017, our future cash obligations under our revolving credit facility would be $12.5 million, $24.9 million and $17.6 million due in less than one year, 1-3 years and 3-5 years.
(3)Capital commitments represent binding commitments under purchase orders for materials ordered but not received and firm commitments under binding construction service agreements existing at December 31, 2017.
(4)The amounts shown are associated with pipeline capacity agreements on third-party pipelines that allow our operating subsidiaries to transport gas to off-system markets on behalf of our customers.
(5)Capital lease commitments represent future non-cancelable minimum lease payments under a capital lease agreement.

Pursuant to the settlement of the Texas Gas rate case in 2006, we are required to annually fund an amount to the Texas Gas pension plan equal to the amount of actuarially determined net periodic pension cost, including a minimum of $3.0 million. In 2018, we expect to fund approximately $3.0 million to the Texas Gas pension plan.

Distributions

For the years ended December 31, 2017 and 2016, we paid distributions of $102.2 million and for the year ended December 31, 2015, we paid $101.5 million to our partners. Note 12 in Part II, Item 8 of this Report contains further discussion regarding our distributions.

Cash Flows from Operating, Investing and Financing Activities

A significant portion of our revenues are fee-based, being derived from capacity reservation charges under firm transportation agreements with customers, and our operating expenses do not vary significantly from period to period. Significant variability in cash flows from period to period generally results from changes in capital expenditures, pipeline maintenance costs and financing transactions, as well as other longer-term trends in our business which impact earnings, such as lower pricing on contract renewals and other factors, all of which are discussed elsewhere in this MD&A.

Changes in cash flow from operating activities

Net cash provided by operating activities increased $36.2 million to $637.0 million for the year ended December 31, 2017, compared to $600.8 million for the comparable 2016 period primarily due to the change in net income, excluding the effects of non-cash items such as depreciation, amortization and the loss on the sale of operating assets and the 2016 settlement of the Gulf South rate refund.



Changes in cash flow from investing activities

Net cash used in investing activities increased $54.4 million to $644.6 million for the year ended December 31, 2017, compared to $590.2 million for the comparable 2016 period. The increase is a result of an increase in capital expenditures of $118.0 million related to our growth projects discussed in Capital Expenditures, partially offset from proceeds received from the sale of the Flag City processing plant and related assets.

Changes in cash flow from financing activities

Net cash provided by financing activities increased $29.7 million to $20.6 million for the year ended December 31, 2017, compared to $9.1 million cash used for the comparable 2016 period. The increase in cash provided by financing activities resulted primarily from an increase in net borrowings of $29.9 million.
Impact of Inflation

The cumulative impact of inflation over a number of years has resulted in increased costs for current replacement of productive facilities. The majority of our PPE is subject to rate-making treatment, and under current FERC practices, recovery is limited to historical costs. Amounts in excess of historical cost are not recoverable unless a rate case is filed. However, cost-based regulation, along with competition and other market factors, may limit our ability to price jurisdictional services to ensure recovery of inflation’s effect on costs.

Off-Balance Sheet Arrangements

At December 31, 2017, we had no guarantees of off-balance sheet debt to third parties, no debt obligations that contain provisions requiring accelerated payment of the related obligations in the event of specified levels of declines in credit ratings and no other off-balance sheet arrangements.

Critical Accounting Estimates and Policies

Our significant accounting policies are described in Note 2 in Part II, Item 88. of this Report.Annual Report on Form 10-K. The preparation of these consolidated financial statements in accordanceconformity with GAAPaccounting principles generally accepted in the U.S. requires us to make estimates and judgmentsassumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingent assets and liabilities. Estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. The result of this process forms the basis for making judgments about the carrying amountamounts of assets and liabilities that are not readily apparent from other sources. We review our estimates and judgmentsassumptions on a regular, ongoing basis. Changes in facts and circumstances may result in revised estimates and actual results may differ materially from those estimates. Any effects on our business, financial position or results of operations resulting from revisions to these estimates are recorded in the periods in which the facts that give rise to the revisions become known.

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The following accounting policies and estimates are considered critical due to the potentially material impact that the estimates, judgments and uncertainties affecting the application of these policies might have on our reported financial information.

RegulationGoodwill

MostGoodwill represents the excess of our natural gas pipeline subsidiaries are regulated by the FERC. Pursuant to FERC regulations, certain revenues that we collect may be subject to possible refunds to our customers. Accordingly, duringcost of an open rate case, estimatesacquisition over the fair value of rate refund reserves are recorded based on regulatory proceedings, advice of counsel and estimated risk-adjusted total exposure, as well as other factors. As of December 31, 2017 and 2016, there were no liabilities for any open rate case recorded on our Consolidated Balance Sheets.

When certain criteria are met, GAAP requires that certain rate-regulated entities account for and reportthe net identifiable assets acquired and liabilities consistent with the economic effect of the manner in which independent third-party regulators establish rates (regulatory accounting). This basis of accounting is applicable to operations of our Texas Gas subsidiary which records certain costs and benefits as regulatory assets and liabilities in order to provide for recovery from or refund to customers in future periods, but is not applicable to operations associated with the Fayetteville and Greenville Laterals due to rates charged under negotiated rate agreements and a portion of the storage capacity due to the regulatory treatment associated with the rates charged for that capacity.

Effective April 1, 2016, Gulf South implemented a fuel tracker as a result of its settled rate case. We apply regulatory accounting for the fuel tracker, under which the value of fuel received from customers paying the full tariff rate and the related


value of fuel used in transportation are recorded to a regulatory asset or liability depending on whether Gulf South uses more fuel than it collects from customers or collects more fuel than it uses. Other than as described for Texas Gas and Gulf South, regulatory accounting is not applicable to our other FERC-regulated operations.

We monitor the regulatory and competitive environment in which we operate to determine whether our regulatory assets continue to be probable of recovery. If we were to determine that all or a portion of our regulatory assets no longer met the criteria for recognition as regulatory assets, that portion which was not recoverable would be written off, net of any regulatory liabilities. Note 9 in Part II, Item 8 of this Report contains more information regarding our regulatory assets and liabilities.
Fair Value Measurements

Fair value refers to an exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction in the principal market in which the reporting entity transacts based on the assumptions market participants would use when pricing the asset or liability assuming its highest and best use. A fair value hierarchy has been established that prioritizes the information used to develop those assumptions giving priority, from highest to lowest, to quoted prices in active markets for identical assets and liabilities (Level 1); observable inputs not included in Level 1, for example, quoted prices for similar assets and liabilities (Level 2); and unobservable data (Level 3), for example, a reporting entity’s own internal data based on the best information available in the circumstances. We use fair value measurements to account for our asset retirement obligations, any impairment charges and the value of our plan assets associated with our pension and postretirement benefit plans. We also use fair value measurements to perform our goodwill impairment testing and report fair values for certain items in the Notes to the Consolidated Financial Statements in Part II, Item 8 of this Report. Notes 5 and 11 in Part II, Item 8 of this Report contain more information regarding our fair value measurements.

Goodwill

assumed. Goodwill is tested for impairment at the reporting unit level at least annually, as of November 30, or more frequently when events occur and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Accounting requirements provide that a reporting entity may perform an optional qualitative assessment on an annual basis to determine whether events occurred or circumstances changed that would more likely than not reduce the fair value of a reporting unit below its carrying amount. If an initial qualitative assessment identifies that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, or the optional qualitative assessment is not performed, a quantitative analysis underis performed. The quantitative goodwill impairment test is performed by calculating the fair value of the reporting unit and comparing it to the reporting unit's carrying amount. If the fair value of a two-stepreporting unit exceeds its carrying amount, goodwill of the reporting unit is not impaired. However, if the carrying amount of a reporting unit exceeds its fair value, an impairment testloss is recognized in an amount equal to that excess, limited to the total amount of goodwill recorded on the reporting unit.

As of November 30, 2023, our annual goodwill testing date, we performed a quantitative analysis on our two reporting units to measure whether the fair value of the reporting unit is less than its carrying amount. If the fair valueeither of the reporting unit is determined to be less than its carrying amount, including goodwill, the reporting entity must perform an analysis of the fair value of all of the assets and liabilities of the reporting unit. If the implied fair value of the reporting unit's goodwill is determined to be less than its carrying amount, an impairment loss is recognized for the difference. The implied fair value of goodwill is the excess of the fair value of the reporting unit over the fair value amounts assigned to all of the assets and liabilities of that unit as if the reporting unit was acquired in a business combination and the fair value of the reporting unit represented the purchase price.

We performed a quantitative goodwill impairment test for our reporting units as of November 30, 2017, which corresponds with the preparation of our five-year financial plan operating results.was less than their carrying amounts. The fair value measurement of the reporting units was derived based on judgments and assumptions we believe market participants would use in assessing the fair value of the reporting units. These judgments and assumptions included the valuation premise, use of a discounted cash flow model to estimate fair value under an income approach and inputs to the valuation model. The inputs included our five-year financial plan operating results, including operating revenues, the long-term outlook for growth in natural gas and NGLs demand, in the U.S. and measures of the risk-free rate, equity premium and systematic risk used in the calculation of the applied discount rate under the capital asset pricing model.model and views regarding future market conditions, among others. The reasonableness of fair value estimates under the income approach were supported by a market approach under which we applied EBITDA multiples derived from publicly-available information to each reporting unit's EBITDA. The use of alternate judgments and assumptions, including changes in the risk-free rate, could substantially change the results of our goodwill impairment analysis, including the potential recognition of an impairment charge in our Consolidated Financial Statements.

The results of the quantitative goodwill impairment test for 2017 and 20162023 indicated that the fair value of our two reporting units significantly exceeded their carrying amounts and no goodwill impairment charges were recognized forrecognized. The estimated fair values of our reporting units fluctuate from year to year. In 2023, the estimated fair values of the reporting units.units exceeded their carrying amounts by amounts that were similar to that indicated in 2022, with the excess of both reporting units being in the range of 10% - 20%. Although the prospects for our reporting units remain positive, including their strong base operating cash flows and the markets in which they operate, significant changes in future estimated operating revenues or cash flows, or any other changes to the inputs to the valuation model, such as those previously discussed, could result in the recognition of future impairment charges.

Impairment of Long-Lived Assets (including Tangible and Definite-Lived Intangible Assets)

We evaluate whether the carrying amounts of our long-lived and intangible assets have been impaired when circumstances indicate the carrying amount of those assets may not be recoverable. The carrying amount is not recoverable if it exceeds the undiscounted sum of cash flows expected to result from the use and eventual disposition of the asset. If the carrying amount is not recoverable, an impairment loss is measured as the excess of the asset’sasset's carrying amount over its fair value. We recognized $5.8 million, $3.8asset impairment charges of $0.4 million and $0.4$7.5 million of asset impairment charges for the years ended December 31, 2017, 20162023 and 2015.



Defined Benefit Plans

We are required2022, and immaterial asset impairment charges for the year ended December 31, 2021. The charges recorded in 2022 were primarily due to make a significant numberan increase in the estimate of assumptions in order to estimate the net liabilities and costsexisting asset retirement obligations related to our pension and postretirement benefit obligations to employees under our benefit plans. The assumptions that have the most impact on our pension and postretirement benefit costs are the discount rate, the expected return on plan assets and the rate of compensation increases. These assumptions are evaluated relative to current market factors in the U.S. such as inflation, interest rates and fiscal and monetary policies, as well as our policies regarding management of the plans such as the allocation of plan assets among investment options. Changes in these assumptions can have a material impact on obligations and related expense associated with these plans.retired assets.

In determining the discount rate assumption, we utilize current market information and liability information provided by our plan actuaries, including a discounted cash flow analysis of our pension and postretirement obligations. In particular, the basis for our discount rate selection was the yield on indices of highly rated fixed income debt securities with durations comparable to that of our plan liabilities and with consideration of the change in interest rates, such as the U.S. Treasury yield curve. The Conduent interest rate curve and the Citibank Pension Liability curve were consistently used as the basis for the change in discount rate from the last measurement date with this measure confirmed by the yield on other broad bond indices. Additionally, we supplement our discount rate decision with a yield curve analysis. The yield curve is applied to expected future retirement plan payments to adjust the discount rate to reflect the cash flow characteristics of the plans. The yield curve is a hypothetical AA/Aa yield curve represented by a series of annualized discount rates reflecting bond issues having a rating of Aa or better by Moody's Investors Service, Inc. Note 11 in Part II, Item 8 of this Report contains more information regarding our pension and postretirement benefit obligations.

Forward-Looking Statements

Investors are cautioned that certainCertain statements contained in this Annual Report on Form 10-K, as well as some statements in our other filings with the SEC and periodic press releases and some oral statements made by our officials and our subsidiaries during presentations about us, are “forward-looking.”"forward-looking." Forward-looking statements include, without limitation, any statement that may project, indicate or imply future results, events, performance, intentions or achievements, and may contain the words “expect,” “intend,” “plan,” “anticipate,” “estimate,” “believe,” “will"expect," "intend," "plan," "anticipate," "estimate," "believe," "will likely result”result" and similar expressions. In addition, any statement made by our management concerning
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future financial performance (including future revenues, earnings or growth rates), ongoing business strategies or prospects and possible actions by our partnershipus or our subsidiaries, are also forward-looking statements.

Forward-looking statements are based on current expectations and projections about future events and their potential impact on us. While management believes that these forward-looking statements are reasonable as and when made, there is no assurance that future events affecting us will be those that we anticipate. All forward-looking statements are inherently subject to a variety of risks and uncertainties, many of which are beyond our control, thatwhich could cause actual results to differ materially from those anticipated or projected. These risks and uncertainties include, among others:

our ability to maintainothers, the impacts of legislative and regulatory initiatives, or replace expiring gas transportationthe implementation thereof, the impacts of climate change, ESG matters and storage contractspipeline safety requirements and to sell short-term capacity on our pipelines;

initiatives, the costs of maintaining and ensuring the integrity and reliability of our pipeline systems, the need to remove pipeline and other assets from service as a result of such activities, and the timing and financial impacts of returning any such assets to service;

the impact of the FERC's rate-making policies and decisions on the services we offer, the rates we are proposing to charge or are charging and our ability to recover the full cost of operating our pipeline, including earning a reasonable return on equity;

the impact of changes to laws and regulations, such as the proposed GHG and methane legislation and other changes in environmental legislations, the pipeline safety bill, and regulatory changes that result from that legislation applicable to interstate pipelines, on our business, including our costs, liabilities and revenues;

we may not complete projects, including growth projects that we have commenced or will commence, the risk of a failure in computer systems or we may complete projects on materially different terms, cost or timing than anticipated and we may not be able to achieve the intended economic or operational benefits of any such projects, if completed;

thecybersecurity attack, successful negotiation, consummation and completion of contemplated transactions, projects and agreements, including obtaining all necessary regulatoryrisks and customer approvalsuncertainties related to the impacts of volatility in energy prices and resolving land owner opposition,our exposure to credit risk relating to default or the


timing, cost, scope, financial performance and execution ofbankruptcy by our recent, current and future acquisitions and growth projects;

the impact to our business of our continuing to make distributions on our common units to our unitholders at our current distribution rate;

the ability of our customers to pay for our services, including the ability of any foundation shippers on our growth projects to provide required credit support or otherwise comply with the terms of precedent agreements;

the impact of new pipelines or new gas supply sources on competition and basis spreads on our pipeline systems;

volatility or disruptions in the capital or financial markets;

the success of our strategy to grow and diversify our business, including expansion into new product lines and geographic areas, especially in light of the unstable price levels of oil and natural gas experienced over the past several years, which can influence the associated production of these commodities;

the impact on our system throughput and revenues from changes in the supply of and demand for natural gas;

our ability to access the bank and capital markets on acceptable terms to refinance our outstanding indebtedness and to fund our capital needs;

operational hazards, litigation and unforeseen interruptions for which we may not have adequate or appropriate insurance coverage;

the future cost of insuring our assets; and

our ability to access new sources of natural gas and the impact on us of any future decreases in supplies of natural gas in our supply areas.

customers. Developments in any of these areas could cause our results to differ materially from results that have been or may be anticipated or projected. Forward-looking statements speak only as of the date they are made and we expressly disclaim any obligation or undertaking to update these statements to reflect any change in our expectations or beliefs or any change in events, conditions or circumstances on which any forward-looking statement is based.


Refer to Part I, Item 1A. of this Annual Report on Form 10-K for additional risks and uncertainties regarding our forward-looking statements.
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34




Item 7A. Quantitative and Qualitative Disclosures About Market Risk
 
Interest rate risk:Rate Risk

With the exception of our revolving credit facility, for which the interest rates are periodically reset, our debt has been issued at fixed rates. For fixed-rate debt, changes in interest rates affect the fair value of the debt instruments but do not directly affect our earnings or cash flows. The following table presents market risk associated with our fixed-rate, long-term debt at December 31, 2023 and 2022 (in millions, except interest rates):

2017 2016 20232022
Carrying amount of fixed-rate debt$3,302.5
 $3,378.9
Fair value of fixed-rate debt$3,504.4
 $3,529.2
100 basis point increase in interest rates and resulting debt decrease$167.5
 $148.3
100 basis point decrease in interest rates and resulting debt increase$179.9
 $160.2
100 basis point increase in interest rates and resulting
fair value of debt decrease
100 basis point decrease in interest rates and resulting
fair value of debt increase
Weighted-average interest rate5.18% 5.46%Weighted-average interest rate4.84 %4.84 %

At December 31, 2017,2023, we had $385.0$25.0 million ofoutstanding under variable-rate debt outstandingagreements at a weighted-average interest rate of 2.72%6.71%. A 1%100 basis point increase in interest rates would increase our cash payments for interest on our variable-rate debt by $3.9$0.3 million on an annualized basis. At December 31, 2016,2022, we had $180.0 million outstanding underno variable-rate agreements at a weighted-average interest rate of 1.96%.debt outstanding.
    
Commodity Risk
At December 31, 2017
For the natural gas and 2016, $17.6 millionNGLs (other than ethane supply services) which our pipelines transport and $4.6 million of our undistributed cash, shown on the Consolidated Balance Sheets as Cash and cash equivalents, was primarily invested in Treasury fund accounts. Due to the short-term nature of the Treasury fund accounts, a hypothetical 10% increase or decrease in interest rates would not have a material effect on the fair market value of our Cash and cash equivalents.

Commodity risk:

Our pipelinesstore, we do not take title to the natural gas and NGLs which they transport and store,these products; therefore, theywe do not assume the related commodity price risk associated with these products. For our ethane supply services, which require us to enter into ethane sales and purchase agreements and take title to those products, the products. However, certainpricing contained in those purchase and sales agreements is generally based on the same ethane commodity index, plus a fixed delivery fee. As a result, except for possible timing differences that may occur when volumes ofare purchased in one month and sold in another month, our gas stored underground are available for sale and subjectethane supply services, like our other businesses, result in us having little to no direct commodity price risk. At December 31, 2017 and 2016, approximately $6.4 million and $1.2 million of gas stored underground, which we own and carry as current Gas and liquids stored underground, was available for sale and exposed to commodity price risk. We have historically managed our exposure to commodity price risk through the use of futures, swaps and option contracts; however, at December 31, 2017 and 2016, we had no outstanding derivatives.exposure.

Credit risk:Risk

Our credit exposure generally relates to receivables for services provided, as well as volumes owed by customers for imbalances or gas lent by us to them, generally under PAL and NNS.certain firm services. Natural gas price volatility can materially increase credit risk related to gas loaned to customers. We also have credit risk related to customers supporting some of our growth projects. If any significant customer of ours should have credit or financial problems resulting in a delay or failure to pay for services provided by us or repay gas they owe to us, or post required credit support, this could have a material adverse effect on our business, financial condition, results of operations or cash flows.

As of December 31, 2017,2023, the amount of gas loaned out by our subsidiaries or owed to our operating subsidiaries due to gas imbalances and gas loaned under PAL and certain firm service agreements was approximately 12.311.2 trillion British thermal units (TBtu). Assuming an average market price during December 20172023 of $2.76$2.33 per million British thermal unitsunit (MMBtu), the market value of that gas was approximately $34.0$26.1 million. As of December 31, 2017,2022, the amount of gas owed to our operating subsidiaries due to gas imbalances and gas loaned under PAL and certain firm service agreements was approximately 13.3 TBtu. Assuming an average market price during December 2022 of $5.33 per MMBtu, the market value of that gas was approximately $70.9 million. As of December 31, 2023 and 2022, there were no outstanding NGL imbalances owed to our operating subsidiaries. As of December 31, 2016, the amount of gas loaned out by our subsidiaries or owed to our subsidiaries due to gas imbalances was approximately 13.6 TBtu. Assuming an average market price during December 2016 of $3.47 per MMBtu, the market value of this gas at December 31, 2016, would have been approximately $47.2 million. As of December 31, 2016, the amount of NGLs owed to our operating subsidiaries due to imbalances was less than 0.1 MMBbls, which had a market value of approximately $0.4 million.

Although nearly all of our customers pay for our services on a timely basis, we actively monitor the credit exposure to our customers. We include in our ongoing assessments, amounts due pursuant to services we render plus the value of any gas we have lent to a customer through NNS or PAL services and the value of gas due to us under a transportation imbalance. Our natural gas pipeline tariffs contain language that allow us to require a customer that does not meet certain credit criteria to provide cash


collateral, post a letter of credit or provide a guarantee from a credit-worthy entity in an amount equaling up to three months of capacity reservation charges. For certain agreements with customers, for example, those related to our growth projects, we have included contractual provisions that require additional credit support should the credit ratings of those customers fall below investment grade.

Natural gas producers comprise a significant portion of our revenues and support several of our growth projects. For example, in 2017, approximately 46% of our revenues were generated from contracts with natural gas producers. The prices of oil and natural gas have been unstable over the past several years as a result of increasing gas supplies, mainly from shale production areas in the U.S. Should the prices of oil and natural gas continue to remain unstable, we could be exposed to increased credit risk associated with our producer customer group. We continue to monitor our credit risk carefully, especially as it relates to customers that may be affected by the current oil and natural gas markets. Refer to Part I, Item 1A. Risk Factors - We are exposed to credit risk relating to default or bankruptcy by our customers for further discussion regarding credit risk.


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35




Item 8. Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of Boardwalk GP, LLC
and the Partners of Boardwalk Pipeline Partners, LP

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Boardwalk Pipeline Partners, LP and subsidiaries (the “Partnership”"Company") as of December 31, 20172023 and 2016, and2022, the related consolidated statements of income, comprehensive income, cash flows and changes in equitypartners' capital, for each of the three years in the period ended December 31, 20172023, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the PartnershipCompany as of December 31, 20172023 and 2016,2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2023, in conformity with the accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Partnership's internal control over financial reporting as of December 31, 2017, based on the criteria established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 15, 2018, expressed an unqualified opinion on the Partnership's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Partnership'sCompany's management. Our responsibility is to express an opinion on the Partnership'sCompany's financial statements based on our audits. We are a public accounting firm registered with the PCAOBPublic Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the PartnershipCompany in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit council and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Goodwill — Refer to Notes 2 and 9 to the financial statements

Critical Audit Matter Description

Goodwill is tested for impairment at the reporting unit level at least annually as of November 30, or more frequently when events occur and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. As of November 30, 2023, the Company performed a quantitative analysis for its annual goodwill impairment test of its two reporting units to measure whether the fair value of either of the reporting units is less than their carrying amounts. If the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill recorded on the reporting unit.

The fair value measurement of the reporting units is derived based on judgments and assumptions, including the use of a discounted cash flow model to estimate fair value and inputs to the valuation model. The inputs included the five-year financial plan operating results, including operating revenues, the long-term outlook for growth in natural gas and NGLs
36


demand, and the applied discount rate. The use of alternate judgments and assumptions could substantially change the results of the goodwill impairment analysis, including the recognition of an impairment charge in the Consolidated Statement of Income. The results of the quantitative goodwill impairment test indicated that the fair value of the Company's reporting units exceeded their carrying amounts and no goodwill impairment charges were recognized.

We identified goodwill for Boardwalk Pipeline Partners, LP as a critical audit matter because of the significant judgments made by management to estimate the fair value of each reporting unit. This required a high degree of auditor judgment and an increased extent of effort, including the need to involve fair value specialists, when performing audit procedures to evaluate the reasonableness of management's judgments and assumptions related to the applied discount rate, the long-term outlook for growth in natural gas and NGLs demand, and the Company's future estimated operating revenues within the five-year financial plan operating results.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management's assumptions underlying the applied discount rates, the long-term outlook for growth in natural gas and NGLs demand, and the Company's future estimated operating revenues within the five-year financial plan operating results included the following, among others:

We tested the effectiveness of controls over management's goodwill impairment test, including controls over management's estimate of the applied discount rate, the long-term outlook for growth in natural gas and NGLs demand, and the future estimated operating revenues for each reporting unit.
We evaluated management's ability to accurately forecast future operating revenues by comparing actual results to management's historical forecasts for each reporting unit.
We evaluated the reasonableness of the future estimated operating revenues within the five-year financial plan operating results by comparing the forecasts to:
Historical operating revenues of the Company’s similar or existing contracts with customers and average annual growth rates.
Forecasted information in analyst and industry reports for the Company and certain of its peer companies.
We evaluated contracts subject to renewal within the five-year financial plan by making a selection of contracts and assessing the reasonableness of renewal assumptions, including rates and volumes.
With the assistance of our fair value specialists, we evaluated the reasonableness of the applied discount rate, and the long-term outlook for growth in natural gas and NGLs demand used as inputs to management's goodwill impairment test for each reporting unit by:
Comparing the Company's estimate of the long-term outlook for growth in natural gas and NGLs demand for each reporting unit to industry reports and other market data.
Developing a range of independent estimates of the applied discount rate for each reporting unit and comparing those to the applied discount rates selected by management for each reporting unit.

Acquisition — Purchase Price Allocation — Refer to Note 3 to the financial statements

Critical Audit Matter Description

The Company completed the acquisition of Williams Olefins Pipeline Holdco LLC ("Bayou Ethane") for cash consideration of $355.0 million on September 29, 2023. The Company accounted for the acquisition of Bayou Ethane as a business combination. Accordingly, the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated fair values on the date of acquisition. The fair values for property, plant and equipment (PPE), including rights-of-way, were determined primarily using a combination of the market and cost approaches. The fair values for the customer-based intangibles were determined using a discounted cash flow analysis with inputs not observable in the market, such as estimated future cash flows and weighted average cost of capital rates, which were considered Level 3 fair value estimates.

We identified the acquisition of Bayou Ethane as a critical audit matter because of the estimates management made to determine the fair value of assets acquired and liabilities assumed. This required a high degree of auditor judgment and an increased extent of effort, including the need to involve fair value specialists, when performing audit procedures to evaluate the weighted average cost of capital and the fair value of acquired property, plant and equipment, including rights-of-way, and intangible assets.

37


How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the fair value of assets acquired and liabilities assumed for Bayou Ethane included the following, among others:

We tested the effectiveness of controls over the purchase price allocation, including management's controls over the assumptions used in the valuation of the property, plant, and equipment, including rights-of-way, and intangible assets, including estimating the appraisal and fair value of the acquired property, plant and equipment and intangible assets, determination of the weighted average cost of capital, and reviewing the work of third-party specialists.
With the assistance of our fair value specialists:
We evaluated the reasonableness of selected valuation methodologies, and use of management's experts.
We tested cost to acquire or construct comparable assets and the remaining useful lives used for the cost approach for property, plant and equipment, including rights-of-way, and compared such estimates to independent market information to determine reasonableness.
We tested the methodology used for the valuation of intangible assets.
We developed a range of independent estimates of the weighted average cost of capital and compared that to the weighted average cost of capital utilized by management.

/s/ Deloitte & Touche LLP
Houston, Texas
February 15, 20186, 2024

We have served as the Partnership'sCompany's auditor since 2003.


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38






BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED BALANCE SHEETS
(Millions)

 December 31,
ASSETS20232022
Current Assets:  
Cash and cash equivalents$20.1 $215.6 
Receivables:  
Trade, net204.6 148.4 
Other24.9 25.4 
Gas transportation receivables7.0 22.0 
Gas stored underground and other product inventory3.3 41.6 
Prepayments24.3 23.7 
Other current assets4.5 8.7 
Total current assets288.7 485.4 
Property, Plant and Equipment:  
Natural gas transmission and other plant13,242.3 12,616.7 
Construction work in progress287.2 187.6 
Property, plant and equipment, gross13,529.5 12,804.3 
Less—accumulated depreciation and amortization4,672.9 4,288.3 
Property, plant and equipment, net8,856.6 8,516.0 
Other Assets:  
Goodwill237.4 237.4 
Gas stored underground99.3 153.5 
Other214.4 177.6 
Total other assets551.1 568.5 
Total Assets$9,696.4 $9,569.9 
 December 31,
ASSETS2017 2016
Current Assets:   
Cash and cash equivalents$17.6
 $4.6
Receivables: 
  
Trade, net116.8
 127.1
Other16.6
 12.7
Gas transportation receivables4.6
 8.2
Gas and liquids stored underground6.5
 1.3
Prepayments17.9
 17.7
Other current assets0.6
 2.6
Total current assets180.6
 174.2
    
Property, Plant and Equipment: 
  
Natural gas transmission and other plant10,467.1
 9,958.8
Construction work in progress416.5
 368.5
Property, plant and equipment, gross10,883.6
 10,327.3
Less—accumulated depreciation and amortization2,621.1
 2,333.8
Property, plant and equipment, net8,262.5
 7,993.5
    
Other Assets: 
  
Goodwill237.4
 237.4
Gas stored underground86.3
 93.5
Other139.8
 139.2
Total other assets463.5
 470.1
    
Total Assets$8,906.6
 $8,637.8

The accompanying notes are an integral part of these consolidated financial statements.

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BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED BALANCE SHEETS
(Millions)

 December 31,
LIABILITIES AND PARTNERS' CAPITAL20232022
Current Liabilities:  
Payables:  
Trade$113.2 $70.7 
Affiliates3.4 2.6 
Other16.4 17.4 
Gas transportation payables7.8 41.2 
Accrued taxes, other67.9 62.8 
Accrued interest34.2 33.9 
Accrued payroll and employee benefits44.0 38.3 
Regulatory liabilities15.1 55.1 
Other current liabilities60.3 50.7 
Total current liabilities362.3 372.7 
Long-term debt and finance lease obligation3,261.9 3,233.4 
Other Liabilities and Deferred Credits:  
Pension liability4.7 8.8 
Asset retirement obligations59.2 53.9 
Provision for other asset retirement98.1 93.2 
Other119.1 105.7 
Total other liabilities and deferred credits281.1 261.6 
Commitments and Contingencies
Partners' Capital:  
Partners' capital5,867.7 5,781.7 
Accumulated other comprehensive loss(76.6)(79.5)
Total partners' capital5,791.1 5,702.2 
Total Liabilities and Partners' Capital$9,696.4 $9,569.9 
 December 31,
LIABILITIES AND PARTNERS' CAPITAL2017 2016
Current Liabilities:   
Payables:   
Trade$76.0
 $113.8
Affiliates1.5
 1.4
Other11.9
 23.7
Gas payables5.7
 6.7
Accrued taxes, other57.1
 52.7
Accrued interest37.9
 40.6
Accrued payroll and employee benefits33.7
 38.5
Construction retainage32.4
 19.6
Deferred income1.9
 7.5
Other current liabilities22.3
 28.4
Total current liabilities280.4
 332.9
    
Long–term debt and capital lease obligation3,686.8
 3,558.0
    
Other Liabilities and Deferred Credits: 
  
Pension liability21.8
 22.0
Asset retirement obligation46.0
 44.7
Provision for other asset retirement65.8
 63.7
Payable to affiliate16.0
 16.0
Other65.0
 69.6
Total other liabilities and deferred credits214.6
 216.0
    
Commitments and Contingencies


 


    
Partners’ Capital: 
  
Common units – 250.3 million units issued and
     outstanding as of December 31, 2017 and 2016
4,713.1
 4,522.2
General partner92.7
 88.8
Accumulated other comprehensive loss(81.0) (80.1)
Total partners’ capital4,724.8
 4,530.9
Total Liabilities and Partners' Capital$8,906.6
 $8,637.8

The accompanying notes are an integral part of these consolidated financial statements.



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40






BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED STATEMENTS OF INCOME
(Millions, except per unit amounts)(Millions)
 For the Year Ended December 31,
 202320222021
Operating Revenues:   
Transportation$1,287.0 $1,228.8 $1,152.6 
Storage, parking and lending160.9 129.2 110.4 
Product sales100.3 11.1 11.7 
Other69.5 62.9 65.4 
Total operating revenues1,617.7 1,432.0 1,340.1 
Operating Costs and Expenses:   
Fuel and transportation26.3 22.4 22.1 
Product costs87.8 1.0 — 
Operation and maintenance281.0 250.9 226.9 
Administrative and general171.9 147.7 144.6 
Depreciation and amortization408.7 392.3 366.3 
Loss (gain) on sale of assets, impairments and other0.3 4.0 (0.1)
Taxes other than income taxes115.5 114.5 113.2 
Total operating costs and expenses1,091.5 932.8 873.0 
Operating income526.2 499.2 467.1 
Other Deductions (Income):   
Interest expense155.6 165.9 160.8 
Interest income(12.1)(3.3)— 
Miscellaneous other income, net(4.1)(6.4)(9.4)
Total other deductions139.4 156.2 151.4 
Income before income taxes386.8 343.0 315.7 
Income taxes0.8 0.8 0.7 
Net income$386.0 $342.2 $315.0 
 For the Year Ended December 31,
 2017 2016 2015
Operating Revenues:     
Transportation$1,180.7
 $1,142.4
 $1,091.1
Parking and lending20.2
 18.2
 11.4
Storage81.5
 91.4
 81.3
Other40.2
 55.2
 65.4
Total operating revenues1,322.6
 1,307.2
 1,249.2
      
Operating Costs and Expenses: 
  
  
Fuel and transportation54.8
 70.8
 99.3
Operation and maintenance204.2
 199.9
 209.5
Administrative and general126.5
 142.2
 130.4
Depreciation and amortization322.8
 317.8
 323.7
Loss (gain) on sale of assets and impairments49.0
 3.7
 (0.1)
Taxes other than income taxes98.8
 95.3
 90.6
Total operating costs and expenses856.1
 829.7
 853.4
      
Operating income466.5
 477.5
 395.8
      
Other Deductions (Income): 
  
  
Interest expense171.0
 182.8
 176.4
Interest income(0.4) (0.4) (0.4)
Miscellaneous other income, net(2.1) (7.7) (2.7)
Total other deductions168.5
 174.7
 173.3
      
Income before income taxes298.0
 302.8
 222.5
      
Income taxes1.0
 0.6
 0.5
      
Net income297.0
 302.2
 222.0
Net Income per Unit:   
  
      
Net income per common unit$1.16
 $1.18
 $0.87
Weighted-average number of common
    units outstanding
250.3
 250.3
 248.8
Cash distribution declared and paid to common units
     per common unit
$0.40
 $0.40
 $0.40

The accompanying notes are an integral part of these consolidated financial statements.


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41






BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Millions)

 For the Year Ended December 31,
 202320222021
Net income$386.0 $342.2 $315.0 
Other comprehensive income (loss):   
Reclassification adjustment transferred to Net income from cash flow hedges0.1 0.5 0.9 
Pension and other postretirement benefit costs, net of tax2.8 (7.4)6.3 
Total Comprehensive Income$388.9 $335.3 $322.2 
 For the Year Ended December 31,
 2017 2016 2015
Net income$297.0
 $302.2
 $222.0
Other comprehensive income (loss): 
  
  
Loss on cash flow hedge(1.5) 
 
Reclassification adjustment transferred to Net income from cash flow hedges2.5
 2.4
 2.4
Pension and other postretirement benefit costs(1.9) 1.8
 (13.9)
Total Comprehensive Income$296.1
 $306.4
 $210.5

The accompanying notes are an integral part of these consolidated financial statements.


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42






BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Millions)
For the Year Ended December 31,
For the Year Ended
December 31,
2023202320222021
OPERATING ACTIVITIES:2017 2016 2015
Net income
Net income
Net income$297.0
 $302.2
 $222.0
Adjustments to reconcile net income to cash provided by operations: 
    
Depreciation and amortization322.8
 317.8
 323.7
Depreciation and amortization
Depreciation and amortization
Amortization of deferred costs and other8.1
 2.1
 7.7
Loss (gain) on sale of assets and impairments49.0
 3.7
 (0.1)
Loss (gain) on sale of assets, impairments and other
Changes in operating assets and liabilities: 
    
Trade and other receivables6.1
 (10.4) (18.6)
Gas receivables and storage assets5.6
 10.9
 (14.3)
Costs recoverable from customers3.8
 
 (0.3)
Other assets(3.8) 0.8
 (3.2)
Trade and other receivables
Trade and other receivables
Gas transportation receivables, storage assets and other product
inventory
Gas transportation receivables, storage assets and other product
inventory
Gas transportation receivables, storage assets and other product
inventory
Prepayments and other assets
Prepayments and other assets
Prepayments and other assets
Trade and other payables(14.0) (20.0) 39.4
Other payables, affiliates
 (0.1) (0.7)
Gas payables(5.8) 5.3
 (3.7)
Gas transportation payables
Accrued liabilities(4.1) 9.9
 0.3
Regulatory assets and liabilities
Other liabilities(27.7) (21.4) 24.2
Net cash provided by operating activities637.0
 600.8
 576.4
INVESTING ACTIVITIES: 
  
  
INVESTING ACTIVITIES:  
Capital expenditures(708.4) (590.4) (374.5)
Proceeds from sale of operating assets63.8
 0.2
 0.8
Proceeds from other recoveries
 
 6.2
Acquisition of business
Acquisition of business
Acquisition of business
Net cash used in investing activities(644.6) (590.2) (367.5)
FINANCING ACTIVITIES: 
  
  
FINANCING ACTIVITIES:  
Proceeds from long-term debt, net of issuance cost494.0
 539.1
 247.1
Repayment of borrowings from long-term debt and term loan(575.0) (250.0) (725.0)
Proceeds from borrowings on revolving credit agreement765.0
 490.0
 1,125.0
Repayment of borrowings on revolving credit agreement,
including financing fees
(560.8) (685.8) (873.6)
Principal payment of capital lease obligation(0.5) (0.5) (0.4)
Repayment of borrowings from long-term debt
Proceeds from borrowings on revolving credit facility
Repayments of borrowings on revolving credit facility,
including financing fees
Principal payment of finance lease obligation
Advances from affiliates0.1
 0.3
 0.6
Distributions paid(102.2) (102.2) (101.5)
Proceeds from sale of common units
 
 113.1
Capital contributions from general partner
 
 2.3
Net cash provided by (used in) financing activities20.6
 (9.1) (212.4)
Increase (decrease) in cash and cash equivalents13.0
 1.5
 (3.5)
Net cash used in financing activities
(Decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of period4.6
 3.1
 6.6
Cash and cash equivalents at end of period$17.6
 $4.6
 $3.1

The accompanying notes are an integral part of these consolidated financial statements.

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48






BOARDWALK PIPELINE PARTNERS, LP
CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS'PARTNERS' CAPITAL
(Millions)
 Partners'
Capital
Accumulated Other Comprehensive Income (Loss)Total Partners' Capital
Balance December 31, 2020$5,328.9 $(79.8)$5,249.1 
Add (deduct): 
Net income315.0 — 315.0 
Distributions paid(102.2)— (102.2)
Other comprehensive income, net of tax— 7.2 7.2 
Balance December 31, 2021$5,541.7 $(72.6)$5,469.1 
Add (deduct):  
Net income342.2 — 342.2 
Distributions paid(102.2)— (102.2)
Other comprehensive loss, net of tax— (6.9)(6.9)
Balance December 31, 2022$5,781.7 $(79.5)$5,702.2 
Add (deduct):  
Net income386.0  386.0 
Distributions paid(300.0) (300.0)
Other comprehensive income, net of tax 2.9 2.9 
Balance December 31, 2023$5,867.7 $(76.6)$5,791.1 
 
Common
Units
 
General
Partner
 
Accumulated Other Comp
(Loss) Income
 Total Partners' Capital
Balance January 1, 2015$4,095.1
 $80.0
 $(72.8) $4,102.3
Add (deduct):       
Net income217.5
 4.5
 
 222.0
Distributions paid(99.5) (2.0) 
 (101.5)
Sale of common units, net of
    related transaction costs
113.1
 
 
 113.1
Capital contribution from
    general partner

 2.3
 
 2.3
Other comprehensive loss,
net of tax

 
 (11.5) (11.5)
Balance December 31, 2015$4,326.2
 $84.8
 $(84.3) $4,326.7
Add (deduct):       
Net income296.2
 6.0
 
 302.2
Distributions paid(100.2) (2.0) 
 (102.2)
Other comprehensive income,
net of tax

 
 4.2
 4.2
Balance December 31, 2016$4,522.2
 $88.8
 $(80.1) $4,530.9
Add (deduct): 
  
  
  
Net income291.1
 5.9
 
 297.0
Distributions paid(100.2) (2.0) 
 (102.2)
Other comprehensive loss,
net of tax

 
 (0.9) (0.9)
Balance December 31, 2017$4,713.1
 $92.7
 $(81.0) $4,724.8

The accompanying notes are an integral part of these consolidated financial statements.

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49




BOARDWALK PIPELINE PARTNERS, LP

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1: Corporate Structure

Boardwalk Pipeline Partners, LP (the Partnership)Company) is a Delaware limited partnership formed in 2005 to own and operate the business conducted by its primary subsidiary Boardwalk Pipelines, LP (Boardwalk Pipelines) and its operating subsidiaries, Gulf South Pipeline Company, LPLLC (Gulf South), Texas Gas Transmission, LLC (Texas Gas), Gulf Crossing Pipeline Company LLC (Gulf Crossing), Boardwalk Louisiana Midstream, LLC (Louisiana Midstream), Boardwalk Louisiana Gas Transmission, LLC, Boardwalk Texas Intrastate, LLC, Boardwalk Petrochemical Pipeline, LLC, and Boardwalk Texas Intrastate,Ethane Pipeline Company, LLC (together, the operating subsidiaries), which consists of integrated pipeline and storage systems for natural gas and natural gas liquids and other hydrocarbons (herein referred to together as NGLs) pipeline and storage systems.. All of the Partnership’sCompany's operations are conducted by the operating subsidiaries.

As of February 13, 2018,December 31, 2023, Boardwalk Pipelines Holding Corp. (BPHC), a wholly-ownedwholly owned subsidiary of Loews Corporation (Loews), owned 125.6 milliondirectly or indirectly, 100% of the Partnership’s common units, and, through Boardwalk GP, LP (Boardwalk GP), an indirect wholly-owned subsidiary of BPHC, holds the Company's capital.
2% general partner interest and all of the incentive distribution rights (IDRs) of the Partnership. As of February 13, 2018, the common units and general partner interest owned by BPHC represent approximately 51% of the Partnership’s equity interests, excluding the IDRs. The Partnership’s common units are traded under the symbol “BWP” on the New York Stock Exchange.


Note 2: Basis of Presentation and Significant Accounting Policies


Basis of Presentation

The accompanying consolidated financial statements of the Partnership wereCompany have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S.) (GAAP). Certain amounts reported in Other revenues and Fuel and transportation expense were reclassified to Product sales and Product costs to conform to the current presentation in connection with the acquisition discussed in Note 3. The amounts reclassified represent NGL product sales that occurred during 2022 and 2021. The effect of the reclassification was a decrease in Other revenues and an increase in Product sales of $11.1 million and $11.7 million for the years ended December 31, 2022 and 2021, and a decrease in Fuel and transportation expense and an increase in Product costs of $1.0 million and an immaterial amount for the years ended December 31, 2022 and 2021. These reclassifications had no impact on Total operating revenues, Operating income or Net income.

Principles of Consolidation

The consolidated financial statements include the Partnership’sCompany's accounts and those of its wholly-ownedwholly owned subsidiaries after elimination of intercompany transactions.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosure of contingent assets and liabilities and the fair values of certain items. The PartnershipCompany bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, which form the basis for making judgments about the carrying amounts of assets and liabilities that are not readily apparent from other sources. Actual results could differ from such estimates.

Segment Information

The PartnershipCompany operates in one reportable segment - the operation of interstate natural gas and NGLs pipeline systems and integrated storage facilities. This segment consists of interstate natural gas pipeline systems which are located in the Gulf Coast region, Oklahoma, Arkansas, and the Midwestern states of Tennessee, Kentucky, Illinois, Indiana and Ohio and the Partnership'sintegrated natural gas storage facilities located in Indiana, Kentucky, Louisiana and Mississippi, and NGLs pipelines and storage facilities located in Louisiana and Texas.



Regulatory Accounting

Most of the Partnership'sCompany's natural gas pipeline subsidiaries and its interstate ethane transportation pipeline are regulated by the Federal Energy Regulatory Commission (FERC). When certain criteria are met, GAAP requires that certain rate-regulated entities account for and report assets and liabilities consistent with the economic effect of the manner in which
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independent third-party regulators establish rates (regulatory accounting). This basis of accounting is applicable to operations of the Partnership’sCompany's Texas Gas subsidiary, which records certain costs and benefits as regulatory assets and liabilities in order to provide for recovery from or refundrefunds to customers in future periods, but is not applicable to the operations associated with the Fayetteville and Greenville Laterals due to rates charged under negotiated rate agreements and a portion of theTexas Gas' storage capacity due to the regulatory treatment associated with the rates charged for that capacity.

Effective April 1, 2016, the Partnership's Gulf South subsidiary implemented a fuel tracker as a result of a rate case settlement. The PartnershipCompany also applies regulatory accounting for theits fuel tracker,trackers on Gulf South, under which the value of fuel received from customers paying the maximum tariff rate and the related value of fuel used in transportation are recorded to a regulatory asset or liability depending on whether Gulf South uses more fuel than it collects from customers or collects more fuel than it uses. Prior to the implementation of the fuel tracker and the application of regulatory accounting, the value of fuel received from customers was reflected in operating revenues and the value of fuel used was reflected in operating expenses. Other than as described for Texas Gas and for the fuel trackers on Gulf South, regulatory accounting is not applicable to the Partnership’sCompany's other FERC-regulated operations.

The PartnershipCompany monitors the regulatory and competitive environment in which it operates to determine whether its regulatory assets continue to be probable of recovery. If the Partnership were to determineCompany determines that all or a portion of its regulatory assets no longer metmeets the criteria for recognition as regulatory assets, that portion which wasis not recoverable wouldwill be written off, net of any regulatory liabilities.

Note 911 contains more information regarding the Partnership’sCompany's regulatory assets and liabilities.

Fair Value Measurements

Fair value refers to an exit price that would be received to sell an asset or paid to transfer a liability in an orderly transaction in the principal market in which the reporting entity transacts based on the assumptions market participants would use when pricing the asset or liability assuming its highest and best use. A fair value hierarchy has been established that prioritizes the information used to develop those assumptions giving priority, from highest to lowest, to quoted prices in active markets for identical assets and liabilities (Level 1); observable inputs not included in Level 1, for example, quoted prices for similar assets and liabilities (Level 2); and unobservable data (Level 3), for example, a reporting entity’sentity's own internal data based on the best information available in the circumstances. The PartnershipCompany uses fair value measurements to account for business combinations, equity securities, asset retirement obligations (ARO), pension and postretirement benefits other than pension (PBOP) assets and any impairment charges. Fair value measurements are also used to perform goodwill impairment testing and report fair values for certain items contained in this Report. The Partnership considers any transfers between levels within the fair value hierarchy to have occurred at the beginning of a quarterly reporting period. The Partnership did not recognize any transfers between Level 1 and Level 2 of the fair value hierarchy and did not change its valuation techniques or inputs during the year ended December 31, 2017.

Notes 53, 7 and 1113 contain more information regarding fair value measurements.

Cash and Cash Equivalents

Cash equivalents are highly liquid investments with an original maturity of three months or less and are stated at cost plus accrued interest, which approximates fair value. The PartnershipCompany had no restricted cash at December 31, 20172023 and 2016.2022.

Cash Management

The operating subsidiaries participate in an intercompany cash management program with those that are FERC-regulated participating to the extent they are permitted under FERC regulations. Under the cash management program, depending on whether a participating subsidiary has short-term cash surpluses or cash requirements, Boardwalk Pipelines either provides cash to them or they provide cash to Boardwalk Pipelines. The transactions are represented by demand notes and are stated at historical carrying amounts. Interest income and expense are recognized on an accrual basis when collection is reasonably assured. The interest rate on intercompany demand notes is London Interbank Offered Rate (LIBOR) plus 1% and is adjusted every three months.



Trade and Other Receivables

Trade and other receivables are stated at their historical carrying amount, net of allowances for doubtful accounts. The PartnershipCompany establishes an allowance for doubtful accounts under an expected credit loss model based on a case-by-case basis when it believes the required payment ofhistorical credit loss experience and specific amounts owed is unlikely to occur.facts and circumstances. Uncollectible receivables are written off when a settlement is reached for an amount that is less than the outstanding historical balance or a receivable amount is deemed otherwise unrealizable.

Gas Stored Underground and Gas Receivables and Payables

Certain of the Partnership'sCompany's operating subsidiaries have underground gas in storage which is utilized for system management and operational balancing, as well as for services including firm and interruptible storage associated with certain no-notice (NNS) and parking and lending (PAL) services. Gas stored underground includes the historical cost of natural gas volumes owned by the operating subsidiaries, at times reduced by certain operational encroachments upon that gas. Current gas stored underground represents net retained fuel remaining after providing transportation and storage services which is available for resale and is valued at the lower of weighted-average cost or market.

The operating subsidiaries provide storage services whereby they store natural gas or NGLs on behalf of customers and also periodically hold customer gas under PAL services. Since the customers retain title to the gas held by the PartnershipCompany in providing these services, the PartnershipCompany does not record the related gas on its balance sheet.the Consolidated Balance Sheets. Certain of the Partnership'sCompany's operating subsidiaries also periodically lend gas and NGLs to customers.

In the course of providing transportation and storage services to customers, the operating subsidiaries may receive different quantities of gas from shippers and operators than the quantities delivered on behalf of those shippers and operators.
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This results in transportation and exchange gas receivables and payables, commonly known as imbalances, which are primarily settled in cash or the receipt or delivery of gas in the future. Settlement of imbalances requires agreement between the pipelines and shippers or operators as to allocations of volumes to specific transportation contracts and timing of delivery of gas based on operational conditions. The receivables and payables are valued at market price for operations where regulatory accounting is not applicable and are valued at the historical value of gas in storage for operations where regulatory accounting is applicable.

Materials and Supplies

Materials and supplies are carried at average cost and are included in Other Assets on the Consolidated Balance Sheets. The PartnershipCompany expects its materials and supplies to be used for projects related to its property, plant and equipment (PPE) and for future growth projects. At December 31, 20172023 and 2016,2022, the PartnershipCompany held approximately $20.1$38.1 million and $19.2$34.3 million of materials and supplies.

Property, Plant and Equipment and Repair and Maintenance Costs

PPE is recorded at its original cost of construction or fair value of assets purchased. Construction costs and expenditures for major renewals and improvements which extend the lives of the respective assets are capitalized. Construction work in progress is included in the financial statements as a component of PPE. Repair and maintenance costs are expensed as incurred.

Depreciation of PPE related to operations for which regulatory accounting does not apply is provided for using the straight-line method of depreciation over the estimated useful lives of the assets, which range from 3 to 35 years. The ordinary sale or retirement of PPE for these assets could result in a gain or loss.loss being recorded in the income statement. Depreciation of PPE related to operations for which regulatory accounting is applicable is provided for primarily on the straight-line method at FERC-prescribed rates over estimated useful lives of 5 to 62 years. Reflecting the application of composite depreciation, gains and losses from the ordinary sale or retirement of PPE for these assets are not recognized in earnings and generally do not impact PPE, net.
    
Note 68 contains more information regarding the Partnership’sCompany's PPE.



Goodwill and Intangible Assets

Goodwill represents the excess of the cost of an acquisition over the fair value of the net identifiable assets acquired and liabilities assumed. Goodwill is tested for impairment at the reporting unit level at least annually, as of November 30, or more frequently when events occur and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. To test goodwill, a quantitative analysis is performed under a two-step impairment testA reporting entity may perform an optional qualitative assessment on an annual basis to measuredetermine whether events occurred or circumstances changed that would more likely than not reduce the fair value of thea reporting unit is less thanbelow its carrying amount. If based upon a quantitative analysisan initial qualitative assessment identifies that it is more likely than not that the fair value of thea reporting unit is less than its carrying amount, includingor the optional qualitative assessment is not performed, a quantitative analysis is performed. The quantitative goodwill impairment test is performed by calculating the Partnership performs an analysis of the fair value of all the assets and liabilities of the reporting unit. If the implied fair value of the reporting unit and comparing it to the reporting unit's goodwill is determined to be less thancarrying amount. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not impaired. However, if the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized forin an amount equal to that excess, limited to the difference.total amount of goodwill recorded on the reporting unit.

Intangible assets are those assets which provide future economic benefit but have no physical substance. The PartnershipCompany recorded intangible assets for customer relationships obtained through its acquisitions. The customer relationships, which are included in Other Assets on the Consolidated Balance Sheets, have a finite life and are being amortized over their estimated useful lives.

Note 7Notes 3 and 9 contains more information regarding the Partnership'sCompany's goodwill and intangible assets.

Impairment of Long-lived Assets (including Tangible and Definite-lived Intangible Assets)

The PartnershipCompany evaluates its long-lived and intangible assets for impairment when, in management’smanagement's judgment, events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. When such a determination has been made, management’smanagement's estimate of undiscounted future cash flows attributable to the remaining economic useful life of the asset (or asset group) is compared to the carrying amount of the asset (or asset group) to determine whether an impairment has occurred. If an impairment of the carrying amount has occurred, the amount of impairment recognized in the
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financial statements is determined by estimating the fair value of the assets (or asset group) and recording a loss to the extent that the carrying amount exceeds the estimated fair value.

Capitalized Interest and Allowance for Funds Used During Construction (AFUDC)

The PartnershipCompany records capitalized interest, which represents the cost of borrowed funds used to finance construction activities for operations where regulatory accounting is not applicable. The PartnershipCompany records AFUDC, which represents the cost of funds, including equity funds, applicable to regulated natural gas transmission plant under construction as permitted by FERC regulatory practices, in connection with the Partnership’sCompany's operations where regulatory accounting is applicable. Capitalized interest and the allowance for borrowed funds used during construction are recognized as a reduction to Interest expense and the allowance for equity funds used during construction is included in Miscellaneous other income, net withinon the Consolidated Statements of Income. The following table summarizes capitalized interest and the allowance for borrowed funds and allowance for equity funds used during construction (in millions):
 For the Year Ended
December 31,
 202320222021
Capitalized interest and allowance for borrowed funds used during construction$3.6 $2.2 $3.8 
Allowance for equity funds used during construction5.7 6.2 7.9 
 For the Year Ended
December 31,
 2017 2016 2015
Capitalized interest and allowance for borrowed funds used during construction$19.2
 $7.4
 $3.4
Allowance for equity funds used during construction1.9
 7.9
 2.7


Income Taxes

The PartnershipCompany is not a taxable entity for federal income tax purposes. As such, it does not directly pay federal income tax. The Partnership’sCompany's taxable income or loss, which may vary substantially from the net income or loss reported inon the Consolidated Statements of Income, is includable in the federal income tax returns of each partner.of its partners. The aggregate difference in the basis of the Partnership’sCompany's net assets for financial and income tax purposes cannot be readily determined as the Partnership does not have access to the information about each partner’s tax attributes related to the Partnership.is $5.6 billion. The subsidiaries of the PartnershipCompany directly incur some income-based state taxes which are presented in Income taxes on the Consolidated Statements of Income.

Note 1314 contains more information regarding the Partnership’sCompany's income taxes.



Revenue Recognition

The maximum rates that may be charged by the majority of the Partnership's operating subsidiaries for their services are established through the FERC’s cost-based rate-making process; however, rates actually charged by those operating subsidiaries may be less than those allowed by the FERC. Revenues from transportation and storage services are recognized in the period the service is provided based on contractual terms and the related volumes transported or stored. In connection with some PAL and interruptible storage service agreements, cash is received at the inception of the service period resulting in the recording of deferred revenues which are recognized in revenues over the period the services are provided. At December 31, 2017 and 2016, the Partnership had deferred revenues of $1.8 million and $8.4 million, which are expected to be recognized through 2018.

Retained fuel is recognized in revenues at market prices in the month of retention for operations where regulatory accounting is not applicable. The related fuel consumed in providing transportation services is recorded in Fuel and transportation expenses at market prices in the month consumed. In some cases, customers may elect to pay cash for the cost of fuel used in providing transportation services instead of having fuel retained in-kind. Retained fuel included in Transportation on the Consolidated Statements of Income for the years ended December 31, 2017, 2016 and 2015, was $28.0 million, $29.1 million and $53.2 million. As discussed under the Regulatory Accounting policy, Gulf South implemented a fuel tracker effective April 1, 2016, for customers paying the maximum tariff rate. Prior to the implementation of the fuel tracker and the application of regulatory accounting, the value of fuel received from customers was reflected in operating revenues and the value of fuel consumed was reflected in operating expenses.

The Partnership has contractual retainage provisions in some of its ethylene storage contracts that provide for the Partnership to retain ownership of 0.5% of customer inventory volumes injected into storage wells. The Partnership may sell the retainage volumes if commercially marketable volumes are on hand. The Partnership recognizes revenue for ethylene retainage volumes upon the physical sale of such volumes.

Under FERC regulations, certain revenues that the operating subsidiaries collect may be subject to possible refunds to customers. Accordingly, during a rate case, estimated refund liabilities are recorded considering regulatory proceedings, advice of counsel and estimated risk-adjusted total exposure, as well as other factors. At December 31, 2017 and 2016, the Partnership did not have a refund liability for any open rate case recorded on the Consolidated Balance Sheets.

Asset Retirement Obligations

The accounting requirements for existing legal obligations associated with the future retirement of long-lived assets require entities to record the fair value of a liability for an ARO in the period during which the liability is incurred. The liability is initially recognized at fair value and is increased with the passage of time as accretion expense is recorded, until the liability is ultimately settled. The accretion expense is included within Operation and maintenance costs withinon the Consolidated Statements of Income. An amount corresponding to the amount of the initial liability is capitalized as part of the carrying amount of the related long-lived asset and depreciated over the useful life of that asset.

Note 810 contains more information regarding the Partnership’sCompany's ARO.

Environmental Liabilities

The PartnershipCompany records environmental liabilities based on management’smanagement's estimates of the undiscounted future obligation for probable costs associated with environmental assessment and remediation of operating sites. These estimates are based on evaluations and discussions with counsel and operating personnel and the current known facts and circumstances related to these environmental matters.

Note 46 contains more information regarding the Partnership’sCompany's environmental liabilities.

Defined Benefit Plans

The PartnershipCompany maintains postretirement benefit plans for certain employees. The PartnershipCompany funds these plans through periodic contributions which are invested until the benefits are paid out to the participants, and records an asset or liability based on the overfunded or underfunded status of the plan. The net benefit costs of the plans are recorded inon the Consolidated Statements of Income. Any deferred amounts related to unrecognized gains and losses or changes in actuarial assumptions are
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recorded as either a regulatory asset or liability or recorded as a component of accumulated other comprehensive income (AOCI) until those gains or losses are recognized inon the Consolidated Statements of Income.



Note 1113 contains more information regarding the Partnership’sCompany's pension and other postretirement benefit obligations.

Long-Term Compensation
Unit-Based
and Other Long-Term Compensation

The PartnershipCompany provides performance awards of phantom common units (Phantom Common Units)(Performance Awards) to certain of its employees under its 2018 Long-Term Incentive Plan (LTIP)(2018 LTIP). The Partnership also provides toA Performance Award is a long-term incentive award with a stated target amount which is payable in cash, after certain employees awards of long-term cash bonuses (Long-Term Cash Bonuses) under the Boardwalk Pipeline Partners Unit Appreciation Rights (UAR) and Cash Bonus Plan.adjustments, upon vesting based on certain specified performance criteria being met.

The PartnershipCompany measures the cost of an award issued in exchange for employee services based on the grant-date fair value of the award, or the stated target amount in the case of the Long-Term Cash Bonuses and amounts under retention payment agreements.for Performance Awards. All outstanding awards are required to be settled in cash and are classified as a liability until settlement. Unit-based compensation awards are remeasured each reporting period until the final amount of awards is determined. The related compensation expense, less an estimate of forfeitures, is recognized over the period that employees are required to provide services in exchange for the awards, usually the vesting period.

Note 1113 contains more information regarding the Partnership’s unit-based and otherCompany's long-term compensation.

Partner Capital Accounts

For purposes of maintaining capital accounts, items of income and loss of the PartnershipCompany are allocated among the partners each period, or portion thereof, in accordance with the partnership agreement, based on their respective ownership interests, after deductinginterests.

Leases

Operating lease right-of-use assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The discount rate used to determine the commencement date present value of lease payments is typically the Company's secured borrowing rate, as the implicit rate of most of the Company's leases is not readily determinable. The Company has elected not to record any priority allocationsleases with terms of twelve months or less on the Consolidated Balance Sheets.

Revenue Recognition
Nature of Contracts

The Company primarily earns revenues from contracts with customers by providing transportation and storage services for natural gas and NGLs on a firm and interruptible basis and providing ethane supply and transportation services for industrial customers in Louisiana and Texas. The Company also provides interruptible natural gas PAL services. The Company's customers choose, based upon their particular needs, the applicable mix of services depending upon availability of pipeline and storage capacity, the price of services and the volume and timing of customer requirements. The maximum applicable rates that may be charged by the majority of the Company's operating subsidiaries are established through the FERC's cost-based rate-making process; however, the FERC also allows for discounted or negotiated rates as an alternative to cost-based rates. Under the FERC regulations, certain revenues that the Company's subsidiaries collect may be subject to possible refunds to customers. Accordingly, during a rate case, estimated refund liabilities are recorded considering regulatory proceedings, advice of counsel and estimated risk-adjusted total exposure, as well as other factors. The Company's service contracts can range from one to twenty years although the Company may enter into shorter- or longer-term contracts, and services are invoiced monthly with payment from the customer generally expected within ten to thirty days, depending on the terms of the contract. For the ethane supply contracts, the purchases and sales are with different counterparties and control transfers at different receipt and delivery points, resulting in the purchases and sales being presented on a gross basis in the Consolidated Statements of Income.
Firm Service Contracts: The Company offers firm services to its customers. The Company's customers can reserve a specific amount of pipeline capacity at specified receipt and delivery points on the Company's pipeline system (transportation service) or can reserve a specific amount of storage capacity at specified injection and withdrawal points at the Company's storage facilities (storage service). The Company accounts for firm services as a single promise to stand ready each month of the contract term to provide the committed capacity for either transportation or storage services when needed by the customer, which represents a series of distinct monthly services that are substantially the same with the same pattern of transfer to the customer. Although several activities may be required to provide the firm service, the individual activities do not represent
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distinct performance obligations because all of the activities must be performed in combination in order for the Company to provide the firm service.

The transaction price for firm service contracts is comprised of a fixed fee based on the quantity of capacity reserved, regardless of use (capacity reservation fee), plus variable fees in the form of cash distributionsa usage fee paid on the volume of commodity actually transported or injected and withdrawn from storage. Both the fixed and usage fees are allocated to the general partnersingle performance obligation of providing transportation or storage service and recognized over time based upon the output measure of time as the holderCompany completes its stand-ready obligation to provide contracted capacity and the customer receives and consumes the benefit of IDRs.

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2014-09, Revenue from Contractsreserved capacity, which corresponds with Customers (Topic 606), (ASC 606) which will require entities to recognize revenue in an amount that reflects the transfer of promised goods orcontrol to the customer. The fixed fee is recognized ratably over the contract term, representative of the proportion of the committed stand-ready capacity obligation that has been fulfilled to date, and the usage fee is recognized upon satisfaction of each distinct monthly performance obligation, consistent with the allocation objective and based upon the level of effort required to satisfy the stand-ready obligation in a given month. Capacity reservation revenues derived from a firm service contract are generally consistent during the contract term, but can be higher in winter periods than the rest of the year based upon seasonal rates.

Interruptible Service Contracts: In providing interruptible services to customers, the Company agrees to transport or store natural gas or NGLs for a customer when capacity is available. The Company does not account for interruptible services with a customer as a contract until the customer nominates for service and the Company accepts the nomination based upon available pipeline or storage capacity or product availability because there are no enforceable rights and obligations until that time. The nomination and acceptance process is a daily activity and acceptance is granted based upon priority of service and availability of capacity and products. Upon acceptance, the Company accounts for interruptible services similarly to its firm services.

The transaction price for interruptible service contracts is comprised of a variable fee in an amountthe form of a usage fee paid on the volume of commodity actually transported or injected and withdrawn from storage. The transaction price is allocated to the single performance obligation of providing interruptible service. Interruptible service revenues for natural gas transportation and storage are generally recognized over time based on the output measure of volume transported or stored when services are rendered upon the successful allocation of the services provided to the customer's account, which best depicts the transfer of control to the customer and satisfaction of the promised service. Interruptible services are recognized in the month services are provided because the Company has a right to consideration from customers in amounts that correspond directly to the entity expectsvalue that the customer receives from the Company's performance. The rates charged may vary on a daily, monthly or seasonal basis.

Minimum Volume Commitment (MVC) Contracts: Certain of the Company's transportation, storage or ethane supply contracts require customers to be entitledtransport, store or purchase a minimum volume of commodity over a specified time period. If a customer fails to meet its MVC for the specified time period, the customer is obligated to pay a contractually-determined deficiency fee based upon the shortfall between the actual volumes transported, stored or purchased and the MVC for that period. MVC contracts are generally similar in exchangenature to a firm service contract where the performance obligation is a stand-ready obligation that is a series of distinct services that are substantially the same with the same pattern of transfer to the customer. The transaction price for those goodsa MVC is a fee for the volume of commodity actually transported, stored or services.delivered, which is allocated to each distinct monthly performance obligation, consistent with the allocation objective and based upon the level of effort required to satisfy the obligation of the transacted activities in a given month. Revenues associated with transportation and storage services are generally recognized over time based on the output measure of volume transported or stored and revenues associated with ethane supply are generally recognized at a point in time based on barrels delivered, with the recognition of the deficiency fee in the period when it is known the customer cannot make up the deficient volume in the specified period.
Other: ASC 606Certain ethane supply contracts include a stated volume that the Company supplies to customers, and any volume requested above the stated volume is based on product availability. Revenues for these ethane supply contracts are generally recognized at a point in time when each barrel is transferred to the customer because the customer is able to direct the use of, and obtain substantially all of the remaining benefits from, the product at that time. Periodically, the Company may also enter into contracts with customers for the sale of natural gas or NGLs. The Company recognizes revenues for these transactions at the point in time of the physical sale of the commodity, which corresponds with the transfer of control of the commodity to the customer and the consideration is measured as the stated sales price in the contract.

Contract Balances

The Company records contract assets primarily related to performance obligations completed but not billed, or partially billed, as of the reporting date. The Company records contract liabilities, or deferred revenue, when payment is received in advance of satisfying its performance obligations.
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Note 3: Acquisition

On September 29, 2023, Boardwalk Resources Company, LLC, a wholly owned subsidiary of the Company, acquired 100% of the equity interests of Williams Olefins Pipeline Holdco LLC (Bayou Ethane) from Williams Field Services Group, LLC for $355.0 million in cash, including working capital. Bayou Ethane owns an approximately 380-mile pipeline system that transports ethane from Mont Belvieu, Texas, to the Mississippi River corridor in Louisiana and two 15-mile pipelines in the Houston Ship Channel area that carry ammonia and hydrogen chloride. Bayou Ethane provides ethane supply and transportation services for industrial customers in Louisiana and Texas. In providing ethane supply services, Bayou Ethane purchases ethane at Mont Belvieu and various locations in Louisiana and utilizes its pipeline to deliver supply to its customers. The acquisition allows the Company to extend its assets, diversify its customer base and service offerings and to complement its existing NGLs operations. The purchase price was funded with available cash on hand.

The acquisition was accounted for as a business combination. The purchase price was allocated to the assets acquired and liabilities assumed based on their estimated fair values on the date of acquisition. The fair values for PPE, including rights-of-way, were determined primarily using a combination of the market and cost approaches. The fair values for the customer-based intangibles were determined using a discounted cash flow analysis with inputs not observable in the market, such as estimated future cash flows and weighted-average cost of capital rates, which were considered Level 3 fair value estimates. During the fourth quarter 2023, the purchase price allocation was finalized. The final fair values of the assets acquired and liabilities assumed as of September 29, 2023, the acquisition date, were as follows (in millions):

Current assets$51.8 
Property, plant and equipment296.2 
Customer-based intangibles (1)
33.9 
Noncurrent assets0.5 
Total assets acquired382.4
Current liabilities26.7 
Noncurrent liabilities0.7 
Total liabilities assumed27.4
Net assets acquired$355.0

(1) also requires disclosures regardingCustomer-based intangibles have a weighted-average useful life of 35 years and are recorded in Other Assets.

For the nature, amount, timingyear ended December 31, 2023, the acquisition contributed $101.5 million and uncertainty of$5.5 million to the Company's operating revenues and cash flowsnet income. The Company incurred an immaterial amount of acquisition costs related to the acquisition for the year ended December 31, 2023. Acquisition costs were expensed as incurred and are recorded in Administrative and general on the Consolidated Statements of Income.

Pro Forma Financial Information(unaudited)

The following unaudited pro forma results of operations are presented as if the acquisition occurred on January 1, 2022. Such results are not necessarily indicative of future results. These pro forma results also do not reflect any cost savings, operating synergies or revenue enhancements that the Company may achieve or the costs necessary to achieve those objectives (in millions):

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Pro Forma
For the Year Ended December 31,
20232022
Operating revenue (1)(2)
$1,962.8 $2,253.4 
Net income (2)
393.8 357.4 

(1)Bayou Ethane provides ethane supply services, which result in ethane sales and purchases being presented on a gross basis in the Consolidated Statements of Income.

(2)The average ethane price of $0.25 per gallon for the year ended December 31, 2023, was lower as compared to $0.48 per gallon for the comparable period for 2022, which resulted in higher revenues in the 2022 period.

The pro forma information was adjusted for the following items:

Revenues and operating costs were based on actual results for the periods indicated. Acquisition costs were not material and were excluded; and
Depreciation and amortization expense was calculated using PPE and intangible asset amounts as determined by the purchase price allocation and estimated useful lives.


Note 4: Revenues

The Company operates in one reportable segment. It contracts directly with end-use customers, including electric power generators, local distribution companies, industrial users and exporters of liquefied natural gas. The Company also contracts with other customers, including producers and marketers of natural gas and interstate and intrastate pipelines, who, in turn, provide transportation and storage services for end-users. The following table presents the Company's revenues disaggregated by type of service (in millions):
For the Year Ended December 31,
202320222021
Revenues from Contracts with Customers
Firm Service (1)(3)
$1,489.7 $1,311.9 $1,247.5 
Interruptible Service51.6 56.2 32.0 
Other revenues (3)
40.2 29.9 26.1 
Total Revenues from Contracts with Customers1,581.5 1,398.0 1,305.6 
Other operating revenues (2)(3)
36.2 34.0 34.5 
Total Operating Revenues$1,617.7 $1,432.0 $1,340.1 

(1)Revenues earned from contracts with MVCs are included in firm service given the stand-ready nature of the performance obligation and the guaranteed nature of the fees over the contract term.

(2)Other operating revenues include certain revenues earned from operating leases, pipeline management fees and other activities that are not considered central and ongoing major business operations of the Company and do not represent revenues earned from contracts with customers.
(3)Revenues attributable to Bayou Ethane were $74.9 million in firm service, $25.4 million in other revenues and $1.2 million in other operating revenues for the year ended December 31, 2023.

Contract Balances

As of December 31, 2023 and 2022, the Company had receivables recorded in Trade Receivables, net from contracts with customers of $204.6 million and $148.4 million, contract assets recorded in Other Assets from contracts with a customer of
52


$6.2 million and $3.3 million, and contract liabilities recorded in Other Current Liabilities (current portion) and Other Liabilities (noncurrent portion) from contracts with customers of $21.4 million and $23.0 million.

As of December 31, 2023, contract liabilities are expected to be recognized through 2040. Significant changes in the contract liability balances during the year ended December 31, 2023, were as follows (in millions):

Contract Liabilities
Balance as of December 31, 2022(1)
$23.0 
Revenues recognized that were included in the contract liability
    balances at the beginning of the period
(3.9)
Increases due to cash received, excluding amounts recognized as
    revenues during the period
1.8
Other0.5
Balance as of December 31, 2023(1)
$21.4
(1)As of December 31, 2023 and 2022, $3.5 million and $3.6 million were recorded in Other Current Liabilities (current portion), and $17.9 million and $19.4 million were recorded in Other Liabilities (noncurrent portion).

Significant changes in the contract liability balances during the year ended December 31, 2022, were as follows (in millions):

Contract Liabilities
Balance as of December 31, 2021(1)
$19.2 
Revenues recognized that were included in the contract liability
    balances at the beginning of the period
(5.1)
Increases due to cash received, excluding amounts recognized as
    revenues during the period
8.9 
Balance as of December 31, 2022(1)
$23.0 
(1)As of December 31, 2022 and 2021, $3.6 million was recorded in Other Current Liabilities (current portion) and $19.4 million and $15.6 million were recorded in Other Liabilities (noncurrent portion).

Performance Obligations

The Partnership implemented ASC 606 effective January 1, 2018, applying ASC 606following table includes estimated operating revenues expected to customer contracts whichbe recognized in the future related to agreements that contain performance obligations that were not completedunsatisfied as of December 31, 2023. The amounts presented primarily consist of fixed fees or MVCs which are typically recognized over time as the effective date, onperformance obligation is satisfied, in accordance with firm service contracts or guaranteed minimum fees associated with the performance obligation that are satisfied at a modified retrospective basis,point in time under certain ethane supply contracts. For the Company's customers that are charged maximum tariff rates related to its FERC-regulated operating subsidiaries, the amounts below reflect the current tariff rate for such services for the term of the agreements; however, the tariff rates may be subject to future adjustment. The Company has elected to exclude the following from the table: (a) unsatisfied performance obligations from usage fees associated with its firm services because of the variable nature of such services; (b) unsatisfied performance obligations from the ethane commodity indexed portion of the ethane supply contracts because of the variable nature of ethane prices, and (c) consideration in contracts that is recognized in revenue as invoiced, such as for interruptible services. The estimated revenues reflected in the table may include estimated revenues that are anticipated under executed precedent transportation agreements for projects that are subject to regulatory approvals.
53


In millions
20242025ThereafterTotal
Estimated revenues from contracts with customers
    from unsatisfied performance obligations as of
    December 31, 2023
$1,362.0 $1,250.0 $6,840.5 $9,452.5 
Operating revenues which are fixed and
    determinable (operating leases)
28.0 27.5 163.5 219.0 
Total projected operating revenues under committed
    firm agreements as of December 31, 2023
$1,390.0 $1,277.5 $7,004.0 $9,671.5 


Note 5:Leases

The Company has various operating lease commitments extending through 2058, generally covering office space and equipment rentals, some of which contain options to renew or extend the lease term. The Company also has a cumulative reduction to partners' capital of $12.8 million. The adjustment to partners' capital as of January 1, 2018, resulted from two items: (i) contracts which had changesfinance lease related to the rates during the service periodlease of an office building in Owensboro, Kentucky, entered into in 2013, that has a fifteen-year term with two twenty-year renewal options.

The components of lease cost were chargedas follows (in millions):

For the Year Ended December 31,
202320222021
Operating lease cost$3.8 $3.8 $4.0 
Short-term lease cost4.7 3.1 2.9 
Finance lease cost:
      Amortization of right-of-use asset0.7 0.7 0.7 
      Interest on lease liability0.3 0.3 0.4 
        Total lease cost$9.5 $7.9 $8.0 

The following provides supplemental balance sheet information related to the customer without corresponding changes in service levels that were being provided byCompany's leases:
As of December 31,
20232022
Right-of-use assets (in millions)
Operating leases (recorded in Other Assets)
$18.9$18.7
Finance lease (recorded in Property, Plant and Equipment)
3.24.0
Lease liabilities (in millions)
Operating leases (recorded in Other Liabilities, current and
    non-current)
19.620.6
Finance lease (recorded in Other Current Liabilities and
    Long-term debt and finance lease obligation)
4.55.4
Weighted-average remaining lease term (years)
Operating leases9.910.4
Finance lease4.65.6
Weighted-average discount rate
Operating leases3.20 %2.86 %
Finance lease5.89 %5.89 %

54


The table below presents the Partnership, and (ii) the de-recognition of gas stored underground available for sale from customers who elected to have fuel retained in-kind because under ASC 606, retained fuel is not considered additional consideration included in the transaction price.

In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases (Topic 842) (ASU 2016-02), which will require, among other things, the recognitionmaturities of lease assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. The amendments are to be applied at the beginning of the earliest period presented using a modified retrospective approach. ASU 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018, however, early adoption is permitted. The Partnership has initiated a project to evaluate the impact that ASU 2016-02 will have on its financial statements when implemented, however, no conclusions have been reached.(in millions):
As of December 31, 2023
Operating
Leases
Finance
Lease
2024$3.7 $1.1 
20252.6 1.1 
20261.9 1.1 
20271.3 1.1 
20280.3 0.7 
Thereafter13.3 — 
Total23.1 5.1 
Less: discount(3.5)(0.6)
Total lease liabilities$19.6 $4.5 



Note 3: Asset Disposition and Impairments

On May 9, 2017, the Partnership sold its Flag City Processing Partners, LLC subsidiary, which owned the Flag City processing plant and related assets, to a third party for $63.6 million, including customary adjustments. The Partnership recognized losses and impairment charges, reported within Total operating costs and expenses, of $47.1 million on the sale.



55



Note 4:6: Commitments and Contingencies

Legal Proceedings and Settlements

The Partnership'sCompany and its subsidiaries are parties to various legal actions arising in the normal course of business. Management believes the disposition of these outstanding legal actions, including the legal actions identified below, will not have a material impact on the Partnership'sCompany's financial condition, results of operations or cash flows.

Southeast Louisiana Flood ProtectionMishal and Berger Litigation

On May 25, 2018, plaintiffs Tsemach Mishal and Paul Berger (on behalf of themselves and the purported class, Plaintiffs) initiated a purported class action in the Court of Chancery of the State of Delaware (the Trial Court) against the following defendants: the Company, Boardwalk GP, LP (Boardwalk GP), Boardwalk GP, LLC and BPHC (together, Defendants), regarding the potential exercise by Boardwalk GP of its right to purchase the issued and outstanding common units of the Company not already owned by Boardwalk GP or its affiliates (Purchase Right).

On June 25, 2018, Plaintiffs and Defendants entered into a Stipulation and Agreement of Compromise and Settlement, subject to the approval of the Trial Court (the Proposed Settlement). Under the terms of the Proposed Settlement, the lawsuit would be dismissed, and related claims against the Defendants would be released by the Plaintiffs, if BPHC, the sole member of the general partner of Boardwalk GP, elected to cause Boardwalk GP to exercise its Purchase Right for a cash purchase price, as determined by the Company's Third Amended and Restated Agreement of Limited Partnership, as amended (the Limited Partnership Agreement), and gave notice of such election as provided in the Limited Partnership Agreement within a period specified by the Proposed Settlement. On June 29, 2018, Boardwalk GP elected to exercise the Purchase Right and gave notice within the period specified by the Proposed Settlement. On July 18, 2018, Boardwalk GP completed the purchase of the Company's common units pursuant to the Purchase Right.

On September 28, 2018, the Trial Court denied approval of the Proposed Settlement. On February 11, 2019, a substitute verified class action complaint was filed in this proceeding, which, among other things, added Loews as a Defendant. The Defendants filed a motion to dismiss, which was heard by the Trial Court in July 2019. In October 2019, the Trial Court ruled on the motion and granted a partial dismissal, with certain aspects of the case proceeding to trial. A trial was held the week of February 22, 2021, and post-trial oral arguments were held on July 14, 2021.

On November 12, 2021, the Trial Court issued a ruling in the case. The Trial Court held that Boardwalk GP breached the Limited Partnership Agreement and found that Boardwalk GP is liable to the Plaintiffs for approximately $690.0 million in damages, plus pre-judgment interest (approximately $166.0 million), post-judgment interest and attorneys' fees. The Trial Court's ruling and damages award was against Boardwalk GP, and not the Company or its subsidiaries.

The PartnershipDefendants believed that the Trial Court ruling included factual and its subsidiary, legal errors. Therefore, on January 3, 2022, the Defendants appealed the Trial Court's ruling to the Supreme Court of the State of Delaware (the Supreme Court). On January 17, 2022, the Plaintiffs filed a cross-appeal to the Supreme Court contesting the calculation of damages by the Trial Court. Oral arguments were held on September 14, 2022, and on December 19, 2022, the Supreme Court reversed the Trial
55


Court's ruling and remanded the case to the Trial Court for further proceedings related to claims not decided by the Trial Court's ruling. Briefing by the parties at the Trial Court on the remanded issues was completed in September 2023. A hearing on the remanded issues is scheduled at the Trial Court in April 2024.

City of New Orleans Litigation

Gulf South, along with approximately 100several other energy companies operating in Southern Louisiana, havehas been named as defendantsa defendant in a petition for damages and injunctive relief in state district court for Orleans Parish, Louisiana, (Case No. 13-6911)19-3466) by the BoardCity of Commissioners of the Southeast Louisiana Flood Protection Authority - East (Flood Protection Authority).New Orleans. The case was filed in state court, but was removed to the U.S. District Court for the Eastern District of New Orleans (Court) in August 2013.on March 29, 2019. The lawsuit claims includedinclude, among other things, negligence, strict liability, public nuisance private nuisance,and breach of contract, and breach of the natural servitude of drain against the defendants, alleging that the defendants’defendants' drilling, dredging, pipeline and industrial operations since the 1930s have caused increased storm surge risk, increased flood protection costs and unspecified damages to the Flood Protection Authority.City of New Orleans. In addition to attorney fees and unspecified monetary damages,October 2020, this case was stayed pending the lawsuit sought abatement and restorationoutcome of the coastal lands, including backfilling and revegetating of canals dredged and used by the defendants, and abatement and restoration activities such as wetlands creation, reef creation, land bridge construction, hydrologic restoration, shoreline protection, structural protection, bank stabilization and ridge restoration. On February 13, 2015, the Court dismissed the case with prejudice. The Flood Protection Authority appealed the dismissal of the casea consolidated appeal to the U.S.Fifth Circuit Court of Appeals forin a similar case. On August 5, 2021, the Fifth Circuit in May 2015 (Case No. 15-CV-30162). On March 3, 2017, the U.S. Court of Appeals forruled in favor of the oil-and-gas defendants in that consolidated appeal, finding that the two cases being appealed should be re-examined in federal district court since they involve operations that were federally overseen at the time. The ruling reverses a previous decision that allowed the cases to be heard in state court, which the plaintiffs had sought. As a result of the Fifth Circuit upheldCourt of Appeals' decision, it is anticipated that this case will be reviewed in federal district court to determine whether the Court’s dismissal. On April 12, 2017,case should be heard in that court.

Gulf South and Texas Gas have been named as defendants in several suits in the Fifth Circuit deniedState of Louisiana that are similar in nature to the Flood Protection Authorities' Petition for Rehearing En Banc. On July 11, 2017, the plaintiffsCity of New Orleans Litigation discussed above. These cases were filed a writ of certiorari with the United States Supreme Courtin Louisiana state courts and are advancing to review the case. On October 30, 2017, the United States Supreme Court denied a rehearing of the case.

Settlements and Insurance Proceeds

discovery.
For the year ended December 31, 2016, the Partnership received $12.7 million in cash from the settlement of a legal claim which was recorded in
Transportation revenues.

For the year ended December 31, 2015, the Partnership received $8.8 million in insurance proceeds from a business interruption claim related to Louisiana Midstream, which was recorded in Transportation revenues.

Environmental and Safety Matters

The Company's operating subsidiaries are subject to federal, state, and local environmental laws and regulations in connection with the operation and remediation of various operating sites. As of December 31, 20172023 and 2016,2022, the PartnershipCompany had an accrued liability of approximately $5.0$10.1 million and $3.0 million related to assessment and/or remediation costs associated with the historical use of polychlorinated biphenyls, petroleum hydrocarbons and mercury. The liability represents management’smanagement's estimate of the undiscounted future obligations based on evaluations and discussions with counsel and operating personnel and the current known facts and circumstances related to these matters. The related expenditures are expected to occur over the next fourthirty years. As of December 31, 20172023 and 2022, approximately $6.7 million and $1.3 million were recorded in Other Current Liabilities and 2016, approximately $1.2$3.4 million and $1.7 million were recorded in Other current liabilities and approximately $3.8 million and $3.3 million were recorded in Other Liabilities and Deferred Credits.

Clean Air Act and Climate Change

The Partnership’sCompany's pipelines and associated facilities are subject to the federal Clean Air Act as amended, (CAA) and comparable state laws and regulations, which regulate the emission of air pollutants from many sources and impose various compliance monitoring and reporting requirements. Under the CAA, the PartnershipCompany may be required to obtain pre-approval for the construction or modification of certain projects or facilities expected to produce or significantly increase air emissions, obtain and strictly comply with stringent air permit requirements or utilize specific equipment or technologies to control emissions. The need to obtain permits has the potential to delay the development or expansion of the Partnership’sCompany's projects. Over the next several years, the PartnershipCompany may be required to incur certain capital expenditures for air pollution control equipment or other air emissions related issues. For example, in 2015, the Environmental Protection Agency (EPA) issued a final rule under the CAA, lowering the National Ambient Air Quality Standard (NAAQS) for ground-level ozone to 70 parts per billion under both the primary and secondary standards to provide requisite protection of public health and welfare, respectively. TheSince that time, the EPA published a final rule in November 2017 that issued area designations of either “attainment/unclassifiable” or “unclassifiable” with respect to ground-level


ozone, issued final requirements that apply to state, local and tribal air agencies for approximately 85%implementing the 2015 NAAQS for ground-level ozone and, on December 31, 2020, published notice of a final action to retain the 2015 ozone NAAQS without revision on a going-forward basis. However, several groups filed litigation over the December 2020 final action and in October 2021, the EPA announced that it would reconsider the December 2020 determination to maintain the November 2015 NAAQS. In August 2023, the EPA announced a new review of the U.S. countiesozone NAAQS to ensure the standards protect people’s health and reflect the most current, relevant science. The new review will incorporate the reconsideration of the December 2020 final action. Until a final decision following the review is expected to issue final non-attainment area requirements pursuant to this NAAQS rule byreleased, the second quarter 2018.full extent of the impacts of any new standards are not clear. States are also expected to implement more stringent regulations that could apply to the Partnership'sCompany's operations. Compliance with thisany final ruledecision could, among other things, require installation orof new emission controls on some of the Partnership'sCompany's equipment, result in longer permitting timelines and significantly increase its capital expenditures and operating costs. Additionally, the threat of climate change continues to attract considerable public, governmental and scientific attention. As a result, numerous proposals have been made and are likely to continue to be made at
56


the international, national, regional, state and local levels of government to monitor and limit emissions of greenhouse gases (GHGs). These efforts have included consideration of cap-and-trade programs, carbon taxes, and GHG reporting and tracking programs, and regulations that directly limit GHG emissions from certain sources. The EPA has determined that greenhouse gas (GHG)GHG emissions endanger public health and the environment because emissions of such gases are potentially contributing to warming of the earth’s atmosphere and, other climatic changes. Based on these findings, the EPAas a result, has adopted regulations under the CAA related to GHG emissions. Additionally, many states have adopted regulations related to GHG emissions.

Lease Commitments
The Partnership has various operating lease commitments extending through the year 2028 generally covering office space and equipment rentals. Total lease expense for the years ended December 31, 2017, 2016 and 2015, was approximately $13.8 million, $13.2 million and $12.2 million. The following table summarizes minimum future commitments related to these items at December 31, 2017 (in millions):
2018$4.3
20194.3
20204.2
20214.0
20224.0
Thereafter5.6
Total$26.4



Commitments for Construction

The Partnership’sCompany's future capital commitments are comprised of binding commitments under purchase orders for materials ordered but not received and firm commitments under binding construction service agreements. The commitments asAs of December 31, 2017,2023, the commitments were approximately $171.2$134.2 million, all of which are expected to be settled within the next twelve months.

Pipeline Capacity and Storage Agreements

The Partnership’sCompany's operating subsidiaries have entered into pipeline capacity and storage agreements with third-party pipelines that allow the operating subsidiaries to transport gas to off-system markets on behalf of customers.customers or store natural gas. Additionally, in connection with the Bayou Ethane acquisition, the Company has assumed a pipeline capacity agreement with a third party to facilitate the transportation of ethane and an ethane storage agreement. The PartnershipCompany incurred expenses of $6.2$5.8 million, $6.5$3.2 million and $6.9$7.7 million related to pipeline capacity and storage agreements for the years ended December 31, 2017, 20162023, 2022 and 2015.2021. The table below presents the future commitments related to pipeline capacitythese agreements as of December 31, 2017, were2023 (in millions):
2018$6.3
20195.5
20202.9
20211.7
20221.3
Thereafter
Total$17.7




57



2024$7.9 
20258.0 
20268.0 
20273.2 
20280.1 
Thereafter— 
Total$27.2 


Note 5: Other Comprehensive Income and7: Fair Value Measurements

Other Comprehensive Income

The Partnership estimates that approximately $2.8 million of net losses reported in AOCI as of
December 31, 2017, are expected to be reclassified into earnings within the next twelve months. This amount is comprised of a $1.6 million decrease to earnings related to net periodic benefit cost and a $1.2 million decrease to earnings related to cash flow hedges. The amounts related to cash flow hedges are from treasury rate locks used in hedging interest payments associated with debt offerings that were settled in previous periods and are being amortized to earnings over the terms of the related interest payments, generally the terms of the related debt. The following table shows the components and reclassifications to net income of Accumulated other comprehensive loss which is included in Partners' Capital for the years ended December 31, 2015 through 2017 (in millions):    
 Cash Flow Hedges Pension and Other Postretirement Costs Total
Beginning balance, January 1, 2015$(10.8) $(62.0) $(72.8)
Reclassifications: Interest expense (1)
2.4
 
 2.4
Pension and other postretirement benefit costs
 (13.9) (13.9)
Ending balance, December 31, 2015$(8.4) $(75.9) $(84.3)
Reclassifications: Interest expense (1)
2.4
 
 2.4
Pension and other postretirement benefit costs
 1.8
 1.8
Ending balance, December 31, 2016$(6.0) $(74.1) $(80.1)
Loss recorded in AOCI(1.5) 
 (1.5)
Reclassifications: Interest expense (1)
2.5
 
 2.5
Pension and other postretirement benefit costs
 (1.9) (1.9)
Ending balance, December 31, 2017$(5.0) $(76.0) $(81.0)

(1)Related to amounts deferred in AOCI from the treasury rate locks described above.

Financial Assets and Liabilities

As of December 31, 2017 and 2016, the PartnershipThe Company had no assets and liabilities which wereequity securities recorded at fair value on a recurring basis. basis in Other Current Assets of $2.3 million and $3.0 million as of December 31, 2023 and 2022. The equity securities were received as part of a settlement of a bankruptcy claim. The equity securities were valued based on quoted market prices at December 31, 2023 and 2022, and were considered Level 1 investments. The Company had no liabilities recorded at fair value on a recurring basis as of December 31, 2023 and 2022.

Financial Assets and Liabilities Not Measured at Fair Value

The following methods and assumptions were used in estimating the fair value amounts included in the disclosures for financial assets and liabilities:

Cash and Cash Equivalents: For cash and short-term financial assets, the carrying amount is a reasonable estimate of fair value due to the short maturity of those instruments.

Long-Term Debt: The estimated fair value of the Partnership'sCompany's publicly traded debt is based on quoted market prices at December 31, 20172023 and 2016.2022. The fair market value of the debt that is not publicly traded is based on market prices of similar debt at December 31, 20172023 and 2016.2022. The carrying amount of the Partnership'sCompany's variable-rate debt approximatesat December 31, 2023, approximated fair value because the instruments bear a floating market-based interest rate.

57


    
The carrying amounts and estimated fair values of the Partnership'sCompany's financial assets and liabilities which were not recorded at fair value on the Consolidated Balance Sheets as of December 31, 20172023 and 2016,2022, were as follows (in millions):

As of December 31, 2017   Estimated Fair Value
Financial Assets Carrying Amount Level 1 Level 2 Level 3 Total
Cash and cash equivalents $17.6
 $17.6
 $
 $
 $17.6
           
Financial Liabilities               
Long-term debt $3,687.5
(1) 
$
 $3,889.4
 $
 $3,889.4
As of December 31, 2023 Estimated Fair Value
Financial AssetsCarrying AmountLevel 1Level 2Level 3Total
   Cash and cash equivalents$20.1 $20.1 $ $ $20.1 
Financial Liabilities     
   Long-term debt$3,262.4 (1)$ $3,155.3 $ $3,155.3 

(1) The carrying amount of long-term debt excludes an $8.1excluded a $3.6 million long-term capitalfinance lease obligation and
$8.84.1 million of unamortized debt issuance costs.

As of December 31, 2022Estimated Fair Value
Financial AssetsCarrying AmountLevel 1Level 2Level 3Total
   Cash and cash equivalents$215.6 $215.6 $— $— $215.6 
Financial Liabilities 
   Long-term debt$3,234.0 (1)$— $3,041.4 $— $3,041.4 
As of December 31, 2016   Estimated Fair Value
Financial Assets Carrying Amount Level 1 Level 2 Level 3 Total
Cash and cash equivalents $4.6
 $4.6
 $
 $
 $4.6
           
Financial Liabilities           
Long-term debt $3,558.9
(1) 
$
 $3,709.2
 $
 $3,709.2

(1) The carrying amount of long-term debt excludes an $8.6excluded a $4.5 million long-term capitalfinance lease obligation and
$9.55.1 million of unamortized debt issuance costs.


59
58




Note 6: 8: Property, Plant and Equipment


The following table presents the Partnership’sCompany's PPE as of December 31, 20172023 and 20162022 (in millions):
Category 2017
Amount
 
Weighted-Average
Useful Lives
(Years)
 2016
Amount
 
Weighted-Average
Useful Lives
 (Years)
Depreciable plant:        
Transmission $9,115.4
 38 $8,337.1
 38
Storage 776.7
 38 779.2
 38
Gathering 109.2
 23 385.2
 28
General 196.7
 13 194.2
 13
Rights of way and other 127.6
 36 125.7
 36
Total utility depreciable plant 10,325.6
 37 9,821.4
 37
         
Non-depreciable:  
 
  
  
Construction work in progress 416.5
   368.5
  
Storage 105.5
   105.5
  
Land 36.0
   31.9
  
Total non-depreciable assets 558.0
   505.9
  
         
Total PPE 10,883.6
   10,327.3
  
Less:  accumulated depreciation 2,621.1
   2,333.8
  
         
Total PPE, net $8,262.5
   $7,993.5
  

Category2023
Amount
2023
Weighted-Average
Useful Lives
(Years)
2022
Amount
2022
Weighted-Average
Useful Lives
 (Years)
Depreciable plant:    
Transmission$11,405.4 38$10,913.0 38
Storage951.3 39921.9 38
Gathering106.1 24111.1 24
General, intangibles and other535.4 20473.0 21
Total utility depreciable plant12,998.2 3712,419.0 37
Non-depreciable:   
Construction work in progress287.2  187.6  
Storage197.5  151.6  
Land46.6  46.1  
Total non-depreciable assets531.3  385.3  
Total PPE, gross13,529.5  12,804.3  
Less:  accumulated depreciation and amortization4,672.9  4,288.3  
Total PPE, net$8,856.6  $8,516.0  
 
The non-depreciable assets were not included in the calculation of the weighted-average useful lives. 
    
For the years ended December 31, 2023, 2022 and 2021, depreciation expense for PPE was $406.5 million, $390.4 million and $364.4 million and was recorded in Depreciation and amortization on the Consolidated Statements of Income.

The PartnershipCompany holds undivided interests in certain assets, including the Bistineau storage facility of which the Partnership owns 92%, the Mobile Bay Pipeline, of which the PartnershipCompany owns 64%, and offshore and other assets, comprised of pipeline and gathering assets in which the PartnershipCompany holds various ownership interests. In addition, the PartnershipCompany owns 83% of two ethylene wells and supporting surface facilities in Choctaw, Louisiana, and certain ethylene and propylene pipelines connecting Louisiana Midstream’sMidstream's storage facilities in Choctaw to chemical manufacturing plants in Geismar, Louisiana.

The proportionate share of investment associated with these interests has been recorded as PPE on the balance sheets.Consolidated Balance Sheets. The PartnershipCompany records its portion of direct operating expenses associated with the assets in Operation and maintenance expense. expense. The following table presents the gross PPE investment and related accumulated depreciation for the Partnership’sCompany's undivided interests as of December 31, 20172023 and 20162022 (in millions):
 2017 2016
 
Gross PPE
Investment
 Accumulated Depreciation 
Gross PPE
Investment
 Accumulated Depreciation
Bistineau storage$75.5
 $24.0
 $73.6
 $21.8
Mobile Bay Pipeline13.2
 5.8
 13.3
 5.4
NGL pipelines and facilities34.8
 5.2
 34.8
 4.2
Offshore and other assets16.2
 12.7
 15.1
 11.8
Total$139.7
 $47.7
 $136.8
 $43.2


 20232022
 Gross PPE
Investment
Accumulated DepreciationGross PPE
Investment
Accumulated Depreciation
Mobile Bay Pipeline$15.4 $8.3 $15.4 $7.9 
NGLs pipelines and facilities54.6 13.5 54.4 12.0 
Offshore and other assets13.0 10.9 13.0 10.6 
Total$83.0 $32.7 $82.8 $30.5 


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Asset Impairment ChargesImpairments

The PartnershipCompany recognized $5.8 million, $3.8 million and $0.4 million of asset impairment charges of $0.4 million and $7.5 million for the years ended December 31, 2017, 20162023 and 2015. A portion of the2022, and immaterial asset impairment charges for the year ended December 31, 2021. The charges recorded in 2017 were related to the sale of the Flag City processing plant and related assets, a portion of the charges in 2017 and the charges in 2016 were primarily due to materials and supplies inventory that were determined to be obsolete and the remainder of the charges in 2017 and the charges in 20152022 were primarily due to an increase in the estimate of AROexisting AROs related to assets havingretired assets.

Base Gas Reclassification

In September 2022, Gulf South, a wholly owned subsidiary of the Company, submitted an application with the FERC seeking authorization to reclassify 13.5 billion cubic feet of working gas as additional base gas. The reclassification was necessary to reflect changing operational needs and was supported, among other things, by an operational study of certain storage assets. In the first quarter 2023, the FERC comment period closed with no protests. As of March 31, 2023, as a result of the operational need for the base gas, Gulf South reclassified the carrying amount.


amount of approximately $47.8 million of natural gas to Property, Plant and Equipment, of which $40.9 million had been recorded in Gas Stored Underground within Current Assets, and $6.9 million had been recorded in Gas Stored Underground within Other Assets. The application was approved by the FERC in April 2023.


Note 7: 9: Goodwill and Intangible Assets

Goodwill

As of December 31, 20172023 and 2016,2022, the PartnershipCompany had recorded in itson the Consolidated Balance Sheets $237.4 million of goodwill.

The PartnershipCompany performed its annual goodwill impairment test for its tworeporting units asas of November 30, 2017.2023 and 2022. The results of the quantitative goodwill impairment test indicated that the fair value of the Partnership’sCompany's reporting units significantly exceeded their carrying amounts. The fair value measurement of the reporting units was derived based on judgments and assumptions the Company believes market participants would use in assessing the fair value of the reporting units. These judgments and assumptions included the valuation premise, use of a discounted cash flow model to estimate fair value under an income approach and inputs to the valuation model. The inputs included the Company's five-year financial plan operating results, including operating revenues, the long-term outlook for growth in natural gas and NGLs demand, measures of the risk-free rate, equity premium and systematic risk used in the calculation of the applied discount rate under the capital asset pricing model and views regarding future market conditions, among others. The reasonableness of fair value estimates under the income approach were supported by a market approach under which the Company applied earnings before interest, income taxes, depreciation and amortization (EBITDA) multiples derived from publicly-available information to each reporting unit's EBITDA.

No impairment chargecharges related to goodwill waswere recorded for any of the Partnership’sCompany's reporting units during 2017, 20162023, 2022 or 2015.2021.

Intangible Assets

The following table contains information regarding the Partnership'sCompany's intangible assets, which includes customer relationships acquired as part of its acquisitions (in millions):
As of December 31,
20232022
Gross carrying amount (1)
$93.3 $59.4 
Accumulated amortization(21.3)(19.1)
Net carrying amount$72.0 $40.3 
 December 31,
 2017 2016
Gross carrying amount$59.4
 $59.4
Accumulated amortization(9.5) (7.5)
Net carrying amount$49.9
 $51.9
    

(1)The increase in the gross carrying amount during the year ended December 31, 2023, is the result of the Bayou Ethane acquisition as discussed in Note 3.
60



For the year ended December 31, 2023, amortization expense for intangible assets was $2.2 million and was $1.9 million for each of the years ended December 31, 2017, 20162022 and 2015, amortization expense for intangible assets was $2.0 million2021, and was recorded in Depreciation and amortization on the Consolidated Statements of Income. Amortization expense for the next five years and in total thereafter as of December 31, 2017,2023, is expected to be as follows (in millions):
2018$2.0
20192.0
20201.9
20211.9
20221.9
Thereafter40.2
Total$49.9

2024$2.9 
20253.0 
20262.9 
20272.9 
20282.9 
Thereafter57.4 
Total$72.0 

The weighted-average remaining useful life of the Partnership'sCompany's intangible assets as of December 31, 2017,2023, was 2625 years.



Note 8:  10: Asset Retirement Obligations

The PartnershipCompany has identified and recorded legal obligations associated with the abandonment of certain pipeline and storage assets, brine ponds, offshore facilities and the abatement of asbestos, consisting of removal, transportation and disposal when removed from certain compressor stations and meter station buildings. Legal obligations exist for the main pipeline and certain other PartnershipCompany assets; however, the fair value of thethese obligations cannot be determined because the lives of the assets are indefinite, thereforeindefinite. As a result, cash flows associated with retirement of the assets cannot be estimated with the degree of accuracy necessary to establish a liability for the obligations.



The following table summarizes the aggregate carrying amount of the Partnership’sCompany's ARO as of December 31, 2017 and 2016 (in millions):
As of December 31,
 20232022
Balance at beginning of year $71.1 $64.9 
Liabilities recorded8.4 1.8 
Liabilities settled(10.0)(6.3)
Accretion expense2.1 2.3 
Revision of estimates2.5 8.4 
Balance at end of year74.1 71.1 
Less:  Current portion of ARO(14.9)(17.2)
Long-term ARO$59.2 $53.9 
 2017 2016
Balance at beginning of year $51.9
 $52.6
Liabilities recorded5.3
 3.3
Liabilities settled(3.7) (5.7)
Accretion expense1.6
 1.7
Balance at end of year55.1
 51.9
Less:  Current portion of ARO(9.1) (7.2)
Long-term ARO$46.0
 $44.7


For the Partnership’sCompany's operations where regulatory accounting is applicable, depreciation rates for PPE are comprised of two components. One component is based on economic service life (capital recovery) and the other is based on estimated costs of removal (as a component of negative salvage) which is collected in rates and does not represent an existing legal obligation. The PartnershipCompany has reflected $65.8$98.1 million and $63.7$93.2 million as of December 31, 20172023 and 2016, in2022, on the accompanying Consolidated Balance Sheets as Provision for other asset retirement related to the estimated cost of removal collected in rates.



61


Note 9: 11: Regulatory Assets and Liabilities

The amounts recorded as regulatory assets and liabilities inon the Consolidated Balance Sheets as of December 31, 20172023 and 2016,2022, are summarized in the table below. The table also includes amounts related to unamortized debt expenseissuance costs and unamortized discount on long-term debt, which while not regulatory assets and liabilities, are a critical component of the embedded cost of debt financing utilized in Texas Gas' rate proceedings. The tax effect of the equity component of AFUDC represents amounts recoverable from rate payers for the tax recorded in regulatory accounting. Certain amounts in the table are reflected as a negative, or a reduction, to be consistent with the regulatory books of account. The period of recovery for the regulatory assets included in rates varies from one to eighteen years. The remaining period of recovery for regulatory assets not yet included in rates would be determined in future rate proceedings. None of the regulatory assets shown below were earning a return as of December 31, 20172023 and 20162022 (in millions):
As of December 31,
 20232022
Regulatory Assets:  
Pension$8.1 $8.1 
Tax effect of AFUDC equity0.1 0.1 
Other0.5 0.5 
Total regulatory assets$8.7 $8.7 
 2017 2016
Regulatory Assets:   
Pension$10.6
 $10.6
Tax effect of AFUDC equity2.3
 2.7
Total regulatory assets$12.9
 $13.3
Regulatory Liabilities:
Cashout and fuel tracker$15.1 $55.1 
Provision for other asset retirement98.1 93.2 
Unamortized debt issuance costs(1.0)(1.2)
Unamortized discount on long-term debt(0.1)(0.1)
Postretirement benefits other than pension60.6 59.0 
Total regulatory liabilities$172.7 $206.0 


Regulatory Liabilities:   
Cashout and fuel tracker$0.4
 $10.1
Provision for other asset retirement65.8
 63.7
Unamortized debt expense and premium on reacquired debt(5.6) (6.8)
Unamortized discount on long-term debt(0.8) (1.0)
Postretirement benefits other than pension48.9
 45.9
Total regulatory liabilities$108.7
 $111.9
62





62




Note 12: Financing
Note 10:  
Financing

Long-Term Debt

The following table presents all long-term debt issuesissuances outstanding as of December 31, 20172023 and 20162022 (in millions):
 20232022
Notes and Debentures:  
Boardwalk Pipelines  
4.95% Notes due 2024 (Boardwalk Pipelines 2024 Notes)$600.0 $600.0 
5.95% Notes due 2026550.0 550.0 
4.45% Notes due 2027500.0 500.0 
4.80% Notes due 2029500.0 500.0 
3.40% Notes due 2031500.0 500.0 
3.60% Notes due 2032500.0 500.0 
Texas Gas  
7.25% Debentures due 2027100.0 100.0 
Total notes and debentures3,250.0 3,250.0 
Revolving Credit Facility:  
Boardwalk Pipelines25.0 — 
Total revolving credit facility25.0 — 
Finance lease obligation3.6 4.5 
 3,278.6 3,254.5 
Less:
Unamortized debt discount(12.6)(16.0)
Unamortized debt issuance costs(4.1)(5.1)
Total Long-Term Debt and Finance Lease Obligation$3,261.9 $3,233.4 
 2017 2016
Notes and Debentures:   
Boardwalk Pipelines   
5.50% Notes due 2017 (Boardwalk Pipelines 2017 Notes)$
 $300.0
5.20% Notes due 2018185.0
 185.0
5.75% Notes due 2019350.0
 350.0
3.375% Notes due 2023300.0
 300.0
4.95% Notes due 2024600.0
 600.0
5.95% Notes due 2026550.0
 550.0
4.45% Notes due 2027500.0
 
    
Gulf South 
  
6.30% Notes due 2017 (Gulf South 2017 Notes)
 275.0
4.00% Notes due 2022300.0
 300.0
    
Texas Gas 
  
4.50% Notes due 2021440.0
 440.0
7.25% Debentures due 2027100.0
 100.0
Total notes and debentures3,325.0
 3,400.0
    
Revolving Credit Facility: 
  
Gulf Crossing285.0
 180.0
Gulf South100.0
 
Total revolving credit facility385.0
 180.0
    
Capital lease obligation8.1
 8.6
 3,718.1
 3,588.6
Less:   
Unamortized debt discount(22.5) (21.1)
Unamortized debt issuance costs(8.8) (9.5)
Total Long-Term Debt and Capital Lease Obligation$3,686.8
 $3,558.0

Maturities of the Partnership’sCompany's long-term debt for the next five years and in total thereafter are as follows (in millions):
 
2024$600.0 
2025— 
2026550.0 
2027600.0 
202825.0 
Thereafter1,500.0 
Total long-term debt$3,275.0 
2018$185.0
2019350.0
2020
2021440.0
2022685.0
Thereafter2,050.0
Total long-term debt$3,710.0



The PartnershipCompany has included $185.0 million of debtthe Boardwalk Pipelines 2024 Notes which maturesmature in less than one year as long-term debt on its Consolidated Balance Sheets as of December 31, 2017.2023. The PartnershipCompany has the intent and the ability to refinance the notes near or at their maturity through the available capital resources including borrowing capacity under itsthe revolving credit facility as of December 31, 2017, and expects to retire the notes at their maturity.or issuing debt securities.

63


Notes and Debentures

As of December 31, 20172023 and 2016,2022, the weighted-average interest rate of the Partnership'sCompany's notes and debentures was 5.18% and 5.46%4.84%. For the years ended December 31, 2017, 2016 and 2015, the Partnership completed the following debt issuances (in millions, except interest rates):
Date of
Issuance
 Issuing Subsidiary 
Amount of
 Issuance
 
Purchaser
Discounts
and
Expenses
 
Net
Proceeds
 
Interest
Rate
 Maturity Date 
Interest
 Payable
January 2017 Boardwalk Pipelines $500.0
 $6.0
 $494.0
(1) 
4.45% 
July 15, 2027
 January 15 and July 15
May 2016 Boardwalk Pipelines $550.0
 $10.9
 $539.1
(2) 
5.95% 
June 1, 2026
 June 1 and December 1
March 2015 Boardwalk Pipelines $250.0
 $2.9
 $247.1
(3) 
4.95% 
December 15, 2024
 
June 15 and
 December 15


(1)The net proceeds of this offering were used to retire the outstanding $275.0 million aggregate principal amount of the Gulf South 2017 Notes and to fund growth capital expenditures.
(2)The net proceeds of this offering were used to retire the outstanding $250.0 million aggregate principal amount of the Boardwalk Pipelines 5.875% notes due 2016 and the outstanding $300.0 million aggregate principal amount of the Boardwalk Pipelines 2017 Notes at their maturity.
(3)The net proceeds of this offering were used to retire a portion of the outstanding $250.0 million aggregate principal amount of the Texas Gas 4.60% notes due 2015.

The Partnership’sCompany's notes and debentures are redeemable, in whole or in part, at the Partnership’sCompany's option at any time, at a redemption price equal to the greater of 100% of the principal amount of the notes to be redeemed or a “make whole”"make whole" redemption price based on the remaining scheduled payments of principal and interest discounted to the date of redemption at a rate equal to the U.S. Treasury rate plus 20 to 50 basis points depending upon the particular issue of notes, plus accrued and unpaid interest, if any. Other customary covenants apply, including those concerning events of default.

The indentures governing the notes and debentures have restrictive covenants which provide that, with certain exceptions, neither the PartnershipCompany nor any of its subsidiaries may create, assume or suffer to exist any lien upon any property to secure any indebtedness unless the debentures and notes shall be equally and ratably secured. All of the Partnership'sCompany's debt obligations are unsecured. At As of December 31, 2017, Boardwalk Pipelines2023, the Company and its operating subsidiaries were in compliance with their debt covenants.

Redemption of Notes

On November 1, 2022, the Company retired the outstanding $300.0 million aggregate principal amount of Boardwalk Pipelines 3.375% notes due 2023 at a redemption price of 100% of the principal amount plus unpaid and accrued interest. The retirement was funded from available cash.

Revolving Credit Facility

The PartnershipCompany has a revolving credit facility having aggregate lending commitments of $1.5 billion andthat includes Boardwalk Pipelines, Texas Gas Gulf South and Gulf CrossingSouth as borrowers (Borrowers). that is evidenced by a credit agreement. Interest is determined, at the Partnership'sCompany's election, by reference to (a) the base rate which is the highest of (1) the prime rate, (2) the federal funds rate plus 0.50% and (3) the one month Eurodollarterm Secured Overnight Financing Rate plus 1.00%, plus an applicable margin, or (b) the one-month LIBORterm Secured Overnight Financing Rate plus an applicable margin.a flat 10 basis point credit spread adjustment across all available interest periods. The applicable margin ranges from 0.00% to 0.75% for loans bearing interest based on the base rate and ranges from 1.00% to 1.75% for loans bearing interest based on the LIBOR rate, in each case determined based on the individual Borrower's credit rating from time to time. The Third Amended and Restated Revolving Credit Agreement (amended credit agreement)agreement provides for a quarterly commitment fee charged on the average daily unused amount of the revolving credit facility ranging from 0.10% to 0.275% which is determined based on the individual Borrower's credit rating from time to time. In 2017, the Partnership extended the maturity date of the revolving credit facility by one additional year to May 26, 2022. The revolving credit facility has a borrowing capacity of $1.5$1.0 billion through May 26, 2020,27, 2027, and a borrowing capacity of $1.475 billion$912.2 million from May 27, 2020,28, 2027, to May 26, 2022.2028.




The revolving credit facilityagreement contains various restrictive covenants and other usual and customary terms and conditions, including restrictions regarding the incurrence of additional debt, the sale of assets and sale-leaseback transactions. The financial covenants under the revolving credit facilityagreement require the PartnershipCompany and its subsidiaries to maintain, among other things, a ratio of total consolidated debt to consolidated EBITDA (as defined in the amended credit agreement) measured for the previous twelve months of not more than 5.0 to 1.0, or up to 5.5 to 1.0 for (i) the three quarters followingquarter in which the consummation of a qualified acquisition or series of acquisitions, where the purchase price exceeds $100.0 million over a rolling 12-month period.period and (ii) the three quarters following the qualified acquisition quarter. The PartnershipCompany and its subsidiaries were in compliance with all covenant requirements under the revolving credit facilityagreement as of December 31, 20172023.
.

Outstanding borrowings under the Partnership'sCompany's revolving credit facility as of December 31, 2017 and 2016,2023, were $385.0 million and $180.0$25.0 million, with a weighted-average borrowinginterest rate of 2.72% and 1.96%6.71%. As of December 31, 2022, the Company had the entire $1.0 billion of borrowing capacity available under its revolving credit facility. As of February 13, 2018,2, 2024, the PartnershipCompany had $445.0$75.0 million of outstanding borrowings and approximately $1.1 billion$925.0 million of available borrowing capacity under theits revolving credit facility.

Cash Distributions    
Subordinated Loan Agreement with Affiliate

The Partnership has a Subordinated Loan Agreement withCash distributions the Company paid to BPHC (Subordinated Loan) under which the Partnership can borrow up toand Boardwalk GP were $300.0 million throughfor the year ended December 31, 2018. The Subordinated Loan bears interest at increasing rates, ranging from 5.75% to 9.75%, with the first increase occurring on May 1, 2018, to 7.75%, payable semi-annually in June2023, and December, and matures in July 2024. The Subordinated Loan must be prepaid with the net cash proceeds from the issuance of additional equity securities by the Partnership or the incurrence of certain indebtedness by the Partnership or its subsidiaries, although BPHC may waive such prepayment. BPHC may also demand prepayment at any time, up to the full amount then outstanding, with 15-months' notice. The Subordinated Loan is subordinated in right of payment to the Partnership’s obligations under its revolving credit facility pursuant to the terms of a Subordination Agreement between BPHC and Wells Fargo, N.A., as representative of the lenders under the revolving credit facility. Through the filing date of this Report, the Partnership has not borrowed any amounts under the Subordinated Loan.

Capital Lease

The Partnership recorded a capital lease obligation of $10.5$102.2 million in 2013 related to the lease of an office building in Owensboro, Kentucky. The office building lease has a term of fifteen years with two twenty-year renewal options. Future commitments under the capital lease are $1.0 million for 2018, $1.1 million for each year 2019 through 2022 and $6.2 million thereafter. After deducting $3.0 million for amounts representing interest, the present value of the capital lease obligation at December 31, 2017, was $8.6 million, of which $0.5 million was recorded in Other current liabilities and $8.1 million was recorded in Long–term debt and capital lease obligation.

Amortization of the office building under the capital lease for each of the years ended December 31, 2017, 20162022 and 2015, was $0.7 million and was included in Depreciation and amortization. As of December 31, 2017 and 2016, assets recorded in Natural gas transmission and other plant under the capital lease were $10.5 million and the accumulated amortization was $3.1 million and $2.4 million.2021.

Issuances of Common Units

The Partnership had no common unit issuances for the years ended December 31, 2017 and 2016. For the year ended December 31, 2015, the Partnership completed the following issuances and sales of common units under an equity distribution agreement (in millions, except the issuance price):
Month of Offering 
Number of
Common Units
 
Issuance
Price
 Less Underwriting Discounts and Expenses 
Net Proceeds
(including General Partner Contribution)
 
Common Units Outstanding
After Offering
 
Common Units Held by the Public
After Offering
February 2015 - April 2015 7.0 $16.19
(1) 
 $1.1
 $115.4
 250.3
  124.6


(1) The issuance price represents the average issuance price for the common units issued under an equity distribution agreement.



Summary of Changes in Outstanding Units

The following table summarizes changes in the Partnership’s common units since January 1, 2015 (in millions):
Common
 Units
Balance, January 1, 2015243.3
Common units issued under an equity distribution agreement7.0
Balance, December 31, 2015, 2016 and 2017250.3

64
Registration Rights Agreement



The Partnership entered into an Amended and Restated Registration Rights Agreement with BPHC under which the Partnership agreed to register the resale of up to 27.9 million common units by BPHC and to reimburse BPHC up to a maximum amount of $0.914 per common unit for underwriting discounts and commissions. As of December 31, 2017 and 2016, the Partnership had an accrued liability of approximately $16.0 million for future underwriting discounts and commissions that would be reimbursed to BPHC and other registration and offering costs that are expected to be incurred by the Partnership.


Note 13: Employee Benefits
Note 11:  
Employee Benefits

Retirement Plans

Defined Benefit Retirement Plans (Retirement Plans)

Texas Gas employees hired prior to November 1, 2006, are covered under a non-contributory, defined benefit pension plan (Pension Plan). The Texas Gas Supplemental Retirement Plan (SRP) provides pension benefits for the portion of an eligible employee’semployee's pension benefit under the Pension Plan that becomes subject to compensation limitations under the Internal Revenue Code. Collectively, the PartnershipCompany refers to the Pension Plan and the SRP as Retirement Plans. The PartnershipCompany uses a measurement date of December 31 for itsthe Retirement Plans.

As a result of the Texas Gas rate case settlement in 2006, the PartnershipCompany is required to fund the amount of annual net periodic pension cost associated with the Pension Plan, including a minimum of $3.0 million, which is the amount included in rates. In each of 20172023 and 2016,2022, the PartnershipCompany funded $3.0$4.9 million and $4.6 million to the Pension Plan and expects to fund an additional $3.0 million to the plan in 2018. The Partnership does not anticipate that any Pension Plan assets will be returned to the Partnership during 2018.2024. In 2017,2023, no SRP payments were made and in 2022 there were noSRP payments made under the SRP. In 2016, payments of less than $0.1 million were made under the SRP. The Partnership does not expect to fund the SRP until such time as benefits are paid.$2.8 million.

The PartnershipCompany recognizes in expense each year the actuarially determined amount of net periodic pension cost associated with the Retirement Plans, including a minimum amount of $3.0 million related to its Pension Plan, in accordance with the 2006 rate case settlement. Texas Gas is permitted to seek future rate recovery for amounts of annual Pension Plan costs in excess of $6.0 million and is precluded from seeking future recovery of annual Pension Plan costs between $3.0 million and $6.0 million. As a result, the PartnershipCompany would recognize a regulatory asset for amounts of annual Pension Plan costs in excess of $6.0 million and would reduce its regulatory asset to the extent that annual Pension Plan costs are less than $3.0 million. Annual Pension Plan costs between $3.0 million and $6.0 million will be charged to expense.

Postretirement Benefits Other Than Pension (PBOP)

Texas Gas provides postretirement medical benefits and life insurance to retired employees who were employed full time, hired prior to January 1, 1996, and have met certain other requirements. In 20172023 and 2016,2022, the PartnershipCompany contributed $0.1 million and $0.2 million to the PBOP plan. The PBOP plan is in an overfunded status; therefore, the PartnershipCompany does not expect to make any contributions to the plan in 2018.2024. The PartnershipCompany does not anticipate that any plan assets will be returned to the PartnershipCompany during 2018.2024. The PartnershipCompany uses a measurement date of December 31 for its PBOP plan.


65


Projected Benefit Obligation, Fair Value of Assets and Funded Status

The projected benefit obligation, fair value of assets, funded status and the amounts not yet recognized as components of net periodic pension and postretirement benefits cost for the Retirement Plans and PBOP at December 31, 20172023 and 2016,2022, were as follows (in millions):
 Retirement PlansPBOP
 For the Year Ended
December 31,
For the Year Ended December 31,
 2023202220232022
Change in benefit obligation:    
Benefit obligation at beginning of period$86.4 $109.1 $23.7 $30.6 
Service cost1.9 2.2  — 
Interest cost4.1 3.1 1.2 0.8 
Plan participants' contributions — 1.0 1.0 
Actuarial loss/(gain)4.0 (7.9)2.3 (4.4)
Benefits paid(0.5)(0.5)(4.8)(4.3)
Settlements(7.9)(19.6) — 
Benefit obligation at end of period$88.0 $86.4 $23.4 $23.7 
Change in plan assets:    
Fair value of plan assets at beginning of period$77.6 $103.5 $81.2 $93.0 
Actual return on plan assets9.2 (13.2)4.8 (8.6)
Company's contribution4.9 7.4 0.1 0.2 
Plan participants' contributions — 1.0 0.9 
Benefits paid(0.5)(0.5)(4.8)(4.3)
Settlements(7.9)(19.6) — 
Fair value of plan assets at end of period$83.3 $77.6 $82.3 $81.2 
Funded status$(4.7)$(8.8)$58.9 $57.5 
Items not recognized as components of net periodic cost:   
Net actuarial loss$12.7 $16.9 $3.0 $3.2 
 Retirement Plans PBOP
 For the Year Ended
December 31,
 For the Year Ended
December 31,
 2017 2016 2017 2016
Change in benefit obligation:       
Benefit obligation at beginning of period$137.7
 $143.8
 $42.1
 $48.4
Service cost3.5
 3.6
 0.1
 0.3
Interest cost4.4
 4.4
 1.6
 2.0
Plan participants’ contributions
 
 1.0
 1.0
Actuarial loss (gain)5.0
 1.6
 0.2
 (5.6)
Benefits paid(0.4) (0.5) (3.6) (4.0)
Settlement(9.5) (15.2) 
 
Benefit obligation at end of period$140.7
 $137.7
 $41.4
 $42.1
        
Change in plan assets: 
  
  
  
Fair value of plan assets at beginning of period$115.7
 $119.5
 $85.9
 $86.4
Actual return on plan assets10.1
 8.9
 4.9
 2.3
Benefits paid(0.4) (0.5) (3.7) (4.0)
Settlement(9.5) (15.2) 
 
Company contributions3.0
 3.0
 0.1
 0.2
Plan participants’ contributions
 
 1.0
 1.0
Fair value of plan assets at end of period$118.9
 $115.7
 $88.2
 $85.9
        
Funded status$(21.8) $(22.0) $46.8
 $43.8
        
Items not recognized as components of net periodic cost:  
  
  
Net actuarial loss$23.7
 $24.6
 $3.8
 $4.0

At December 31, 20172023 and 2016,2022, the following aggregate information relates only to the underfunded plans (in millions):
Retirement Plans
 For the Year Ended
December 31,
 20232022
Projected benefit obligation$88.0 $86.4 
Accumulated benefit obligation84.6 82.7 
Fair value of plan assets83.3 77.6 
 Retirement Plans
 For the Year Ended
December 31,
 2017 2016
Projected benefit obligation$140.7
 $137.7
Accumulated benefit obligation130.3
 128.2
Fair value of plan assets118.9
 115.7

66




Components of Net Periodic Benefit Cost

Components of net periodic benefit cost for both the Retirement Plans and PBOP for the years ended December 31, 2017, 20162023, 2022 and 2015,2021, were as follows (in millions):
 Retirement PlansPBOP
 For the Year Ended
December 31,
For the Year Ended
December 31,
 202320222021202320222021
Service cost$1.9 $2.2 $2.6 $ $— $0.1 
Interest cost4.1 3.1 2.1 1.2 0.8 0.9 
Expected return on plan assets(3.6)(5.3)(6.2)(2.4)(1.8)(2.7)
Amortization of prior service cost0.1 0.1 —  — — 
Amortization of unrecognized net loss1.2 0.7 0.8  — — 
Settlement charge1.3 2.9 1.6  — — 
Regulatory asset decrease — 2.5  —  
Net periodic benefit cost$5.0 $3.7 $3.4 $(1.2)$(1.0)$(1.7)
 Retirement Plans PBOP
 For the Year Ended
December 31,
 For the Year Ended
December 31,
 2017 2016 2015 2017 2016 2015
Service cost$3.5
 $3.6
 $3.8
 $0.1
 $0.3
 $0.3
Interest cost4.4
 4.4
 4.9
 1.6
 2.0
 2.0
Expected return on plan assets(7.8) (7.9) (9.1) (4.4) (4.6) (4.6)
Amortization of prior service credit
 
 
 
 (0.9) (7.7)
Amortization of unrecognized net loss2.0
 2.7
 2.0
 
 
 
Settlement charge1.7
 3.2
 2.5
 
 
 
Net periodic benefit cost$3.8
 $6.0
 $4.1
 $(2.7) $(3.2) $(10.0)

Due to the Texas Gas rate case settlement in 2006, Texas Gas is permitted to seek future rate recovery for amounts of annual Pension Plan costs in excess of $6.0 million.

Estimated Future Benefit Payments

The following table shows benefit payments, which reflect expected future service, as appropriate, which are expected to be paid for both the Retirement Plans and PBOP (in millions):
 
Retirement Plans
PBOP
2024$18.4 $2.0 
202512.5 2.0 
202610.7 1.9 
202710.5 1.8 
20288.4 1.7 
2029-203322.6 7.2 
 
Retirement Plans
 PBOP
2018$20.2
 $2.7
201914.4
 2.7
202013.8
 2.7
202113.0
 2.8
202214.0
 2.6
2023-202761.1
 12.2


Weighted–AverageWeighted-Average Assumptions

Weighted-average assumptions used to determine benefit obligations for the years ended December 31, 20172023 and 2016,2022, were as follows:
 Retirement PlansPBOP
For the Year Ended
December 31,
For the Year Ended
December 31,
 2023202220232022
 PensionSRPPensionSRP
Discount rate4.90 %4.90 %5.30 %5.30 %5.10 %5.40 %
Expected return on plan assets5.00 %5.00 %5.00 %5.00 %3.25 %2.99 %
Rate of compensation increase3.00%-3.50%3.00%-3.50%3.00%-4.50%3.00%-4.50% %— %
 Retirement Plans PBOP
 For the Year Ended
December 31,
 For the Year Ended
December 31,
 2017 2016 2017 2016
 Pension SRP Pension SRP    
Discount rate3.25% 3.40% 3.60% 3.85% 3.70% 4.20%
Expected return on plan assets7.25% 7.25% 7.25% 7.25% 5.30% 5.30%
Rate of compensation increase3.86% 3.86% 3.86% 3.86% 
 

67




Weighted-average assumptions used to determine net periodic benefit cost for the periods indicated were as follows:
 Retirement Plans PBOP
 For the Year Ended
December 31,
 For the Year Ended
December 31,
 2017 2016 2015 2017 2016 2015
 
Pension 
 SRP 
Pension 
 SRP 
Pension(2)
 SRP      
         3.35%        
Discount rate(1) 3.85% (1) 4.00% 3.60% 3.75% 4.20% 4.25% 3.90%
Expected return on plan assets7.25% 7.25% 7.25% 7.25% 7.50% 7.50% 5.30% 5.30% 5.30%
Rate of compensation increase3.86% 3.86% 3.50% 3.50% 3.50% 3.50% 
 
 

 Retirement PlansPBOP
 For the Year Ended
December 31,
For the Year Ended
December 31,
 202320222021202320222021
Pension
SRP
Pension
SRPPensionSRP
Discount rate(1)4.90 %(1)(2)(1)1.55 %5.40 %2.90 %2.60 %
Expected return on plan assets5.00%5.00 %6.25%6.25 %6.50%6.50 %2.99 %2.01 %2.81 %
Rate of compensation increase
3.00% -
4.50%
3.00% -
4.50%
3.00%3.00 %3.00%3.00 % %— %— %

(1)Pension expense was remeasured quarterly in 2017 and 2016. The quarterly remeasurements for each quarter in 2017 and 2016 were as follows: Quarter 1: 3.45% and 3.45%; Quarter 2: 3.30% and 3.00%; Quarter 3: 3.20% and 2.85%; and Quarter 4: 3.25% and 3.60%.
(2) (1)Pension expense was remeasured quarterly in 2023, 2022 and 2021. The quarterly remeasurements for each quarter in 2023, 2022 and 2021 were as follows: Quarter 1: 5.35%, 3.00% and 2.05%; Quarter 2: 5.15%, 4.10% and 2.05%; Quarter 3: 5.45%, 4.65% and 1.95%; and Quarter 4: 4.90%, 5.30% and 2.30%.
(2)SRP expense was remeasured with discount rates of 4.15% at AugustJune 30, 2022, and 5.30% at December 31, 2015,2022, to reflect settlements.

In determining the discount rate assumption, current market and liability information is utilized, including a settlement.discounted cash flow analysis of the pension and postretirement obligations. In particular, the basis for the discount rate selection was the yield on indices of highly rated fixed income debt securities with durations comparable to that of the Company's plan liabilities. The yield curve was applied to expected future retirement plan payments to adjust the discount rate to reflect the cash flow characteristics of the plans. The yield curves and indices evaluated in the selection of the discount rate were comprised of high-quality corporate bonds that are rated AA by an accepted rating agency.

The expected long-term rate of return for plan assets wasis determined based on widely-accepted capital market principles, long-term return analysis for global fixed income and equity markets as well as the active total return oriented portfolio management style. Long-term trends are evaluated relative to market factors such as inflation, interest rates and fiscal and monetary policies, in order to assess the capital market assumptions as applied to the plan. Consideration of diversification needs and rebalancing is maintained.

PBOP Assumed Health Care Cost Trends

Assumed health care cost trend rates have a significant effect on the amounts reported for PBOP. A one-percentage-point change in assumed trend rates for health care costs would have had the following effects on amounts reported for the year ended December 31, 2017 (in millions):

Effect of 1% Increase: 2017
Benefit obligation at end of year $1.9
Total of service and interest costs for year 0.1

Effect of 1% Decrease:  
Benefit obligation at end of year $(1.6)
Total of service and interest costs for year (0.1)


For measurement purposes, for December 31, 2017, health care cost trend rates for the plans were assumed to remain at 6.5% for 2018-2019, grading down to 5.0% by 2021, assuming 0.5% annual increments for all participants. For December 31, 2016, health care cost trend rates for the plans were assumed to remain at 7.0% for 2017-2018, grading down to 5.0% by 2021, assuming 0.5% annual increments for all participants.



Pension Plan and PBOP Asset Allocation and Investment Strategy

Pension Plan

The Pension Plan investmentsassets are held in a trust account and consist of an undivided interest in an investment account of the Loews Corporation Employees RetirementTexas Gas Trust, (Master Trust), established by LoewsTexas Gas, which manages and its participating subsidiaries. Use of the Master Trust permits the co-investing of trust assets ofadministers the Pension Plan with the assets of the Loews Corporation Cash Balance Retirement Plan for investment and administrative purposes. Although assets of all plans are co-invested in the Master Trust, the custodian maintains supporting records for the purpose of allocating the net gain or loss of the investment account to the participating plans.Plan. The net investment income of the investment assets is allocated by the custodian to each participating plan based on the relationship of the interest of each plan to the total of the interests of the participating plans. The MasterTexas Gas Trust assets are measured at fair value. The fair value of the interest in the assets of the Master Trust associated with the Pension Plan as of December 31, 2017 and 2016, was $118.9 million (or 50.8%) and $115.7 million (or 50.3%), of the total Master Trust assets.

Equity securities are publicly traded securities which are valued using quoted market prices and are considered a Level 1 investmentinvestments under the fair value hierarchy. Short-term investments that are actively traded or have quoted prices, such as money market funds or treasury bills, are considered Level 1 investments. Fixed income mutual funds areinclude highly liquid government securities and exchange traded bonds, valued using quoted market prices, and are considered a Level 1 investment. Asset-backedinvestments. Tax exempt securities are valued using a methodology based on information generated by market transactions involving identical or comparable assets, a discounted cash flow methodology or a combination of both when necessary. Common inputs for these securities, which are considered Level 2 investments, include pricing for similar securities, recently executed transactions, cash flow models with yieldmarketplace quotes, benchmark yields, spreads off benchmark yields, interest rates, U.S. Treasury or swap curves broker/dealer quotes and other pricing models utilizing observable inputs, which include prepayment and default projections based on past performance of the underlying collateral and current market data, and are considered Level 2 investments. The limited partnership investments held within the Master Trust are recorded at fair value, which represents the Master Trust’s shares of the net asset value of each partnership, as determined by the general partner. The limited partnership and other invested assets consist primarily of hedge fund strategies that generate returns through investing in marketable securities in the public fixed income and equity markets.inputs.

68


The following table sets forth, by level within the fair value hierarchy, a summary of the Master Trust’s investmentsTexas Gas Trust's assets measured at fair value on a recurring basis at December 31, 20172023 (in millions):

 Master Trust Assets
 Measured under Fair Value Hierarchy Measured at Net Asset Value Total Master Trust Assets
 Level 1 Level 2 Level 3 Total
Equity securities$44.0
 $
 $
 $44.0
 $
 $44.0
Short-term investments6.2
 
 
 6.2
 
 6.2
Fixed income mutual funds96.2
 
 
 96.2
 
 96.2
Asset-backed securities
 1.5
 
 1.5
 
 1.5
Total assets measured at fair
   value
146.4

1.5



147.9
 
 147.9
Total limited partnerships
   measured at net asset value

 
 
 
 86.3
 86.3
Total$146.4
 $1.5
 $
 $147.9
 $86.3
 $234.2
 Pension Plan Trust Assets
 Level 1Level 2Level 3Total
Equity securities$34.6 $— $— $34.6 
Short-term investments17.3 — — 17.3 
Fixed income mutual funds26.3 — — 26.3 
Tax exempt securities— 5.1 — 5.1 
Total assets$78.2 $5.1 $— $83.3 



The following table sets forth, by level within the fair value hierarchy, a summary of the Master Trust’s investmentsTexas Gas Trust's assets measured at fair value on a recurring basis at December 31, 20162022 (in millions):
 Master Trust Assets
 Measured under Fair Value Hierarchy Measured at Net Asset Value Total Master Trust Assets
 Level 1 Level 2 Level 3 Total
Equity securities$40.6
 $
 $
 $40.6
 $
 $40.6
Short-term investments6.7
 
 
 6.7
 
 6.7
Fixed income mutual funds93.1
 
 
 93.1
 
 93.1
Asset-backed securities
 7.1
 
 7.1
 
 7.1
Total assets measured at fair
value
140.4
 7.1
 
 147.5
 
 147.5
Total limited partnerships
measured at net asset value

 
 
 
 82.5
 82.5
Total$140.4

$7.1

$

$147.5

$82.5

$230.0

 Pension Plan Trust Assets
 Level 1Level 2Level 3Total
Equity securities$17.5 $— $— $17.5 
Short-term investments28.3 — — 28.3 
Fixed income mutual funds31.8 — — 31.8 
Total assets$77.6 $— $— $77.6 

PBOP

The PBOP plan assets are held in a trust and are measured at fair value. Short-term investments and other assets that are actively traded or have quoted prices, such as money market or mutual funds, are considered Level 1 investments. Fixed income mutual funds are actively traded and valued using quoted market prices and are considered Level 1 investments. Taxsecurities, such as tax exempt securities consisting of municipal securities,and corporate and other taxable bonds, and asset-backed securities are valued using a methodology based on information generated by market transactions involving identical or comparable assets, a discounted cash flow methodology or a combination of both when necessary. Common inputs for these securities, which are considered Level 2 investments, include pricing for similar securities, recently executed transactions, cash flow models with yieldmarketplace quotes, benchmark yields, spreads off benchmark yields, interest rates, U.S. Treasury or swap curves broker/dealer quotes and other pricing models utilizing observable inputs andinputs. Other liabilities are considered Level 2 investments. Specificallyprimarily pending purchase transactions for asset-backed securities, key inputs include prepayment and default projections basedcertain investments that were executed on past performancethe last day of the underlying collateralyear and current market data.not settled until the following year.

The following table sets forth, by level within the fair value hierarchy, a summary of the PBOP trust investments measured at fair value on a recurring basis at December 31, 20172023 (in millions):
 PBOP Trust Assets
 Level 1Level 2Level 3Total
Short-term investments$12.8 $— $— $12.8 
Other assets2.1 — — 2.1 
Asset-backed securities— 0.8 — 0.8 
Corporate bonds— 67.0 — 67.0 
Tax exempt securities— 38.9 — 38.9 
Total assets$14.9 $106.7 $— $121.6 
Other liabilities(39.3)— — (39.3)
Total liabilities$(39.3)$— $— $(39.3)

69

 PBOP Trust Assets
 Level 1 Level 2 Level 3 Total
Short-term investments$2.2
 $
 $
 $2.2
Fixed income mutual funds13.9
 
 
 13.9
Asset-backed securities
 11.5
 
 11.5
Corporate bonds
 18.1
 
 18.1
Tax exempt securities
 42.5
 
 42.5
Total investments$16.1
 $72.1
 $
 $88.2


The following table sets forth, by level within the fair value hierarchy, a summary of the PBOP trust investments measured at fair value on a recurring basis at December 31, 20162022 (in millions):
 PBOP Trust Assets
 Level 1 Level 2 Level 3 Total
Short-term investments$3.2
 $
 $
 $3.2
Fixed income mutual funds4.9
 
 
 4.9
Asset-backed securities
 15.5
 
 15.5
Corporate bonds
 18.6
 
 18.6
Tax exempt securities
 43.7
 
 43.7
Total investments$8.1
 $77.8
 $
 $85.9

 PBOP Trust Assets
 Level 1Level 2Level 3Total
Short-term investments$2.2 $— $— $2.2 
Other assets1.8 — — 1.8 
Asset-backed securities— 0.9 — 0.9 
Corporate bonds— 54.9 — 54.9 
Tax exempt securities— 34.4 — 34.4 
Total assets$4.0 $90.2 $— $94.2 
Other liabilities(13.0)— — (13.0)
Total liabilities$(13.0)$— $— $(13.0)
    

Investment Strategy

Investment strategy

Pension Plan: The PartnershipCompany employs a total-return approach using a mix of equities and fixed income investmentssecurities designed to maximize the long-term return on plan assets for a prudent level of risk and generate cash flows adequate to meet plan requirements. The intent of this strategy is to minimize plan expenses by outperforminggenerating investment returns that exceed the growth of the plan liabilities over the long run. Risk tolerance is established through careful consideration of the plan liabilities, plan funded status and corporate financial conditions. The investment strategy has been to allocate up to 60%target allocation of plan assets is 85% of the investment portfolio to equity and alternative investments, including limited partnerships,fixed income securities, with the remainder primarily invested in fixed income securities. The investment portfolio contains a diversified blend of fixed income, equity and short-term securities. Alternative investments, including limited partnerships, have been used to enhance risk adjusted long-term returns while improving portfolio diversification. At December 31, 2017, the pension trust had committed $6.8 million to future capital calls from various third party limited partnership investments in exchange for an ownership interest in the related partnerships.cash. Investment risk is monitored through annual liability measurements, periodic asset and liability studies and quarterly investment portfolio reviews.

PBOP: The investment strategy for the PBOP assets is to reduce the volatility of plan investments while protecting the initial investment given the overfunded status of the plan. The Company uses a broad array of public and private assets and investment vehicles to achieve a return that is targeted to meet or exceed the plan blended benchmark indices. At December 31, 20172023 and 2016, all2022, the investment portfolio contained a diversified blend of the PBOP investments were in fixed income securities.securities, such as tax exempt securities and corporate bonds, asset-backed securities, short-term securities and other assets.

Defined Contribution Plan

Texas Gas employees hired on or after November 1, 2006, and all other employees of the PartnershipCompany are provided retirement benefits under a defined contribution plan, which also provides 401(k) plan benefits to its employees.participants. Costs related to the Partnership’sCompany's defined contribution plan were $11.0$14.0 million, $10.7$12.7 million and $9.8$12.8 million for the years ended December 31, 2017, 20162023, 2022 and 2015.2021.

Long-Term Incentive Compensation Plans

The Partnership2018 LTIP provides for grants of Performance Awards to selected employees long-term compensation awards under the LTIP and the UAR and Cash Bonus Plan. These awards are intended to align the interests of the employeesCompany. A Performance Award is a long-term incentive award with those of the Partnership’s unitholders, encourage superior performance, attract and retain employees who are essential for the Partnership’s growth and profitability and to encourage employees to devote their best efforts to advancing the Partnership’s business over both long and short-term time horizons. The Partnership also makes annual grants of common units to certain of its directors under the LTIP.

LTIP

The Partnership reserved 3,525,000 common units for grants of units, restricted units, unit options and UARs to officers and directors of the Partnership’s general partner and for selected employees under the LTIP. The Partnership has outstanding Phantom Common Unitsa stated target amount which were granted under the plan. Each outstanding Phantom Common Unit includes a tandem grant of Distribution Equivalent Rights (DERs). The grantee must select one of two irrevocable payment elections shortly after the award is granted. If the first payment election is selected, an amount equal to the fair market value of the vested portion of the Phantom Common Units (as defined in the plan) and associated DERs will become payable to the grantee in cash on each of the two vesting dates. If the second payment election option is selected, the Phantom Common Units and associated DERs will become payable in cash, after adjustments, upon vesting based on certain specified performance criteria being met. In the secondcase of retirement, any outstanding and unvested awards would become fully vested upon retirement and the Performance Awards will be paid at the original vesting date. The economic value ofIn 2023 and 2022, the Phantom Common Units is directly tied to the value of the Partnership’s common units, but these awards do not confer any rights of ownership to the grantee. The fair value of the awards will be recognized ratably over the vesting period and remeasured each quarter until settlement based on the market price of the Partnership’s common units and amounts credited under the DERs. Except for the annual grants of common unitsCompany granted to certain employees $16.3 million and $12.5 million of its directors, the Partnership has not made any grantsPerformance Awards. The Company recorded compensation expense of units, restricted units or unit options under the plan.



A summary of the status of the Phantom Common Units granted under the Partnership’s LTIP as of December 31, 2017$14.2 million, $12.3 million and 2016, and changes during$12.7 million related to Performance Awards for the years ended December 31, 20172023, 2022 and 2016, is presented below:
 Phantom Common Units 
Total Fair Value
(in millions)
 
Weighted-Average Vesting Period
 (in years)
Outstanding at January 1, 2016 (1)
645,968
 $8.7
 1.5
Granted865,091
 10.2
 2.3
Paid(237,972) (4.1) 
Forfeited(15,462) 
 
Outstanding at December 31, 2016 (1)
1,257,625
 22.5
 1.2
Granted487,142
 8.1
 2.3
Paid(735,231) (11.2) 
Forfeited(36,641) 
 
Outstanding at December 31, 2017 (1)
972,895
 $13.1
 1.0

(1)Represents fair value and remaining weighted-average vesting period of outstanding awards at the end of the period.

The fair value of the awards at the date of grant was based on the closing market price of the Partnership’s common units on or directly preceding the date of grant. The fair value of the awards at December 31, 20172021, and 2016, was based on the closing market price of the common unit on those dates of $12.91 and $17.36 plus the accumulated value of the DERs. The fair value of the awards will be recognized ratably over the vesting period and remeasured each quarter until settlement in accordance with the treatment of awards classified as liabilities, and taking into account the payment elections selected by the grantees. The Partnership recorded $7.8 million, $11.6had $9.8 million and $3.6$7.2 million in Administrative and general expenses during 2017, 2016 and 2015 for the Phantom Common Unit awards. The total estimatedof remaining unrecognized compensation expense related to the Phantom Common Units outstanding at December 31, 2017 and 2016, was $6.0 million and $11.9 million.

In 2017 and 2016, the general partner purchased 10,812 and 17,108 of the Partnership’s common units in the open market at a price of $18.50 and $11.75 per unit. These units were granted under the LTIP to the independent directorsPerformance Awards as part of their director compensation. At December 31, 2017, 3,450,060 units were available for grants under the LTIP.

UAR and Cash Bonus Plan

The UAR and Cash Bonus Plan provides for grants of UARs and Long-Term Cash Bonuses to selected employees of the Partnership. In 2017, the Partnership granted to certain employees $2.7 million of Long-Term Cash Bonuses, which will vest and become payable to the holders in cash equal to the amount of the grant after the vesting dates and in 2014, had granted $9.2 million of Long-Term Cash Bonuses, which vested and were paid in 2016. The Partnership recorded compensation expense of $1.1 million, $3.5 million and $2.8 million for the years ended December 31, 2017, 2016 and 2015, related to the Long-Term Cash Bonuses. As of December 31, 2017, the Partnership had $1.6 million remaining unrecognized compensation expense related to the Long-Term Cash Bonuses.2023 and 2022.

Retention Payment Agreements

In 2014, the Partnership entered into retention payment agreements with certain key employees, under which an employee would be entitled to a fixed amount of cash prepayments, subject to the employees remaining employed by the Partnership over a period of three years and other conditions. As of December 31, 2017, all amounts under the retention payment agreements had vested and had been paid. Retention payments of $5.8 million, $2.9 million and $2.9 million were made in 2017, 2016 and 2015. The Partnership recorded compensation expense of $0.9 million, $2.2 million and $3.8 million for the years ended December 31, 2017, 2016 and 2015.


73




Note 12:  Cash Distributions and Net Income per Unit

Cash Distributions

The Partnership’s cash distribution policy requires that the Partnership distribute to its various ownership interests on a quarterly basis all of its available cash, as defined in its partnership agreement. IDRs, which represent a limited partner ownership interest and are currently held by the Partnership’s general partner, represent the contractual right to receive an increasing percentage of quarterly distributions of available cash as follows:
 Total Quarterly Distributions 
Marginal Percentage Interest
in Distributions
 Target Amount 
Limited Partner
Unitholders
 
General 
Partner and
IDRs
First Target Distributionup to $0.4025 98% 2%
Second Target Distributionabove $0.4025 up to $0.4375 85% 15%
Third Target Distributionabove $0.4375 up to $0.5250 75% 25%
Thereafterabove $0.5250 50% 50%


Since 2015, the Partnership has declared a quarterly distribution of $0.10 per unit with respect to its common units, resulting in quarterly payments of $25.1 million to its common unitholders and $0.5 million to its general partner. For 2017, 2016 and 2015, the Partnership paid no amounts with respect to the IDRs because the quarterly target distribution levels for IDR payout were not met.

In February 2018, the Partnership declared a quarterly cash distribution to unitholders of record of $0.10 per common unit.
Net Income per Unit
For purposes of calculating net income per unit, net income for the current period is reduced by the amount of available cash that will be distributed with respect to that period. Any residual amount representing undistributed net income (or loss) is assumed to be allocated to the various ownership interests in accordance with the contractual provisions of the partnership agreement.

Under the Partnership’s partnership agreement, for any quarterly period, the IDRs participate in net income only to the extent of the amount of cash distributions actually declared, thereby excluding the IDRs from participating in undistributed net income or losses. Accordingly, undistributed net income is assumed to be allocated to the other ownership interests on a pro rata basis. Payments made on account of the Partnership’s various ownership interests are determined in relation to actual declared distributions, and are not based on the assumed allocations required under GAAP.

The following table provides a reconciliation of net income and the assumed allocation of net income to the common units for purposes of computing net income per unit for the year ended December 31, 2017 (in millions, except per unit data):
 Total 
Common
Units
 General Partner and IDRs
Net income$297.0
    
Declared distribution102.2
 $100.2
 $2.0
Assumed allocation of undistributed net income194.8
 190.9
 3.9
Assumed allocation of net income attributable to limited
   partner unitholders and general partner
$297.0
 $291.1
 $5.9
Weighted-average units outstanding 
 250.3
  
Net income per unit 
 $1.16
  



The following table provides a reconciliation of net income and the assumed allocation of net income to the common units for purposes of computing net income per unit for the year ended December 31, 2016 (in millions, except per unit data):
 Total 
Common
Units
 General Partner and IDRs
Net income$302.2
    
Declared distribution102.2
 $100.2
 $2.0
Assumed allocation of undistributed net income200.0
 196.0
 4.0
Assumed allocation of net income attributable to limited
   partner unitholders and general partner
$302.2
 $296.2
 $6.0
Weighted-average units outstanding 
 250.3
  
Net income per unit 
 $1.18
  

The following table provides a reconciliation of net income and the assumed allocation of net income to the common units for purposes of computing net income per unit for the year ended December 31, 2015 (in millions, except per unit data):
 
 
Total 
Common
Units
 General Partner and IDRs
Net income$222.0
    
Declared distribution102.2
 $100.2
 $2.0
Assumed allocation of undistributed net income119.8
 117.3
 2.5
Assumed allocation of net income attributable to limited
   partner unitholders and general partner
$222.0
 $217.5
 $4.5
Weighted-average units outstanding  248.8
  
Net income per unit  $0.87
  


70



Note 14: Income Taxes
Note 13:  Income Taxes

The PartnershipCompany is not a taxable entity for federal income tax purposes. As such, it does not directly pay federal income tax. The Partnership’s taxable income or loss, which may vary substantially from the net income or loss reported in the Consolidated Statements of Income, is includable in the federal income tax returns of each partner. The aggregate difference in the basis of the Partnership’s net assets for financial and income tax purposes cannot be readily determined as the Partnership does not have access to the information about each partner’s tax attributes. The subsidiaries of the Partnership directly incur some income-based state taxes which are presented in Income taxes on the Consolidated Statements of Income.

Followingfollowing is a summary of the provision for income taxes for the periodsyears ended December 31, 2017, 20162023, 2022 and 20152021 (in millions):
 For the Year Ended December 31,
 202320222021
Current expense:   
State$0.8 $0.8 $0.5 
Deferred provision:   
State — 0.2 
Income taxes$0.8 $0.8 $0.7 
 For the Year Ended December 31,
 2017 2016 2015
Current expense:     
State$0.7
 $0.4
 $0.4
Total0.7
 0.4
 0.4
Deferred provision: 
  
  
State0.3
 0.2
 0.1
Total0.3
 0.2
 0.1
Income taxes$1.0
 $0.6
 $0.5


The Partnership’sCompany's tax years 20142020 through 20172023 remain subject to examination by the Internal Revenue Service and the states in which it operates. There were no differences between the provision at the statutory rate to the income tax provision at December 31, 2017, 20162023, 2022 and 2015.2021. As of December 31, 20172023 and 2016,2022, there were no significant deferred income tax assets or liabilities.





Note 14:  15: Credit Risk

Major Customers

For the years ended December 31, 2017, 20162023, 2022 and 2015,2021, no customer comprised 10% or more of the Partnership’sCompany's operating revenues.

Natural gas producers comprise a significant portion of the Partnership’s revenues and support several of the Partnership’s growth projects. In 2017, approximately 46% of revenues were generated from contracts with natural gas producers. In periods of low or unstable natural gas and oil prices, the Partnership could be exposed to increased credit risk associated with its producer customer group. The Partnership actively monitors its customer credit profiles, as well as the portion of revenues generated from investment-grade and non-investment-grade customers.

Gas Loaned to Customers

Natural gas price volatility can cause changes in credit risk related to gas and NGLs loaned to customers. As of December 31, 2017,2023, the amount of gas owed to the Company's operating subsidiaries due to gas imbalances and gas loaned under PAL and NNScertain firm service agreements was approximately 12.311.2 trillion British thermal units (TBtu). Assuming an average market price during December 20172023 of $2.76$2.33 per million British thermal unitsunit (MMBtu), the market value of that gas was approximately $34.0$26.1 million. As of December 31, 2017, there were no outstanding NGL imbalances owed to the operating subsidiaries. As of December 31, 2016,2022, the amount of gas owed to the Company's operating subsidiaries due to gas imbalances and gas loaned under PAL and NNScertain firm service agreements was approximately 13.613.3 TBtu. Assuming an average market price during December 20162022 of $3.47$5.33 per MMBtu, the market value of that gas at December 31, 2016, would have beenwas approximately $47.2$70.9 million. As of December 31, 2016, the amount of NGLs2023 and 2022, there were no outstanding NGL imbalances owed to the Company's operating subsidiaries due to imbalances was less than 0.1 MMBbls, which had a market value of approximately $0.4 million.subsidiaries. If any significant customer should have credit or financial problems resulting in a delay or failure to pay for services provided or repay the gas owed to the operating subsidiaries, it could have a material adverse effect on the Partnership’sCompany's financial condition, results of operations orand cash flows.



Note 15:  16: Related Party Transactions

Loews provides a variety of corporate services to the PartnershipCompany under services agreements, including but not limited to, information technology, tax, risk management, internal auditfinance and accounting, legal, tax and corporate development services, and also charges the PartnershipCompany for allocated overheads. The PartnershipCompany incurred charges related to these services of $6.6$4.3 million, $7.1$3.7 million and $8.8$5.5 million for the years ended December 31, 20172023, 2022 and 2021, which were recorded in ,Administrative and general 2016 and 2015.on the Consolidated Statements of Income.

DistributionsTotal distributions paid related to limited partner units held by BPHC and the 2% general partner interest held by Boardwalk GP were $52.2$300.0 million for the year ended December 31, 2023, and $102.2 million for each of the years ended December 31, 2017, 20162022 and 2015.2021.

In 2014, the Partnership and BPHC entered into a Subordinated Loan Agreement whereby the Partnership can borrow up to $300.0 million. Note 10 contains more information related to the affiliated long-term debt.

        
71


Note 16:  17: Supplemental Disclosure of Cash Flow Information (in millions):
 For the Year Ended December 31,
 202320222021
Cash paid during the period for:   
Amounts included in the measurement of operating lease liabilities$4.9 $3.7 $4.1 
Amounts included in the measurement of finance lease liability1.1 1.1 1.1 
Interest (net of amount capitalized)147.3 156.3 152.2 
Income taxes, net0.7 0.6 0.5 
Non-cash investing activities:   
Accounts payable and PPE47.7 44.4 19.4 
Right-of-use asset obtained in exchange for lease obligations3.4 0.2 13.1 
Gas stored underground and PPE47.8 — — 
 For the Year Ended December 31,
 2017 2016 2015
Cash paid during the period for:     
Interest (net of amount capitalized)$163.7
 $170.6
 $170.6
Income taxes, net0.5
 0.7
 0.3
Non-cash adjustments: 
  
  
Accounts payable and PPE58.8
 93.4
 54.7


72

76




Note 17:  Selected Quarterly Financial Data (Unaudited)

The following tables summarize selected quarterly financial data for 2017 and 2016 for the Partnership (in millions, except for earnings per unit):
 2017
 For the Quarter Ended:
 December 31 September 30 June 30 March 31
Operating revenues$337.5
 $300.5
 $317.6
 $367.0
Operating expenses213.8
 189.7
 250.4
 202.2
Operating income123.7
 110.8
 67.2
 164.8
Interest expense, net39.8
 41.0
 43.7
 46.1
Other income(0.4) (0.3) (0.6) (0.8)
Income before income taxes84.3
 70.1
 24.1
 119.5
Income taxes0.1
 0.3
 0.4
 0.2
Net income$84.2
 $69.8
 $23.7
 $119.3
  
  
  
  
Net income per common unit$0.33
 $0.27
 $0.09
 $0.47

 2016
 For the Quarter Ended:
 December 31 September 30 June 30 March 31
Operating revenues$352.6
 $303.3
 $306.3
 $345.0
Operating expenses219.7
 209.6
 197.0
 203.4
Operating income132.9
 93.7
 109.3
 141.6
Interest expense, net46.3
 48.3
 45.3
 42.5
Other income(1.8) (1.9) (1.9) (2.1)
Income before income taxes88.4
 47.3
 65.9
 101.2
Income taxes0.2
 
 0.2
 0.2
Net income$88.2
 $47.3
 $65.7
 $101.0
  
  
  
  
Net income per common unit$0.34
 $0.19
 $0.26
 $0.40



Note 18:  Guarantee of Securities of Subsidiaries

Boardwalk Pipelines (Subsidiary Issuer) has issued securities which have been fully and unconditionally guaranteed by the Partnership (Parent Guarantor). The Subsidiary Issuer is 100% owned by the Parent Guarantor. The Partnership's subsidiaries had no significant restrictions on their ability to pay distributions or make loans to the Partnership except as noted in the debt covenants and had no restricted assets at December 31, 2017 and 2016. Note 10 contains additional information regarding the Partnership's debt and related covenants.



Condensed Consolidating Balance Sheets as of December 31, 2017
(Millions)

Assets 
Parent
Guarantor
 
Subsidiary
 Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Cash and cash equivalents $0.3
 $4.6
 $12.7
 $
 $17.6
Receivables 
 
 133.4
 
 133.4
Receivables - affiliate 
 
 7.0
 (7.0) 
Gas and liquids stored underground 
 
 6.5
 
 6.5
Prepayments 0.1
 
 17.8
 
 17.9
Advances to affiliates 
 
 2.3
 (2.3) 
Other current assets 
 
 7.0
 (1.8) 5.2
Total current assets 0.4
 4.6
 186.7
 (11.1) 180.6
Investment in consolidated subsidiaries 2,672.3
 6,676.7
 
 (9,349.0) 
Property, plant and equipment, gross 0.6
 
 10,883.0
 
 10,883.6
Less–accumulated depreciation and
   amortization
 0.6
 
 2,620.5
 
 2,621.1
Property, plant and equipment, net 
 
 8,262.5
 
 8,262.5
Advances to affiliates – noncurrent 2,070.1
 923.7
 376.5
 (3,370.3) 
Other noncurrent assets 
 3.3
 460.5
 (0.3) 463.5
Total other assets 2,070.1
 927.0
 837.0
 (3,370.6) 463.5
  

 

 

 

 

Total Assets $4,742.8
 $7,608.3
 $9,286.2
 $(12,730.7) $8,906.6

Liabilities and Partners' Capital 
Parent
Guarantor
 
Subsidiary
 Issuer
 
Non-guarantor
Subsidiaries
 Eliminations Consolidated Boardwalk Pipeline Partners, LP
Payables $0.5
 $0.1
 $87.3
 $
 $87.9
Payable to affiliates 1.5
 
 7.0
 (7.0) 1.5
Advances from affiliates 
 2.3
 
 (2.3) 
Other current liabilities 
 25.2
 167.9
 (2.1) 191.0
Total current liabilities 2.0
 27.6
 262.2
 (11.4) 280.4
Long-term debt and capital lease
     obligation
 
 2,461.8
 1,225.0
 
 3,686.8
Payable to affiliate - noncurrent 16.0
 
 
 
 16.0
Advances from affiliates - noncurrent 
 2,446.6
 923.7
 (3,370.3) 
Other noncurrent liabilities 
 
 198.6
 
 198.6
     Total other liabilities and deferred
        credits
 16.0
 2,446.6
 1,122.3
 (3,370.3) 214.6
Total partners’ capital 4,724.8
 2,672.3
 6,676.7
 (9,349.0) 4,724.8
Total Liabilities and Partners'
    Capital
 $4,742.8
 $7,608.3
 $9,286.2
 $(12,730.7) $8,906.6



Condensed Consolidating Balance Sheets as of December 31, 2016
(Millions)

Assets 
Parent
Guarantor
 
Subsidiary
 Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Cash and cash equivalents $0.6
 $1.8
 $2.2
 $
 $4.6
Receivables 
 
 139.8
 
 139.8
Receivables - affiliate 
 
 7.0
 (7.0) 
Gas and liquids stored underground 
 
 1.3
 
 1.3
Prepayments 0.4
 
 17.3
 
 17.7
Advances to affiliates 
 72.9
 102.7
 (175.6) 
Other current assets 
 
 13.9
 (3.1) 10.8
Total current assets 1.0
 74.7
 284.2
 (185.7) 174.2
Investment in consolidated subsidiaries 2,423.2
 6,653.6
 
 (9,076.8) 
Property, plant and equipment, gross 0.6
 
 10,326.7
 
 10,327.3
Less–accumulated depreciation
   and amortization
 0.6
 
 2,333.2
 
 2,333.8
Property, plant and equipment, net 
 
 7,993.5
 
 7,993.5
Advances to affiliates – noncurrent 2,125.0
 435.0
 229.3
 (2,789.3) 
Other noncurrent assets 
 3.3
 466.8
 
 470.1
Total other assets 2,125.0
 438.3
 696.1
 (2,789.3) 470.1
  

 

 

 

 

Total Assets $4,549.2
 $7,166.6
 $8,973.8
 $(12,051.8) $8,637.8

Liabilities and Partners' Capital 
Parent
Guarantor
 
Subsidiary
 Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Payables $0.9
 $0.2
 $136.4
 $
 $137.5
Payable to affiliates 1.4
 
 7.0
 (7.0) 1.4
Advances from affiliates 
 102.7
 72.9
 (175.6) 
Other current liabilities 
 21.8
 175.3
 (3.1) 194.0
Total current liabilities 2.3
 124.7
 391.6
 (185.7) 332.9
Long-term debt and capital lease
    obligation
 
 2,264.4
 1,293.6
 
 3,558.0
Payable to affiliate - noncurrent 16.0
 
 
 
 16.0
Advances from affiliates - noncurrent 
 2,354.3
 435.0
 (2,789.3) 
Other noncurrent liabilities 
 
 200.0
 
 200.0
    Total other liabilities and deferred
        credits
 16.0
 2,354.3
 635.0
 (2,789.3) 216.0
Total partners’ capital 4,530.9
 2,423.2
 6,653.6
 (9,076.8) 4,530.9
Total Liabilities and Partners'
    Capital
 $4,549.2
 $7,166.6
 $8,973.8
 $(12,051.8) $8,637.8



Condensed Consolidating Statements of Income for the Year Ended December 31, 2017
(Millions)

 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Operating Revenues:         
Transportation$
 $
 $1,269.0
 $(88.3) $1,180.7
Parking and lending
 
 20.5
 (0.3) 20.2
Storage
 
 81.5
 
 81.5
Other
 
 40.2
 
 40.2
Total operating revenues
 
 1,411.2
 (88.6) 1,322.6
          
Operating Costs and Expenses: 
  
  
    
Fuel and transportation
 
 143.4
 (88.6) 54.8
Operation and maintenance
 
 204.2
 
 204.2
Administrative and general(0.3) 
 126.8
 
 126.5
Other operating costs and expenses0.6
 
 470.0
 
 470.6
Total operating costs and expenses0.3
 
 944.4
 (88.6) 856.1
Operating (loss) income(0.3) 
 466.8
 
 466.5
          
Other Deductions (Income): 
  
  
    
Interest expense
 129.6
 41.4
 
 171.0
Interest (income) expense-affiliates, net(47.3) 39.9
 7.4
 
 
Interest income
 (0.2) (0.2) 
 (0.4)
Equity in earnings of subsidiaries(250.0) (419.3) 
 669.3
 
Miscellaneous other income, net
 
 (2.1) 
 (2.1)
Total other (income) deductions(297.3) (250.0) 46.5
 669.3
 168.5
          
Income (loss) before income taxes297.0
 250.0
 420.3
 (669.3) 298.0
Income taxes
 
 1.0
 
 1.0
          
Net income (loss)$297.0
 $250.0
 $419.3
 $(669.3) $297.0



Condensed Consolidating Statements of Income for the Year Ended December 31, 2016
(Millions)

 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Operating Revenues:         
Transportation$
 $
 $1,230.2
 $(87.8) $1,142.4
Parking and lending
 
 20.1
 (1.9) 18.2
Storage
 
 91.4
 
 91.4
Other
 
 55.2
 
 55.2
Total operating revenues
 
 1,396.9
 (89.7) 1,307.2
 

 

 

 
 
Operating Costs and Expenses: 
  
  
    
Fuel and transportation
 
 160.5
 (89.7) 70.8
Operation and maintenance
 
 199.9
 
 199.9
Administrative and general0.5
 
 141.7
 
 142.2
Other operating costs and expenses0.4
 
 416.4
 
 416.8
Total operating costs and expenses0.9
 
 918.5
 (89.7) 829.7
Operating (loss) income(0.9) 
 478.4
 
 477.5
          
Other Deductions (Income): 
  
  
    
Interest expense
 123.8
 59.0
 
 182.8
Interest (income) expense - affiliates, net(37.8) 44.4
 (6.6) 
 
Interest income
 (0.1) (0.3) 
 (0.4)
Equity in earnings of subsidiaries(265.5) (433.6) 
 699.1
 
Miscellaneous other expense (income),
     net
0.2
 
 (7.9) 
 (7.7)
Total other (income) deductions(303.1) (265.5) 44.2
 699.1
 174.7
          
Income (loss) before income taxes302.2
 265.5
 434.2
 (699.1) 302.8
Income taxes
 
 0.6
 
 0.6
          
Net income (loss)$302.2
 $265.5
 $433.6
 $(699.1) $302.2



Condensed Consolidating Statements of Income for the Year Ended December 31, 2015
(Millions)

 
Parent
Guarantor
 
Subsidiary
 Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Operating Revenues:         
Transportation$
 $
 $1,178.5
 $(87.4) $1,091.1
Parking and lending
 
 11.6
 (0.2) 11.4
Storage
 
 81.3
 
 81.3
Other
 
 65.4
 
 65.4
Total operating revenues
 
 1,336.8
 (87.6) 1,249.2
          
Operating Costs and Expenses: 
  
  
  
  
Fuel and transportation
 
 186.9
 (87.6) 99.3
Operation and maintenance
 
 209.5
 
 209.5
Administrative and general
 
 130.4
 
 130.4
Other operating costs and expenses0.3
 
 413.9
 
 414.2
Total operating costs and expenses0.3
 
 940.7
 (87.6) 853.4
Operating (loss) income(0.3) 
 396.1
 
 395.8
          
Other Deductions (Income): 
  
  
  
  
Interest expense
 104.0
 72.4
 
 176.4
Interest (income) expense - affiliates, net(28.8) 38.2
 (9.4) 
 
Interest income
 
 (0.4) 
 (0.4)
Equity in earnings of subsidiaries(193.5) (335.7) 
 529.2
 
Miscellaneous other income, net
 
 (2.7) 
 (2.7)
Total other (income) deductions(222.3) (193.5) 59.9
 529.2
 173.3
          
Income (loss) before income taxes222.0
 193.5
 336.2
 (529.2) 222.5
Income taxes
 
 0.5
 
 0.5
          
Net income (loss)$222.0
 $193.5
 $335.7
 $(529.2) $222.0






Condensed Consolidating Statements of Comprehensive Income for the Year Ended December 31, 2017
(Millions)

 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net income (loss)$297.0
 $250.0
 $419.3
 $(669.3) $297.0
Other comprehensive income (loss): 
  
  
    
Loss on cash flow hedge(1.5) (1.5) 
 1.5
 (1.5)
Reclassification adjustment transferred to
    Net income from cash flow hedges
2.5
 2.5
 0.7
 (3.2) 2.5
Pension and other postretirement
    benefit costs
(1.9) (1.9) (1.9) 3.8
 (1.9)
Total Comprehensive Income (Loss)$296.1
 $249.1
 $418.1
 $(667.2) $296.1







Condensed Consolidating Statements of Comprehensive Income for the Year Ended December 31, 2016
(Millions)

 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net income (loss)$302.2
 $265.5
 $433.6
 $(699.1) $302.2
Other comprehensive income (loss):

 

 

 
 
Reclassification adjustment transferred to
    Net income from cash flow hedges
2.4
 2.4
 0.7
 (3.1) 2.4
Pension and other postretirement
    benefit costs
1.8
 1.8
 1.8
 (3.6) 1.8
Total Comprehensive Income (Loss)$306.4
 $269.7
 $436.1
 $(705.8) $306.4






Condensed Consolidating Statements of Comprehensive Income for the Year Ended December 31, 2015
(Millions)

 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net income (loss)$222.0
 $193.5
 $335.7
 $(529.2) $222.0
Other comprehensive income (loss): 
  
  
    
Reclassification adjustment transferred to
    Net Income from cash flow hedges
2.4
 2.4
 0.7
 (3.1) 2.4
Pension and other postretirement
    benefit costs
(13.9) (13.9) (13.9) 27.8
 (13.9)
Total Comprehensive Income (Loss)$210.5
 $182.0
 $322.5
 $(504.5) $210.5









































Condensed Consolidating Statements of Cash Flow for the Year Ended December 31, 2017
(Millions)
 
Parent
Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net cash provided by (used in)
   operating activities
$46.9
 $(161.5) $751.6
 $
 $637.0
          
INVESTING ACTIVITIES: 
  
  
  
  
Capital expenditures
 
 (708.4) 
 (708.4)
Proceeds from sale of operating assets
 
 63.8
 
 63.8
Advances to affiliates, net54.9
 (434.4) (460.4) 839.9
 
Net cash provided by (used in)
   investing activities
54.9
 (434.4) (1,105.0) 839.9
 (644.6)
          
FINANCING ACTIVITIES: 
  
  
  
  
Proceeds from long-term debt, net of
issuance cost

 494.0
 
 
 494.0
Repayment of borrowings from long-term
debt


 (300.0) (275.0) 
 (575.0)
Proceeds from borrowings on revolving
   credit agreement

 
 765.0
 
 765.0
Repayment of borrowings on revolving
 credit agreement, including financing fees

 (0.8) (560.0) 
 (560.8)
Principal payment of capital lease
    obligation

 
 (0.5) 
 (0.5)
Advances from affiliates, net0.1
 405.5
 434.4
 (839.9) 0.1
Distributions paid(102.2) 
 
 
 (102.2)
Net cash (used in) provided by
  financing activities
(102.1) 598.7
 363.9
 (839.9) 20.6
          
(Decrease) increase in cash and
  cash equivalents
(0.3) 2.8
 10.5
 
 13.0
Cash and cash equivalents at
   beginning of period
0.6
 1.8
 2.2
 
 4.6
Cash and cash equivalents at
   end of period
$0.3
 $4.6
 $12.7
 $
 $17.6



Condensed Consolidating Statements of Cash Flow for the Year Ended December 31, 2016
(Millions)
 
Parent
Guarantor
 
Subsidiary
 Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net cash provided by (used in)
  operating activities
$37.3
 $(161.9) $725.4
 $
 $600.8
          
INVESTING ACTIVITIES: 
  
    
  
Capital expenditures
 
 (590.4) 
 (590.4)
Proceeds from sale of operating assets
 
 0.2
 
 0.2
Advances to affiliates, net65.2
 (20.6) 39.1
 (83.7) 
Net cash provided by (used in)
  investing activities
65.2
 (20.6) (551.1) (83.7) (590.2)
          
FINANCING ACTIVITIES: 
  
    
  
Proceeds from long-term debt, net of
    issuance cost

 539.1
 
 
 539.1
Repayment of borrowings from long-term
    debt

 (250.0) 
 
 (250.0)
Proceeds from borrowings on revolving
   credit agreement

 
 490.0
 
 490.0
Repayment of borrowings on revolving
    credit agreement, including financing
    fees

 (0.8) (685.0) 
 (685.8)
Principal payment of capital lease
    obligation

 
 (0.5) 
 (0.5)
Advances from affiliates, net0.3
 (104.3) 20.6
 83.7
 0.3
Distributions paid(102.2) 
 
 
 (102.2)
Net cash (used in) provided by
   financing activities
(101.9) 184.0
 (174.9) 83.7
 (9.1)
          
Increase (decrease) in cash and cash
   equivalents
0.6
 1.5
 (0.6) 
 1.5
Cash and cash equivalents at
   beginning of period

 0.3
 2.8
 
 3.1
Cash and cash equivalents at
   end of period
$0.6
 $1.8
 $2.2
 $
 $4.6



Condensed Consolidating Statements of Cash Flow for the Year Ended December 31, 2015
(Millions)

 
Parent
 Guarantor
 
Subsidiary
Issuer
 Non-guarantor Subsidiaries Eliminations Consolidated Boardwalk Pipeline Partners, LP
Net cash provided by (used in)
  operating activities
$27.9
 $(136.3) $684.8
 $
 $576.4
          
INVESTING ACTIVITIES: 
  
  
  
  
Capital expenditures(1.0) 
 (373.5) 
 (374.5)
Proceeds from sale of operating assets
 
 0.8
 
 0.8
Proceeds from other recoveries
 
 6.2
 
 6.2
Advances to affiliates, net(41.9) (269.0) (118.4) 429.3
 
Net cash (used in) provided by
  investing activities
(42.9) (269.0) (484.9) 429.3
 (367.5)
          
FINANCING ACTIVITIES: 
  
  
  
  
Proceeds from long-term debt, net of
issuance cost

 247.1
 
 
 247.1
Repayment of borrowings from long-term
   debt and term loan

 
 (725.0) 
 (725.0)
Proceeds from borrowings on revolving
   credit agreement

 
 1,125.0
 
 1,125.0
Repayment of borrowings on revolving
   credit agreement, including financing
   fees

 (3.6) (870.0) 
 (873.6)
Principal payment of capital lease
   obligation

 
 (0.4) 
 (0.4)
Advances from affiliates, net0.6
 160.3
 269.0
 (429.3) 0.6
Distributions paid(101.5) 
 
 
 (101.5)
Proceeds from sale of common units113.1
 
 
 
 113.1
Capital contributions from general
   partner
2.3
 
 
 
 2.3
Net cash provided by (used in)
   financing activities
14.5
 403.8
 (201.4) (429.3) (212.4)
          
Decrease in cash and cash
  equivalents
(0.5) (1.5) (1.5) 
 (3.5)
Cash and cash equivalents at
   beginning of period
0.5
 1.8
 4.3
 
 6.6
Cash and cash equivalents at
   end of period
$
 $0.3
 $2.8
 $
 $3.1



88



Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Disclosure Controls and ProceduresProcedures

As required by Rule 13a-15(b) of the Exchange Act, we have evaluated, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Report.Annual Report on Form 10-K. Our disclosure controls and procedures are designed to allow timely decisions regarding required disclosure and to provide reasonable assurance that the information required to be disclosed by us in reports that we file under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based upon the evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective as of December 31, 2017,2023, at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the quarter ended December 31, 2017,2023, that have materially affected or that are reasonably likely to materially affect our internal control over financial reporting. 

Management’sManagement's Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting for us. Our internal control system was designed to provide reasonable assurance regarding the preparation and fair presentation of our published financial statements.

There are inherent limitations to the effectiveness of any control system, however well designed, including the possibility of human error and the possible circumvention or overriding of controls. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Management must make judgments with respect to the relative cost and expected benefits of any specific control measure. The design of a control system also is based in part upon assumptions and judgments made by management about the likelihood of future events, and there can be no assurance that a control will be effective under all potential future conditions. As a result, even an effective system of internal control over financial reporting can provide no more than reasonable assurance with respect to the fair presentation of financial statements and the processes under which they were prepared.

Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2017.2023. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control – Integrated Framework (2013). Based on this assessment, our management believes that, as of December 31, 2017,2023, our internal control over financial reporting was effective. Deloitte & Touche LLP, the independent registered public accounting firm


Item 9B. Other Information

Not applicable.


Item 9C. Disclosure Regarding Foreign Jurisdictions that audited our financial statements included in Item 8 of this Report, has issued a report on our internal control over financial reporting.Prevent Inspections




REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of Boardwalk GP, LLC
and the Partners of Boardwalk Pipeline Partners, LP

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Boardwalk Pipeline Partners, LP and subsidiaries (the “Partnership”) as of December 31, 2017, based on criteria established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on the criteria established in Internal Control-Integrated Framework (2013) issued by COSO.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2017, of the Partnership and our report dated February 15, 2018 expressed an unqualified opinion on those financial statements.

Basis for Opinion
The Partnership’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Partnership’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Partnership in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.


/s/ Deloitte & Touche LLP
Houston, Texas
February 15, 2018

Not applicable.
90
73




PART III


Item 10.Directors, Executive Officers and Corporate Governance

Management of Boardwalk Pipeline Partners, LP

Boardwalk GP manages our operations and activities on our behalf. The operations of Boardwalk GP are managed by its general partner, Boardwalk GP, LLC (BGL). We sometimes refer to Boardwalk GP and BGL collectively as “our general partner.” Our general partner is not elected by unitholders and is not subject to re-election on a regular basis in the future. Unitholders are not entitled to elect the directors of our general partner or directly or indirectly participate in our management or operations. Our general partner owes a fiduciary duty to our unitholders. Our general partner is liable, as general partner, for all of our debts (to the extent not paid from our assets), except for indebtedness or other obligations that are made specifically nonrecourse to it. Whenever possible, our general partner intends that indebtedness or other obligations we incur are nonrecourse to it.

Whenever our general partner makes a determination or takes or declines to take an action in its individual, rather than representative, capacity, it is entitled to make such determination or to take or decline to take such other action free of any fiduciary duty or obligation to any limited partner and is not required to act in good faith or pursuant to any other standard imposed by our partnership agreement or under any law. Examples include the exercise of its limited call rights on our units, as provided in our partnership agreement, its voting rights with respect to the units it owns, its registration rights and its determination whether or not to consent to any merger or consolidation of the Partnership, all of which are described in our partnership agreement. Actions of our general partner made in its individual capacity will be made by BPHC, the sole member of BGL, rather than by our Board.

BGL has a board of directors that oversees our management, operations and activities. We refer to the board of directors of BGL, the members of which are appointed by BPHC, as our Board. BPHC does not apply a formal diversity policy or set of guidelines in selecting and appointing directors that comprise the Board. However, when appointing new directors, BPHC does consider each individual director’s qualifications, skills, business experience and capacity to serve as a director, as described below for each director, and the diversity of these attributes for the Board as a whole.

Directors and Executive Officers

The following table shows information for the directors and executive officers of BGL:
NameAgePosition
Stanley C. Horton68Chief Executive Officer (CEO), President and Director
Jamie L. Buskill53Senior Vice President, Chief Financial and Administrative Officer and Treasurer
Michael E. McMahon62Senior Vice President, General Counsel and Secretary
John L. Haynes63Senior Vice President, Chief Commercial Officer and President, Texas Intrastate
Kenneth I. Siegel60Director, Chairman of the Board
Arthur L. Rebell77Director
William R. Cordes69Director
Thomas E. Hyland72Director
Mark L. Shapiro73Director
Andrew H. Tisch68Director
Peter W. Keegan73Director

All directors have served since prior to 2010 except for Messrs. Keegan
We are omitting disclosure under this item because we meet the conditions set forth in General Instructions I(1) (a) and Horton who were elected to the Board in 2015 and 2011, respectively. All directors serve until replaced or upon their voluntary resignation. On March 31, 2017, Mr. Jonathan Nathanson retired from his position as Senior Vice President, Corporate Development. (b) of Form 10-KEffective February 2, 2017, Mr. John L. Haynes, Senior Vice President, Chief Commercial Officer and President, Texas Intrastate, was appointed an executive officer by our Board..

Stanley C. Horton—Mr. Horton has been the President and CEO of BGL since May 2011. Prior thereto he was an independent energy consultant providing consulting services to clients in both Europe and the U.S. From 2005 to 2008, Mr. Horton served as President and Chief Operating Officer of Cheniere Energy, Inc. From 2003 to 2005, he served as President and Chief Operating Officer of subsidiaries of Southern Union, including Panhandle Energy and CrossCountry Energy Services LLC. From 2001 to 2003, Mr. Horton served as Chairman and CEO of Enron Global Services. He has chaired the Gas Industry Standards Board, the


Interstate Natural Gas Association of America (INGAA) and the Natural Gas Council. Mr. Horton also served on the board of directors for SemGroup Corporation from November 2009 until his resignation effective May 2, 2011. Mr. Horton was selected to serve as a director due to his extensive experience in the natural gas industry and his position with the Registrant. He brings substantial operational experience gained from his executive-level leadership history and the perspective of a former CEO.

Jamie L. Buskill—Mr. Buskill was named Senior Vice President, Chief Financial and Administrative Officer and Treasurer of BGL during 2012. Previously he had been the Senior Vice President, Chief Financial Officer (CFO) and Treasurer of BGL since its inception in 2005 and served in the same capacity for the predecessor of BGL since May 2003. He has served in various management roles for Texas Gas since 1986. In 2017, Mr. Buskill was appointed to the board of directors of the Master Limited Partnership Association and also serves on the board of various charitable organizations.

Michael E. McMahon—Mr. McMahon has been the Senior Vice President, General Counsel and Secretary of BGL since February 2007. Prior thereto he served as Senior Vice President and General Counsel of Gulf South since 2001. Mr. McMahon has been employed by Gulf South or its predecessors since 1989. Mr. McMahon also serves on the legal committee and the board of directors of the INGAA.

John L. Haynes—Mr. Haynes serves as Senior Vice President, Chief Commercial Officer of BGL and President of Texas Intrastate. He has been responsible for the commercial and marketing functions for BGL's natural gas transportation and storage businesses since February 2009 and has been President of Texas Intrastate since January 2014. Mr. Haynes previously served as Senior Vice President of Business Development of BGL. Prior to joining BGL, Mr. Haynes held various commercial, planning and business development management positions within the natural gas pipeline industry.

Kenneth I. Siegel—Mr. Siegel has been employed as a Senior Vice President of Loews since June 2009. From 2008 to 2009 he was employed as a senior investment banker at Barclay’s Capital and from September 2000 to 2008 he was employed in a similar capacity at Lehman Brothers. Mr. Siegel was selected to serve as a director on our Board due to his valuable financial expertise, including extensive experience with capital markets transactions, knowledge of the energy industry and his familiarity with the Partnership due to his role in providing investment banking advice to the Partnership during his prior employment at Barclay’s Capital and Lehman Brothers.

Arthur L. Rebell—Mr. Rebell was a Senior Vice President of Loews from 1998 until his retirement in June 2010. Mr. Rebell was selected to serve as a director on our Board due to his judgment in assessing business strategies taking into account any accompanying risks, his knowledge of finance, mergers and acquisitions and the energy industry and his familiarity with the Partnership due to his role as a member of the Loews team responsible for the acquisitions of Gulf South and Texas Gas and the formation of the Partnership.

William R. Cordes—Mr. Cordes retired as President of Northern Border Pipeline Company in April 2007 after serving as President from October 2000 to April 2007. He also served as CEO of Northern Border Partners, LP from October 2000 to April 2006. Prior to that, he served as President of Northern Natural Gas Company from 1993 to 2000 and President of Transwestern Pipeline Company from 1996 to 2000. Mr. Cordes has more than 35 years of experience working in the natural gas industry. Mr. Cordes is also a member of the board of Kayne Anderson Energy Development Company and Kayne Anderson Midstream Energy Fund, Inc. Mr. Cordes brings to the Board significant pipeline industry experience as well as his extensive business and management expertise from his background as CEO and president of several public companies.

Thomas E. Hyland—Mr. Hyland was a partner in the global accounting firm of PricewaterhouseCoopers, LLP from 1980 until his retirement in July 2005. Mr. Hyland was selected to serve as a director on our Board due to his extensive background in public accounting and auditing, which also qualifies him as an “audit committee financial expert” under SEC guidelines.

Mark L. Shapiro—Mr. Shapiro has been a private investor since 1998. From July 1997 through August 1998, Mr. Shapiro was a Senior Consultant to the Export-Import Bank of the U.S. Prior to that position, he was a Managing Director in the investment banking firm of Schroder & Co. Inc. Mr. Shapiro also serves as a director for W.R. Berkley Corporation. Mr. Shapiro was selected to serve as a director on our Board due to his extensive knowledge and experience in corporate finance, acquisitions and financial matters from his career in investment banking.

Andrew H. Tisch—Mr. Tisch has been Co-Chairman of the Board of Directors of Loews since January 2006. He is also Chairman of the Executive Committee and a member of the Office of the President of Loews and has been a director of Loews since 1985. Mr. Tisch also serves as a director of CNA Financial Corporation, a subsidiary of Loews, and served as director of K12 Inc. from 2001 to 2017. Mr. Tisch’s qualifications to sit on our Board include his extensive experience on the board of our parent company, his extensive leadership skills and keen business and financial judgment, as well as his role in forming the Partnership.



Peter W. Keegan—Mr. Keegan was Senior Vice President and CFO of Loews from 1997 until his retirement in May 2014 and is currently Senior Advisor to Loews. Prior to joining Loews, Mr. Keegan served as Executive Vice President and CFO of CBS Inc. Mr. Keegan was selected to serve as a director on our Board due to his familiarity with the Partnership, his experience as a senior leader at large public companies and his knowledge of finance and accounting matters.

Our Independent Directors

Our Board has determined that Thomas E. Hyland, Mark L. Shapiro, Arthur L. Rebell and William R. Cordes are independent directors under the listing standards of the NYSE. Our Board considered all relevant facts and circumstances and applied the independence guidelines described below in determining that none of these directors has any material relationship with us, our management, our general partner or its affiliates or our subsidiaries.

Our Board has established guidelines to assist it in determining director independence. Under these guidelines, a director would not be considered independent if any of the following relationships exists:
(i)during the past three years the director has been an employee, or an immediate family member has been an executive officer, of us;
(ii)the director or an immediate family member received, during any twelve month period within the past three years, more than $120,000 per year in direct compensation from us, excluding director and committee fees, pension payments and certain forms of deferred compensation;
(iii)the director is a current partner or employee or an immediate family member is a current partner of a firm that is our internal or external auditor, or an immediate family member is a current employee of such a firm and personally works on our audit, or, within the last three years, the director or an immediate family member was a partner employee of such a firm and personally worked on our audit within that time;
(iv)the director or an immediate family member has at any time during the past three years been employed as an executive officer of another company where any of our present executive officers at the same time serves or served on that company’s compensation committee; or
(v)the director is a current employee, or an immediate family member is a current executive officer, of a company that has made payments to, or received payments from, us for property or services in an amount which, in any of the last three years, exceeds the greater of $1.0 million, or 2% of the other company’s consolidated gross revenues.

Our Board is comprised of a majority of independent directors and our Audit Committee is comprised solely of independent directors. The NYSE does not require a listed limited partnership, or a listed company that is majority-owned by another listed company, such as us, to maintain a compensation or nominating/corporate governance committee. In reliance on this exemption, we do not maintain a compensation or nominating/corporate governance committee.

Audit Committee

We have established a separately-designated standing audit committee in accordance with SEC rules. Our Board’s Audit Committee presently consists of Thomas E. Hyland, Chairman, Mark L. Shapiro and William R. Cordes, each of whom is an independent director and satisfies the additional independence and other requirements for Audit Committee members provided for in the listing standards of the NYSE. The Board of Directors has determined that Mr. Hyland qualifies as an “audit committee financial expert” under SEC rules.

The primary function of the Audit Committee is to assist our Board in fulfilling its responsibility to oversee management’s conduct of our financial reporting process, including review of our financial reports and other financial information, our system of internal accounting controls, our compliance with legal and regulatory requirements, the qualifications and independence of our independent registered public accounting firm (independent auditors) and the performance of our internal audit function and independent auditors. The Audit Committee has sole authority to appoint, retain, compensate, evaluate and terminate our independent auditors and to approve all engagement fees and terms for our independent auditors.

Conflicts Committee

Under our partnership agreement, our Board must have a Conflicts Committee consisting of two or more independent directors. Our Conflicts Committee presently consists of Mark L. Shapiro, Chairman, Thomas E. Hyland and William R. Cordes. The primary function of the Conflicts Committee is to determine if the resolution of any conflict of interest with our general partner


or its affiliates is fair and reasonable. Any matters approved by the Conflicts Committee will be conclusively deemed to be fair and reasonable, approved by all of the partners and not a breach by our general partner of any duties it may owe to our unitholders.

Executive Sessions of Non-Management Directors

Our Board’s non-management directors, from time to time as such directors deem necessary or appropriate, meet in executive sessions without management participation, with the Chairman of the Board presiding over these meetings. Unless otherwise designated by the Chairman of the Board, the Chairman of the Audit Committee or the Chairman of the Conflicts Committee would serve as the presiding director at these meetings if the Chairman of the Board was not participating.

Governance Structure and Risk Management

Our principal executive officer and Board chairman positions are held by separate individuals. We have taken this position to achieve an appropriate balance with regard to oversight of company and unitholder interests, Board member independence, power and guidance for the principal executive officer regarding business strategy, opportunities and risks.

Our Board is engaged in the oversight of risk through regular updates from Mr. Horton, in his role as our CEO, and other members of our management team, regarding those risks confronting us, the actions and strategies necessary to mitigate those risks and the status and effectiveness of those actions and strategies. The updates are provided at quarterly Board and Audit Committee meetings as well as through more frequent meetings that include the Board Chairman, other members of our Board, the CEO and members of our management team. The Board provides insight into the issues, based on the experience of its members, and provides constructive challenges to management’s assumptions and assertions.

Corporate Governance Guidelines and Code of Business Conduct and Ethics

Our Board has adopted Corporate Governance Guidelines to guide it in its operation and a Code of Business Conduct and Ethics applicable to all of the officers and directors of BGL, including the principal executive officer, principal financial officer, principal accounting officer, and all of the directors, officers and employees of our subsidiaries. The Corporate Governance Guidelines and Code of Business Conduct and Ethics can be found within the “Governance” section of our website, located at www.bwpmlp.com. We intend to post changes to or waivers of this Code for BGL’s principal executive officer, principal financial officer and principal accounting officer on our website.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16 of the Exchange Act requires our directors and executive officers, and persons who own more than 10% of a registered class of our equity securities, to file initial reports of ownership and reports of changes in ownership with the SEC. Such persons are required by SEC regulation to furnish us with copies of all Section 16(a) forms they file. Based solely on our review of the copies of such forms furnished to us and written representations from our executive officers and directors, we believe that all Section 16(a) filing requirements were met during 2017 in a timely manner with the exception of the Form 3 filing for Mr. Haynes.


94



Item 11. Executive Compensation

Compensation Discussion and Analysis

Executive Summary

The objective of our executive compensation program is to attract and retain highly qualified executive officers and motivate them to provide a high level of performance for our Partnership. To meet this objective, we have established a compensation policy for our executive officers which offers elements of base salary, cash incentives, equity-based incentives and retirement and other benefits. Our strategy is to combine these elements at levels that provide our Named Executive Officers (as identified below) compensation that is competitive with that offered at similar companies in the energy industry, with particular emphasis on retention and rewarding performance by offering short and long-term incentive-based compensation. As determined annually by our Board of Directors (Board), the Named Executive Officers that are discussed within this section for 2017 include Mr. Stanley C. Horton, our President, Chief Executive Officer (CEO) and a director of Boardwalk GP, LLC (principal executive officer), Mr. Jamie L. Buskill, our Senior Vice President, Chief Financial and Administrative Officer and Treasurer (CFO) (principal financial officer), and our two other executive officers, Mr. Michael E. McMahon, Senior Vice President, General Counsel and Secretary and Mr. John L. Haynes, Senior Vice President, Chief Commercial Officer and President, Boardwalk Texas Intrastate, LLC.

We consider a number of factors in making our determinations of executive compensation, including compensation paid in prior years, whether the Partnership's financial, operating and growth objectives were achieved and the individual contributions of each executive officer to our overall business success for the year. As described below, we have periodically used, and may use in the future, executive compensation surveys as general guidelines for setting total executive compensation, but we do not benchmark our compensation to any particular group of companies.

InWe are omitting disclosure under this item because we meet the developmentconditions set forth in General Instructions I(1) (a) and (b) of our executive compensation programs, we have considered the compensation programs of various companies engaged in similar businesses with similar corporate structures to obtain a general understanding of compensation practices and industry trends. We have also considered the historical compensation policies and practices of our operating subsidiaries and, as discussed below under Risk Assessment, whether our compensation policies and practices could possibly introduce material risks to our business. In addition, in light of our structure as a publicly traded partnership, we have considered the applicable tax and accounting impacts of executive compensation, including the tax implications of providing equity-based compensation to our employees, all of whom are employed by our operating subsidiaries.

As discussed above, our compensation policy includes offering cash incentives as reward for performance. Annual bonus awards are a component of that policy. The annual bonus awards for 2017 were determined after we reviewed both the performance of our Partnership and the individual performance of each of the Named Executive Officers. With respect to Partnership performance, our 2017 results, which significantly impacted the Board’s compensation decisions, included the following:
we had no material safety or pipeline deliverability issues and we were in compliance with all federal, state and local laws, rules and regulations;
we exceeded EBITDA and distributable cash flow amounts included in our plan, excluding the impacts from the sale of the Flag City processing plant and related assets discussed below;
we continued to take steps to enhance the Partnership’s financing options, including refinancing expiring, fixed-rate notes and extending the term of our Revolving Credit Agreement;
we improved our pipeline and storage assets through numerous reliability initiatives;
we reduced our recontracting risk by restructuring contracts with a key customer on our Fayetteville and Greenville laterals;
we sold the Flag City Processing Partners, LLC subsidiary, which owned the Flag City processing plant, and related assets, to a third party in order to pursue other strategic opportunities in South Texas;
we placed into service a major growth project and portions of other growth projects, which collectively, were on-time and under budget, and our other growth projects are progressing as contemplated and remain on target and on budget; and
we continued to work on strengthening our balance sheet by funding growth projects with internally generated cash flows, and we completed 2017 with a debt to EBITDA ratio of approximately 4.70x and maintained investment grade debt ratings by the three major rating agencies.



Based on these results and the leadership, performance and efforts of each of the Named Executive Officers toward the achievement of these results, the Board awarded to the Named Executive Officers individual annual cash bonus amounts that, on a combined basis, were higher than the target amounts set for 2017.

As discussed elsewhere in this Report, our Board does not have a Compensation Committee. Therefore, the compensation for our Named Executive Officers, is reviewed with and is subject to the approval of our entire Board, with Mr. Horton not participating in those Board discussions with respect to his own compensation.

Compensation Philosophy

Our compensation philosophy is to reward our Named Executive Officers for achieving Partnership and individual performance objectives, align the interests of the Named Executive Officers with the interests of the Partnership and unitholders and provide competitive pay to attract and retain top talent.

Compensation Program Objectives

The objectives of our compensation program are to:

Attract, motivate and retain highly qualified Named Executive Officers with market-competitive compensation; 
Create a strong link between pay and performance (both Partnership and individual performance);
Motivate the Named Executive Officers to achieve both short and long-term Partnership goals;
Align interests of Named Executive Officers with the interests of the Partnership; and
Encourage prudent business behavior and minimize inappropriate risk taking.


Compensation Program Elements

The following are the principal components of compensation for each of our Named Executive Officers:
Compensation
 Element
ObjectivesDesign Elements
Base Salary*Attract and retain executives by providing compensation comparable with similar positions in the industry.*Base salary levels are reviewed annually and may be adjusted based both on individual performance and market competitiveness of total direct compensation (which is the sum of base salary, short-term incentive awards and long-term incentive awards).
Short-Term Incentive Award*Drive annual business performance by rewarding achievement of Partnership objectives.*Awards are comprised of annual cash bonus awards (STI Awards) under our Short-Term Incentive Plan (STIP).
*Drive individual performance by including an individual performance component.*
Payout of awards can range from 0% to 200% of target, at the discretion of the Board, based both on Partnership and individual performance, with equal weighting on both.

*Attract talent by providing competitive short-term cash incentive targets.*Target levels are reviewed annually and may be adjusted based on market competitiveness of total direct compensation.
*Reinforce corporate values of safety and compliance as Partnership objectives.
Long-Term Incentive Award*Attract and retain talent, motivate top performance and provide opportunity to share in long-term success of the Partnership.*Awards can consist of a combination of or any one of the following: phantom common units (Phantom Common Units) under our Long-Term Incentive Plan (LTIP) and long-term cash bonuses (Long-Term Cash Bonus) under our Unit Appreciation Rights and Cash Bonus Plan (UAR and Cash Bonus Plan).
*Minimize inappropriate risk-taking by providing the appropriate mix of award types.*
Longer vesting periods achieve retention objectives and discourage unreasonable risk taking for short-term gain.

*Drive long-term business performance by aligning reward with common unit price, appreciation in common unit price and distributions to unitholders.*Phantom Common Units encourage retention and facilitate alignment with unitholder interests.
*Drive individual performance by setting grant levels based on individual performance.*Long-Term Cash Bonus awards support retention of executives and provide our Board flexibility to mix equity-based and non-equity-based long-term compensation to support its objectives.
*Mix of award types is reviewed annually.
*Award levels are reviewed annually and are based on individual performance and market competitiveness of total direct compensation.
Benefits*Attract and retain executives by providing market competitive benefits.*Reviewed annually to ensure competitiveness.

Market Analysis

When determining the appropriate amounts of individual compensation components, the Board considers a number of factors, including the individual officer’s skills, experience and responsibilities, the amounts of current and prior compensation as well as the appropriate amounts necessary to further our retention efforts. We do not determine compensation by benchmarking, or targeting our compensation to fall within a specific percentile of compensation as reported in compensation surveys. However, as described above, a key objective of our Compensation program is to maintain market competitiveness in order to attract and retain executives with the ability and experience necessary to provide leadership and strong performance for the Partnership. Therefore, from time to time, we may review market compensation data to assess the reasonableness of our compensation practices.



With respect to our 2017 compensation decisions, we used the 2017 Willis Towers Watson U.S. Compensation Data Bank Energy Services Executive Compensation Survey (Willis Towers Watson) and the 2017 US Mercer Total Compensation Survey for the Energy Sector (Mercer) to conduct a market-based review of total direct compensation, which we define as the sum of base salary, short-term incentives and long-term incentives. The compensation survey data we reviewed was a compilation of approximately 400 companies that are engaged in various segments of the energy industry.
Our general objective was to assess each officer’s total direct compensation for reasonableness in relation to the median amount for similarly situated officers. We did not set specific target percentiles for either total direct compensation or the individual compensation components, and we determined a median market total direct compensation amount for each officer position.

When making compensation decisions, the Board considers all information available, including the factors listed above, with the final amounts of compensation to be ultimately determined at the discretion of the Board. This process allows us to achieve our primary objective of maintaining competitive compensation to ensure retention and rewarding the achievement of the Partnership's objectives to align with the interests of unitholders.

The following discussion addresses each of the individual components of compensation for our Named Executive Officers.

Compensation Attributable to the 2017 Calendar Year

The Board approved short-term and long-term incentive awards in 2018, which it considers to be related to 2017, even though the long-term incentive awards will not be reported in the Summary Compensation Table until 2018 or later, depending on the type of award. We consider compensation attributable to the 2017 calendar year to include the base salary paid during 2017, STI Awards awarded and paid in early 2018, but related to results achieved in 2017, and Long-Term Incentive Awards granted in early February 2018, but related to the results achieved in 2017. The table below summarizes the compensation for our Named Executive Officers that we consider to be related to the 2017 calendar year. The amounts reported below differ from those reported in the Summary Compensation Table due solely to the disclosure rules regarding the timing of reporting certain elements of compensation.
 Name 
2017 Base Salary (1)
 
STI Bonus Paid in
2018 for the 2017
 Calendar Year
 
Long-Term Cash Bonus Granted in 2018 for the 2017 Calendar Year (2)
 
Grant Date Fair Value for Long-Term Incentive Plan Awards granted in 2018 for the 2017 Calendar Year (3)
 Total
 
 Stanley C. Horton $850,018 $1,171,000 $521,250 $1,418,477 $3,960,745
 Jamie L. Buskill $450,008 $550,000 $150,000 $408,196 $1,558,204
 Michael E. McMahon $326,808 $400,000 $143,750 $391,190 $1,261,748
 John L. Haynes $326,808 $400,000 $143,750 $391,190 $1,261,748

(1)Represents the base salary for Messrs. Horton and Buskill for the entire year. Messrs. McMahon and Haynes’s base salaries were each increased by approximately 7% effective February 20, 2017.
(2)Represents Long-Term Cash Bonuses granted under our UAR and Cash Bonus Plan on February 8, 2018.
(3)
Represents the grant date fair value of the Phantom Common Units granted under our LTIP on February 8, 2018. Messrs. Horton, Buskill, McMahon and Haynes were granted 118,108, 33,988, 32,572 and 32,572 units. The fair value of each unit was derived based on the closing price of $12.01 for the Partnership's common units on the NYSE on February 7, 2018. Refer to Long-Term Incentive Awards – Phantom Common Units for further discussion regarding the Phantom Common Units.

For compensation attributable to the 2017 calendar year, approximately 76% of the total direct compensation awarded to our Named Executive Officers was based on incentive-based compensation elements, the majority of which was comprised of long-term, incentive-based compensation.



Base Salary

We provide our Named Executive Officers with an annual base salary to compensate them for services rendered during the year. Our goal is to set base salaries for our Named Executive Officers at levels that make total direct compensation competitive with comparable companies for the skills, experience and requirements of similar positions in order to attract and retain top talent. In each year, the market competitiveness of the total direct compensation for our Named Executive Officers is reviewed. Messrs. McMahon and Haynes each received an increase in their base salaries of approximately 3% effective February 22, 2016, consistent with the average base salary merit increase for all other employees, and received an approximately 7% increase in their base salaries effective February 20, 2017, in order to better align their total direct compensation with that of their peers and with the market data. No changes were made to the base salaries of Messrs. Horton and Buskill in 2017. Mr. Horton last received a base salary increase in 2015 and Mr. Buskill received a base salary increase in 2016.
Incentive Compensation

The Board considers incentive compensation awards paid or granted in early 2018 to be related to 2017 performance even though the awards will not be reported in the Summary Compensation Table and other compensation tables until 2018 or later, depending on the type of award. Our incentive compensation program is comprised of several components:
annual cash bonus awards under our STIP;
long-term, equity-based awards under our LTIP; and
Long-Term Cash Bonuses under our UAR and Cash Bonus Plan.

Our goal is to set incentive target awards at levels that make total direct compensation competitive with comparable companies for the skills, experience and requirements of similar positions in order to attract and retain top talent. The incentive target awards can differ from actual awards as a result of Partnership and/or individual performance, but the actual payout of any award is determined at the sole discretion of the Board.

In determining the amount of any incentive awards, the Board considers factors that include its view of our financial and operational performance for the most recently completed fiscal year, the performance of the individual, the responsibilities of the individual’s position and the individual’s contribution to our Partnership. The Board also gives consideration to external factors and market conditions experienced by the Partnership impacting its business. Except with regard to STI Awards made under the STIP, there is no specific weight assigned to any factor. Instead, the Board considers and balances the various performance objectives as it deems appropriate.

STI Awards. An STI Award is an annual cash bonus award under our STIP, the payout of which is based on the Board’s subjective analysis of the Partnership's performance and the performance of our Named Executive Officers during the year. At the beginning of the year, each Named Executive Officer is assigned a target amount, which is established as a percentage of the officer’s base salary, but could be adjusted if the Named Executive Officer receives a base salary increase during the year. The plan provides that payouts under the STIP can range from zero to 200% of the target amount, with 50% of the payout determined after taking into account our Partnership’s performance and 50% based on individual performance. The target and maximum potential payouts under the STIP as well as the allocation between Partnership and individual performance were determined at the discretion of the Board. In determining the target amount of the STI Awards, the Board considered (i) the value of each officer’s prior STI Awards, and (ii) the potential value of the STI Awards on the total direct compensation for each officer. The following are the target potential payout amounts that were established for 2017 for our Named Executive Officers:
Name 
 
2017 Base Salary (1)
 
 
2017 STI
Target %
 2017 STI Target Payout
Stanley C. Horton $850,018 100% $850,018
Jamie L. Buskill $450,008 100% $450,008
Michael E. McMahon $326,808 100% $326,808
John L. Haynes $326,808 100% $326,808

(1)Represents the base salary paid for 2017.



When determining whether to pay an STI Award for the year, the Board considers recommendations made by the CEO which are based on his subjective evaluation of whether, and to what extent, our Partnership met its performance goals during the year. He also makes recommendations based on his subjective assessment of the individual performance of each of the other Named Executive Officers. Any STI Award paid to the CEO is determined by the Board based upon a similar review performed by the Board without input from the CEO.

Our partnership performance goals are based on objectives that we believe reflect a well-rounded view of our performance. However, these goals are not tied to any specific targets and our achievement of these goals is ultimately determined by the Board in its sole discretion. For 2017, the following general objectives, which we refer to as Partnership Performance Goals, were established by the CEO and approved by the Board:
1.Operate our assets safely, reliably and in compliance with all applicable federal and state laws and governmental rules and regulations.
2.Focus on delivering financial results that are consistent with the Partnership's 2017 budget.
3.
Explore strategic acquisition opportunities that would support profitable diversification and/or growth of our business.

4.Improve efficiency throughout the Partnership including operating within departmental budgets.
5.Market firm transportation, storage, gathering and processing services.
6.Complete all projects on-time and meet project schedules for the year.
7.Remain within budgeted capital expenditures while meeting strict safety and compliance guidelines and business needs.
8.Identify other new growth and/or efficiency projects during the year that will result in the Partnership meeting its long-term growth projections and financial performance.

As discussed under Executive Summary, in light of the Partnership's achievements in 2017, the Board determined that we met a significant portion of our Partnership Performance Goals, which resulted in the determination that approximately 98.8% of the partnership performance portion of each STI Award should be paid.

The Board also subjectively considered the contributions of our Named Executive Officers, including the individual leadership, performance and efforts of each officer with respect to the Partnership's achievement of these goals. The following is a discussion of the material factors that were considered by the Board in determining what percentage of the annual incentive award would be paid based on individual performance:

Stanley C. Horton: In assessing Mr. Horton’s individual performance, the Board considered the accomplishments and the performance of the Partnership,as well as the leadership and strategic direction that Mr. Horton provided the entire employee team, including senior management, in terms of executing strategies to achieve the Partnership’s goals with respect to the market conditions impacting the midstream sector of the energy business. The Board also considered his customer relationships, past experience and vast knowledge of the industry which are of major importance to the Partnership.

Jamie L. Buskill: In assessing Mr. Buskill’s performance, the Board considered the accomplishments of the Partnership and Mr. Buskill’s continued leadership of the finance and accounting organization, which provides reporting to regulatory agencies and communication to the financial community and rating agencies, ensures proper capitalization of the Partnership for both the near-term and long-term under reasonable terms and conditions, provides fiduciary oversight by ensuring effective controls, procedures and risk management practices are in place and ensures the Partnership has sufficient liquidity for executing the Partnership’s operating plans and strategies. As Chief Administrative Officer, Mr. Buskill also has oversight over information technology, human resource practices, and other administrative functions of the Partnership. The Board also considered his knowledge of and the relationships within the industry and financial markets, which is of major importance to the Partnership, and his success in ensuring that adequate financing tools are in place to be able to fund the Partnership’s growth projects under development. Mr. Buskill also represented the Partnership within various associations, including serving on the board of directors of the Master Limited Partner Association.

Michael E. McMahon: In assessing Mr. McMahon’s performance, the Board considered the accomplishments of the Partnership and Mr. McMahon’s leadership of the legal and regulatory organizations, including his oversight in the Partnership’s compliance with applicable state and federal laws. Mr. McMahon provided oversight of FERC matters and other tariff filings and certificate applications required to support the Partnership’s growth projects. He also represented the Partnership with regard to state and federal governmental affairs and within various industry associations, including serving on several committees within


and in conjunction with the Interstate Natural Gas Association of America. The Board also considered his knowledge of the industry, and regulatory and legal matters which supports the Partnership’s success.    
John L. Haynes: In assessing Mr. Haynes’s performance, the Board considered the accomplishments of the Partnership and Mr. Haynes’s leadership of the commercial organization which is responsible for the marketing, business development and commercial operations of the Partnership’s natural gas transportation and storage services. Mr. Haynes was instrumental in the sale of the Partnership’s Flag City Processing Partners, LLC subsidiary and has played a key role in identifying new growth projects for the Partnership. The Board also considered his oversight over the marketing of expiring natural gas transportation and storage contracts, including the restructuring of contracts with a key customer on the Fayetteville and Greenville laterals, which helped to reduce the Partnership’s recontracting risk. The Board also considered his customer relationships, past experience and vast knowledge of the industry, including short-term and long-term natural market fundamentals, which is of major importance to the Partnership.

In light of these considerations, the Board approved the following payout of STI Awards for each Named Executive Officer:
 
Name
 
2017 Incentive
Payout as
% of Base Salary
 STI Bonus
Stanley C. Horton 138% $1,171,000
Jamie L. Buskill 122% $550,000
Michael E. McMahon 122% $400,000
John L. Haynes 122% $400,000

Each of the STI awards above was determined as follows: 50% of the award was based on Partnership performance of approximately 98.8% of target and 50% of the award was based on individual performance, as determined at the discretion of the Board.

Long-Term Incentive Awards – Phantom Common Units and Long-Term Cash Bonuses. We may grant a combination of cash and equity-based compensation awards, or any one of these awards individually, to our Named Executive Officers under our LTIP and our UAR and Cash Bonus Plan on an annual basis. The equity-based compensation awards are settled in cash rather than in the form of actual common units due to our structure as a limited partnership and certain tax matters associated with employee benefit plans. We currently limit the type of equity-based awards that we grant to Phantom Common Units under our LTIP, which are settled in cash. For the amounts of long-term incentive awards granted to our Named Executive Officers related to 2017, refer to the Compensation Attributable to the 2017 Calendar Year table.

The Board reviews and approves the mix of the awards annually, which supports the Compensation Program Objectives stated previously. Our long-term awards, whether cash or equity-based, typically have longer multiple year vesting periods and help achieve our retention objectives. The long-term incentive awards granted in 2018 and attributed to 2017 were in the form of Long-Term Cash Bonuses and Phantom Common Units, which align the interests of the Named Executive Officers with the value of our common units and allow participation in any appreciation of the value of the common units, while also offering a mixture of different award types. Approximately 25% of the long-term incentive award was awarded in the form of Long-Term Cash Bonuses and the remaining 75% was in the form of Phantom Common Units.

A Phantom Common Unit converts into the right to receive cash equal to the value of a common unit plus an amount equal to the accumulated amount of cash distributions made with respect to a common unit during the period the Phantom Common Units were outstanding, upon the satisfaction of the time-based criteria specified in the grant. For the Phantom Common Units granted in 2018, half of the awards will vest on December 1, 2019, and the other half will vest on December 1, 2020. With respect to the Phantom Common Units, the grantee must select one of two irrevocable payment elections shortly after the award is granted. If the first payment election is selected, an amount equal to the fair market value of the vested portion of the Phantom Common Units and associated cash distributions are payable to the grantee in cash upon each of the two vesting dates. If the second payment election option is selected, the fair market value for the Phantom Common Units and associated cash distributions, for all awards regardless of vesting date, are determined and paid at the final vesting date. Similar Phantom Common Unit awards were also granted in 2017 and 2016.
We have previously granted UARs to our employees, although no UARs have been granted to our Named Executive Officers since February 2013, and there are no remaining outstanding UARs held by the Named Executive Officers.



We may grant Long-Term Cash Bonuses as part of our incentive program. These awards mainly serve as retention awards, therefore they are not granted each year but were granted in 2018 with respect to 2017 and in 2017 with respect to 2016. For the Long-Term Cash Bonuses that were granted in 2018 and attributed to 2017, half of the awards will vest on December 1, 2019, and the other half on December 1, 2020, subject to the Named Executive Officer remaining continuously employed until that date, except for instances of retirement. The Named Executive Officer will become fully vested in the Long-Term Cash Bonus award upon retirement if retirement occurs 13 months after the grant date or one year after a retirement notice is provided, whichever is longer. At the end of the vesting period, our Named Executive Officers that continue to be employees are entitled to receive cash in the amount of the grant, or with respect to meeting the time requirements for retirement, are entitled to receive cash in the amount of the grant within 30 days of the initial vesting date. The Long-Term Cash Bonuses granted in 2017 attributed to 2016 had similar terms to those granted in 2018, except half of the awards vest on December 1, 2018, and the other half on December 1, 2019.

In determining the size of the annual long-term incentive awards granted to our Named Executive Officers and in assessing the reasonableness of those awards, the Board considered the value of each officer's prior long-term incentive awards, as well as the impact of the value of long-term incentive awards on total direct compensation.
Employee Benefits

Each Named Executive Officer participates in benefit programs available generally to salaried employees of the operating subsidiary which employs such officer, including health and welfare benefits and a qualified defined contribution 401(k) plan that includes a dollar-for-dollar match on elective deferrals of up to 6% of eligible compensation within Internal Revenue Code (IRC) requirements. With the exception of Mr. Buskill, our Named Executive Officers participate in a defined contribution plan, which is available to all employees of Gulf South and to Louisiana Midstream and to employees of Texas Gas hired on or after November 1, 2006. Our contributions to these defined contribution plans on behalf of the participating Named Executive Officers are reported in the Summary Compensation Table.

Mr. Buskill participates in a defined benefit cash balance pension plan available to employees of Texas Gas hired prior to November 1, 2006, and includes a non-qualified restoration plan for amounts earned in excess of IRC limits for qualified retirement plans. Mr. Buskill is also eligible for retiree medical benefits after reaching age 55 as part of a plan offered to Texas Gas employees hired prior to January 1, 1996. For more details regarding the pension benefits provided to Mr. Buskill, see Pension Benefits below.

All Other Compensation

There were no material perquisites or personal benefits paid to our Named Executive Officers in 2017.

Equity Ownership Guidelines

As discussed above, our executives would suffer significant negative tax consequences by owning our common units directly. As a result, we do not have a policy or any guidelines regarding required equity ownership by our management. We therefore seek to align the interests of management with our unitholders by periodically granting Phantom Common Units and UARs.

Clawbacks

The Long-Term Cash Bonus awards granted in 2018 and 2017 and the Phantom Common Unit awards granted in 2018, 2017 and 2016 contain a clawback provision that states that, in the event that an applicable law is violated, including the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, any Securities and Exchange Commission (SEC) rule or any applicable securities exchange listing standards, or any Partnership policy, all awards will be subject to forfeiture or recoupment to the extent necessary to comply with such laws or policy.



Risk Assessment

We have reviewed our compensation policies and practices for all employees, including Named Executive Officers, and determined that our compensation programs are not reasonably likely to cause behaviors that would have a material adverse effect on the Partnership. In arriving at this determination, the Board considered potential risks when reviewing and approving both executive-level and broad-based compensation programs. We have designed our compensation programs, including our incentive compensation plans, to minimize potential risks while rewarding employees for achieving long-term financial and strategic objectives through prudent business judgment. In particular, our compensation programs were designed to provide a balanced mix of cash and equity-based, annual and longer-term incentives, which are discretionary and subject to the Board’s evaluation of Partnership performance metrics as well as individual contributions to the Partnership's performance. Further, awards of incentive compensation are not purely formula driven, and the Board retains full discretion with regard to increasing or decreasing total compensation or any element of total compensation.

Board of Directors Report on Executive Compensation

In fulfilling its responsibilities, our Board has reviewed and discussed the Compensation Discussion and Analysis with our management. Based on this review and discussion, the Board recommended that the Compensation Discussion and Analysis be included in this Report.

By the members of the Board of Directors:

William R. Cordes
Stanley C. Horton
Thomas E. Hyland
Peter W. Keegan
Arthur L. Rebell
Mark L. Shapiro
Kenneth I. Siegel, Chairman
Andrew H. Tisch
Compensation Committee Interlocks and Insider Participation

As discussed above, our Board does not maintain a Compensation Committee. Our entire Board performs the functions of such a committee. None of our directors, except Mr. Horton, have been or are officers or employees of us or our subsidiaries. Mr. Horton participates in deliberations of our Board with regard to executive compensation generally, but does not participate in deliberations or Board actions with respect to his own compensation. None of our Named Executive Officers served as a director or member of a compensation committee of another entity that has or has had an executive officer who served as a member of our Board during 2017, 2016 or 2015.

Executive Compensation

Summary of Executive Compensation

The Board approved short and long-term incentive awards in 2018, which it considers to be related to 2017 even though the long-term incentive awards will not be reported in the Summary Compensation Table until 2018 or later, depending on the type of award. We consider compensation attributable to the 2017 calendar year to include the base salary paid during 2017, STI Awards awarded and paid in early 2018, but related to results achieved in 2017, and Long-Term Incentive Awards granted in early February 2018, but related to the results achieved in 2017. Refer to Compensation Attributable to the 2017 Calendar Year for further information. The following table shows a summary of total compensation earned by our Named Executive Officers for 2017, 2016 and 2015, reported in accordance with the SEC rules regarding the timing of executive compensation:


Summary Compensation Table for 2017
Name
 and
Principal Position
 Year 
Salary
($)
 
Bonus
(1)(2)
($)
 
Unit
Awards
(3)
($)
 
Change in
Pension Value
and
Nonqualified Deferred Compensation Earnings
($)
 
All Other
Compensation
($)
 
Total
(9)
($)
                 
Stanley C. Horton, CEO            
  2017 850,018
 2,266,000
 1,656,017
 
  34,100
(4) 
 4,806,135
  2016 850,018
 3,009,500
 1,610,290
 
  34,142

 5,503,950
  2015 811,554
 1,709,500
 1,798,834
 
  34,142
  4,354,030
Jamie L. Buskill, CFO
 

 

 
 
 
 
 


2017
450,008

992,500

490,661

396,368
(5) 

20,170
(6) 

2,349,707


2016
408,661

1,221,250

447,307

320,128


20,179


2,417,525


2015
325,000

621,250

499,670

109,125


19,687


1,574,732
Michael E. McMahon, Senior Vice President, General Counsel and Secretary   
  2017 326,808
 880,000
 449,785
 
  33,263
(7) 
 1,689,856
  2016 307,624
 1,060,000
 380,209
 
  32,988
  1,780,821
  2015 300,000
 640,000
 399,739
 
  32,828
  1,372,567
John L. Haynes, Senior Vice President, Chief Commercial Officer and President, Texas Intrastate
  2017 326,808
 762,500
 449,785
 
  38,381
(8) 
 1,577,474
(1)
The amounts shown in this column represent cash STI Awards earned under our STIP for 2017, 2016 and 2015. See the Compensation Discussion and Analysis above for discussion of the 2017 STI Awards. The amounts for 2017, 2016 and 2015 also include retention payments described below and the amounts for 2016 include Long-Term Cash Bonuses that were granted to Messrs. Horton, Buskill and McMahon in 2014 having stated amounts of $1,300,000, $500,000, and $400,000. The awards vested and were paid in 2016, and are reported in the Summary Compensation Table in 2016, which is the year they were earned.
(2)In 2014, Messrs. Horton, Buskill, McMahon and Haynes were awarded $2,190,000, $885,000, $960,000 and $725,000 under Retention Payment Agreements. Each award vested and became payable as follows: 25% vested and became payable on February 28, 2015, 25% vested and became payable on February 29, 2016, and the remaining 50% vested and became payable on February 28, 2017. In 2017, amounts earned and paid to Messrs. Horton, Buskill, McMahon and Haynes under the Retention Payment Agreements were $1,095,000, $442,500, $480,000 and $362,500. In 2016 and 2015, amounts earned and paid to Messrs. Horton, Buskill and McMahon under the Retention Payment Agreements were $547,500, $221,250 and $240,000 for each year.
(3)Messrs. Horton, Buskill, McMahon and Haynes were granted “Unit Awards” in the form of Phantom Common Units under our LTIP in February 2017 having a grant date fair value, determined in accordance with GAAP, of $1,656,017, $490,661, $449,785 and $449,785 and reported in the Summary Compensation Table for 2017. The fair value of each unit was derived based on the closing price of $18.58 for our common units on the NYSE on February 1, 2017. Each such grant includes a tandem grant of Distribution Equivalent Rights (DERs); will vest 50% on December 1, 2018, and 50% on December 1, 2019; and will be payable in cash to the grantee pursuant to a payment option selected by the grantee in an amount equal to the 30 day trading average closing price of the units (as defined in the plan). The vested amount then credited to the grantee’s DER account will be payable in cash. Messrs. Horton, Buskill and McMahon were also granted Phantom Common Units under our LTIP in February 2016 having a grant date fair value, determined in accordance with GAAP, of $1,610,290, $447,307 and $380,209 reported in the Summary Compensation Table for 2016. The fair value of each unit was derived based on the closing price of $10.61 for our common units on the NYSE on February 3, 2016. The 2016 awards have similar terms as the 2017 awards except 50% vested on December 1, 2017, and 50% will vest on December 1, 2018. Messrs. Horton, Buskill and McMahon were also granted Phantom Common Units under our LTIP in February 2015 having a grant date fair value, determined in accordance with GAAP, of $1,798,834, $499,670 and $399,739 and reported in the Summary Compensation Table for 2015. The fair value of each


unit was derived based on the closing price of $15.51 for our common units on the NYSE on February 4, 2015. The 2015 awards have similar terms as the 2017 and 2016 awards, except 50% vested on December 1, 2016, and 50% vested on December 1, 2017. Note 11 in Part II, Item 8 of this Report contains information regarding the grant fair value of the Phantom Common Units. See Compensation Discussion and Analysis for more information regarding the terms of the Long-Term Incentive awards.
(4)Includes matching contributions under 401(k) plan ($16,200), employer contributions to the Boardwalk Savings Plan ($10,800), imputed life insurance premiums ($6,858) and preferred parking.
(5)
Includes the change in qualified retirement plan account balance ($92,713) and interest and pay credits for the supplemental retirement plan ($303,655). Details about both pension plans are contained in the Pension Benefits section below.
(6)Includes matching contributions under 401(k) plan ($16,200), imputed life insurance premiums ($3,729) and preferred parking.
(7)Includes matching contributions under 401(k) plan ($16,200), employer contributions to the Boardwalk Savings Plan ($10,800), imputed life insurance premiums ($6,021) and preferred parking.
(8)Includes matching contributions under 401(k) plan ($16,200), employer contributions to the Boardwalk Savings Plan ($10,800), imputed life insurance premiums ($11,139) and preferred parking.
(9)
In addition to the compensation reported herein, in 2018, Long-Term Cash Bonuses were granted to Messrs. Horton, Buskill, McMahon and Haynes having stated amounts of $521,250, $150,000, $143,750 and $143,750. The awards will vest and become payable 50% on December 1, 2019, and 50% on December 1, 2020. Additionally, Messrs. Horton, Buskill, McMahon and Haynes were granted “Unit Awards” in the form of Phantom Common Units under our LTIP, having a grant date fair value of $1,418,477, $408,196, $391,190 and $391,190. The fair value of each unit was derived based on the closing price on February 7, 2018, for our common units on the NYSE of $12.01. Each such grant includes a tandem grant of DERs; will vest 50% on December 1, 2019, and 50% on December 1, 2020; and will be payable in cash to the grantee pursuant to a payment option selected by the grantee in an amount equal to the 30 day trading average closing price of the units (as defined in the plan). The vested amount then credited to the grantee’s DER account will be payable in cash. See Compensation Discussion and Analysis above for discussion of the Long-Term Cash Bonuses and Phantom Common Unit awards.

The following table sets forth the percentage of each Named Executive Officer’s total compensation that we paid in the form of salary and bonus:
Named Executive Officer Year Percentage of Total Compensation Paid as Salary and Bonus
Stanley C. Horton 2017 65%
Jamie L. Buskill 2017 61%
Michael E. McMahon 2017 71%
John L. Haynes 2017 69%



Grants of Plan-Based Awards

The following table displays information regarding grants made during 2017 to our Named Executive Officers of Phantom Common Unit awards under our LTIP:

Grants of Plan-Based Awards for 2017
Names Grant Date 
All Other Unit
Awards: Number
of Units(1)
(#)
 
Grant Date Fair Value of Unit Awards(2)
($)
Stanley C. Horton 2/2/2017 89,129
 1,656,017
Jamie L. Buskill 2/2/2017 26,408
 490,661
Michael E. McMahon 2/2/2017 24,208
 449,785
John L. Haynes 2/2/2017 24,208
 449,785

(1) Represents Phantom Common Units granted under our LTIP. The fair value of each unit was derived based on the closing price of $18.58 for our common units on the NYSE on February 1, 2017. Each such grant includes a tandem grant of DERs; vests 100% on the vesting date; and will be payable to the grantee in cash, or in common units at the Board’s option, upon vesting in an amount equal to the fair market value of the units (as defined in the plan) that vest on the vesting date. The vested amount then credited to the grantee’s DER account will be payable in cash.
(2) Note 11 in Part II, Item 8 of this Report contains information regarding the grant date fair value of the Phantom Common Units.

Narrative Disclosure to Summary Compensation Table and Grants of Plan-Based Awards Table

The Board considers compensation awarded to the Named Executive Officers early in the following year to be attributable to the previous reporting year. Refer to Compensation Attributable to the 2017 Calendar Year for more information on compensation that the Board awarded to the Named Executive Officers related to 2017. The components of compensation earned by the Named Executive Officers have not changed from 2016 to 2017, with approximately 25% of the long-term incentive award being awarded in the form of Long-Term Cash Bonus awards and the remaining 75% awarded in the form of Phantom Common Units. In 2015, all long-term incentive awards were in the form of Phantom Common Units.

The following provides information regarding the Long-Term Cash Bonus awards that were granted to the Named Executive Officers in February 2018, 2017 and 2014, equity-based compensation awards that were granted in February 2018, 2017, 2016 and 2015 and retention awards granted to the Named Executive Officers in March 2014. Equity based-compensation awards are reportable in the Summary Compensation Table in the year of grant, whereas Long-Term Cash Bonus awards and Retention payments are reportable in the Summary Compensation Table in the year of payment.

Phantom Common Units. Each outstanding Phantom Common Unit includes a tandem grant of DERs. The grantee must select one of two irrevocable payment elections shortly after the award is granted. If the first payment election is selected, an amount equal to the fair market value of the vested portion of the Phantom Common Units and associated DERs will become payable to the grantee in cash on each of the two vesting dates. If the second payment election option is selected, the Phantom Common Units and associated DERs will become payable in cash on the second vesting date. For the Phantom Common Units granted in February 2018, half of the Phantom Common Units will vest on December 1, 2019, and the other half will vest on December 1, 2020. For the Phantom Common Units granted in February 2017, half of the Phantom Common Units will vest on December 1, 2018, and the other half will vest on December 1, 2019, and for the Phantom Common Units granted in February 2016, half vested on December 1, 2017, and the remaining half will vest on December 1, 2018. Messrs. Horton, Buskill, McMahon and Haynes were granted Phantom Common Units under our LTIP in February 2018, having a grant date fair value, determined in accordance with GAAP, of $1,418,477, $408,196, $391,190 and $391,190. Messrs. Horton, Buskill, McMahon and Haynes were granted Phantom Common Units under our LTIP in February 2017, having a grant date fair value, determined in accordance with GAAP, of $1,656,017, $490,661, $449,785 and $449,785. Messrs. Horton, Buskill and McMahon were granted awards in February 2016 having a grant date fair value of $1,610,290, $447,307, and $380,209 and were granted awards in February 2015 having a grant date fair value of $1,798,834, $449,670 and $399,739.



Cash Bonus Awards. Long-Term Cash Bonuses were granted to Messrs. Horton, Buskill, McMahon and Haynes in 2018 in the amounts of $521,250, $150,000, $143,750 and $143,750 and in 2017 in the amounts of $506,250, $150,000, $137,500 and $137,500. For the Long-Term Cash Bonus awards granted in February 2018, half of the award will vest on December 1, 2019, and the other half will vest on December 1, 2020, after the expiration of a Restricted Period, subject to the Named Executive Officer remaining continuously employed until that date, except for instances of retirement. For the Long-Term Cash Bonus awards granted in February 2017, half of the award will vest on December 1, 2018, and the other half will vest on December 1, 2019, after the expiration of a Restricted Period, subject to the Named Executive Officer remaining continuously employed until that date, except for instances of retirement. The Named Executive Officer will become fully vested in the Long-Term Cash Bonus award upon retirement if retirement occurs 13 months after the grant date or one year after a retirement notice is provided, whichever is longer. At the end of the vesting period, our Named Executive Officers that continue to be employees are entitled to receive cash in the amount of the grant, or with respect to meeting the time requirements for retirement, are entitled to receive cash in the amount of the grant within 30 days of the initial vesting date. In February 2014, the Board granted Long-Term Cash Bonuses to the Named Executive Officers, where were vested and paid in December 2016.

Retention Program. In March 2014, because of the challenges that the Partnership was facing, the Board granted to each of the Named Executive Officers a retention award, which was made pursuant to a Retention Payment Agreement. Grants have not been made under our Retention Program since 2014. Vesting and payment of the awards occurred over a three-year period as follows: 25% vested and became payable on February 28, 2015, 25% vested and became payable on February 29, 2016, and the remaining 50% vested and became payable on February 28, 2017. In order for an award to vest, the Named Executive Officer must remain continuously employed by the Partnership or a subsidiary through the applicable vesting date.
For more information about the components of compensation reported in the Summary Compensation Table, and Grants of Plan-Based Awards, please read the Compensation Discussion and AnalysisForm 10-K.

Outstanding Equity Awards at Fiscal Year-End

The table displayed below shows the total number of outstanding equity awards in the form of Phantom Common Units awarded under our LTIP held by our Named Executive Officers at December 31, 2017:
   Phantom Common Units 
Name  Number of Units That Have Not Vested 
Market Value of Units That Have Not Vested
($)
 
Stanley C. Horton  75,885 1,040,383
(1) 
   89,129 1,186,307
(2) 
Jamie L. Buskill  21,079 288,993
(1) 
   26,408 351,490
(2) 
Michael E. McMahon (3)
  35,274 483,601
(1) 
   24,208 322,208
(2) 
John L. Haynes  21,079 288,993
(1) 
   24,208 322,208
(2) 
(1) The market value reported is based on the NYSE closing market price on December 29, 2017, of $12.91. These Phantom Common Units will vest on December 1, 2018. In addition to the Phantom Common Units, Messrs. Horton, Buskill, McMahon and Haynes have accumulated non-vested DERs. Such DER amounts for Messrs. Horton, Buskill, McMahon and Haynes were $60,708, $16,863, $28,219 and $16,863 as of December 31, 2017. Note 11 in Part II, Item 8 of this Report contains more information regarding our LTIP.
(2) The market value reported is based on the NYSE closing market price on December 29, 2017, of $12.91. These Phantom Common Units will vest 50% on December 1, 2018, and 50% on December 1, 2019. In addition to the Phantom Common Units, Messrs. Horton, Buskill, McMahon and Haynes have accumulated non-vested DERs. Such DER amounts for Messrs. Horton, Buskill, McMahon and Haynes were $35,652, $10,563, $9,683 and $9,683 as of December 31, 2017. Note 11 in Part II, Item 8 of this Report contains more information regarding our LTIP.


(3) As discussed in Phantom Common Units above, these awards contained payment options for which each Named Executive Officer was required to make a payment election within 30 days of the grant of the award. Mr. McMahon, while his units vested on December 1, 2017, elected to defer payment of his award and related DER amounts until December 2018 pursuant to the payment options and provisions of the grant agreement. The vested Phantom Common Units will continue to be re-measured and accumulate DERs until settlement, pursuant to the provisions of the grant agreement.

Units Vested

The following table presents information regarding the vesting during 2017 of Phantom Common Units previously granted to our Named Executive Officers.
Units Vested for 2017
 Unit Awards
Name 
Number of Phantom Common Units Vesting
 (#)
 
Value Received on Vesting (1)
($)
Stanley C. Horton 57,989
 895,350
  75,886
 1,141,325
Jamie L. Buskill 16,108
 248,708
  21,080
 317,043
Michael E. McMahon (2)
 12,886
 198,960
  17,918
 269,487
John L. Haynes 16,108
 248,708
  21,080
 317,043
(1)The Phantom Common Units vested December 1, 2017. At no time were our common units issued to or owned by the Named Executive Officers.
(2)
As discussed in Phantom Common Units above, these awards contained payment options for which each Named Executive Officer was required to make a payment election within 30 days of the grant of the award. Mr. McMahon, while his units vested on December 1, 2017, elected to defer payment of his award and related DER amounts until December 2018 pursuant to the payment options and provisions of the grant agreement. The vested Phantom Common Units will continue to be re-measured and accumulate DERs until settlement, pursuant to the provisions of the grant agreement. A portion of these deferred units were redeemed to satisfy tax requirements.

Pension Benefits

The table displayed below shows the present value of accumulated benefits for our Named Executive Officers. Only employees of our Texas Gas subsidiary hired prior to November 1, 2006, are eligible to receive the pension benefits discussed below. Messrs. Horton, McMahon and Haynes are, and during 2017 were, employees of our Gulf South subsidiary and are not covered under any Texas Gas benefit plans. Pension benefits include both a qualified defined benefit cash balance plan and a non-qualified defined benefit supplemental cash balance plan (SRP).
Pension Benefits for 2017
Name Plan Name 
Number of Years Credited Service
 (#)
 
Present Value of Accumulated Benefit
 ($)
 
Payments During Last Fiscal Year
($)
Jamie L. Buskill TGRP 31.3
 734,572
 
  SRP 31.3
 1,195,228
 



The Texas Gas Retirement Plan (TGRP) is a qualified defined benefit cash balance plan that is eligible to all Texas Gas employees hired prior to November 1, 2006. Participants in the plan vest after three years of credited service. One year of vesting service is earned for each calendar year in which a participant completes 1,000 hours of service. Eligible compensation used in calculating the plan’s annual compensation credits include total salary and bonus paid. The credit rate on all eligible compensation is 4.5% prior to age 30, 6.0% age 30 through 39, 8.0% age 40 through 49 and 10.0% age 50 and older up to the Social Security Wage Base. Additional credit rates on annual pay above Social Security Wage Base is 1.0%, 2.0%, 3.0% and 5.0% for the same age categories. On April 1, 1998, the TGRP was converted to a cash balance plan. Credited service up to March 31, 1998, is eligible for a past service credit of 0.3%. Additionally, participants may qualify for an early retirement subsidy if their combined age and service at March 31, 1998, totaled at least 55 points. The amount of the subsidy is dependent on the number of points and the participant’s age of retirement. Mr. Buskill did not meet the eligibility requirements to qualify for the early retirement subsidy. Upon retirement, the retiree may choose to receive their benefit from a variety of payment options which include a single life annuity, joint and survivor annuity options and a lump-sum cash payment. Joint and survivor benefit elections serve to reduce the amount of the monthly benefit payment paid during the retiree’s life but the monthly payments continue for the life of the survivor after the death of the retiree. The TGRP has an early retirement provision that allows vested employees to retire early at age 55. Mr. Buskill is not yet eligible to receive an early retirement benefit pursuant to the TGRP.

The credited years of service appearing in the table above are the same as actual years of service. No payment was made to the Named Executive Officer during 2017. The present value of accumulated benefits payable to the Named Executive Officer, including the number of years of service credited to the Named Executive Officer, is determined using assumptions consistent with the assumptions used for financial reporting. Interest will be credited to the cash balance at December 31, 2017, commencing in 2017, using a quarterly compounding up to the normal retirement date of age 65. Salary and bonus pay credits, up to the IRC allowable limits, increase the accumulated cash balance in the year earned. Credited interest rates used to determine the accumulated cash balance at the normal retirement date as of December 31, 2017, 2016 and 2015, were 3.00%, 3.00% and 3.26% and for future years, 3.00%, 3.00% and 3.00%. The future normal retirement date accumulated cash balance was then discounted using an interest rate at December 31, 2017, 2016 and 2015, of 3.25%, 3.60% and 3.60%. The increase in the present value of accumulated benefit for the TGRP between December 31, 2017 and 2016, of $92,713 for Mr. Buskill is reported as compensation in the Summary Compensation Table above.

The Texas Gas SRP is a non-qualified defined benefit cash balance plan that provides supplemental retirement benefits on behalf of participating employees for earnings that exceed the IRC compensation limitations for qualified defined benefit plans, which for 2017 was $270,000. The SRP acts as a supplemental plan, therefore the eligibility and retirement provisions, the form and timing of distributions and the manner in which the present value of accumulated benefits are calculated, are similar to the same provisions as described above for the TGRP. The increase in the present value of accumulated benefit for the SRP between December 31, 2017 and 2016, of $303,655, for Mr. Buskill is reported as compensation in the Summary Compensation Table.

Nonqualified Deferred Compensation

Although we do not maintain a traditional nonqualified deferred compensation plan, the deferral option associated with the Phantom Common Unit awards is considered a form of deferred compensation and must be reported as such. The following table shows nonqualified deferred compensation plan information for Mr. McMahon, who elected to defer payment of his Phantom Common Unit award granted in 2016 and related DER amounts under our LTIP until December 2018, pursuant to the payment options and provisions of the grant agreement:
Nonqualified Deferred Compensation
Name 
Registrant Contributions in 2017
($)
 
Aggregate Balance at December 31, 2017
($)
Michael E. McMahon (1)
 237,959
 237,959

(1) As discussed in Phantom Common Units above, the LTIP awards contained payment options for which each Named Executive Officer was required to make a payment election within 30 days of the grant of the award. Mr. McMahon, while his units vested on December 1, 2017, elected to defer payment of his award and related DER amounts until December 2018 pursuant to the payment options and provisions of the grant agreement. The vested Phantom Common Units will continue to be re-measured and accumulate DERs until settlement, pursuant to the provisions of the grant agreement. A portion of these deferred units were redeemed to satisfy tax requirements and are not reflected in the amounts reported above.


Potential Payments Upon Termination or Change of Control

As of December 31, 2017, we did not have employment agreements with our Named Executive Officers. Our Named Executive Officers are eligible to receive accelerated vesting of cash and equity-based awards under certain of our compensation plans. As of December 31, 2017, our Named Executive Officers have outstanding grants of Phantom Common Units and Long-Term Cash Bonuses subject to specific vesting schedules and payment limitations, as discussed above. The Phantom Common Units and Long-Term Cash Bonuses will vest on a prorated basis under certain circumstances, or will become fully vested under instances of retirement subject to a time requirement, and will be payable in accordance with the provisions of the LTIP and grant agreements, as applicable, as described below. A termination of employment may also trigger a distribution of amounts from retirement plan accounts under the TGRP or the SRP. Any retirement plan distributions would be no more than those amounts disclosed in the table shown above; thus, the PotentialPayments Upon Termination or Change of Control Table shown below does not include amounts attributable to the retirement plans disclosed above.
We believe that the acceleration and payment provisions contained in our various long-term incentive award agreements create important retention tools for us, because providing for accelerated vesting of equity-based awards upon a termination of employment for a death or disability provides employees with value in the event of a termination of employment that was beyond their control. Other companies in our industry and the general market where we compete for executive talent commonly have equity compensation plans that provide for accelerated vesting upon certain terminations of employment, and we have provided this benefit to our Named Executive Officers in order to remain competitive in attracting and retaining skilled professionals in our industry. In this discussion, prorated means the number of days in the period beginning on the grant date of the award through the termination date of the named executive officer's employment in relation to the total number of days in the vesting period.

Long-Term Incentive Plan. Within 30 days of the grant date of a Phantom Common Unit, the Named Executive Officer is required to make a payment election, which will determine if the Named Executive Officer receives payments with respect the Phantom Common Units and DERs as they vest or defer all payments until the final vesting date (subject to the acceleration and withholding of a portion of such payments to satisfy applicable tax withholding obligations). The Long-Term Cash Bonuses are paid within 30 days of vesting. If a change in control occurs, and a Named Executive Officer’s service is terminated due to a Qualified Termination (as defined in the grant agreement), the Named Executive Officer will become automatically vested in all outstanding Phantom Common Units and Long-Term Cash Bonuses upon termination, but the Phantom Common Unit awards will be paid pursuant to the payment option elected by the Named Executive Officer and the Long-Term Cash Bonuses will be paid within 30 days of the original vesting date. A change of control will be deemed to occur under our LTIP upon one or more of the following events: (a) any person or group, other than our general partner or its affiliates, becomes the owner of 50% or more of our equity interests; (b) any person, other than Loews or its affiliates, become our general partner; or (c) the sale or other disposition of all or substantially all of our assets or our general partner’s assets to any person that is not an affiliate of us or our general partner. However, in the event that any award granted under our LTIP is also subject to IRC section 409A, a change of control shall have the definition of such term as found in the treasury regulations with respect to IRC section 409A.

The unvested Phantom Common Units (and all DERs associated with such Phantom Common Units) and Long-Term Cash Bonuses will become vested on a prorated basis upon an executive’s death or disability. Our individual form award agreements define a disability as an event that would entitle that individual to benefits under either our or one of our affiliates’ long-term disability plans (Disability). In the cases of death or Disability, the value of any then vested awards would be determined and paid at the time of termination. In the case of retirement, any outstanding and unvested awards would become fully vested upon a Named Executive Officer’s retirement and the Phantom Common Unit awards will be paid pursuant to the payment option elected by the Named Executive Officer and the Long-Term Cash Bonuses will be paid within 30 days of the original vesting date. The award agreements define retirement as a termination on or after age 55, with at least 5 years of continuous service. In order to become vested in the Phantom Common Unit, retirement must occur 13 months after the grant date or one year after a retirement notice is provided, whichever is longer.
Paid Time Off (PTO). Upon any termination of employment, the Named Executive Officers would receive the remaining accrued PTO that they accumulated during the year, if any.



Potential Payments Upon Termination or Change of Control Table

The following table represents our estimate of the amount each of our Named Executive Officers would have received upon the applicable termination or change of control event, if such event had occurred on December 31, 2017. The closing price of our common units on the NYSE on December 29, 2017, $12.91, was used to calculate these amounts. The LTIP amounts do not include the Phantom Common Unit awards and Long-Term Cash Bonuses that were granted in 2018, as the Named Executive Officers did not hold these awards as of December 31, 2017. The amounts that any Named Executive Officer could receive upon a termination of employment or a change of control cannot be determined with any certainty until an actual termination of employment or a change of control occurs. For purposes of the below table, we have assumed all salary and bonuses were paid current as of December 31, 2017.

Potential Payments Upon Termination or Change of Control at December 31, 2017
Name Plan Name 
Change of Control
($)
 
Termination Other than for Cause
($)
 
Termination for Cause, or Voluntary Resignation
($)
 
Retirement
($)
 
Death or Disability
($)
Stanley C. Horton 
LTIP (1)(2)
 2,226,690
 
 
 1,040,383
 1,188,398
  
UAR and Cash Bonus Plan (3)
 506,250
 
 
 
 207,425
  
PTO (4)
 11,443
 11,443
 11,443
 11,443
 11,443
  Total 2,744,383
 11,443
 11,443
 1,051,826
 1,407,266
             
Jamie L. Buskill (5)
 
LTIP (2)
 640,483
 
 
 
 339,106
  
UAR and Cash Bonus Plan (3)
 150,000
 
 
 
 61,459
  
PTO (4)
 6,058
 6,058
 6,058
 6,058
 6,058
  Total 796,541
 6,058
 6,058
 6,058
 406,623
             
Michael E. McMahon 
LTIP (1)(2)
 805,809
 
 
 483,601
 538,299
  
UAR and Cash Bonus Plan (3)
 137,500
 
 
 
 56,337
  
PTO (4)
 6,982
 6,982
 6,982
 6,982
 6,982
  Total 950,291
 6,982
 6,982
 490,583
 601,618
             
John L. Haynes 
LTIP (1)(2)

611,201





288,993

327,109
  
UAR and Cash Bonus Plan (3)
 137,500
 
 
 
 56,337
  
PTO (4)

16,502

16,502

16,502

16,502

16,502
  Total
765,203

16,502

16,502

305,495

399,948
(1)As of December 31, 2017, Messrs. Horton, McMahon and Haynes were eligible for retirement as defined in the LTIP award agreement (as defined above). In order for a Phantom Common Unit to become vested due to retirement, retirement must occur 13 months after the grant date or one year after a retirement notice is provided, whichever is longer. The awards that exceed the time requirement are the LTIP awards granted in February 2016. LTIP amounts were determined by multiplying the number of Phantom Common Units each executive held on December 31, 2017, by the value of our common units on December 29, 2017, or $12.91. As of December 31, 2017, Messrs. Horton, McMahon and Haynes held Phantom Common Units of 75,885, 35,274, and 21,079 which were granted in 2016. The DER adjustment through December 31, 2017, applicable to each Phantom Common Unit granted in February 2016, was $0.80. Except for amounts associated with Mr. McMahon’s Phantom Common Units which vested in 2017 and payment was deferred until 2018, all remaining amounts will vest on December 1, 2018, and all amounts will become payable on December 1, 2018.


(2)For LTIP amounts related to change of control, the full amount of the award would become vested in the event that the change of control definition per the award agreement has been triggered. For LTIP amounts related to death or disability, amounts were determined by multiplying the prorated number of unvested Phantom Common Units each executive held on December 31, 2017, by the value of our common units on December 29, 2017, or $12.91. For the 2016 grants, the assumed proration factor at December 31, 2017, was 0.675 for the awards vesting on December 1, 2018. As of December 31, 2017, Messrs. Horton, Buskill, McMahon and Haynes held Phantom Common Units of 75,885, 21,079, 35,274 and 21,079 which were granted in 2016. The DER adjustment through December 31, 2017, applicable to each Phantom Common Unit granted in February 2016, was $0.80. For the 2017 grants, the assumed proration factor at December 31, 2017, was 0.498 for the awards vesting on December 1, 2018, and 0.322 for the awards vesting on December 1, 2019. As of December 31, 2017, Messrs. Horton, Buskill, McMahon and Haynes held Phantom Common Units of 89,129, 26,408, 24,208 and 24,208 which were granted in 2017. The DER adjustment through December 31, 2017, applicable to each Phantom Common Unit granted in February 2017, was $0.40.
(3)For Long-Term Cash Bonus amounts related to change of control, the full amount of the award would become vested in the event that the change of control definition per the award agreement has been triggered. For Long-Term Cash Bonus amounts related to death or disability, amounts were determined by multiplying the outstanding Long-Term Cash Bonus amount by a proration factor. As of December 31, 2017, Messrs. Horton, Buskill, McMahon and Haynes held Long-term Cash Bonuses of $506,250, $150,000, $137,500 and $137,500 that were granted in February 2017. The assumed proration factor at December 31, 2017, in determining the Long-Term Cash Bonus amounts related to death or disability was 0.498 for half the award vesting on December 1, 2018, and 0.322 for half the award vesting on December 1, 2019.
(4)Includes earned but unused PTO at December 31, 2017. In order to receive PTO payments upon retirement, the employee must have provided us with at least a six month notice prior to the termination of his employment.
(5)Mr. Buskill would also be entitled to receive payment under the SRP six months after termination for any reason, which amounts are reported in the Pension Benefits table.

Director Compensation

Each director of BGL who is not an officer or employee of us, our subsidiaries, our general partner or an affiliate of our general partner (an Eligible Director) is paid an annual cash retainer of $50,000 ($55,000 for the chairman of the Audit Committee and Conflicts Committee) payable in equal quarterly installments, and receives an annual grant of common units in an amount equal to $50,000 in which the director is immediately vested. The number of common units will be calculated by using the average of the thirty days closing market price prior to issuance. Directors who are not Eligible Directors do not receive compensation from us for their services as directors. All directors are reimbursed for out-of-pocket expenses they incur in connection with attending Board and committee meetings and will be fully indemnified by us for actions associated with being a director to the extent permitted under Delaware law.
Director Compensation for 2017
Name 
Fees Earned or Paid in Cash
($)
 
Unit Awards (1)
($)
 
Total
 ($)
Arthur L. Rebell 56,000 50,007 106,007
William R. Cordes 56,000 50,007 106,007
Thomas E. Hyland (2)
 64,000 50,007 114,007
Mark L. Shapiro (3)
 61,000 50,007 111,007

(1)On February 21, 2017, Messrs. Rebell, Cordes, Hyland and Shapiro were each granted 2,703 common units. The grant date fair value of the award for each Eligible Director, based on the market price of $18.50, was $50,007. The Eligible Directors had no outstanding equity awards at December 31, 2017.
(2)Chairman of the Audit Committee.
(3)Chairman of the Conflicts Committee.



CEO Pay Ratio

As required by Section 953(b) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and Item 402(u) of Regulation S-K, we are providing the following information about the relationship of the annual total compensation of our employees and the annual total compensation of Mr. Horton. For 2017:

Median Employee total annual compensation

$100,116
Mr. Horton (CEO) total annual compensation

$4,806,135
Ratio of CEO to Median Employee compensation

48.0 to 1

To identify the median of the annual total compensation of all our employees, as well as to determine the annual total compensation of our median employee and our CEO, we took the following steps:

We determined that, as of December 31, 2017, our employee population consisted of approximately 1,260 individuals with all of these individuals located in the U.S. (as reported in Part I, Item 1, Our Business). This population consisted of our full-time and part-time employees, as we do not have temporary or seasonal workers. We selected December 31, 2017, as our identification date for determining our median employee because it enabled us to make such identification in a reasonably efficient and economic manner.

We used a consistently applied compensation measure to identify our median employee by comparing the amount of salary or wages, overtime and short-term incentive bonuses for 2017 as reflected in our payroll records. To make them comparable, salaries for newly hired employees who had worked less than a year were annualized and the target short-term incentive bonus amount was applied to their total compensation measure.

We identified our median employee by consistently applying this compensation measure to all of our employees included in our analysis. Since all of our employees, including our CEO, are located in the U.S., we did not make any cost of living adjustments in identifying the median employee.

After we identified our median employee, we combined all of the elements of such employee’s compensation for the 2017 year in accordance with the requirements of Item 402(c)(2)(x) of Regulation S-K, resulting in annual total compensation of $100,116. The difference between such employee’s salary, wages and overtime pay and the employee’s annual total compensation represents matching contributions under our 401(k) plan ($5,393), employer contributions to the Boardwalk Savings Plan ($3,595) and imputed life insurance premiums ($871).

With respect to the annual total compensation of our CEO, we used the amount reported in the “Total” column of our 2017 Summary Compensation Table included in this Proxy Statement and incorporated by reference under Part III, Item 11 of our Annual Report.


113



Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The following table setsWe are omitting disclosure under this item because we meet the conditions set forth certain information, at in General Instructions I(1) (a) and (b) of Form 10-KFebruary 15, 2018, as to the beneficial ownership of our common units by beneficial holders of 5% the outstanding common units, each member of our Board, each of the Named Executive Officers and all of our executive officers and directors as a group, based on data furnished by them. None of the parties listed in the table have the right to acquire units within 60 days..

Name of Beneficial Owner 
Common 
Units Beneficially Owned
 
Percentage of
Common
 Units Beneficially Owned (1)
Stanley C. Horton 14,000
(2) 
*
Jamie L. Buskill  
William R. Cordes 18,912 *
John L. Haynes  *
Thomas E. Hyland 24,812
(3) 
*
Peter W. Keegan  
Michael E. McMahon  
Arthur L. Rebell 56,088
(4) 
*
Mark L. Shapiro 29,412 *
Kenneth I. Siegel  *
Andrew H. Tisch 81,050
(5) 
*
All directors and executive officers as a group 224,274 *
BPHC (6)
 125,586,133 50%
Loews (6)
 125,586,133 50%
*Represents less than 1% of the outstanding common units
(1)As of February 15, 2018, we had 250,296,782 common units issued and outstanding.
(2)14,000 units were purchased and are owned by Mr. Horton’s spouse. In October 2015, these shares were transferred to the DWH Revocable Trust of which Mr. Horton's spouse is the beneficiary and trustee.
(3)400 of these units are owned by Mr. Hyland’s spouse.
(4)32,984 of these units are owned by ARebell, LLC, a limited liability company controlled by Mr. Rebell. 801 units are owned by Mr. Rebell's spouse.
(5)Represents one quarter of the number of units owned by a general partnership in which a one-quarter interest is held by a trust of which Mr. Tisch is managing trustee.
(6)
Loews is the parent company of BPHC and may, therefore, be deemed to beneficially own the units held by BPHC. The address of BPHC is 9 Greenway Plaza, Suite 2800, Houston, TX 77046. The address of Loews is 667 Madison Avenue, New York, New York 10065. Boardwalk GP, an indirect, wholly-owned subsidiary of BPHC, also holds our 2% general partner interest and all of our IDRs. Including the general partner interest but excluding the impact of the IDRs, Loews indirectly owns approximately 51% of our total ownership interests. Our Partnership Interests in Part II, Item 5 of this Report contains more information regarding our calculation of BPHC’s equity ownership.



Securities Authorized for Issuance Under Equity Compensation Plans

In 2005, prior to the initial public offering of our common units, our Board adopted the Boardwalk Pipeline Partners, LP Long-Term Incentive Plan. The following table provides certain information as of December 31, 2017, with respect to this plan:
Plan categoryNumber of securities to be issued upon exercise of outstanding options, warrants and rightsWeighted-average exercise price of outstanding options, warrants and rightsNumber of securities remaining available for future issuance under equity compensation plan (excluding securities reflected in the first column)
Equity compensation plans approved by security holders
N/A
Equity compensation plans not approved by security holders
N/A3,450,060

Note 11 in Part II, Item 8 of this Report contains more information regarding our equity compensation plan.


115



Item 13. Certain Relationships and Related Transactions, and Director Independence
It is our Board’s written policy that any transaction, regardless of the size or amount involved, involving us or any of our subsidiaries in which any related person had or will have a direct or indirect material interest shall be reviewed by, and shall be subject to approval or ratification by our Conflicts Committee. “Related person” means our general partner and its directors and executive officers, holders of more than 5% of our units, and in each case, their “immediate family members,” including any child, stepchild, parent, stepparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law, or sister-in-law, and any person (other than a tenant or employee) sharing their household. In order to effectuate this policy, our General Counsel reviews all such transactions and reports thereon to the Conflicts Committee for its consideration. Our General Counsel also determines whether any such transaction presents a potential conflict of interest under our partnership agreement and, if so, presents the transaction to our Conflicts Committee for its consideration. In the event of a continuing service provided by a related person, the transaction is initially approved by the Conflicts Committee but may not be subject to subsequent approval. However, the Board approves the Partnership’s annual operating budget which separately states the amounts expected to be charged by related parties or affiliates for the following year. No new service transactions were reviewed for approval by the Conflicts Committee during 2017 nor were there any service transactions where the policy was not followed.

Distributions are approved by the Board on a quarterly basis prior to declaration. Note 15 in Part II, Item 8 of this Report contains more information regarding our related party transactions.

See Item 10, We are omitting disclosure under this item because we meet the conditions set forth in General Instructions I(1) (a) and (b) of Form 10-KOur Independent Directors for information regarding director independence..

116



Item 14. Principal AccountingAccountant Fees and Services

Audit Fees and Services

Deloitte & Touche LLP (Deloitte & Touche) (PCAOB ID No. 34) has served as our auditor since our inception in 2005, and our predecessors since 2003.predecessors' auditor from 2003 to 2005. The following table presents fees billed by Deloitte & Touche LLP and its affiliates for professional services rendered to us and our subsidiaries in 20172023 and 20162022 by category as described in the notes to the table (in millions):
20232022
Audit fees (1)
$3.2 $2.7 
Audit related fees (2)
0.1 0.1 
Total$3.3 $2.8 
 2017 2016
Audit fees (1)
$2.5
 $2.5
Audit related fees (2)
0.1
 0.1
Total$2.6
 $2.6
(1)Includes the aggregate fees and expenses for annual financial statement audit and quarterly financial statement reviews.
(1)Includes the aggregate fees and expenses for annual financial statement audit and quarterly financial statement reviews.
(2)Includes the aggregate fees and expenses for services that were reasonably related to the performance of the financial statement audits or reviews described above and not included under Audit fees above, mainly including consents, comfort letters and audits of employee benefits plans.
(2)Includes the aggregate fees and expenses for services that were reasonably related to the performance of the financial statement audits or reviews described above and not included under Audit fees above, mainly including consents, comfort letters and audits of employee benefits plans.

Auditor Engagement Pre-Approval Policy

In orderWe are a wholly owned indirect subsidiary of Loews and the Loews Audit Committee has responsibility for the appointment, compensation and oversight of the independent external audit firm retained to audit our financial statements and the audit fee negotiations associated with their retention. To assure the continued independence of our independent auditor, currently Deloitte & Touche, LLP, the Loews Audit Committee has adopted a policy requiring its pre-approval of all audit and non-audit services performed for us and our subsidiaries by the independent auditor. Under this policy, the Loews Audit Committee annually pre-approves certain limited, specified recurring services which may be provided by Deloitte & Touche, subject to maximum dollar limitations. All other engagements for services to be performed by Deloitte & Touche must beare specifically pre-approved by the Loews Audit Committee, or a designated committee member to whom this authority hashad been delegated.

SinceUnder that policy, the formation of the Audit Committee and its adoption of this policy in November 2005, theLoews Audit Committee, or a designated member, has pre-approved all engagements by us and our subsidiaries for services of Deloitte & Touche during 2023, including the terms and fees thereof, and the Loews Audit Committee concluded that all such engagements were compatible with the continued independence of Deloitte & Touche in serving as our independent auditor.

11774




PART IV


Item 15. ExhibitsExhibit and Financial Statement Schedules

(a) 1. Financial Statements

Included in Item 8 of this Report:Annual Report on Form 10-K:
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets at December 31, 20172023 and 20162022
Consolidated Statements of Income for the years ended December 31, 2017, 20162023, 2022 and 20152021
Consolidated Statements of Comprehensive Income for the years ended December 31, 2017, 20162023, 2022 and 20152021
Consolidated Statements of Cash Flows for the years ended December 31, 2017, 20162023, 2022 and 20152021
Consolidated Statements of Changes in EquityPartners' Capital for the years ended December 31, 2017, 20162023, 2022 and 20152021
Notes to Consolidated Financial Statements



(a) 2. Financial Statement Schedules

Schedule II not material.
None.

75

























(a) 3. Exhibits

The following documents are filed or furnished as exhibits to this report:
Exhibit
Number
Description
Exhibit
Number
3.1
Description
3.1
3.2
3.34.1
3.4
3.5
3.6
3.7
3.8
3.9
3.10
4.1
4.2
4.3
4.4
4.54.4
4.6
4.7


Exhibit
Number
Description
4.8
4.9
4.10
4.11
4.12
4.134.5
4.14
4.154.6
4.164.7

4.174.8
4.184.9

10.14.10
4.11
76


Exhibit
Number
Description
4.12
10.1
  ***10.2
  ***10.3
  ***10.4
  ***10.5
Boardwalk Pipeline Partners Unit Appreciation Rights and Cash Bonus Plan (Incorporated by reference to Exhibits 10.1 and 10.2 to the Registrant’s Current Report on Form 8-K filed on December 17, 2010).
  ***10.6


Exhibit
Number
Description
  ***10.7
  ***10.8
  ***10.9
 ***10.10

10.11

10.12
10.13
10.14
10.1510.3

10.1610.4

10.1710.5
*12.110.6
77


Exhibit
Number
Description
10.7
*21.122.1
*23.1


*31.1
Exhibit
Number
Description
*31.1
*31.2
**32.1
**32.2
*101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
*101.SCHInline XBRL Taxonomy Extension Schema Document
*101.CALInline XBRL Taxonomy Calculation Linkbase Document
*101.DEFInline XBRL Taxonomy Extension Definitions Document
*101.LABInline XBRL Taxonomy Label Linkbase Document
*101.PREInline XBRL Taxonomy Presentation Linkbase Document
*104
Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
  * Filed herewith
 **
**
Furnished herewith
*** Management contract or compensatory plan or arrangement
(1)  The Services Agreements between Gulf South Pipeline Company, LP (now known as Gulf South Pipeline Company, LLC) and Loews Corporation and between Boardwalk Pipelines, LP (formerly known as Boardwalk Pipelines, LLC) and Loews Corporation are not filed because they are identical to exhibitExhibit 10.1 except for the identities of Gulf South Pipeline Company, LPLLC and Boardwalk Pipelines, LLC and the date of the agreement.



SIGNATURE

Item 16. Form 10-K Summary

We are omitting disclosure under this item as it is provided elsewhere in this Report.


78


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Boardwalk Pipeline Partners, LP
By: Boardwalk GP, LP
its general partner
By: Boardwalk GP, LLC
its general partner
Dated:February 6, 2024By:/s/  Steven A. Barkauskas
Dated:February 15, 2018By:/s/  Jamie L. BuskillSteven A. Barkauskas
Jamie L. Buskill
Senior Vice President and Chief Financial and Administrative Officer and Treasurer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the date indicated.

Dated:
Dated:February 15, 20186, 2024
/s/  Stanley C. Horton                                           
Stanley C. Horton
President, Chief Executive Officer and Director
(principal executive officer)
Dated:February 15, 20186, 2024
/s/  Jamie L. BuskillSteven A. Barkauskas                      
Jamie L. Buskill
Senior Vice President, Chief Financial and Administrative Officer and Treasurer
(principal financial officer)
Dated:February 15, 2018/s/  Steven A. Barkauskas
Steven A. Barkauskas
Senior Vice President, Chief Financial Officer and Director
(principal financial officer)
Dated:February 6, 2024/s/  Christine Fernandez
Christine Fernandez
Vice President,
Controller and Chief Accounting Officer

(principal accounting officer)
Dated:February 15, 2018/s/  William R. Cordes
William R. Cordes
Director
Dated:February 15, 20186, 2024
/s/  ThomasMichael E. HylandMcMahon                                
ThomasMichael E. Hyland
McMahon
Senior Vice President, General Counsel, Secretary and
Director
Dated:February 15, 20186, 2024/s/  Peter W. Keegan
Peter W. Keegan
Director
Dated:February 15, 2018
/s/  Arthur L. Rebell
Arthur L. Rebell
Director
Dated:February 15, 2018
/s/  Mark L. Shapiro
Mark L. Shapiro
Director
Dated:February 15, 2018/s/  Kenneth I. Siegel
Kenneth I. Siegel

Director,
Chairman of the Board
Dated:February 15, 20186, 2024
/s/  Andrew H.Benjamin J. Tisch
Benjamin J. Tisch
Director
Dated:
Andrew H. Tisch
February 6, 2024
/s/  Jane Wang
Jane Wang
Director


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