IGC-Appendix D Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX D - Supplier Reservation Costs Supplier Reservation Costs November 1, 1998 through October 31, 1999 I. Reserved Commodity Quantities a. Monthly Baseload Reserved Quantity (Dth/Day) System Central/ Month North/East Terre Haute Greensburg South November, 1998 30,383 36,798 1,484 2,984 December, 1998 69,962 45,000 1,461 5,000 January, 1999 79,640 45,000 2,450 5,000 February, 1999 79,502 45,000 1,960 5,000 March, 1999 25,955 43,000 1,500 2,000 April, 1999 73,500 28,000 1,200 5,000 May, 1999 73,500 13,000 1,200 5,000 June, 1999 72,015 13,000 757 5,000 July, 1999 72,064 13,000 0 5,000 August, 1999 57,020 13,000 771 5,000 September, 1999 57,025 12,000 757 5,000 October, 1999 79,992 3,885 0 1,295 Buyer and Seller agree that all or some portion of the quantities identified as Monthly Baseload Reserved Quantities may be provided at fixed or collared prices mutually agreed upon pursuant to pricing for Other Purchases under Appendix E. APPENDIX D - Supplier Reservation Costs b. Daily Swing Reserved Quantity (Dth/Day) System Central/ Month North/East Terre Haute Greensburg South November, 1998 154,810 78,722 4,644 43,192 December, 1998 145,578 95,722 8,116 41,192 January, 1999 135,900 95,722 7,166 41,192 February, 1999 136,038 95,722 7,656 41,192 March, 1999 167,623 84,722 4,818 44,122 April, 1999 137,078 25,327 2,628 16,066 May, 1999 137,078 42,327 2,002 13,000 June, 1999 69,913 32,000 1,903 11,000 July, 1999 32,864 35,500 2,460 5,500 August, 1999 80,908 38,500 1,689 5,500 September, 1999 112,981 40,300 2,509 16,066 October, 1999 90,014 37,415 5,322 17,705 Buyer and Seller agree that all or some portion of the quantities identified as Daily Swing Reserved Quantities may be provided at fixed or collared prices mutually agreed upon pursuant to pricing for Other Purchases under Appendix E. II. Applicable Reservation Rates ($/Dth/Day) System Winter Months (Nov.- Mar.) Summer Months (Apr.- Oct.) Monthly Daily Monthly Daily Index Index Index Index Reserved Reserved Reserved Reserved Quantity Quantity Quantity Quantity North/East $0.0007 $0.0130 $0.0122 $0.0122 Central/Terre $0.0012 $0.0148 $0.0123 $0.0126 Haute Greensburg $0.0010 $0.0144 $0.0132 $0.0142 South $0.0012 $0.0148 $0.0123 $0.0126 APPENDIX D - Supplier Reservation Costs Assignment/Agency Administration of Supply Agreements Buyer and Seller agree that quantities reserved under supply reservation contracts entered into by Buyer prior to April 1, 1996, and for which Seller has accepted assignment or agency administration duties, shall be included in the Reserved Commodity Quantities with Applicable Reservation Rates as set forth in the original supply reservation contracts. Amendment Seller and Buyer agree that this Appendix D may be amended from time to time by mutual agreement of the Parties, which ultimately will be memorialized in a revised Appendix D. PROLIANCE ENERGY, LLC INDIANA GAS COMPANY, INC. By: /s/ Terry F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix J.4 Gas Sales And Portfolio Administration Agreement November 1,1998 APPENDIX J.4 - Winter Delivery Service 4 Winter Delivery Service 4 TGT ("WDS4") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with WDS4 with the following delivered service entitlements: Contract Months Max Nominated Daily Qty November 50,000 Dth/day December 50,000 Dth/day January 50,000 Dth/day February 50,000 Dth/day March 50,000 Dth/day April - October 0 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 7,550,000 0 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's Central system. 3. Buyer shall pay Seller as follows: a. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. b. For WDS4 Variable Costs: Variable Cost Rates and Fuels under Texas Gas FT rate schedule and other applicable costs, if any as billed. c. For WDS4 Demand Costs: Texas Gas Demand Costs under Rate Schedule FT and other applicable pipeline costs, if any as billed. 4. WDS4 service expires October 31, 2000. 5. Sellers provisions of WDS4 shall be subject to the provisions of service reflected in Texas Gas FT tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix J.4 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix J.4 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix J.5 Gas Sales And Portfolio Administration Agreement November 1,1998 APPENDIX J.5 - Winter Delivery Service 5 Winter Delivery Service 5 TGT ("WDS5") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with WDS5 with the following delivered service entitlements: Contract Months Max Nominated Daily Qty November 13,000 Dth/day December 13,000 Dth/day January 13,000 Dth/day February 13,000 Dth/day March 13,000 Dth/day April - October 0 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 1,963,000 0 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's Central system. 3. Buyer shall pay Seller as follows: a. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. b. For WDS5 Variable Costs: Variable Cost Rates and Fuels under Texas Gas FT rate schedule and other applicable costs, if any as billed. c. For WDS5 Demand Costs: Texas Gas Demand Costs under Rate Schedule FT and other applicable pipeline costs, if any as billed. 4. WDS5 service expires October 31, 1999. 5. Sellers provisions of WDS5 shall be subject to the provisions of service reflected in Texas Gas FT tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services Amendment Seller and Buyer agree that this Appendix J.5 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix J.5 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.11 Gas Sales And Portfolio Administration Agreement March 1, 1999 APPENDIX K.11 - Annual Delivery Service 11 Annual Delivery Service 11 ("ADS11") 1.Starting March 1, 1999, consistent with the Buyer's supply plans, Seller shall provide Buyer with ADS11 with the following delivered Service entitlements: Contract Months Maximum Daily ADS11 Maximum Monthly ADS11 March - February 51,431 Dth/day 51,431 Dth times the number of days in the month. 2. Delivery of these volumes will be into the Northeast system. 3. Buyer shall pay Seller as follows: a. For ADS11 Commodity as follows: Purchase quantities will be determined pursuant to Appendix E pricing. b. For ADS11 Variable Costs: Variable cost of $.0280/Dth Fuels under applicable tariffs for Panhandle Eastern EFT and other applicable pipeline costs if any. c. For ADS11 Demand Costs: Demand cost of $.3680/Dth/day for the month of March 1999 and $.4059/Dth/day thereafter thru the term of this Appendix and other applicable pipeline costs if any. 4.This ADS11 service expires March 31, 2003. 5.Sellers provisions of ADS11 shall be subject to the provisions of service reflected in Panhandle Eastern EFT tariffs, as well as other Panhandle Eastern FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix K.11 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.11. PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.6 Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX K.6 - Annual Delivery Service 6 Annual Delivery Service 6 TGT ("ADS6") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with ADS6 with the following delivered service entitlements: Contract Months Max Nominated Max Unnominated Total MDQ Daily Qty Daily Qty November 23,240 Dth/day 33,553 Dth/day 56,793 Dth/day December 23,240 Dth/day 33,553 Dth/day 56,793 Dth/day January 23,240 Dth/day 33,553 Dth/day 56,793 Dth/day February 23,240 Dth/day 33,553 Dth/day 56,793 Dth/day March 23,240 Dth/day 33,553 Dth/day 56,793 Dth/day April 15,109 Dth/day 22,455 Dth/day 37,565 Dth/day May 15,109 Dth/day 15,109 Dth/day June 15,109 Dth/day 15,109 Dth/day July 15,109 Dth/day 15,109 Dth/day August 15,109 Dth/day 15,109 Dth/day September 15,109 Dth/day 15,109 Dth/day October 15,109 Dth/day 29,166 Dth/day 44,275 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 4,500,000 2,242,666 Unnominated Winter Seasonal Qty 990,666 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's Central system. 3. Buyer shall pay Seller as follows: a. For Unnominated Quantities: Summer purchase quantities will be determined jointly by the parties prior to April 1 of each year to replace quantities delivered during the prior winter season. During each summer month, Buyer shall pay Seller one seventh of the summer purchase quantity times the Texas Gas Monthly Index price. b. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. c. For ADS6 Variable Costs: Variable Cost Rates and Fuels under Texas Gas NNS rate schedule and other applicable costs, if any as billed. d. For ADS6 Demand Costs: Texas Gas Demand Costs under Rate Schedule NNS and other applicable pipeline costs, if any as billed. 4. This ADS6 service expires October 31, 2002. 5. Sellers provisions of ADS6 shall be subject to the provisions of service reflected in Texas Gas NNS tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services Amendment Seller and Buyer agree that this Appendix K.6 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.6 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.7 Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX K.7 - Annual Delivery Service 7 Annual Delivery Service 7 TGT ("ADS7") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with ADS7 with the following delivered service entitlements: Contract Months Max Nominated Max Unnominated Total MDQ Daily Qty Daily Qty November 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day December 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day January 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day February 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day March 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day April 15,109 Dth/day 22,456 Dth/day 57,565 Dth/day May 15,109 Dth/day 15,109 Dth/day June 15,109 Dth/day 15,109 Dth/day July 15,109 Dth/day 15,109 Dth/day August 15,109 Dth/day 15,109 Dth/day September 15,109 Dth/day 15,109 Dth/day October 15,109 Dth/day 29,166 Dth/day 44,275 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 4,500,000 2,242,667 Unnominated Winter Seasonal Qty 990,667 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's Central system. 3. Buyer shall pay Seller as follows: a. For Unnominated Quantities: Summer purchase quantities will be determined jointly by the parties prior to April 1 of each year to replace quantities delivered during the prior winter season. During each summer month, Buyer shall pay Seller one seventh of the summer purchase quantity times the Texas Gas Monthly Index price. b. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. c. For ADS7 Variable Costs: Variable Cost Rates and Fuels under Texas Gas NNS rate schedule and other applicable costs, if any as billed. d. For ADS7 Demand Costs: Texas Gas Demand Costs under Rate Schedule NNS and other applicable pipeline costs, if any as billed. 4.This ADS7 service expires October 31, 2000. 5.Sellers provisions of ADS7 shall be subject to the provisions of service reflected in Texas Gas NNS tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services Amendment Seller and Buyer agree that this Appendix K.7 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.7 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.8 Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX K.8 - Annual Delivery Service 8 Annual Delivery Service 8 TGT ("ADS8") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with ADS8 with the following delivered service entitlements: Contract Months Max Nominated Max Unnominated Total MDQ Daily Qty Daily Qty November 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day December 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day January 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day February 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day March 23,241 Dth/day 33,553 Dth/day 56,794 Dth/day April 15,109 Dth/day 16,777 Dth/day 37,565 Dth/day May 15,109 Dth/day 15,109 Dth/day June 15,109 Dth/day 15,109 Dth/day July 15,109 Dth/day 15,109 Dth/day August 15,109 Dth/day 15,109 Dth/day September 15,109 Dth/day 15,109 Dth/day October 15,109 Dth/day 23,487 Dth/day 44,276 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 4,500,000 2,242,667 Unnominated Winter Seasonal Qty 990,667 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's Central system. 3. Buyer shall pay Seller as follows: a. For Unnominated Quantities: Summer purchase quantities will be determined jointly by the parties prior to April 1 of each year to replace quantities delivered during the prior winter season. During each summer month, Buyer shall pay Seller one seventh of the summer purchase quantity times the Texas Gas Monthly Index price. b. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. c. For ADS8 Variable Costs: Variable Cost Rates and Fuels under Texas Gas NNS rate schedule and other applicable costs, if any as billed. d. For ADS8 Demand Costs: Texas Gas Demand Costs under Rate Schedule NNS and other applicable pipeline costs, if any as billed. 4.This ADS8 service expires October 31, 1999. 5.Sellers provisions of ADS8 shall be subject to the provisions of service reflected in Texas Gas NNS tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix K.8 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.8 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.9 Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX K.9 - Annual Delivery Service 9 Annual Delivery Service 9 TGT ("ADS9") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with ADS9 with the following delivered service entitlements: Contract Months Max Nominated Daily Qty November 31,000 Dth/day December 31,000 Dth/day January 31,000 Dth/day February 31,000 Dth/day March 31,000 Dth/day April 10,000 Dth/day May 10,000 Dth/day June 10,000 Dth/day July 10,000 Dth/day August 10,000 Dth/day September 10,000 Dth/day October 10,000 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 4,681,000 2,140,000 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's South system. 3. Buyer shall pay Seller as follows: a. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. b. For ADS9 Variable Costs: Variable Cost Rates and Fuels under Texas Gas FT rate schedule and other applicable costs, if any as billed. c. For ADS9 Demand Costs: Texas Gas Demand Costs under Rate Schedule FT and other applicable pipeline costs, if any as billed. 4. This ADS9 service expires October 31, 2001. 5. Sellers provisions of ADS9 shall be subject to the provisions of service reflected in Texas Gas FT tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix K.9 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.9 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix K.10 Gas Sales And Portfolio Administration Agreement November 1, 1998 APPENDIX K.10 - Annual Delivery Service 10 Annual Delivery Service 10 TGT ("ADS10") 1. Starting November 1, 1998, consistent with Buyer's supply plans, Seller shall provide Buyer with ADS10 with the following delivered service entitlements: Contract Months Max Nominated Max Unnominated Total MDQ Daily Qty Daily Qty November 15,192 Dth/day 26,495 Dth/day 41,687 Dth/day December 15,192 Dth/day 26,495 Dth/day 41,687 Dth/day January 15,192 Dth/day 26,495 Dth/day 41,687 Dth/day February 15,192 Dth/day 26,495 Dth/day 41,687 Dth/day March 15,192 Dth/day 26,495 Dth/day 41,687 Dth/day April 11,066 Dth/day 17,417 Dth/day 28,483 Dth/day May 11,066 Dth/day 11,066 Dth/day June 11,066 Dth/day 11,066 Dth/day July 11,066 Dth/day 11,066 Dth/day August 11,066 Dth/day 11,066 Dth/day September 11,066 Dth/day 11,066 Dth/day October 11,066 Dth/day 22,716 Dth/day 33,782 Dth/day Maximum Seasonal Qty Nov. - Mar. Apr. - Oct. 3,462,143 1,200,000 Unnominated Winter Seasonal Qty 1,168,151 2. Unless otherwise agreed upon, Seller shall provide entitlements to Buyer's South system. 3. Buyer shall pay Seller as follows: a. For Unnominated Quantities: Summer purchase quantities will be determined jointly by the parties prior to April 1 of each year to replace quantities delivered during the prior winter season. During each summer month, Buyer shall pay Seller one seventh of the summer purchase quantity times the Texas Gas Monthly Index price. b. For Nominated Commodity as follows: Purchase quantities will be determined jointly by the parties and priced pursuant to Appendix E. c. For ADS10 Variable Costs: Variable Cost Rates and Fuels under Texas Gas NNS rate Schedule and other applicable costs, if any as billed. d. For ADS10 Demand Costs: Texas Gas Demand Costs under Rate Schedule NNS and other applicable pipeline costs, if any as billed. 4.This ADS10 service expires October 31, 2001. 5.Sellers provisions of ADS10 shall be subject to the provisions of service reflected in Texas Gas NNS tariffs, as well as other Texas Gas FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix K.10 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix K.10 PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President IGC-Appendix M.1 Gas Sales And Portfolio Administration Agreement April 1, 1999 APPENDIX M.1 - Summer Delivery Service 1 Summer Delivery Service 1 ("SDS1") 1. Starting April 1, 1999, consistent with the Buyer's supply plans, Seller shall provide Buyer with SDS1 with the following delivered Service entitlements: Contract Months Maximum Daily SDS1 Maximum Monthly SDS1 April - October 30,113 Dth/day 30,113 Dth times the number of days in the month. 2. These delivery service entitlements shall be available at the PEPL-ANR Defiance interconnect, subject to availability, within Buyer's supply plan, of unutilized entitlements at the Indiana Gas Gate on Panhandle Eastern Pipeline. 3. Buyer shall pay Seller as follows: a. For SDS1 Variable Costs: Variable cost of $.005/Dth Fuels under applicable tariffs for Panhandle Eastern EFT. b. For SDS1 Demand Costs: Demand cost of $.1293/Dth/day and other applicable pipeline costs if any. 4. This SDS1 service expires March 31, 2002. 5. Sellers provisions of SDS1 shall be subject to the provisions of service reflected in Panhandle Eastern EFT tariffs, as well as other Panhandle Eastern FERC tariffs as may be applicable to the provision of those services. Amendment Seller and Buyer agree that this Appendix M.1 may be amended from time to time by mutual agreement of the Parties which amendment ultimately will be memorialized in a revised Appendix M.1. PROLIANCE ENERGY, LLC. INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President Gas Sales And Portfolio Administration Agreement IGC-Appendix B November 1, 1998 APPENDIX B - Buyer's Maximum Quantities Maximum Daily Quantities (in Dth) Central/ Month North/East Terre Haute South Greensburg November 374,578 216,381 62,583 6,500 December 491,329 276,381 72,687 13,140 January 491,329 276,381 72,687 13,140 February 475,063 249,381 64,687 9,371 March 386,578 233,381 51,400 6,695 April 254,578 123,895 37,700 13,140 May 215,578 84,184 25,066 4,575 June 175,750 53,327 15,301 2,673 July 104,000 47,398 8,962 2,038 August 123,849 53,327 97,080 2,035 September 205,006 70,327 21,066 13,000 October 232,460 140,000 37,600 5,060 Maximum Seasonal Quantities (in Dth) Central/ Month North/East Terre Haute South Greensburg Summer 1999 15,023,560 8,413,028 1,867,753 365,123 Winter 1998-99 38,774,854 22,422,732 5,202,047 832,026 APPENDIX B - Buyer's Maximum Quantities Amendment Seller and Buyer agree that this Appendix B may be amended as provided in this Agreement, which amendment ultimately will be memorialized in a revised Appendix B. PROLIANCE ENERGY, LLC INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President Gas Sales And Portfolio Administration Agreement IGC-Appendix C November 1, 1998 Appendix C - Portfolio Information I. Contracts and Contract Rates The applicable demand costs shall be determined based upon the rates and charges specified in each Transporter's Tariff, including any applicable direct bills, surcharges, or as other costs specified by the sheets identified below, or other applicable sheets, as all of those sheets may be in effect from time to time, and costs arising under applicable agreements, for the applicable term of these agreements, including the agreements identified below, as well as this Agreement. While Seller and Buyer agree that the identified tariff sheets and agreements are intended to be a complete listing of the applicable tariff sheets and applicable agreements, they further agree that the omission of the reference of one or more sheets or agreements from that list will not affect Buyer's obligation to Seller for rates, charges and costs incurred thereunder. Seller shall provide to Buyer all Transporter refunds for the applicable terms which are received by Seller relative to Contracts or Contract Rates referenced below or relative to any agreements referencing the contracts below. Contract No. Contract Rate 11718 Sheet No. 5 11721 Sheet No. 5 03950 Sheet No. 5 Sheet No. 17 Sheet No. 17A Sheet No. 18 32300 Sheet No. 10 800171 Sheet No. 35 830034 Sheet No. 30 400109 Sheet No. 43 WSS Appendix I PSS Appendix I WDS1 Appendix J.1 WDS2 Appendix J.2 WDS3 Appendix J.3 WDS4 Appendix J.4 WDS5 Appendix J.5 ADS1 Appendix K.1 ADS2 Appendix K.2 ADS3 Appendix K.3 ADS4 Appendix K.4 ADS5 Appendix K.5 ADS6 Appendix K.6 ADS7 Appendix K.7 ADS8 Appendix K.8 ADS9 Appendix K.9 ADS10 Appendix K.10 ADS11 Appendix K.11 PSS2 Appendix L.1 SDS1 Appendix M.1 II. Transportation Credit 1. Seller shall provide to Buyer, as a credit against the Contract Rates, a Transportation Credit ("TC") for the sale from the Buyer to Seller of projected available annual portfolio entitlements. 2. The Transportation Credit shall be calculated from time to time to reflect changes in projected available annual entitlements, based on the following formula: TC = Base TC x Projected Available Annual Entitlements Base Available Annual Entitlements Where: a. Base TC = $1,864,290 b. Base Available Annual Entitlements = 35,843,831 Dth c. Projected Available Annual Entitlements = Total Entitlements - Normal Demand (i) Total Entitlements are the sum of the quantities of longhaul pipeline transportation entitlements reserved by Buyer. (ii) Normal Demand is the projected normal weather quantity of Buyer's firm longhaul pipeline deliveries for firm customers. 3. The TC shall be divided among months based upon the projected available monthly entitlements. Amendment Seller and Buyer agree that this Appendix C may be amended from time to time by mutual agreement of the Parties, which ultimately will be memorialized in a revised Appendix C. PROLIANCE ENERGY LLC INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President Gas Sales And Portfolio Administration Agreement IGC-Appendix E November 1, 1998 Appendix E- Commodity Purchases This Appendix E addresses the gas supply and other variable costs applicable to Nominated Daily Quantities and Balancing Quantities as identified below. For Monthly Baseload Purchases: Buyer shall pay to Seller each Contract Month an amount determined by multiplying the monthly baseload quantities of Gas scheduled for Buyer's purchase under this Agreement during the Contract Month, by a price per MMBtu determined using the first monthly index from Inside FERC's GAS MARKET REPORT, in the table "PRICES OF SPOT GAS DELIVERED TO INTERSTATE PIPELINES" for the applicable zone, specified below, for the applicable month, plus all other applicable variable costs as identified below shall apply. For Daily Swing Purchases: Buyer shall pay to Seller each Contract Month an amount determined by summing all applicable "Daily Amounts" for the Contract Month. A "Daily Amount" shall be calculated for each day during the Contract Month for which daily swing quantities of Gas have been confirmed for purchase. The "Daily Amounts" shall be determined by multiplying (a) the confirmed swing quantities of gas scheduled for the particular day of the Contract Month, by (b) a price per MMBtu determined using the Daily Midpoint Price reported in Gas Daily, in the table "DAILY PRICE SURVEY", for the applicable zone, specified below, for purchases for the applicable day. As to any day for which Gas Daily for any reason (e.g. holidays and weekends) does not publish the above referenced prices, the applicable prices shall be that utilized for the last prior day such is published. In addition all other applicable variable costs as identified below shall apply. For Other Purchases: For any purchases not covered by a specified pricing method, or for fixed price quantities, pricing shall be as negotiated and mutually agreed to in writing by the Parties. For Summer Storage Refill: For summer refill of leased storage, Buyer shall pay to Seller an amount based on averaging the seven summer monthly indices for the applicable supply area, and based upon presuming storage refill quantities to be equally split between the summer months. For summer refill of company storage, the parties will agree on the extent to which an index average method will be used, after consideration of the operational scheduling needs of company storage. In addition, all other applicable variable costs as identified below shall apply. For Storage Withdrawals: For quantities of storage withdrawals for which Buyer has previously paid for commodity, applicable storage withdrawal variable costs as identified below shall apply. For Applicable Indices: System Applicable Monthly Indices North/East PEPL - Texas, Oklahoma ANR - Louisiana Central/Terre Haute Texas Gas - Zone 1 Texas Gas - Zone SL South Texas Gas - Zone 1 Texas Gas - Zone SL Greensburg TETCO - East Louisiana TETCO - West Louisiana TETCO - East Texas TETCO - South Texas System Applicable Daily Indices North/East PEPL - Oklahoma ANR - Louisiana - Onshore South Central/Terre Haute Texas Gas SL - Louisiana - Onshore South Texas Gas (entire Z1)-East Texas-North La. Area Chicago-LDCs, large e-us South Texas Gas SL - Louisiana - Onshore South Texas Gas (entire Z1)-East Texas-North La. Area Greensburg/Westport TETCO (ELA) - Louisiana - Onshore South TETCO (WLA) - Louisiana - Onshore South TETCO (ETX) - East Texas - North La. Area TETCO (STX) - South - Corpus Christi APPENDIX E- Commodity Purchases - Other Variable Costs The other variable costs applicable to Nominated Daily Quantities and Balancing Quantities shall be determined based upon the rates and charges applicable under each transporter's tariff, including the sheets identified below, as well as other applicable sheets, as all of those sheets may be in effect from time to time, and costs arising under applicable agreements, including the agreements identified below, as well as this Agreement. North/East PEPL Contract No. Contract Rate 11718 Sheet No. 5 11721 Sheet No. 5 WSS Appendix I PSS Appendix I WDS1 Appendix J.1 WDS2 Appendix J.2 ADS1 Appendix K.1 ADS2 Appendix K.2 ADS11 Appendix K.11 PSS2 Appendix L.1 SDS1 Appendix M.1 North/East ANR Contract No. Contract Rate 03950 Sheet No. 5 Sheet No. 17 Sheet No. 17A Sheet No. 19 32300 Sheet No. 10 Sheet No. 19 WDS2 Appendix J.2 ADS1 Appendix K.1 Central/Terre Haute System Texas Gas Z-3 Contract No. Contract Rate PSS Appendix I WDS2 Appendix J.2 WDS4 Appendix J.4 WDS5 Appendix J.5 ADS2 Appendix K.2 ADS3 Appendix K.3 ADS6 Appendix K.6 ADS7 Appendix K.7 ADS8 Appendix K.8 South System Texas Gas Z-4 Contract No. Contract Rate ADS3 Appendix K.3 ADS9 Appendix K.9 ADS10 Appendix K.10 Greensburg System Texas Eastern Contract No. Contract Rate 800171 Sheet No. 36 Sheet No. 126 Sheet No. 127 Sheet No. 128 Sheet No. 129 830034 Sheet No. 31 Sheet No. 126 Sheet No. 127 Sheet No. 128 Sheet No. 129 400109 Sheet No. 43 Sheet No. 126 Sheet No. 127 Sheet No. 128 Sheet No. 129 ADS2 Appendix K.2 ADS3 Appendix K.3 While Seller and Buyer agree that the identified tariff sheets and agreements are intended to be a complete listing of the applicable tariff sheets and applicable agreements, they further agree that the omission of the reference of one or more sheets or agreements from that list will not affect Buyer's obligation to Seller for rates, charges and costs incurred thereunder. Amendment Seller and Buyer agree that this Appendix E may be amended from time to time by mutual agreement of the Parties, which ultimately will be memorialized in a revised Appendix E. PROLIANCE ENERGY, LLC INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President Gas Sales And Portfolio Administration Agreement IGC-Appendix G November 1, 1998 G-Notices Invoice Information: Buyer: Seller: Indiana Gas Company, Inc J. Groth Gas Supply Department ProLiance Energy, LLC Attn.: Chris Kershner 135 North Pennsylvania Street 1630 North Meridian Street Suite 800 Indianapolis, IN 46202 Indianapolis, IN 46204-2482 (317) 321-0583 (317) 231-6808 Payments: Buyer: Seller: National City Bank Key Bank For the Account of: For the Account of: Indiana Gas Company, Inc. ProLiance Energy, LLC ABA #041001039 ACCT #6001805116 Supply Plans/Operational/Force Majeure: Buyer: Seller: Supply Plans Supply Plans Chris Kershner Stephen Miner (317) 321-0583 (317) 231-6828 Operational Operational Randy Gary Stephen Miner (317) 321-0507 (317) 231-6828 Force Majeure Force Majeure Randy Gary (317) 321-0507 Brian Azman - (317) 231-6830 Frank Lindsey (317) 321-0334 Stephen Miner - (317) 231-6828 Gas Controller on Duty (317) 321-0535 Terry Peak - (317)231-6804 Indiana Gas Company, Inc. ProLiance Energy, LLC 1630 North Meridian Street 135 North Pennsylvania Street Indianapolis, IN 46202 Suite 800 (317) 321-0787 (Telecopy) Indianapolis, Indiana 46204-2482 (317) 231-6901 (Telecopy) All Other Notices: Buyer: Seller: Gas Supply Department ProLiance Energy , LLC Attn.: Randy Gary Attn: Terry F. Peak 1630 North Meridian Street 135 North Pennsylvania Street Indianapolis, IN 46202 Suite 800 Indianapolis, Indiana 46204-2482 Amendment Seller and Buyer agree that this Appendix G may be amended from time to time as provided in this Agreement, which amendment ultimately will be memorialized in a revised Appendix G. PROLIANCE ENERGY, LLC INDIANA GAS COMPANY, INC. By: /s/ Terrence F. Peak By: /s/ Timothy M. Hewitt Its: Senior Vice President Its: Vice President