Charah Solutions, Inc. 8.50% Se (CHRB) 10-Q 14 Nov 22 2022 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2022	Nov. 01, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-38523
Entity Registrant Name	CHARAH SOLUTIONS, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-4228671
Entity Address, Address Line One	12601 Plantside Drive
Entity Address, City or Town	Louisville
Entity Address, State or Province	KY
Entity Address, Postal Zip Code	40299
City Area Code	502
Local Phone Number	245-1353
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		33,721,705
Entity Central Index Key	0001730346
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock, par value $0.01 per share
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	CHRA
Security Exchange Name	NYSE
8.50% Senior Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	8.50% Senior Notes due 2026
Trading Symbol	CHRB
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash	$ 7,722	$ 24,266
Restricted cash	44,382	34,908
Trade accounts receivable, net	51,533	49,303
Contract assets	26,993	26,844
Inventory	6,899	6,289
Prepaid expenses and other current assets	8,314	6,113
Total current assets	145,843	147,723
Real estate, property and equipment, net	106,079	70,473
Goodwill	62,193	62,193
Intangible assets, net	47,610	53,531
Equity method investments	7	7
Other assets	10,153	10,180
Total assets	371,885	344,107
Current liabilities:
Accounts payable	30,070	30,641
Contract liabilities	5,638	6,199
Capital lease obligations, current portion	9,529	6,979
Notes payable, current maturities	12,108	7,567
Asset retirement obligations, current portion	44,030	27,534
Accrued liabilities	25,354	36,874
Other current liabilities	1,101	460
Total current liabilities	127,830	116,254
Deferred tax liabilities	1,259	949
Contingent payments for acquisitions	1,950	1,950
Asset retirement obligations	32,742	14,879
Asset-based lending credit agreement	8,800	0
Capital lease obligations, less current portion	25,626	19,444
Notes payable, less current maturities	129,335	133,661
Term loan - Related party	16,000	0
Deferred gain and other liabilities	4,310	641
Total liabilities	347,852	287,778
Commitments and contingencies
Mezzanine equity
Series A Preferred Stock — $0.01 par value; 50,000 shares authorized, 26 shares issued and outstanding as of September 30, 2022 and December 31, 2021; aggregate liquidation preference of $36,006 and $32,712 as of September 30, 2022 and December 31, 2021, respectively	41,636	35,532
Stockholders’ equity
Retained losses	(129,681)	(94,679)
Common Stock — $0.01 par value; 200,000 shares authorized 33,722 and 33,408 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively	337	334
Additional paid-in capital	111,482	114,880
Total stockholders’ equity	(17,862)	20,535
Non-controlling interest	259	262
Total equity	(17,603)	20,797
Total liabilities, mezzanine equity and stockholders’ equity	$ 371,885	$ 344,107

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Series A Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Series A Preferred Stock, shares authorized (in shares)	50,000,000	50,000,000
Series A Preferred Stock, shares issued (in shares)	26,000	26,000
Series A Preferred Stock, shares outstanding (in shares)	26,000	26,000
Series A Preferred Stock, aggregate liquidation preference	$ 36,006	$ 32,712
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	33,722,000	33,408,000
Common stock, shares outstanding (in shares)	33,722,000	33,408,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 81,540	$ 84,161	$ 224,701	$ 199,786
Cost of sales	(78,681)	(74,712)	(222,935)	(177,832)
Gross profit	2,859	9,449	1,766	21,954
General and administrative expenses	(9,493)	(9,396)	(27,683)	(28,080)
Gain on sales-type lease	0	0	0	5,568
Gains on sales of real estate, property and equipment, net	2,601	2,998	8,942	6,241
Gain on ARO settlement	978	1,127	4,986	1,127
Other operating expenses from ERT services	(5,847)	(817)	(9,100)	(2,114)
Impairment expense	0	(700)	0	(827)
Operating (loss) income	(8,902)	2,661	(21,089)	3,869
Interest expense, net	(4,534)	(3,541)	(13,574)	(10,090)
Loss on extinguishment of debt	0	(638)	0	(638)
Income (loss) from equity method investment	0	0	0	191
Loss before income taxes	(13,436)	(1,518)	(34,663)	(6,668)
Income tax (benefit) expense	(77)	203	342	432
Net loss	(13,359)	(1,721)	(35,005)	(7,100)
Less (loss) income attributable to non-controlling interest	0	(44)	(3)	30
Net loss attributable to Charah Solutions, Inc.	(13,359)	(1,677)	(35,002)	(7,130)
Deemed and imputed dividends on Series A Preferred Stock	(150)	(148)	(449)	(443)
Series A Preferred Stock dividends	(956)	(1,946)	(4,617)	(6,161)
Net loss attributable to common stockholders	(14,465)	(3,771)	(40,068)	(13,734)
Net loss attributable to common stockholders	$ (14,465)	$ (3,771)	$ (40,068)	$ (13,734)
Net loss attributable to common stockholders per common share:
Basic (in dollars per share)	$ (0.43)	$ (0.12)	$ (1.19)	$ (0.44)
Diluted (in dollars per share)	$ (0.43)	$ (0.12)	$ (1.19)	$ (0.44)
Weighted-average shares outstanding used in loss per common share:
Basic (in shares)	33,722	32,277	33,592	30,955
Diluted (in shares)	33,722	32,277	33,592	30,955

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Total	Common Stock	Additional Paid-In Capital	Retained Losses	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2020	26,000
Beginning balance at Dec. 31, 2020	$ 27,423
Increase (Decrease) in Temporary Equity [Roll Forward]
Deemed and imputed dividends on Series A Preferred Stock	443
Series A Preferred Stock dividends	$ 5,572
Ending balance (in shares) at Sep. 30, 2021	26,000
Ending balance at Sep. 30, 2021	$ 33,438
Balance beginning of period (in shares) at Dec. 31, 2020			30,077,018
Balance beginning of period at Dec. 31, 2020	20,316	$ 19,906	$ 300	$ 108,471	$ (88,865)	$ 410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(7,100)	(7,130)			(7,130)	30
Issuance of common stock (in shares)			2,888,889
Issuance of common stock	13,000	13,000	$ 29	12,971
Distributions	(165)
Shares issued under share-based compensation plans (in shares)			535,417
Shares issued under share-based compensation plans	0	0	$ 6	(6)
Taxes paid related to net settlement of shares (in shares)			(93,518)
Taxes paid related to the net settlement of shares	(512)	(512)	$ (1)	(511)
Share-based compensation expense	1,767	1,767		1,767
Deemed and imputed dividends on Series A Preferred Stock	(443)	(443)		(443)
Series A Preferred Stock dividends	(6,161)	(6,161)		(6,161)
Balance end of period (in shares) at Sep. 30, 2021			33,407,806
Balance end of period at Sep. 30, 2021	$ 20,702	20,427	$ 334	116,088	(95,995)	275
Beginning balance (in shares) at Jun. 30, 2021	26,000
Beginning balance at Jun. 30, 2021	$ 31,141
Increase (Decrease) in Temporary Equity [Roll Forward]
Deemed and imputed dividends on Series A Preferred Stock	148
Series A Preferred Stock dividends	$ 2,149
Ending balance (in shares) at Sep. 30, 2021	26,000
Ending balance at Sep. 30, 2021	$ 33,438
Balance beginning of period (in shares) at Jun. 30, 2021			30,518,917
Balance beginning of period at Jun. 30, 2021	10,748	10,429	$ 305	104,442	(94,318)	319
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(1,721)	(1,677)			(1,677)	(44)
Issuance of common stock (in shares)			2,888,889
Issuance of common stock	13,000	13,000	$ 29	12,971
Share-based compensation expense	769	769		769
Deemed and imputed dividends on Series A Preferred Stock	(148)	(148)		(148)
Series A Preferred Stock dividends	(1,946)	(1,946)		(1,946)
Balance end of period (in shares) at Sep. 30, 2021			33,407,806
Balance end of period at Sep. 30, 2021	$ 20,702	20,427	$ 334	116,088	(95,995)	275
Beginning balance (in shares) at Dec. 31, 2021	26,000
Beginning balance at Dec. 31, 2021	$ 35,532
Increase (Decrease) in Temporary Equity [Roll Forward]
Deemed and imputed dividends on Series A Preferred Stock	$ 6,104
Ending balance (in shares) at Sep. 30, 2022	26,000
Ending balance at Sep. 30, 2022	$ 41,636
Balance beginning of period (in shares) at Dec. 31, 2021	33,408,000		33,407,806
Balance beginning of period at Dec. 31, 2021	$ 20,797	20,535	$ 334	114,880	(94,679)	262
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(35,005)	(35,002)			(35,002)	(3)
Shares issued under share-based compensation plans (in shares)			480,453
Shares issued under share-based compensation plans	0	0	$ 5	(5)
Taxes paid related to net settlement of shares (in shares)			(166,554)
Taxes paid related to the net settlement of shares	(700)	(700)	$ (2)	(698)
Share-based compensation expense	2,371	2,371		2,371
Deemed and imputed dividends on Series A Preferred Stock	(449)	(449)		(449)
Series A Preferred Stock dividends	$ (4,617)	(4,617)		(4,617)
Balance end of period (in shares) at Sep. 30, 2022	33,722,000		33,721,705
Balance end of period at Sep. 30, 2022	$ (17,603)	(17,862)	$ 337	111,482	(129,681)	259
Beginning balance (in shares) at Jun. 30, 2022	26,000
Beginning balance at Jun. 30, 2022	$ 39,915
Increase (Decrease) in Temporary Equity [Roll Forward]
Deemed and imputed dividends on Series A Preferred Stock	$ 1,721
Ending balance (in shares) at Sep. 30, 2022	26,000
Ending balance at Sep. 30, 2022	$ 41,636
Balance beginning of period (in shares) at Jun. 30, 2022			33,721,705
Balance beginning of period at Jun. 30, 2022	(3,972)	(4,231)	$ 337	111,754	(116,322)	259
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(13,359)	(13,359)			(13,359)	0
Share-based compensation expense	834	834		834
Deemed and imputed dividends on Series A Preferred Stock	(150)	(150)		(150)
Series A Preferred Stock dividends	$ (956)	(956)		(956)
Balance end of period (in shares) at Sep. 30, 2022	33,722,000		33,721,705
Balance end of period at Sep. 30, 2022	$ (17,603)	$ (17,862)	$ 337	$ 111,482	$ (129,681)	$ 259

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ (35,005)	$ (7,100)
Adjustments to reconcile net loss to net cash and restricted cash (used in) provided by operating activities:
Depreciation and amortization	20,398	18,578
Loss on extinguishment of debt	0	638
Paid-in-kind interest on long-term debt	0	2,844
Impairment expense	0	827
Amortization of debt issuance costs	1,732	590
Deferred income taxes	310	432
Gain on sales-type lease	0	(5,568)
Gains on sales of real estate, property and equipment	(8,664)	(7,638)
Income from equity method investment	0	(191)
Non-cash share-based compensation	2,371	1,767
Gain on interest rate swap	0	(190)
Interest Rate Swap Derivative Break Fee	0	(745)
Gain on ARO settlements	(4,986)	(1,127)
Realization of deferred gain on ERT project performance	(167)	0
Increase (decrease) in cash and restricted cash due to changes in:
Trade accounts receivable	(2,137)	5,288
Contract assets and liabilities	(710)	2,667
Inventory	(610)	(147)
Accounts payable	727	9,471
Asset retirement obligation	(25,133)	(4,654)
Other assets and liabilities	(13,863)	(13,714)
Net cash and restricted cash (used in) provided by operating activities	(65,737)	2,028
Cash flows from investing activities:
Net proceeds from the sales of real estate, property and equipment	11,951	10,114
Purchases of property and equipment	(3,655)	(7,024)
Cash and restricted cash received from ERT transactions	38,239	34,900
Payments of working capital adjustment and other items for the sale of subsidiary	0	(7,367)
Distribution received from equity method investment	0	1,015
Net cash and restricted cash provided by investing activities	46,535	31,638
Cash flows from financing activities:
Proceeds from long-term debt	3,023	156,301
Proceeds on Term loan - Related party	16,000	0
Principal payments on long-term debt	(7,908)	(134,613)
Payments of debt issuance costs	(677)	(10,912)
Principal payments on capital lease obligations	(6,406)	(2,920)
Taxes paid related to net settlement of shares	(700)	(512)
Proceeds from issuance of common stock	0	13,000
Distributions to non-controlling interest	0	(165)
Net cash and restricted cash provided by financing activities	12,132	8,176
Net (decrease) increase in cash and restricted cash	(7,070)	41,842
Cash and restricted cash, beginning of period	59,174	29,211
Cash and restricted cash, end of period	52,104	71,053
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	11,652	5,386
Cash paid during the period for taxes	98	831
Supplemental disclosures and non-cash investing and financing transactions:
Sale of structural fill asset through a sales-type lease	0	6,000
Proceeds from the sale of equipment in accounts receivable, net	93	1,252
Series A Preferred Stock dividends payable included in accrued expenses	956	1,946
Deemed and imputed dividends on Series A Preferred Stock	6,104	443
Equipment acquired through capital leases	15,138	11,980
Property and equipment included in accounts payable and accrued expenses	95	205
As reported within the unaudited condensed consolidated balance sheet:
Cash	7,722	22,400
Restricted cash	44,382	48,653
Total cash and restricted cash as presented in the balance sheet	52,104	71,053
Syndicated Credit Facility
Cash flows from financing activities:
Net proceeds on the line of credit	0	(12,003)
Payments on asset-based lending credit agreement	0	(85,820)
Supplemental disclosures and non-cash investing and financing transactions:
Gross proceeds from lines of credit	0	73,817
Gross payments on lines of credit	0	(85,820)
Credit Agreement
Cash flows from financing activities:
Proceeds on asset-based lending credit agreement	13,000	0
Payments on asset-based lending credit agreement	(4,200)	0
Supplemental disclosures and non-cash investing and financing transactions:
Gross payments on lines of credit	$ (4,200)	$ 0

Nature of Business and Basis of

Nature of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business and Basis of Presentation	Nature of Business and Basis of Presentation Organization Charah Solutions, Inc. (together with its wholly-owned subsidiaries, “Charah Solutions,” the “Company,” “we,” “us, or “our”) is a holding company formed in Delaware in January 2018. The Company's majority shareholder is Bernhard Capital Partners Management, LP and its affiliates (collectively, “BCP”). As of September 30, 2022, BCP owns approximately 60% of the total voting power of our outstanding shares of common stock and the outstanding Series A Preferred Stock (“Preferred Stock”) on an as-converted basis. BCP owns all of the outstanding shares of Preferred Stock, and it is convertible at BCP's option at any time into shares of common stock. Description of Business Operations The Company is a leading national service provider of mission-critical environmental services and byproduct recycling to the power generation industry, enabling our customers to address challenges related to the remediation of coal ash ponds and landfills at open and closed power plant sites while continuously operating and providing necessary electric power to communities nationwide. Services offered include a suite of remediation and compliance services, byproduct services, raw material sales and Environmental Risk Transfer (“ERT”) services. The Company has corporate offices in Kentucky and North Carolina and principally operates in the eastern and mid-central United States. Under the Jumpstart Our Business Startups Act (the “JOBS Act”), the Company meets the definition of an “emerging growth company,” which allows the Company to have an extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. The Company intends to take advantage of the reduced reporting requirements and exemptions, including the longer phase-in periods for adopting new or revised financial accounting standards under Section 107 of the JOBS Act until the Company is no longer an emerging growth company. Among other things, we are not required to provide an auditor attestation report on the assessment of the internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act of 2002 and our disclosure obligations regarding executive compensation may be reduced. We may take advantage of these provisions until the last day of our fiscal year following the fifth anniversary of the IPO, or December 31, 2023. However, if certain events occur before the end of such five-year period, including if we become a “large accelerated filer,” our annual gross revenue exceeds $1.07 billion, or we issue more than $1.0 billion of non-convertible debt in any three-year period, we will cease to be an emerging growth company before the end of such five-year period. Basis for Presentation The Company’s fiscal year ends December 31. The accompanying unaudited condensed consolidated financial statements include the assets, liabilities, stockholders’ equity and results of operations of the Company and its consolidated subsidiaries. Intercompany transactions and balances have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with rules and regulations of the Securities and Exchange Commission for quarterly reports on Form 10-Q. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, which consist of normal recurring adjustments. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021. Going Concern The accompanying unaudited condensed consolidated financial statements are prepared in accordance with generally accepted accounting principles applicable to a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. In response to recurring operating losses and liquidity needs, the Company has frequently secured additional financing or equity contributions from its majority shareholder, BCP, to fund the Company’s operations and meet working capital requirements. BCP is not obligated to provide future funding or equity contributions to the Company were they to be needed. As discussed in Note 9, Long-term Debt, on August 15, 2022, the Company, through its wholly-owned special purpose vehicle subsidiary Gibbons Creek Environmental Redevelopment Group (“GCERG”), entered into a term loan agreement (the “Term Loan Agreement”) with BCP that provides for a delayed-draw term loan in an aggregate principal amount of $20,000. Additionally, as discussed in Note 17, Subsequent Events, on November 14, 2022, the Company entered into an investment agreement with BCP to sell 30 (thirty thousand) shares of Series B Preferred Stock for gross proceeds of $30,000 and resulted in net proceeds to the Company of $28,800. Segment Information The Company operates as one reportable segment, reflecting the suite of end-to-end services we offer our utility partners and how our Chief Operating Decision Maker (“CODM”) reviews consolidated financial information to evaluate results of operations, assess performance and allocate resources. Due to the nature of the Company’s business, the Company's Chief Executive Officer, who is also the CODM, evaluates the performance of the Company and allocates resources of the Company based on consolidated gross profit, general and administrative expenses, balance sheet, liquidity, capital spending, safety statistics and business development reports for the Company as a whole. Since the Company has a single operating segment, all required financial segment information can be found in the unaudited condensed consolidated financial statements. We provide the following services through our one segment: remediation and compliance services, byproduct services, raw material sales and ERT services. Remediation and compliance services are associated with our customers’ need for multi-year environmental improvement and sustainability initiatives, whether driven by regulatory requirements, power generation customer initiatives or consumer expectations and standards. Byproduct services consist of recurring and mission-critical coal ash management and operations for coal-fired power generation facilities while also supporting both our power generation customers’ desire to recycle their recurring and legacy volumes of coal combustion residuals (“CCRs”), commonly known as coal ash, and our ultimate end customers’ need for high-quality, cost-effective supplemental cementitious materials (“SCMs”) that provide a sustainable, environmentally-friendly substitute for Portland cement in concrete. Our raw material sales provide customers with the raw materials essential to their business while also providing the sourcing, logistics, and management needed to facilitate these raw material transactions around the globe. ERT services represent an innovative solution designed to meet our coal-fired plant energy providers’ evolving and increasingly complex plant closure and environmental remediation needs. These customers need to retire and decommission older or underutilized assets while maximizing the assets’ value and improving the environment. Our ERT services manage the sites’ environmental remediation requirements, benefiting the communities and lowering the coal-fired plant energy providers’ costs. Impact of the COVID-19 Pandemic In March 2020, the World Health Organization categorized the disease caused by a novel coronavirus (“COVID-19”) to be a pandemic. Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that while it is reasonably possible that the virus could have a negative effect on the Company’s financial position and results of its operations, the specific impact is not readily determinable as of the date of these financial statements. The financial statements do not include any adjustments that might result from the outcome of this uncertainty. On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), which includes modifications to the limitation on business interest expense and net operating loss carryforward provisions and provided a payment delay of certain employer payroll taxes during 2020. The Company deferred $1,637 of employer payroll taxes otherwise due in 2020, with 50% paid in the year ended December 31, 2021 and the remaining 50% due by December 31, 2022.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2022
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , requiring all leases to be recognized on the balance sheet as a right-of-use asset and a lease liability unless the lease is a short-term lease (generally a lease with a term of 12 months or less). At the commencement date of the lease, the Company will recognize: (i) a lease liability for the Company’s obligation to make payments under the lease agreement, measured on a discounted basis; and (ii) a right-of-use asset that represents the Company’s right to use, or control the use of, the specified asset for the lease term. This ASU originally required recognition and measurement of leases at the beginning of the earliest period presented using a modified retrospective transition method. In July 2018, the FASB issued ASU No. 2018-11, which provided an additional (and optional) transition method that permits the application of this ASU at the adoption date with recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. In June 2020, the FASB issued ASU No. 2020-05 and delayed the effective date of this ASU, extending the effective date for non-public business entities, and making the ASU effective for the Company for the fiscal year ending December 31, 2022, and interim periods within the fiscal year ending December 31, 2023, with early adoption permitted. The Company has not yet selected a transition method and, while we are still in the process of assessing the impact of this new standard on our consolidated financial position, results of operations and cash flows, we expect the adoption of this standard will have a material impact on our consolidated financial position due to the recognition of the right-of-use asset and lease liability related to operating leases. We had operating leases with remaining rental payments of approximately $21,710 as of September 30, 2022. The discounted minimum remaining rental payments will be the starting point for determining the right-of-use asset and lease liability. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments , which introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. The new model will apply to: (1) loans, accounts receivable, trade receivables, and other financial assets measured at amortized cost, (2) loan commitments and certain other off-balance sheet credit exposures, (3) debt securities and other financial assets measured at fair value through other comprehensive income, and (4) beneficial interests in securitized financial assets. The amendments contained in this ASU will be applied through a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. In November 2018, the FASB issued ASU No. 2018-19, which amended the effective date of ASU No. 2016-13 and clarified that receivables arising from operating leases are not within the scope of Subtopic 326-20. In October 2019, the FASB delayed the effective date of this ASU, extending the effective date for non-public business entities and making the ASU effective for the Company for the fiscal year ending December 31, 2023, and interim periods therein, with early adoption permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting . The ASU provides optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference the London Inter-bank Offered Rate (“LIBOR”) or another rate that is expected to be discontinued. In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848). This ASU provides supplemental guidance and clarification to ASU No. 2020-04, and these updates must be adopted concurrently, cumulatively referred to as “Topic 848.” The amendments in Topic 848 are currently effective for all entities, and upon adoption, may be applied prospectively to contract modifications made on or before December 31, 2022. The Company is still assessing the impact of Topic 848 on its consolidated financial statements. In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815 – 40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity . This ASU simplifies the guidance on accounting for convertible debt instruments by removing the separation models for convertible debt with a cash conversion feature and convertible debt with a beneficial conversion feature. As a result, after adopting the ASU’s guidance, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, and for convertible preferred stock wholly as preferred stock unless certain other conditions are met. Also, the ASU requires the application of the if-converted method for calculating diluted earnings per share and the treasury stock method will no longer be available. This ASU will be effective for the Company for the fiscal year ending December 31, 2024, and interim periods therein, with early adoption permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements.

Asset Acquisitions

Asset Acquisitions	9 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Asset Acquisitions	Asset Acquisitions The Company closed on two acquisitions during the nine months ended September 30, 2022 and one acquisition during the nine months ended September 30, 2021 as part of its ERT service offerings. As each asset group lacked the necessary elements of a business, these transactions were accounted for as asset acquisitions in accordance with ASC 805, Business Combinations, with the assumed liabilities, plus expenses and cash paid by or owed to the seller, comprising the purchase price. Since the fair value of the net assets acquired was different than the purchase price of the assets, the Company allocated the difference pro rata on the basis of relative fair values to reduce the basis of land, land improvements and structural fill sites, property and equipment and other assets acquired. For one acquisition, the Company recognized a deferred gain representing the difference between the fair value of the assets acquired and the consideration given (including transaction costs incurred). The Company has identified asset retirement obligations within the assumed liabilities to be initially measured and valued in accordance with ASC 410, Asset Retirement and Environmental Obligations . We developed our estimates of these obligations using input from our operations personnel. Our estimates are based on our interpretation of current requirements and proposed regulatory changes and are intended to approximate fair value. Absent quoted market prices, the estimate of fair value is based on the best available information, including the results of present value techniques. We use professional engineering judgment and estimated prices based on quotes rates from third parties and amounts paid for similar work to determine the fair value of these obligations. We are required to recognize these obligations at market prices whether we plan to contract with third parties or perform the work ourselves. Once we determined the estimated closure and post-closure costs for each asset retirement obligation, we inflation-adjusted those costs to the expected time of payment using an estimated inflation rate and discounted those expected future costs back to present value using the credit-adjusted, risk-free rate effective at the time the obligation was incurred, consistent with the expected cash flow approach. Any changes in expectations that result in an upward revision to the estimated cash flows are treated as a new liability and discounted at the current rate, while downward revisions are discounted at the historical weighted average rate of the recorded obligation. The credit-adjusted, risk-free discount rate used to calculate the present value of an obligation is specific to each specific asset retirement obligation. Gains on ARO settlements result from the requirement to record costs plus an estimate of third-party profit in determining the ARO. When we perform the work using internal resources and reduce the ARO for work performed, we recognize a gain if actual costs are less than the estimated costs plus the third-party profit. Because these obligations are measured at estimated fair value using present value techniques, changes in the estimated cost or timing of future closure, demolition, and post-closure activities could result in a material change in these liabilities, related assets, and results of operations. We assess the appropriateness of the estimates used to develop our recorded balances annually or more often if conditions warrant. Changes in timing or extent of future final closure and post-closure activities typically result in a current adjustment to the recorded liability and land, land improvements and structural fill sites asset. Avon Lake Asset Acquisition On April 4, 2022, the Company, through its wholly-owned special purpose vehicle subsidiary Avon Lake Environmental Redevelopment Group, LLC (“ALERG”), completed the full acquisition of the Avon Lake Generating Station and adjacent property (the "Avon Lake Property") from GenOn Power Midwest, LP, (“GenOn”) and has begun environmental remediation and sustainable redevelopment of the property. As part of this agreement, the Company acquired the Avon Lake Property, which is a 40-acre area located on Lake Erie that consists of multiple parcels of land adjacent to the retired generating plant, including the generating station, which ceased electric generation in March 2022, submerged lands lease in Lake Erie, substation/switch gear and transformers, administrative offices and structures, coal rail and storage yard parcels. ALERG assumed all liabilities related to the Avon Lake Property and will be responsible for the shutdown and decommissioning of the coal power plant and performing all environmental remediation and redevelopment work at the site. The decommissioning of the coal power plant and redevelopment of the property are expected to be completed within 36 months from the date of acquisition. The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (34,300) Direct transaction costs (1,345) Total consideration and transaction costs incurred $ (35,645) Assets Acquired: Restricted Cash $ 2,900 Land, land improvements and structural fill sites 32,109 Plant, machinery and equipment 623 Vehicles 13 Total allocated value of assets acquired $ 35,645 A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 2.50 % Weighted average rate applicable to our long-term asset retirement obligations 7.35 % As part of the acquisition, the Company acquired certain plant, machinery and equipment and vehicles for which management committed to a plan to sell. Property and equipment of $505 that was initially classified as held for sale were sold to third parties as of September 30, 2022. The Company received proceeds of $1,565 and recorded a gain of $1,060 within gains on sales of real estate, property and equipment, net, in the Company's condensed consolidated statements of operations. The proceeds were recorded in cash flows from investing activities in the Company's condensed consolidated statements of cash flows. The amount of land, land improvements and structural fill sites acquired includes fair value estimates for real estate and scrap to be sold from the demolition of the coal power plant. Restricted cash is exclusively used to fund initial costs related to the acquisition and the remaining balance will be used to fund a portion of the asset retirement obligations. Restricted cash is held and will be disbursed by an escrow agent. Funds will be released to the Company as asset retirement obligation costs are incurred and performance of remediation activities are certified by an authorized representative of GenOn. Cheswick Generating Station Asset Acquisition On April 6, 2022, the Company, through its wholly-owned special purpose vehicle subsidiaries, Cheswick Plant Environmental Redevelopment Group, LLC, Cheswick Lefever, LLC and Harwick Operating Company, LLC (collectively, “CPERG”), completed the full acquisition of the Cheswick Generating Station, the Lefever Ash Landfill and the Monarch Wastewater Treatment Facility (the "Cheswick Property") from GenOn and will begin environmental remediation and sustainable redevelopment of the Pennsylvania properties immediately. The Cheswick Generating Station ceased electrical generation operations on March 31, 2022. As part of this agreement, the Company, through CPERG, has acquired properties consisting of: ▪ The retired Cheswick Generating Station, a 565 MW coal-fired plant previously operated by GenOn, located in Springdale, PA. The 56-acre primary generating station site, along with an adjacent 27-acre parcel, consists of an operating rail line, a coal yard, bottom ash emergency and recycle ponds, waste ponds and a coal pile runoff pond, coal delivery equipment, and an ash handling parcel. CPERG will be responsible for the shutdown and decommissioning of the coal power plant, the remediation of the two ash ponds and performing all environmental remediation and redevelopment work at the site. ▪ The Lefever Ash Landfill in Cheswick, PA. The 182-acre site, including the 50-acre landfill facility, provided disposal of coal combustion residuals (CCR) and residual waste from the Cheswick Generating Station. CPERG will be responsible for the closure design, remediation closure work and post-closure monitoring of the landfill. ▪ The Monarch Wastewater Treatment Facility in Allegheny County, PA. CPERG will be responsible for management and compliance with all applicable environmental regulations. In the process of accounting for this transaction, the basis of the land, property and equipment acquired was reduced to zero, resulting in an excess of financial assets over and above the purchase price. The Company recorded a deferred gain of $4,476, representing the difference between the fair value of the assets acquired and the consideration given (including transaction costs incurred). This deferred gain will be recognized ratably over the entire project as remediation costs are incurred in proportion to total estimated remediation costs. During the three and nine months ended September 30, 2022, the Company recognized $167 of the deferred gain within gains on sales of real estate, property and equipment, net, in the Company's condensed consolidated statements of operations. The decommissioning of the coal power plant and redevelopment of these properties are expected to be completed within 42 months from the date of acquisition, and the post-closure monitoring associated with the Lefever Ash Landfill and Monarch Wastewater Treatment Facility will occur for 30 years after the closure of the sites. The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (30,179) Direct transaction costs and accrued expenses (684) Total consideration and transaction costs incurred $ (30,863) Assets Acquired: Cash $ 5,577 Restricted cash 29,762 Total allocated value of assets acquired $ 35,339 Excess of fair value of assets acquired over total consideration – deferred gain $ (4,476) A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 2.50 % Weighted average rate applicable to our long-term asset retirement obligations 7.45 % As part of the acquisition, the Company acquired certain plant, machinery and equipment and vehicles for which management committed to a plan to sell. The Company received proceeds and recorded a gain of $387 within gains on sales of real estate, property and equipment, net, in the Company's condensed consolidated statements of operations. The proceeds were recorded in cash flows from investing activities in the Company's condensed consolidated statements of cash flows. Restricted cash is exclusively used to fund initial costs related to the acquisition and the remaining balance will be used to fund a portion of the asset retirement obligations. Restricted cash is held and will be disbursed by an escrow agent. Funds will be released to the Company as certain project milestones are met and performance of remediation activities are certified by an authorized representative of GenOn. Gibbons Creek Asset Acquisition In February 2021, the Company, through its GCERG subsidiary, closed on an Asset Purchase Agreement (the “APA” or the “Agreement”) with Texas Municipal Power Agency to acquire, remediate and redevelop the Gibbons Creek Steam Electric Station and Reservoir (the “Gibbons Creek Transaction”). As part of this Agreement, GCERG took ownership of the 6,166 acre area (collectively, the “Purchased Assets”), which includes the closed power station and adjacent property, the 3,500 acre reservoir, dam and floodway. GCERG assumed all environmental responsibilities and became responsible for decommissioning the coal power plant and performing all environmental remediation work for the site landfills and ash ponds. At closing of the APA, GCERG became liable for and expressly fully assumed any and all environmental liabilities and environmental compliance, as well as, without limitation, any remediation, investigation, management, mitigation, closure, maintenance, reporting, removal, disposal of and any other actions with respect to any hazardous substances at, on, in, under, or emanating from the Purchased Assets. GCERG, at its discretion, is redeveloping the property in an environmentally conscious manner which the Company expects to expand economic activity and benefit the surrounding communities as well as restore the property to a state that will enable it to be put to its best potential use. The existing power plant has been demolished, and GCERG is working with the Texas Commission on Environmental Quality to complete all environmental remediation required for the property and then plans to redevelop the remediated property within all zoning restrictions. The redevelopment of the property is expected to be completed within 34 months from the date of acquisition. The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (50,590) Bond and insurance accrued expenses, net (2,229) Direct transaction costs (2,336) Total consideration and transaction costs incurred $ (55,155) Assets Acquired: Cash $ 6,354 Restricted cash 28,546 Water rights 5,196 Land, land improvements and structural fill sites 14,385 Plant, machinery and equipment 610 Vehicles 64 Total allocated value of assets acquired $ 55,155 A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 3.00 % Weighted average rate applicable to our long-term asset retirement obligations 4.50 % Demolition costs will be capitalized as part of land, land improvements and structural fill sites as incurred as part of preparing the site for sale since, at the acquisition date, (i) we planned to demolish the existing structure as part of the redevelopment plan for the acquired property, (ii) demolition is expected to occur within a reasonable period of time after acquisition, and (iii) such expected costs will be incurred to make the land saleable to a third party. As part of the acquisition, the Company acquired certain plant, machinery and equipment and vehicles for which management committed to a plan to sell. Property and equipment of $193 that was initially classified as held for sale was subsequently sold to third parties. To date, the Company has completed the sale of nearly 80% of the real property acreage acquired through the Gibbons Creek Transaction. The sale of property included 4,860 acres of the 6,166-acre area, the 3,500-acre reservoir, dam and spillway. There were no sales of real property acreage for the three and nine months ended September 30, 2022 and 2021, respectively.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue	Revenue We disaggregate our revenue from customers by customer arrangement as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. See details in the table below. Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Construction contracts $ 40,402 $ 48,176 $ 107,338 $ 99,828 Byproduct services 30,106 26,643 81,529 76,508 Raw material sales 11,032 9,342 35,834 23,450 Total revenue $ 81,540 $ 84,161 $ 224,701 $ 199,786 As of September 30, 2022, the Company had remaining performance obligations with an aggregate transaction price of $530,373 on construction contracts for which we recognize revenue over time. We expect to recognize approximately 10% of our remaining performance obligations as revenue during the remainder of 2022, 13% in 2023, 15% in 2024, and 62% thereafter. Revenue associated with our remaining performance obligations includes performance obligations related to our construction contracts. The balance of remaining performance obligations does not include variable consideration that was determined to be constrained as of September 30, 2022. As of September 30, 2022, there were $354 of unapproved change orders associated with project scope changes included in determining the profit or loss on certain construction contracts, of which $0 were approved subsequent to quarter-end. The Company did not have any foreign revenue for the three and nine months ended September 30, 2022 and 2021. The timing of revenue recognition, billings and cash collections results in accounts receivable, contract assets, and contract liabilities on the accompanying unaudited condensed consolidated balance sheets. Our contract assets are as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Retainage 9,438 9,681 Total contract assets $ 26,993 $ 26,844 Our contract liabilities are as follows: September 30, 2022 December 31, 2021 Billings in excess of costs and estimated earnings $ 4,053 $ 5,716 Deferred revenue 1,585 483 Total contract liabilities $ 5,638 $ 6,199 We recognized revenue of $57 and $5,886 for the three and nine months ended September 30, 2022 that was previously included in contract liabilities at December 31, 2021. The Company's net position on uncompleted contracts is as follows: September 30, 2022 December 31, 2021 Costs incurred on uncompleted contracts $ 245,077 $ 227,195 Estimated earnings 15,360 22,331 Total costs and estimated earnings 260,437 249,526 Less billings to date (246,935) (238,079) Net balance in process $ 13,502 $ 11,447 The net balance in process classified on the accompanying unaudited condensed consolidated balance sheets is as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Billings in excess of costs and estimated earnings (4,053) (5,716) Net balance in process $ 13,502 $ 11,447

Balance Sheet Items

Balance Sheet Items	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Items	Balance Sheet Items Real estate, property and equipment, net The following table shows the components of real estate, property and equipment, net: September 30, 2022 December 31, 2021 Plant, machinery and equipment $ 65,370 $ 63,937 Structural fill site improvements 55,760 55,760 Vehicles 11,850 11,718 Office equipment 600 600 Buildings and leasehold improvements 267 267 Land, land improvements and structural fill sites 43,838 12,231 Capital lease assets 46,310 31,172 Construction in progress 616 1,522 Total real estate, property and equipment $ 224,611 $ 177,207 Less: accumulated depreciation (118,532) (106,734) Real estate, property and equipment, net $ 106,079 $ 70,473 Land, land improvements and structural fill sites include $5,870 of real property acquired in the Gibbons Creek Transaction that the Company is actively demolishing and for which depreciation expense is not being recorded. During the three and nine months ended September 30, 2022, the Company capitalized $192 and $1,802, respectively, of demolition costs and sold scrap with a cost basis of $348 and $2,304, respectively. During the three and nine months ended September 30, 2021, the Company capitalized $1,365 and $2,395, respectively, of demolition costs and sold scrap with a cost basis of $1,003 and $1,342, respectively. Depreciation expense was $5,034 and $4,289 for the three months ended September 30, 2022 and 2021, respectively, and $14,477 and $12,657 for the nine months ended September 30, 2022 and 2021, respectively. Capital leases The following table shows the components of capital lease assets, net: September 30, 2022 December 31, 2021 Capital lease assets $ 46,310 $ 31,172 Less: accumulated depreciation (10,305) (3,606) Capital lease assets, net $ 36,005 $ 27,566 The Company's depreciation of capital lease assets is included within depreciation expense as disclosed above. Sales-type lease In March 2021, the Company amended an existing ground lease with a third party concerning one of the Company's structural fill assets with a 30-year term expiring on December 31, 2050. The lease includes multiple options that may be exercised at any time during the lease term for the lessee to purchase all or a portion of the premises as well as a put option (the “Put Option”) that provides the Company the option to require the lessee to purchase all of the premises at the end of the lease term. In accordance with ASC 840, Leases , the Company considered whether this lease, as amended, met any of the following four criteria as part of classifying the lease at the amendment date: (a) the lease transfers ownership of the property to the lessee by the end of the lease term; (b) the lease contains a bargain purchase option; (c) the lease term is equal to 75 percent or more of the estimated economic life of the lease property; and (d) the present value of the minimum lease payments, excluding executory costs, equals or exceeds 90 percent of the excess of the fair value of the lease property to the lessor at lease inception. This lease was recorded as a sales-type capital lease due to the Put Option provision contained within the lease agreement that represents a transfer of ownership of the property by the end of the lease term. Additionally, the Company determined that collectability of the lease payments was reasonably assured and that there were not any significant uncertainties related to costs that it has yet to incur with respect to the lease. At the amendment date of the lease, a discount rate of 3.9% implicit in the sales-type lease was used to calculate the present value of the minimum lease payments, which the Company recorded as a lease receivable. The Company recognized a gain of $5,568 within operating income in the accompanying unaudited condensed consolidated statements of operations for the nine months ended September 30, 2021. The following table reflects the classification of the lease receivable within our accompanying unaudited condensed consolidated balance sheet: September 30, 2022 December 31, 2021 Lease receivable $ 5,875 $ 5,937 Less: current portion in prepaid expenses and other current assets (67) (65) Non-current portion in other assets $ 5,808 $ 5,872 Asset Sale Agreement In June 2021, the Company consummated an asset sale with an unrelated third party in which the Company assigned a lease agreement to the purchaser and sold certain grinding-related inventory and fixed assets for an aggregate sale price of $2,852. The Company received $1,250 in cash at closing, with the remaining portion to be paid over time on specified dates, with the final payment to be received 36 months from the closing date. The Company determined that the note receivable included a significant financing component. As a result, the sale price and gain on sale were determined on a discounted cash flow basis. The following table reflects the classification of the note receivable within our unaudited condensed consolidated balance sheet: September 30, 2022 December 31, 2021 Note receivable $ 1,102 $ 1,352 Less: current portion in prepaid expenses and other current assets (500) (500) Non-current portion in other assets $ 602 $ 852 Accrued liabilities The following table shows the components of accrued liabilities: September 30, 2022 December 31, 2021 Accrued expenses $ 19,815 $ 25,074 Accrued interest 2,362 2,008 Accrued preferred stock dividends 957 1,994 Accrued payroll and bonuses 2,220 7,798 Accrued liabilities $ 25,354 $ 36,874

Asset Retirement Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations As of September 30, 2022, the Company owns two structural fill sites with continuing maintenance and monitoring requirements after their closure, one wastewater treatment facility with continuing maintenance and monitoring requirements, and eight tracts of real property with decommissioning, remediation and monitoring requirements. As of September 30, 2022 and December 31, 2021, the Company has accrued $76,772 and $42,413, respectively, for the asset retirement obligations ( “ ARO ” ). The following table reflects the activity for our asset retirement obligations: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Balance, beginning of period $ 83,729 $ 52,361 $ 42,413 $ 5,159 Liabilities acquired — — 64,479 50,590 Liabilities settled (8,408) (1,805) (28,291) (5,980) Accretion 2,429 538 3,157 1,325 Gain on ARO settlement (978) (1,127) (4,986) (1,127) Balance, end of period 76,772 49,967 76,772 49,967 Less: current portion (44,030) (32,181) (44,030) (32,181) Non-current portion $ 32,742 $ 17,786 $ 32,742 $ 17,786

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions ATC Group Services LLC (“ATC”), an entity owned by BCP, our majority stockholder, provided environmental consulting and engineering services at certain service sites. Expenses to ATC were $1 and $4 for the three months ended September 30, 2022 and 2021, respectively, and $26 and $83 for the nine months ended September 30, 2022 and 2021. The Company had no receivables outstanding from ATC at September 30, 2022 and December 31, 2021. The Company had payables and accrued expenses, net of credit memos, due to ATC of $0 and $4 at September 30, 2022 and December 31, 2021, respectively. As further discussed in Note 9, Long-term Debt, in August 2021, the Company completed an offering of $135,000, in the aggregate, of the Company’s 8.50% Senior Notes due 2026 (the “Notes”), which amount included the exercise by the underwriters of their option to purchase an additional $5,000 aggregate principal amount of Notes. B. Riley Securities, Inc. (“B. Riley”), a shareholder of the Company with board representation, served as the lead book-running manager and underwriter for this offering, purchasing a principal amount of $80,325 of the Notes. Fees paid to B. Riley related to this offering were $7,914. These fees were capitalized as debt issuance costs within notes payable, less current maturities in the accompanying unaudited condensed consolidated balance sheets and will be amortized prospectively through interest expense, net in the accompanying unaudited condensed consolidated statements of operations using the effective interest method through the maturity date of the Notes. As further discussed in Note 9, Long-term Debt, on August 15, 2022, the Company, through its GCERG subsidiary, entered into the Term Loan Agreement with BCP that provides for a delayed-draw term loan in an aggregate principal amount of $20,000. As further discussed in Note 11, Mezzanine Equity, in March 2020, the Company entered into an agreement with an investment fund affiliated with BCP to sell 26 shares of Preferred Stock. As discussed in Note 17, Subsequent Events, on November 14, the Company entered into an investment agreement with BCP to sell 30 (thirty-thousand) shares of Series B Preferred Stock for gross proceeds of $30,000 and resulted in net proceeds to the Company of $28,800.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill and indefinite-lived intangible assets are not amortized but instead are tested for impairment annually or more often if events or changes in circumstances indicate that the fair value of the asset may have decreased below its carrying value. We perform our impairment test effective October 1st of each year and evaluate for impairment indicators between annual impairment tests, of which there were none. There was no goodwill activity during the nine months ended September 30, 2022. Indefinite-Lived and Definite-Lived Intangible Assets Our intangible assets, net include a trade name that is considered to have an indefinite life and customer relationships that are considered to have a definite life. Our customer relationships are amortized on a straight-line basis over their estimated useful lives of 10 years. The amortization expense of our definite-lived intangible assets was $1,974 for the three months ended September 30, 2022 and 2021 and $5,921 for the nine months ended September 30, 2022 and 2021. In performing the evaluation for potential impairment indicators with respect to the Company's long-lived assets, including the trade name indefinite-lived intangible as of September 30, 2022, we considered the impact of the Company's recent operating results on forecasts of future cash flows attributable to such trade name. While the financial results in our near-term and terminal forecast periods remain relatively consistent with prior forecasts, we continue to analyze the rapidly changing regulatory and political environment and the potential impacts to our trade name from our existing revenue-generating activities and an expansion of our ERT offerings. We continue to assess strategic initiatives to maximize the potential in our existing backlog and pipeline of opportunities. Changes resulting from the Company's strategic decisions and initiatives, the current economic environment and other external factors, including inflationary market pressures and supply chain disruption, could result in significant adverse changes to the Company’s assumptions related to the estimated fair value of the intangible asset that could lead to reduction in the fair value of our trade name. Any future impairment charges on our trade name indefinite-lived intangible asset could have a material adverse impact on the Company’s consolidated financial condition and results of operations. The Company’s intangible assets consist of the following: September 30, 2022 December 31, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Definite-lived intangibles Customer relationships $ 78,942 $ (44,648) $ 34,294 $ 78,942 $ (38,727) $ 40,215 Indefinite-lived intangibles Charah trade name 13,316 13,316 Total $ 47,610 $ 53,531

Long-term Debt

Long-term Debt	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt Senior Notes On August 25, 2021, the Company completed a public offering of $135,000, in the aggregate, of the Company’s Notes, which amount includes the exercise by the underwriters of their option to purchase an additional $5,000 aggregate principal amount of Notes. The Notes were issued pursuant to the First Supplemental Indenture (the “First Supplemental Indenture”), dated as of August 25, 2021, between the Company and Wilmington Savings Fund Society, FSB, as trustee (the “Trustee”). The First Supplemental Indenture supplements the Indenture entered into by and between the Company and the Trustee, dated as of August 25, 2021 (the “Base Indenture” and, together with the First Supplemental Indenture, the “Indenture”). The public offering price of the Notes was 100.0% of the principal amount. The Company received proceeds before payment of expenses and other fees of $135,000. The Company used the proceeds, along with cash from the sale of equity to B. Riley, to fully repay and terminate the Company’s Credit Facility, as defined below, with any remaining proceeds to be used for general corporate purposes, including funding future acquisitions and investments, repaying indebtedness, making capital expenditures and funding working capital. The Notes bear interest at the rate of 8.50% per annum. Interest on the Notes is payable quarterly in arrears on January 31, April 30, July 31 and October 31 of each year, commencing October 31, 2021. The Notes will mature on August 31, 2026. The Company may redeem the Notes for cash in whole or in part at any time (i) on or after August 31, 2023 and prior to August 31, 2024, at a price equal to 103% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption, (ii) on or after August 31, 2024 and prior to August 31, 2025, at a price equal to 102% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption, and (iii) on or after August 31, 2025 and prior to maturity, at a price equal to 100% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption. On and after any redemption date, interest will cease to accrue on the redeemed Notes. If the Company is redeeming less than all of the Notes, the Trustee will select the Notes to be redeemed by such method as the Trustee deems fair and appropriate in accordance with methods generally used at the time of selection by fiduciaries in similar circumstances. The Indenture also contains customary event of default and cure provisions. If an uncured default occurs and is continuing, the Trustee or the holders of not less than 25% in aggregate principal amount of the Notes may declare the Notes to be immediately due and payable. The Notes are senior unsecured obligations of the Company and rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness. As a result of the issuance of the Notes, $12,116 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the accompanying unaudited condensed consolidated statements of operations using the effective interest method through the maturity date of the Notes. Asset-Based Lending Credit Agreement On November 9, 2021, the Company entered into a new Credit Agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A. (“JPMorgan”), as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Credit Agreement provides for a four-year senior secured revolving credit facility with initial aggregate commitments from the lenders of $30,000, which includes $5,000 available for swingline loans, plus an additional $5,000 of capacity available for the issuance of letters of credit if supported by cash collateral provided by the Company (with a right to increase such amount by up to an additional $5,000) (“Aggregate Revolving Commitments”). Availability under the Credit Agreement is subject to a borrowing base calculated based on the value of certain eligible accounts receivable, inventory, and equipment of the Company and subject to redeterminations made in good faith and in the exercise of permitted discretion of JPMorgan. Proceeds of the Credit Agreements may be used for working capital and general corporate purposes. The Credit Agreement provides for borrowings of either base rate loans or Eurodollar loans. Principal amounts borrowed are payable on the maturity date with such borrowings bearing interest that is payable (i) with respect to base rate loans, monthly and (ii) with respect to Eurodollar loans, the last day of each Interest Period (as defined below); provided that if any Interest Period for a Eurodollar loan exceeds three months, interest will be payable on the respective dates that fall every three months after the beginning of such Interest Period. Eurodollar Loans bear interest at a rate per annum equal to the Adjusted LIBOR for one, three or six months (the “Interest Period”), plus an applicable margin of 2.25%. Base rate loans bear interest at a rate per annum equal to the greatest of (i) the agent bank’s reference rate, (ii) the federal funds effective rate plus 50 basis points and (iii) the rate for one month Adjusted LIBOR loans plus 100 basis points, plus an applicable rate of 125 basis points. The Credit Agreement contains a provision for sustainability adjustments annually that will impact the applicable margin by between positive 0.05% and negative 0.05% based on the achievement, or lack thereof, of certain metrics agreed upon between JPMorgan and the Company and publicly reported through the Company’s annual non-financial sustainability report. The Credit Agreement is guaranteed by certain of the Company’s subsidiaries and is secured by substantially all of the Company’s and such subsidiaries’ assets. The Credit Agreement contains customary restrictive covenants for asset-based loans that may limit the Company’s ability to, among other things: incur additional indebtedness, sell assets, make loans to others, make investments, enter into mergers, make certain restricted payments, incur liens, and engage in certain other transactions without the prior consent of the lenders. A covenant testing period (“Covenant Testing Period”) is a period in which excess availability (which is defined in the Credit Agreement as the sum of availability and an amount up to $1,000) is less than the greater of (a) 12.5% of the lesser of the aggregate revolving commitments and the borrowing base, (b) the lesser of $7,500 and the PP&E Component as defined in the Credit Agreement, and (c) $3,500, for three consecutive business days. During a Covenant Testing Period, the Credit Agreement requires the Company to maintain a fixed charge coverage ratio as defined in the Credit Agreement, determined for any period of twelve (12) consecutive months ending on the last day of each fiscal quarter, of at least 1.00 to 1.00. As of September 30, 2022, the Company has $8,800 drawn on the Credit Agreement. Outstanding letters of credit were $10,687 and $19,027 as of September 30, 2022 and December 31, 2021. As of September 30, 2022, all outstanding letters of credit were issued with JPMorgan. On August 15, 2022, the Company entered into Amendment No. 1 to the Credit Agreement (the “Credit Agreement Amendment”) with JPMorgan Chase Bank, N.A., as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Credit Agreement Amendment, among other things, permitted the Company (and certain of its subsidiaries) to execute the Term Loan Agreement and guarantee the Term Loan Agreement borrower’s obligations under the Term Loan Agreement. Additionally, the Credit Agreement Amendment permits the Company to include certain gains on ARO settlements and cash received for deferred gains from ERT projects in the calculation of the Company’s fixed charge coverage ratio under the Credit Agreement's financial covenant. On November 14, 2022, the Company entered into Amendment No. 2 to the Credit Agreement (the “ Second Credit Agreement Amendment”) with JPMorgan Chase Bank, N.A., as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Second Credit Agreement Amendment, among other things, changed the benchmark rate floor on such loans from the LIBO Rate to the Adjusted Term SOFR Rate, increased the revolver Term Benchmark spread from 2.25% to 2.75%, and modified the test for the Covenant Testing Period such that any excess borrowing base over the revolving commitment amount could reduce the threshold that triggers the covenant test up to $2,000. Additionally, the Second Credit Agreement Amendment permits the Company to include $15,000 of equity contributions in "EBITDA", as defined in the Second Credit Agreement Amendment, for the fourth quarter of 2022. As of November 14, 2022, based on the undrawn letters of credit utilization of $10,687, borrowings of $8,800 under the Credit Agreement and applicable financial covenant requirements, springing covenants would become applicable if the Company were to borrow an additional $3,898 under the Credit Agreement. As of September 30, 2022, after taking into account the terms of the Credit Agreement Amendment, the Company would not have met the financial covenant had there been a Covenant Testing Period and the financial covenant had been in effect. As a result of entering into the Credit Agreement, $1,443 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the unaudited condensed consolidated Statements of Operations using the straight-line method through the maturity date of the Credit Agreement. Unamortized debt issuance costs as of September 30, 2022 and December 31, 2021 were $1,142 and $1,338, respectively, and classified in other assets in the accompanying unaudited condensed consolidated balance sheets. Term Loan Agreement On August 15, 2022, the Company, through its GCERG subsidiary (the “Term Loan Borrower”), entered into a term loan agreement (the “Term Loan Agreement”) with Charah Preferred Stock Aggregator, LP, an affiliate of Bernhard Capital Partners Management, LP (“BCP”). As a result of unexpected operating losses, an increase in contract assets and accelerated cash outflows for remediation activities on an ERT project that led to a decrease in cash during the six months ended June 30, 2022, the Company sought additional financing options to fund ongoing operations and project level investment. The Term Loan Agreement was executed to provide additional liquidity for the Company and accelerate the timing of the Company's cash flows for anticipated sales of the GCERG real estate parcels. The Term Loan Agreement provides for a delayed-draw term loan in an aggregate principal amount of $20,000. Borrowings can be requested at any date before October 24, 2022. The Term Loan Agreement is scheduled to mature on the earlier of the sale of the remaining GCERG real estate parcels or April 15, 2024. Borrowings under the Term Loan Agreement accrue interest at a percentage per annum equal to 12.0%, with interest payments due on the first business day of each calendar quarter following the effective date of the Term Loan Agreement and on the maturity date. The Term Loan Borrower agreed to pay a commitment fee equal to $1,000 that is payable on the earliest of (i) April 15, 2024, (ii) the date on which the loans are redeemed in full and all commitments are terminated and (iii) the date on which all commitments are terminated in full. The Term Loan Agreement is secured by a lien on, and security interest in, substantially all of the Term Loan Borrower’s assets, including real property, and is guaranteed on an unsecured basis by the Company and Charah, LLC. Voluntary prepayments are permitted at any time, without premium or penalty. The Term Loan Agreement contains certain customary representations and warranties and affirmative and negative covenants. The negative covenants include, subject to customary exceptions, limitations on indebtedness, investments and acquisitions, mergers and consolidations, restricted payments, transactions with affiliates, liens and dispositions. The Term Loan Agreement allows the Term Loan Borrower to make distributions to its equity holders with the proceeds of the loans made thereunder. The Term Loan Agreement contains customary events of default. If an event of default occurs and is continuing, the lenders may declare all loans to be immediately due and payable. As of September 30, 2022, the Term Loan Borrower had borrowings of $16,000 under the Term Loan Agreement. On November 8, 2022, the Company elected to draw down the remaining $4,000 available under the Term Loan Agreement to fund operating activities. As a result of entering into the Term Loan Agreement, $487 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the unaudited condensed consolidated statements of operations using the effective interest method through the maturity date of the Term Loan Agreement. Previous Credit Facility On September 21, 2018, we entered into a credit agreement (the “Credit Facility”) by and among us, the lenders party thereto from time to time and Bank of America, N.A., as administrative agent (the “Administrative Agent”). The Credit Facility included: • A revolving loan not to exceed $50,000 (the “Revolving Loan”); • A term loan of $205,000 (the “Closing Date Term Loan”); and • A commitment to loan up to a further $25,000 in term loans, which expired in March 2020 (the “Delayed Draw Commitment” and the term loans funded under such Delayed Draw Commitment, the “Delayed Draw Term Loan,” together with the Closing Date Term Loan, the “Term Loan”). Pursuant to the terms of the Credit Facility and its related amendments, all amounts associated with the Revolving Loan and the Term Loan under the Credit Facility were set to mature in July 2022. The interest rates per annum applicable to the loans under the Credit Facility were based on a fluctuating rate of interest measured by reference to, at our election, either (i) the Eurodollar rate, currently LIBOR, or (ii) an alternative base rate. Various margins were added to the interest rate based upon our consolidated net leverage ratio (as defined in the Credit Facility). Customary fees were payable regarding the Credit Facility and included (i) commitment fees for the unused portions of the Credit Facility and (ii) fees on outstanding letters of credit. Amounts borrowed under the Credit Facility were secured by substantially all of the assets of the Company. The Credit Facility contained various customary representations, warranties, restrictive covenants, certain affirmative covenants, including reporting requirements, and customary events of default. The following table summarizes the major components of debt at each balance sheet date and provides maturities and interest rate ranges for each major category as of September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Various equipment notes entered into in November 2017, payable in monthly installments ranging from $6 to $24, including interest at 5.2%, maturing in December 2022 through December 2023. The notes are secured by equipment with a net book value of $96 as of September 30, 2022. $ 847 $ 1,748 Various equipment notes entered into in 2018, payable in monthly installments ranging from $1 to $39, including interest ranging from 5.6% to 6.8%, maturing in March 2023 through May 2025. The notes are secured by equipment with a net book value of $3,948 as of September 30, 2022. 4,364 5,952 Various equipment notes entered into in 2019, payable in monthly installments ranging from $2 to $23, including interest ranging from 3.9% to 6.4%, maturing in April 2024 through December 2024. The notes are secured by equipment with a net book value of $1,603 as of September 30, 2022. 1,973 2,633 Various equipment notes entered into in 2020, payable in monthly installments ranging from $9 to $10, including interest of 5.4%, maturing in August 2025. The notes are secured by equipment with a net book value of $1,410 as of September 30, 2022. 1,320 1,624 Various equipment notes entered into in 2021, payable in monthly installments ranging from $3 to $9, including interest ranging from 4.0% to 6.5%, maturing in February 2026 through August 2026. The notes are secured by equipment with a net book value of $1,749 as of September 30, 2022. 1,580 1,861 An equipment note entered into in 2022 with a customer, payable in monthly installments of $68 with no interest component, maturing with a balloon payment of the remaining outstanding balance in April 2023. The note is secured by equipment with a net book value of $3,991 as of September 30, 2022. 3,991 — Various commercial insurance premium financing agreements entered into in 2021, payable in monthly installments ranging from $24 to $117, including interest ranging from 3.0% to 3.9%, maturing in October 2021 through April 2022. — 467 Various commercial insurance premium financing agreements entered into in 2022, payable in monthly installments ranging from $19 to $143, including interest ranging from 4.2% to 5.3%, maturing in November 2022 through June 2023. 1,300 — A $10,000 equipment line with a bank, entered into in December 2017, secured by all equipment purchased with the proceeds of the loan. Interest is calculated on any outstanding amounts using a fixed rate of 4.5%. The equipment line converted to a term loan in September 2018 with a maturity date of June 22, 2023. The term loan is secured by equipment with a net book value of $1,012 as of September 30, 2022. 1,541 3,387 Senior Unsecured Notes, issued August 2021 (see Note 9). The Notes are senior unsecured obligations of the Company, bearing stated interest at 8.5%, and rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness. 135,000 135,000 Total 151,916 152,672 Less debt issuance costs, net (10,473) (11,444) 141,443 141,228 Less current maturities (12,108) (7,567) Notes payable due after one year $ 129,335 $ 133,661

Notes Payable

Notes Payable	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Notes Payable	Long-term Debt Senior Notes On August 25, 2021, the Company completed a public offering of $135,000, in the aggregate, of the Company’s Notes, which amount includes the exercise by the underwriters of their option to purchase an additional $5,000 aggregate principal amount of Notes. The Notes were issued pursuant to the First Supplemental Indenture (the “First Supplemental Indenture”), dated as of August 25, 2021, between the Company and Wilmington Savings Fund Society, FSB, as trustee (the “Trustee”). The First Supplemental Indenture supplements the Indenture entered into by and between the Company and the Trustee, dated as of August 25, 2021 (the “Base Indenture” and, together with the First Supplemental Indenture, the “Indenture”). The public offering price of the Notes was 100.0% of the principal amount. The Company received proceeds before payment of expenses and other fees of $135,000. The Company used the proceeds, along with cash from the sale of equity to B. Riley, to fully repay and terminate the Company’s Credit Facility, as defined below, with any remaining proceeds to be used for general corporate purposes, including funding future acquisitions and investments, repaying indebtedness, making capital expenditures and funding working capital. The Notes bear interest at the rate of 8.50% per annum. Interest on the Notes is payable quarterly in arrears on January 31, April 30, July 31 and October 31 of each year, commencing October 31, 2021. The Notes will mature on August 31, 2026. The Company may redeem the Notes for cash in whole or in part at any time (i) on or after August 31, 2023 and prior to August 31, 2024, at a price equal to 103% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption, (ii) on or after August 31, 2024 and prior to August 31, 2025, at a price equal to 102% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption, and (iii) on or after August 31, 2025 and prior to maturity, at a price equal to 100% of their principal amount, plus accrued and unpaid interest to, but excluding, the date of redemption. On and after any redemption date, interest will cease to accrue on the redeemed Notes. If the Company is redeeming less than all of the Notes, the Trustee will select the Notes to be redeemed by such method as the Trustee deems fair and appropriate in accordance with methods generally used at the time of selection by fiduciaries in similar circumstances. The Indenture also contains customary event of default and cure provisions. If an uncured default occurs and is continuing, the Trustee or the holders of not less than 25% in aggregate principal amount of the Notes may declare the Notes to be immediately due and payable. The Notes are senior unsecured obligations of the Company and rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness. As a result of the issuance of the Notes, $12,116 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the accompanying unaudited condensed consolidated statements of operations using the effective interest method through the maturity date of the Notes. Asset-Based Lending Credit Agreement On November 9, 2021, the Company entered into a new Credit Agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A. (“JPMorgan”), as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Credit Agreement provides for a four-year senior secured revolving credit facility with initial aggregate commitments from the lenders of $30,000, which includes $5,000 available for swingline loans, plus an additional $5,000 of capacity available for the issuance of letters of credit if supported by cash collateral provided by the Company (with a right to increase such amount by up to an additional $5,000) (“Aggregate Revolving Commitments”). Availability under the Credit Agreement is subject to a borrowing base calculated based on the value of certain eligible accounts receivable, inventory, and equipment of the Company and subject to redeterminations made in good faith and in the exercise of permitted discretion of JPMorgan. Proceeds of the Credit Agreements may be used for working capital and general corporate purposes. The Credit Agreement provides for borrowings of either base rate loans or Eurodollar loans. Principal amounts borrowed are payable on the maturity date with such borrowings bearing interest that is payable (i) with respect to base rate loans, monthly and (ii) with respect to Eurodollar loans, the last day of each Interest Period (as defined below); provided that if any Interest Period for a Eurodollar loan exceeds three months, interest will be payable on the respective dates that fall every three months after the beginning of such Interest Period. Eurodollar Loans bear interest at a rate per annum equal to the Adjusted LIBOR for one, three or six months (the “Interest Period”), plus an applicable margin of 2.25%. Base rate loans bear interest at a rate per annum equal to the greatest of (i) the agent bank’s reference rate, (ii) the federal funds effective rate plus 50 basis points and (iii) the rate for one month Adjusted LIBOR loans plus 100 basis points, plus an applicable rate of 125 basis points. The Credit Agreement contains a provision for sustainability adjustments annually that will impact the applicable margin by between positive 0.05% and negative 0.05% based on the achievement, or lack thereof, of certain metrics agreed upon between JPMorgan and the Company and publicly reported through the Company’s annual non-financial sustainability report. The Credit Agreement is guaranteed by certain of the Company’s subsidiaries and is secured by substantially all of the Company’s and such subsidiaries’ assets. The Credit Agreement contains customary restrictive covenants for asset-based loans that may limit the Company’s ability to, among other things: incur additional indebtedness, sell assets, make loans to others, make investments, enter into mergers, make certain restricted payments, incur liens, and engage in certain other transactions without the prior consent of the lenders. A covenant testing period (“Covenant Testing Period”) is a period in which excess availability (which is defined in the Credit Agreement as the sum of availability and an amount up to $1,000) is less than the greater of (a) 12.5% of the lesser of the aggregate revolving commitments and the borrowing base, (b) the lesser of $7,500 and the PP&E Component as defined in the Credit Agreement, and (c) $3,500, for three consecutive business days. During a Covenant Testing Period, the Credit Agreement requires the Company to maintain a fixed charge coverage ratio as defined in the Credit Agreement, determined for any period of twelve (12) consecutive months ending on the last day of each fiscal quarter, of at least 1.00 to 1.00. As of September 30, 2022, the Company has $8,800 drawn on the Credit Agreement. Outstanding letters of credit were $10,687 and $19,027 as of September 30, 2022 and December 31, 2021. As of September 30, 2022, all outstanding letters of credit were issued with JPMorgan. On August 15, 2022, the Company entered into Amendment No. 1 to the Credit Agreement (the “Credit Agreement Amendment”) with JPMorgan Chase Bank, N.A., as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Credit Agreement Amendment, among other things, permitted the Company (and certain of its subsidiaries) to execute the Term Loan Agreement and guarantee the Term Loan Agreement borrower’s obligations under the Term Loan Agreement. Additionally, the Credit Agreement Amendment permits the Company to include certain gains on ARO settlements and cash received for deferred gains from ERT projects in the calculation of the Company’s fixed charge coverage ratio under the Credit Agreement's financial covenant. On November 14, 2022, the Company entered into Amendment No. 2 to the Credit Agreement (the “ Second Credit Agreement Amendment”) with JPMorgan Chase Bank, N.A., as administrative agent, the lenders party thereto and certain subsidiary guarantors named therein. The Second Credit Agreement Amendment, among other things, changed the benchmark rate floor on such loans from the LIBO Rate to the Adjusted Term SOFR Rate, increased the revolver Term Benchmark spread from 2.25% to 2.75%, and modified the test for the Covenant Testing Period such that any excess borrowing base over the revolving commitment amount could reduce the threshold that triggers the covenant test up to $2,000. Additionally, the Second Credit Agreement Amendment permits the Company to include $15,000 of equity contributions in "EBITDA", as defined in the Second Credit Agreement Amendment, for the fourth quarter of 2022. As of November 14, 2022, based on the undrawn letters of credit utilization of $10,687, borrowings of $8,800 under the Credit Agreement and applicable financial covenant requirements, springing covenants would become applicable if the Company were to borrow an additional $3,898 under the Credit Agreement. As of September 30, 2022, after taking into account the terms of the Credit Agreement Amendment, the Company would not have met the financial covenant had there been a Covenant Testing Period and the financial covenant had been in effect. As a result of entering into the Credit Agreement, $1,443 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the unaudited condensed consolidated Statements of Operations using the straight-line method through the maturity date of the Credit Agreement. Unamortized debt issuance costs as of September 30, 2022 and December 31, 2021 were $1,142 and $1,338, respectively, and classified in other assets in the accompanying unaudited condensed consolidated balance sheets. Term Loan Agreement On August 15, 2022, the Company, through its GCERG subsidiary (the “Term Loan Borrower”), entered into a term loan agreement (the “Term Loan Agreement”) with Charah Preferred Stock Aggregator, LP, an affiliate of Bernhard Capital Partners Management, LP (“BCP”). As a result of unexpected operating losses, an increase in contract assets and accelerated cash outflows for remediation activities on an ERT project that led to a decrease in cash during the six months ended June 30, 2022, the Company sought additional financing options to fund ongoing operations and project level investment. The Term Loan Agreement was executed to provide additional liquidity for the Company and accelerate the timing of the Company's cash flows for anticipated sales of the GCERG real estate parcels. The Term Loan Agreement provides for a delayed-draw term loan in an aggregate principal amount of $20,000. Borrowings can be requested at any date before October 24, 2022. The Term Loan Agreement is scheduled to mature on the earlier of the sale of the remaining GCERG real estate parcels or April 15, 2024. Borrowings under the Term Loan Agreement accrue interest at a percentage per annum equal to 12.0%, with interest payments due on the first business day of each calendar quarter following the effective date of the Term Loan Agreement and on the maturity date. The Term Loan Borrower agreed to pay a commitment fee equal to $1,000 that is payable on the earliest of (i) April 15, 2024, (ii) the date on which the loans are redeemed in full and all commitments are terminated and (iii) the date on which all commitments are terminated in full. The Term Loan Agreement is secured by a lien on, and security interest in, substantially all of the Term Loan Borrower’s assets, including real property, and is guaranteed on an unsecured basis by the Company and Charah, LLC. Voluntary prepayments are permitted at any time, without premium or penalty. The Term Loan Agreement contains certain customary representations and warranties and affirmative and negative covenants. The negative covenants include, subject to customary exceptions, limitations on indebtedness, investments and acquisitions, mergers and consolidations, restricted payments, transactions with affiliates, liens and dispositions. The Term Loan Agreement allows the Term Loan Borrower to make distributions to its equity holders with the proceeds of the loans made thereunder. The Term Loan Agreement contains customary events of default. If an event of default occurs and is continuing, the lenders may declare all loans to be immediately due and payable. As of September 30, 2022, the Term Loan Borrower had borrowings of $16,000 under the Term Loan Agreement. On November 8, 2022, the Company elected to draw down the remaining $4,000 available under the Term Loan Agreement to fund operating activities. As a result of entering into the Term Loan Agreement, $487 of third-party fees were capitalized as debt issuance costs that will be amortized through interest expense, net in the unaudited condensed consolidated statements of operations using the effective interest method through the maturity date of the Term Loan Agreement. Previous Credit Facility On September 21, 2018, we entered into a credit agreement (the “Credit Facility”) by and among us, the lenders party thereto from time to time and Bank of America, N.A., as administrative agent (the “Administrative Agent”). The Credit Facility included: • A revolving loan not to exceed $50,000 (the “Revolving Loan”); • A term loan of $205,000 (the “Closing Date Term Loan”); and • A commitment to loan up to a further $25,000 in term loans, which expired in March 2020 (the “Delayed Draw Commitment” and the term loans funded under such Delayed Draw Commitment, the “Delayed Draw Term Loan,” together with the Closing Date Term Loan, the “Term Loan”). Pursuant to the terms of the Credit Facility and its related amendments, all amounts associated with the Revolving Loan and the Term Loan under the Credit Facility were set to mature in July 2022. The interest rates per annum applicable to the loans under the Credit Facility were based on a fluctuating rate of interest measured by reference to, at our election, either (i) the Eurodollar rate, currently LIBOR, or (ii) an alternative base rate. Various margins were added to the interest rate based upon our consolidated net leverage ratio (as defined in the Credit Facility). Customary fees were payable regarding the Credit Facility and included (i) commitment fees for the unused portions of the Credit Facility and (ii) fees on outstanding letters of credit. Amounts borrowed under the Credit Facility were secured by substantially all of the assets of the Company. The Credit Facility contained various customary representations, warranties, restrictive covenants, certain affirmative covenants, including reporting requirements, and customary events of default. The following table summarizes the major components of debt at each balance sheet date and provides maturities and interest rate ranges for each major category as of September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Various equipment notes entered into in November 2017, payable in monthly installments ranging from $6 to $24, including interest at 5.2%, maturing in December 2022 through December 2023. The notes are secured by equipment with a net book value of $96 as of September 30, 2022. $ 847 $ 1,748 Various equipment notes entered into in 2018, payable in monthly installments ranging from $1 to $39, including interest ranging from 5.6% to 6.8%, maturing in March 2023 through May 2025. The notes are secured by equipment with a net book value of $3,948 as of September 30, 2022. 4,364 5,952 Various equipment notes entered into in 2019, payable in monthly installments ranging from $2 to $23, including interest ranging from 3.9% to 6.4%, maturing in April 2024 through December 2024. The notes are secured by equipment with a net book value of $1,603 as of September 30, 2022. 1,973 2,633 Various equipment notes entered into in 2020, payable in monthly installments ranging from $9 to $10, including interest of 5.4%, maturing in August 2025. The notes are secured by equipment with a net book value of $1,410 as of September 30, 2022. 1,320 1,624 Various equipment notes entered into in 2021, payable in monthly installments ranging from $3 to $9, including interest ranging from 4.0% to 6.5%, maturing in February 2026 through August 2026. The notes are secured by equipment with a net book value of $1,749 as of September 30, 2022. 1,580 1,861 An equipment note entered into in 2022 with a customer, payable in monthly installments of $68 with no interest component, maturing with a balloon payment of the remaining outstanding balance in April 2023. The note is secured by equipment with a net book value of $3,991 as of September 30, 2022. 3,991 — Various commercial insurance premium financing agreements entered into in 2021, payable in monthly installments ranging from $24 to $117, including interest ranging from 3.0% to 3.9%, maturing in October 2021 through April 2022. — 467 Various commercial insurance premium financing agreements entered into in 2022, payable in monthly installments ranging from $19 to $143, including interest ranging from 4.2% to 5.3%, maturing in November 2022 through June 2023. 1,300 — A $10,000 equipment line with a bank, entered into in December 2017, secured by all equipment purchased with the proceeds of the loan. Interest is calculated on any outstanding amounts using a fixed rate of 4.5%. The equipment line converted to a term loan in September 2018 with a maturity date of June 22, 2023. The term loan is secured by equipment with a net book value of $1,012 as of September 30, 2022. 1,541 3,387 Senior Unsecured Notes, issued August 2021 (see Note 9). The Notes are senior unsecured obligations of the Company, bearing stated interest at 8.5%, and rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness. 135,000 135,000 Total 151,916 152,672 Less debt issuance costs, net (10,473) (11,444) 141,443 141,228 Less current maturities (12,108) (7,567) Notes payable due after one year $ 129,335 $ 133,661

Mezzanine Equity

Mezzanine Equity	9 Months Ended
	Sep. 30, 2022
Temporary Equity Disclosure [Abstract]
Mezzanine Equity	Mezzanine EquityIn March 2020, the Company entered into an agreement with an investment fund affiliated with BCP to sell 26 (twenty-six thousand) shares of Series A Preferred Stock, par value $0.01 per share (the “Preferred Stock”), with an initial aggregate liquidation preference of $26,000, net of a 3% Original Issue Discount (“OID”) of $780 for net proceeds of $25,220 in a private placement (the “Preferred Stock Offering”). Proceeds from the Preferred Stock Offering were used for liquidity and general corporate purposes. In connection with the issuance of the Preferred Stock, the Company incurred direct expenses of $966, including financial advisory fees, closing costs, legal expenses and other offering-related expenses. The Preferred Stock was initially recorded net of OID and direct expenses, which will be accreted through paid-in-capital as a deemed dividend from the date of issuance through the first possible known redemption date, March 16, 2023. As of September 30, 2022 and December 31, 2021, the Company had accrued dividends of $1,133 and $1,030, respectively, associated with the Preferred Stock, which was recorded at a fair value of $957 and $1,994, respectively, using observable information for similar items and is classified as a level 2 fair value measurement. Dividend Rights The Preferred Stock ranks senior to the Company’s common stock with respect to dividend rights and rights on the distribution of assets in any voluntary or involuntary liquidation, dissolution or winding up of the affairs of the Company. The Preferred Stock had an initial liquidation preference of $1 (one thousand dollars) per share. The holders of the Preferred Stock are entitled to a cumulative dividend paid in cash at the rate of 10.0% per annum on the liquidation preference, payable on a quarterly basis. If we do not declare and pay a cash dividend to the holders of the Preferred Stock, the dividend rate will increase to 13.0% per annum, and the dividends will be paid-in-kind by adding such amount to the liquidation preference. The Company’s intention is to declare and pay in-kind dividends for the foreseeable future. The dividend rate will increase to 16.0% per annum upon the occurrence and during the continuance of an event of default. As of September 30, 2022, the liquidation preference of the Preferred Stock was $36,006. Conversion Features The Preferred Stock is convertible at the option of the holders at any time into shares of common stock by dividing the liquidation preference by a conversion price of $2.77 per share (the “Conversion Price”), which represents a 30% premium to the 20-day volume-weighted average price ended March 4, 2020. As of September 30, 2022, the maximum number of common shares that could be required to be issued if converted is 12,999 (twelve million nine hundred ninety-nine thousand). The conversion rate is subject to the following customary anti-dilution and other adjustments: • the issuance of common stock as a dividend or the subdivision, combination, or reclassification of common stock into a greater or lesser number of shares of common stock; • the dividend, distribution or other issuance of rights, options or warrants to holders of common stock entitling them to subscribe for or purchase shares of common stock at a price per share that is less than the market value for such issuance; • the issuance of a dividend or similar distribution in-kind, which can include shares of any class of capital stock, evidences of the Company’s indebtedness, assets or other property or securities, to holders of common stock; • a transaction in which a subsidiary of the Company ceases to be a subsidiary of the Company as a result of the distribution of the equity interests of the subsidiary to the holders of the Company’s common stock; and • the payment of a cash dividend to the holders of common stock. On or after the three-year anniversary of the date of issuance, if the holders have not elected to convert all their shares of Preferred Stock, the Company may give 30 days’ notice to the holders giving the holders the option to choose, in their sole discretion, to have all outstanding shares of Preferred Stock converted into shares of common stock or redeemed in cash at the then applicable Redemption Price (as defined below). The Company may not issue this conversion notice unless (i) the average volume-weighted average price per share of the Company’s common stock during each of the 20 consecutive trading days before the conversion is greater than 120% of the conversion price; (ii) the Company’s common stock is listed on a national securities exchange; (iii) a registration statement for the re-sale of the common stock is then effective; and (iv) the Company is not then in possession of material non-public information as determined by Regulation FD promulgated under the Exchange Act. The Preferred Stock and the associated dividend payable on March 31, 2020, did not generate a beneficial conversion feature (“BCF”) upon issuance as the fair value of the Company’s common stock was less than the conversion price. If a BCF is recognized, a reduction to paid-in capital and the Preferred Stock will be recorded and subsequently accreted through the first redemption date. Additionally, the Company determined that the nature of the Preferred Stock was more akin to an equity instrument and that the economic characteristics and risks of the embedded conversion options were clearly and closely related to the Preferred Stock. As such, the conversion options were not required to be bifurcated from the host under ASC 815, Derivatives and Hedging . Redemption Rights If the Company undergoes certain change of control transactions, the Company will be required to immediately make an offer to repurchase all of the then-outstanding shares of Preferred Stock for cash consideration per share equal to the greater of (i) 100% of the liquidation preference, including accrued and unpaid dividends, if any, plus, if applicable for a transaction occurring before the third anniversary of the closing, a make-whole premium determined pursuant to a calculation of the present value of the dividends that would have accrued through such anniversary, discounted at a rate equal to the applicable treasury rate plus 0.50% (the “Make-Whole Premium”); provided that if the transaction occurs before the first anniversary of the closing, the Make-Whole Premium shall be no greater than $4,000 and (ii) the closing sale price of the common stock on the date of such redemption multiplied by the number of shares of common stock issuable upon conversion of the outstanding Preferred Stock. On or after the three-year anniversary of the issuance of the Preferred Stock, the Company may redeem the Preferred Stock, in whole or in part, for an amount in cash equal to the greater of (i) the closing sale price of the common stock on the date the Company delivers such notice multiplied by the number of shares of common stock issuable upon conversion of the outstanding Preferred Stock and (ii) (x) if the redemption occurs before the fourth anniversary of the date of the closing, 103% of the liquidation preference, including accrued and unpaid dividends, or (y) if the redemption occurs on or after the fourth anniversary of the date of the closing, the liquidation preference plus accrued and unpaid dividends (the foregoing clauses (i) or (ii), as applicable, the “Redemption Price”). On or after the seven-year anniversary of the date of issuance, the holders have the right, subject to applicable law, to require the Company to redeem the Preferred Stock, in whole or in part, into cash consideration equal to the liquidation preference, including all accrued and unpaid dividends, from any source of funds legally available for such purpose. Since the redemption of the Preferred Stock is contingently or optionally redeemable and therefore not certain to occur, the Preferred Stock is not required to be classified as a liability under ASC 480, Distinguishing Liabilities from Equity . As the Preferred Stock is redeemable in certain circumstances at the option of the holder and is redeemable in certain circumstances upon the occurrence of an event that is not solely within our control, we have classified the Preferred Stock in mezzanine equity in the accompanying unaudited condensed consolidated balance sheets. Liquidation Rights In the event of any liquidation, winding-up or dissolution of the Company, whether voluntary or involuntary, the holders of the Preferred Stock would receive an amount in cash equal to the greater of (i) 100% of the liquidation preference plus a Make-Whole Premium and (ii) the amount such holders would be entitled to receive at such time if the Preferred Stock were converted into Company common stock immediately before the liquidation event. The Make-Whole Premium is removed from the calculation for a liquidation event occurring after the third anniversary of the issuance date. Voting Rights The holders of the Preferred Stock are entitled to vote with the holders of the common stock on an as-converted basis in addition to voting as a separate class as provided by applicable Delaware law and the Company’s organizational documents. The holders, acting exclusively and as a separate class, shall have the right to appoint either a non-voting observer to the Company’s Board of Directors or one director to the Company’s Board of Directors. Registration Rights The holders of the Preferred Stock have certain customary registration rights with respect to the shares of common stock into which the Preferred Stock is converted, pursuant to the terms of a registration rights agreement.

Contract Assets and Liabilities

Contract Assets and Liabilities	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Contract Assets and Liabilities	Revenue We disaggregate our revenue from customers by customer arrangement as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. See details in the table below. Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Construction contracts $ 40,402 $ 48,176 $ 107,338 $ 99,828 Byproduct services 30,106 26,643 81,529 76,508 Raw material sales 11,032 9,342 35,834 23,450 Total revenue $ 81,540 $ 84,161 $ 224,701 $ 199,786 As of September 30, 2022, the Company had remaining performance obligations with an aggregate transaction price of $530,373 on construction contracts for which we recognize revenue over time. We expect to recognize approximately 10% of our remaining performance obligations as revenue during the remainder of 2022, 13% in 2023, 15% in 2024, and 62% thereafter. Revenue associated with our remaining performance obligations includes performance obligations related to our construction contracts. The balance of remaining performance obligations does not include variable consideration that was determined to be constrained as of September 30, 2022. As of September 30, 2022, there were $354 of unapproved change orders associated with project scope changes included in determining the profit or loss on certain construction contracts, of which $0 were approved subsequent to quarter-end. The Company did not have any foreign revenue for the three and nine months ended September 30, 2022 and 2021. The timing of revenue recognition, billings and cash collections results in accounts receivable, contract assets, and contract liabilities on the accompanying unaudited condensed consolidated balance sheets. Our contract assets are as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Retainage 9,438 9,681 Total contract assets $ 26,993 $ 26,844 Our contract liabilities are as follows: September 30, 2022 December 31, 2021 Billings in excess of costs and estimated earnings $ 4,053 $ 5,716 Deferred revenue 1,585 483 Total contract liabilities $ 5,638 $ 6,199 We recognized revenue of $57 and $5,886 for the three and nine months ended September 30, 2022 that was previously included in contract liabilities at December 31, 2021. The Company's net position on uncompleted contracts is as follows: September 30, 2022 December 31, 2021 Costs incurred on uncompleted contracts $ 245,077 $ 227,195 Estimated earnings 15,360 22,331 Total costs and estimated earnings 260,437 249,526 Less billings to date (246,935) (238,079) Net balance in process $ 13,502 $ 11,447 The net balance in process classified on the accompanying unaudited condensed consolidated balance sheets is as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Billings in excess of costs and estimated earnings (4,053) (5,716) Net balance in process $ 13,502 $ 11,447

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company adopted the Charah Solutions, Inc. 2018 Omnibus Incentive Plan (the “2018 Plan”), pursuant to which employees, consultants, and directors of the Company and its affiliates, including named executive officers, are eligible to receive awards. The 2018 Plan provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, bonus stock, dividend equivalents, other stock-based awards, substitute awards, annual incentive awards, and performance awards intended to align the interests of participants with those of Company's stockholders. The Company has reserved 5,007 shares of common stock for issuance under the 2018 Plan. A summary of the Company’s non-vested share activity for the nine months ended September 30, 2022 is as follows: Restricted Stock Performance Stock Total Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Date Fair Value Balance as of December 31, 2021 885 $ 4.62 648 $ 4.24 1,533 $ 4.46 Granted 729 4.10 313 2.97 1,042 3.76 Forfeited (7) 3.21 (231) 6.14 (238) 6.05 Vested (480) 4.73 — — (480) 4.73 Balance as of September 30, 2022 1,127 $ 4.24 730 $ 3.11 1,857 $ 3.79 Restricted Stock Performance Stock Total Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Balance as of December 31, 2021 0.88 $ 4,072 1.26 $ 2,979 1.04 $ 7,051 Balance as of September 30, 2022 1.15 $ 2,063 1.68 $ 1,336 1.36 $ 3,399 Stock-based compensation expense related to the restricted stock issued was $664 and $550 during the three months ended September 30, 2022 and 2021, respectively and $1,813 and $1,308 for the nine months ended September 30, 2022 and 2021, respectively. As of September 30, 2022, total unrecognized stock-based compensation expense related to non-vested awards of restricted stock, net of estimated forfeitures, was $2,943, and is expected to be recognized over a weighted-average period of 1.35 years. The total fair value of awards vested for the three and nine months ended September 30, 2022 was $0 and $2,018, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies From time to time, we are party to various lawsuits, claims and other legal proceedings that arise in the ordinary course of our business. For all such lawsuits, claims and proceedings, we record reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. Although it is difficult to predict the ultimate outcome of these lawsuits, claims and proceedings, we do not believe that the ultimate disposition of any of these matters, individually or in the aggregate, would have a material adverse effect on our results of operations, financial position or cash flows. We maintain liability insurance for certain risks that is subject to certain self-insurance limits. We believe amounts previously recorded are sufficient to cover any liabilities arising from the proceedings with all outstanding legal claims. Except as reflected in such accruals, we are currently unable to estimate a range of reasonably possible loss or a range of reasonably possible loss in excess of the amount accrued for outstanding legal matters.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company had income tax benefit of $77 for the three months ended September 30, 2022 and income tax expense of $203 for the three months ended September 30, 2021, and income tax expense of $342 and $432 for the nine months ended September 30, 2022 and 2021, respectively, due to current state income tax expense and adjustments to the valuation allowance on deferred tax assets. The effective income tax rate for the nine months ended September 30, 2022 was negative 1.0% and includes the effect of the valuation allowance, state income taxes and nondeductible items. The effective income tax rate for the nine months ended September 30, 2022 was less than the federal and state statutory rates primarily due to changes in the valuation allowance, which had an impact of 24.8%. The Company’s income is subject to a federal statutory rate of 21.0% and an estimated state statutory rate of 4.3% before considering the valuation allowance. The Company evaluates its effective income tax rate at each interim period and adjusts it accordingly as facts and circumstances warrant. The determination of the annual estimated effective income tax rate at each interim period requires certain estimates and judgments including, but not limited to, the expected operating income for the year, estimated permanent differences between book and tax amounts, and the likelihood of recovering deferred tax assets generated in the current year. The accounting estimates used to compute the provision for income taxes may change as new events occur and additional information is obtained. At September 30, 2022, deferred tax liabilities, net of deferred tax assets, was $1,259. A valuation allowance has been recorded for the deferred tax assets as the Company has determined that it is not more likely than not that the tax benefits related to all the deferred tax assets will be realized. The Company will continue to evaluate both the positive and negative evidence in determining the need for a valuation allowance on its deferred tax assets.

Loss Per Share

Loss Per Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Loss Per Share	Loss Per Share Basic loss per share is computed by dividing net loss attributable to the Company’s stockholders by the weighted-average number of shares outstanding during the period. Diluted loss per share reflects all potentially dilutive ordinary shares outstanding during the period and is computed by dividing net loss attributable to the Company’s stockholders by the weighted-average number of shares outstanding during the period increased by the number of additional shares that would have been outstanding as dilutive securities. Basic and diluted loss per share is determined using the following information: Three months ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Numerator: Net loss attributable to Charah Solutions, Inc. $ (13,359) $ (1,677) $ (35,002) $ (7,130) Deemed and imputed dividends on Series A Preferred Stock (150) (148) (449) (443) Series A Preferred Stock dividends (956) (1,946) (4,617) (6,161) Net loss attributable to common stockholders $ (14,465) $ (3,771) $ (40,068) $ (13,734) Denominator: Weighted average shares outstanding 33,722 32,277 33,592 30,955 Dilutive share-based awards — — — — Total weighted average shares outstanding, including dilutive shares 33,722 32,277 33,592 30,955 Net loss attributable to common stockholders per common share Basic $ (0.43) $ (0.12) $ (1.19) $ (0.44) Diluted $ (0.43) $ (0.12) $ (1.19) $ (0.44) The holders of the Preferred Stock have non-forfeitable rights to common stock dividends or common stock dividend equivalents. Accordingly, the Preferred Stock qualifies as participating securities. As a result of the net loss per share for the three and nine months ended September 30, 2022 and 2021, the inclusion of all potentially dilutive shares would be anti-dilutive. Therefore, dilutive shares of 14,640 and 12,379 were excluded from the computation of the weighted-average shares for diluted net loss per share for the three months ended September 30, 2022 and 2021, respectively and dilutive shares of 13,976 and 12,064 were excluded from the computation of the weighted-average shares for diluted net loss per share for the nine months ended September 30, 2022 and 2021, respectively. A summary of securities excluded from the computation of diluted earnings per share is presented below: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Diluted earnings per share: Anti-dilutive restricted and performance stock units 2,046 1,298 1,772 1,325 Anti-dilutive Series A Preferred Stock convertible into common stock 12,594 11,081 12,204 10,739 Potentially dilutive securities, excluded as anti-dilutive 14,640 12,379 13,976 12,064

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Preferred Stock and Debt Conversion Investments On November 14, 2022, the Company and an investment fund affiliated with BCP entered into (i) an agreement to sell 30 (thirty thousand) shares of Series B Preferred Stock, par value $0.01 per share (the “Series B Preferred Stock”), with an initial aggregate liquidation preference of $30,000, net of a 4% Original Issue Discount (“OID”) of $1,200 for net proceeds of $28,800 in a private placement (the “Preferred Stock Investment”), and (ii) a binding term sheet to convert the then-outstanding loans under the Term Loan Agreement into equity interests in the remaining real estate associated with our GCERG and CPERG subsidiaries (the “Debt Conversion Investment”). This real estate has a carrying value of $12,077 and is classified within real estate, property and equipment, net in the accompanying unaudited condensed consolidated balance sheets as of September 30, 2022. The Series B Preferred Stock shall rank senior to all classes or series of equity securities of the Company with respect to dividend rights and rights on liquidation. In the event of any liquidation or winding up of the Company, the holder of each share of the Series B Preferred Stock will receive in preference to the holders of the Company common stock a per share amount equal to the greater of (i) the stated value of the Series B Preferred Stock and (ii) the amount such holders would be entitled to receive at such time if the Preferred Stock were converted into Company common stock. Proceeds from the Preferred Stock Investment will be used for liquidity and general corporate purposes. Conversion Features The holder of the Series B Preferred Stock may at any time following the 3-month anniversary of issuance convert all or a portion of the Preferred Stock into common stock of the Company. Each share of Series B Preferred Stock will be convertible into a number of shares of common stock of the Company equal to the purchase price of such share divided by the conversion price, which will be set at an amount representing the volume-weighted average closing price of the Company common stock for the 20-trading days immediately preceding the public announcement of this transaction. At any time after the three-year anniversary of the date of issuance, if the holders have not elected to convert all their shares of Series B Preferred Stock, the Company will have the option to convert all of the then-outstanding shares of Series B Preferred Stock; provided that (i) the closing price of the Company’s common stock exceeds 120% of the conversion price for each of the 20 consecutive trading days prior to the date of conversion, (ii) the Company’s common stock is then listed on a national securities exchange, (iii) a registration statement for re-sale of the Company’s common stock is then effective and (iv) the Company is not then in possession of material non-public information. The Company will provide the holders with 30 days’ notice of its intention to convert the Series B Preferred Stock and the holders will then have the option, in their sole discretion, to have their Series B Preferred Stock converted at the then-applicable Conversion Price or redeemed in cash at the Company’s redemption price as defined in the agreement. In the event the holders elect to have the Series B Preferred Stock redeemed in cash and the Company is unable to redeem the Series B Preferred Stock in cash, then the holders shall not be required to participate in any conversion and shall retain their then-outstanding Series B Preferred Stock in all respects. Redemption Rights If a change of control of the Company occurs, subject to the payment in full of all obligations under the Credit Agreement, the Company will be required to immediately make an offer to repurchase all of the then-outstanding shares of Series B Preferred Stock for cash consideration per share equal to the Company’s redemption price as defined in the agreement. Unless the holders buy all or substantially all of the Company’s assets in a transaction or a series of related transactions approved by the Company’s board of directors, no acquisition or disposition of securities by the holders shall constitute a change of control hereunder. At any time after the 30-month anniversary of the date of closing, the holders will have the option to require the Company to redeem any or all of the then-outstanding shares of Series B Preferred Stock for cash consideration equal to the stated value provided that the Company has the financial means and subject to the approval of the Company's lender if required under a customary credit facility. At any time after the 30-month anniversary of the date of closing, and upon not less than 30 days prior written notice, if the holders have not elected to convert or redeem all their shares of Series B Preferred Stock, the Company may elect to redeem all shares of Series B Preferred Stock for an amount equal to the greater of (i) the closing sale price of the Common Stock on the date the Company delivers such notice multiplied by the number of shares of Common Stock issuable upon conversion of the outstanding Series B Preferred Stock and (ii) the stated value. Voting Rights The holders of the Series B Preferred Stock are entitled to vote with the holders of the common stock on an as-converted basis and not as a separate class. The voting power of the Series B Preferred Stock will be limited to 5.0% of the outstanding common stock of the Company. Registration Rights The holders of the Series B Preferred Stock will receive (i) customary transferable shelf registration rights pertaining to the Preferred Stock and any shares of Company common stock issued upon the conversion thereof and (ii) customary piggyback and demand rights in respect of any Company common stock issued upon the conversion of any preferred stock, in each case, by amendment to the Company’s current registration rights agreement or otherwise and on terms consistent therewith. Debt Conversion Investment: Under the binding terms of the Debt Conversion Investment, the Company, through its wholly-owned subsidiary Charah Environment Redevelopment Group ("CERG"), shall maintain responsibility for any abatement, investigation, clean-up, removal action, remedial action, restoration, repair, response action, corrective action, monitoring, sampling and analysis, installation, reclamation, closure, or post-closure in connection with the suspected, threatened or actual release of hazardous materials in connection with the environmental conditions or environmental compliance of GCERG or CPERG. Additionally, CERG shall indemnify and save and hold harmless the holders of the investment and its respective affiliates (including each of its and their respective officers, directors, employees, direct and indirect equity holders, agents, affiliates, representatives, successors and assigns) harmless from and against any and all losses suffered or incurred in connection with any liability arising out of or resulting from environmental conditions or environmental compliance associated with GCERG or CPERG. CERG shall accept and retain and be responsible for, and pay, satisfy and discharge when due, any and all liabilities, whether arising before, on or after the date of the closing, and irrespective of whether such liabilities attached or accrue to GCERG or CPERG, CERG, or the holders in the first instance, relating to, resulting from or arising out of any environmental conditions or environmental compliance associated with GCERG or CPERG. Reverse Stock Split

Nature of Business and Basis _2

Nature of Business and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business Operations and Basis for Presentation	Description of Business Operations The Company is a leading national service provider of mission-critical environmental services and byproduct recycling to the power generation industry, enabling our customers to address challenges related to the remediation of coal ash ponds and landfills at open and closed power plant sites while continuously operating and providing necessary electric power to communities nationwide. Services offered include a suite of remediation and compliance services, byproduct services, raw material sales and Environmental Risk Transfer (“ERT”) services. The Company has corporate offices in Kentucky and North Carolina and principally operates in the eastern and mid-central United States. Under the Jumpstart Our Business Startups Act (the “JOBS Act”), the Company meets the definition of an “emerging growth company,” which allows the Company to have an extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act. The Company intends to take advantage of the reduced reporting requirements and exemptions, including the longer phase-in periods for adopting new or revised financial accounting standards under Section 107 of the JOBS Act until the Company is no longer an emerging growth company. Among other things, we are not required to provide an auditor attestation report on the assessment of the internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act of 2002 and our disclosure obligations regarding executive compensation may be reduced. We may take advantage of these provisions until the last day of our fiscal year following the fifth anniversary of the IPO, or December 31, 2023. However, if certain events occur before the end of such five-year period, including if we become a “large accelerated filer,” our annual gross revenue exceeds $1.07 billion, or we issue more than $1.0 billion of non-convertible debt in any three-year period, we will cease to be an emerging growth company before the end of such five-year period. Basis for Presentation The Company’s fiscal year ends December 31. The accompanying unaudited condensed consolidated financial statements include the assets, liabilities, stockholders’ equity and results of operations of the Company and its consolidated subsidiaries. Intercompany transactions and balances have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with rules and regulations of the Securities and Exchange Commission for quarterly reports on Form 10-Q. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, which consist of normal recurring adjustments. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021.
Segment Information	Segment Information The Company operates as one reportable segment, reflecting the suite of end-to-end services we offer our utility partners and how our Chief Operating Decision Maker (“CODM”) reviews consolidated financial information to evaluate results of operations, assess performance and allocate resources. Due to the nature of the Company’s business, the Company's Chief Executive Officer, who is also the CODM, evaluates the performance of the Company and allocates resources of the Company based on consolidated gross profit, general and administrative expenses, balance sheet, liquidity, capital spending, safety statistics and business development reports for the Company as a whole. Since the Company has a single operating segment, all required financial segment information can be found in the unaudited condensed consolidated financial statements. We provide the following services through our one segment: remediation and compliance services, byproduct services, raw material sales and ERT services. Remediation and compliance services are associated with our customers’ need for multi-year environmental improvement and sustainability initiatives, whether driven by regulatory requirements, power generation customer initiatives or consumer expectations and standards. Byproduct services consist of recurring and mission-critical coal ash management and operations for coal-fired power generation facilities while also supporting both our power generation customers’ desire to recycle their recurring and legacy volumes of coal combustion residuals (“CCRs”), commonly known as coal ash, and our ultimate end customers’ need for high-quality, cost-effective supplemental cementitious materials (“SCMs”) that provide a sustainable, environmentally-friendly substitute for Portland cement in concrete. Our raw material sales provide customers with the raw materials essential to their business while also providing the sourcing, logistics, and management needed to facilitate these raw material transactions around the globe. ERT services represent an innovative solution designed to meet our coal-fired plant energy providers’ evolving and increasingly complex plant closure and environmental remediation needs. These customers need to retire and decommission older or underutilized assets while maximizing the assets’ value and improving the environment. Our ERT services manage the sites’ environmental remediation requirements, benefiting the communities and lowering the coal-fired plant energy providers’ costs.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , requiring all leases to be recognized on the balance sheet as a right-of-use asset and a lease liability unless the lease is a short-term lease (generally a lease with a term of 12 months or less). At the commencement date of the lease, the Company will recognize: (i) a lease liability for the Company’s obligation to make payments under the lease agreement, measured on a discounted basis; and (ii) a right-of-use asset that represents the Company’s right to use, or control the use of, the specified asset for the lease term. This ASU originally required recognition and measurement of leases at the beginning of the earliest period presented using a modified retrospective transition method. In July 2018, the FASB issued ASU No. 2018-11, which provided an additional (and optional) transition method that permits the application of this ASU at the adoption date with recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. In June 2020, the FASB issued ASU No. 2020-05 and delayed the effective date of this ASU, extending the effective date for non-public business entities, and making the ASU effective for the Company for the fiscal year ending December 31, 2022, and interim periods within the fiscal year ending December 31, 2023, with early adoption permitted. The Company has not yet selected a transition method and, while we are still in the process of assessing the impact of this new standard on our consolidated financial position, results of operations and cash flows, we expect the adoption of this standard will have a material impact on our consolidated financial position due to the recognition of the right-of-use asset and lease liability related to operating leases. We had operating leases with remaining rental payments of approximately $21,710 as of September 30, 2022. The discounted minimum remaining rental payments will be the starting point for determining the right-of-use asset and lease liability. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments , which introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. The new model will apply to: (1) loans, accounts receivable, trade receivables, and other financial assets measured at amortized cost, (2) loan commitments and certain other off-balance sheet credit exposures, (3) debt securities and other financial assets measured at fair value through other comprehensive income, and (4) beneficial interests in securitized financial assets. The amendments contained in this ASU will be applied through a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. In November 2018, the FASB issued ASU No. 2018-19, which amended the effective date of ASU No. 2016-13 and clarified that receivables arising from operating leases are not within the scope of Subtopic 326-20. In October 2019, the FASB delayed the effective date of this ASU, extending the effective date for non-public business entities and making the ASU effective for the Company for the fiscal year ending December 31, 2023, and interim periods therein, with early adoption permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting . The ASU provides optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference the London Inter-bank Offered Rate (“LIBOR”) or another rate that is expected to be discontinued. In January 2021, the FASB issued ASU No. 2021-01, Reference Rate Reform (Topic 848). This ASU provides supplemental guidance and clarification to ASU No. 2020-04, and these updates must be adopted concurrently, cumulatively referred to as “Topic 848.” The amendments in Topic 848 are currently effective for all entities, and upon adoption, may be applied prospectively to contract modifications made on or before December 31, 2022. The Company is still assessing the impact of Topic 848 on its consolidated financial statements. In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815 – 40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity . This ASU simplifies the guidance on accounting for convertible debt instruments by removing the separation models for convertible debt with a cash conversion feature and convertible debt with a beneficial conversion feature. As a result, after adopting the ASU’s guidance, entities will not separately present in equity an embedded conversion feature in such debt. Instead, they will account for a convertible debt instrument wholly as debt, and for convertible preferred stock wholly as preferred stock unless certain other conditions are met. Also, the ASU requires the application of the if-converted method for calculating diluted earnings per share and the treasury stock method will no longer be available. This ASU will be effective for the Company for the fiscal year ending December 31, 2024, and interim periods therein, with early adoption permitted. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements.

Asset Acquisitions (Tables)

Asset Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Asset Acquisition, Contingent Consideration	The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (34,300) Direct transaction costs (1,345) Total consideration and transaction costs incurred $ (35,645) Assets Acquired: Restricted Cash $ 2,900 Land, land improvements and structural fill sites 32,109 Plant, machinery and equipment 623 Vehicles 13 Total allocated value of assets acquired $ 35,645 A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 2.50 % Weighted average rate applicable to our long-term asset retirement obligations 7.35 % The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (30,179) Direct transaction costs and accrued expenses (684) Total consideration and transaction costs incurred $ (30,863) Assets Acquired: Cash $ 5,577 Restricted cash 29,762 Total allocated value of assets acquired $ 35,339 Excess of fair value of assets acquired over total consideration – deferred gain $ (4,476) A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 2.50 % Weighted average rate applicable to our long-term asset retirement obligations 7.45 % The assets acquired and liabilities assumed as recognized within the Company's condensed consolidated balance sheet upon closing on the APA consisted of the following: Consideration and direct transaction costs: Asset retirement obligations $ (50,590) Bond and insurance accrued expenses, net (2,229) Direct transaction costs (2,336) Total consideration and transaction costs incurred $ (55,155) Assets Acquired: Cash $ 6,354 Restricted cash 28,546 Water rights 5,196 Land, land improvements and structural fill sites 14,385 Plant, machinery and equipment 610 Vehicles 64 Total allocated value of assets acquired $ 55,155 A summary of the other assumptions included in the fair value measurement of the asset retirement obligations to be recognized upon closing of the APA consisted of the following: Other Assumptions: Inflation rate 3.00 % Weighted average rate applicable to our long-term asset retirement obligations 4.50 %

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Construction contracts $ 40,402 $ 48,176 $ 107,338 $ 99,828 Byproduct services 30,106 26,643 81,529 76,508 Raw material sales 11,032 9,342 35,834 23,450 Total revenue $ 81,540 $ 84,161 $ 224,701 $ 199,786

Balance Sheet Items (Tables)

Balance Sheet Items (Tables)	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Property and Equipment, Net	The following table shows the components of real estate, property and equipment, net: September 30, 2022 December 31, 2021 Plant, machinery and equipment $ 65,370 $ 63,937 Structural fill site improvements 55,760 55,760 Vehicles 11,850 11,718 Office equipment 600 600 Buildings and leasehold improvements 267 267 Land, land improvements and structural fill sites 43,838 12,231 Capital lease assets 46,310 31,172 Construction in progress 616 1,522 Total real estate, property and equipment $ 224,611 $ 177,207 Less: accumulated depreciation (118,532) (106,734) Real estate, property and equipment, net $ 106,079 $ 70,473
Schedule of Capital Leased Assets	The following table shows the components of capital lease assets, net: September 30, 2022 December 31, 2021 Capital lease assets $ 46,310 $ 31,172 Less: accumulated depreciation (10,305) (3,606) Capital lease assets, net $ 36,005 $ 27,566
Schedule of Lease Receivable	The following table reflects the classification of the lease receivable within our accompanying unaudited condensed consolidated balance sheet: September 30, 2022 December 31, 2021 Lease receivable $ 5,875 $ 5,937 Less: current portion in prepaid expenses and other current assets (67) (65) Non-current portion in other assets $ 5,808 $ 5,872
Schedule of Notes Receivable	The following table reflects the classification of the note receivable within our unaudited condensed consolidated balance sheet: September 30, 2022 December 31, 2021 Note receivable $ 1,102 $ 1,352 Less: current portion in prepaid expenses and other current assets (500) (500) Non-current portion in other assets $ 602 $ 852
Schedule of Accrued Liabilities	The following table shows the components of accrued liabilities: September 30, 2022 December 31, 2021 Accrued expenses $ 19,815 $ 25,074 Accrued interest 2,362 2,008 Accrued preferred stock dividends 957 1,994 Accrued payroll and bonuses 2,220 7,798 Accrued liabilities $ 25,354 $ 36,874

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations	The following table reflects the activity for our asset retirement obligations: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Balance, beginning of period $ 83,729 $ 52,361 $ 42,413 $ 5,159 Liabilities acquired — — 64,479 50,590 Liabilities settled (8,408) (1,805) (28,291) (5,980) Accretion 2,429 538 3,157 1,325 Gain on ARO settlement (978) (1,127) (4,986) (1,127) Balance, end of period 76,772 49,967 76,772 49,967 Less: current portion (44,030) (32,181) (44,030) (32,181) Non-current portion $ 32,742 $ 17,786 $ 32,742 $ 17,786

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Intangible Assets	The Company’s intangible assets consist of the following: September 30, 2022 December 31, 2021 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Definite-lived intangibles Customer relationships $ 78,942 $ (44,648) $ 34,294 $ 78,942 $ (38,727) $ 40,215 Indefinite-lived intangibles Charah trade name 13,316 13,316 Total $ 47,610 $ 53,531

Notes Payable (Tables)

Notes Payable (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Debt	The following table summarizes the major components of debt at each balance sheet date and provides maturities and interest rate ranges for each major category as of September 30, 2022 and December 31, 2021: September 30, 2022 December 31, 2021 Various equipment notes entered into in November 2017, payable in monthly installments ranging from $6 to $24, including interest at 5.2%, maturing in December 2022 through December 2023. The notes are secured by equipment with a net book value of $96 as of September 30, 2022. $ 847 $ 1,748 Various equipment notes entered into in 2018, payable in monthly installments ranging from $1 to $39, including interest ranging from 5.6% to 6.8%, maturing in March 2023 through May 2025. The notes are secured by equipment with a net book value of $3,948 as of September 30, 2022. 4,364 5,952 Various equipment notes entered into in 2019, payable in monthly installments ranging from $2 to $23, including interest ranging from 3.9% to 6.4%, maturing in April 2024 through December 2024. The notes are secured by equipment with a net book value of $1,603 as of September 30, 2022. 1,973 2,633 Various equipment notes entered into in 2020, payable in monthly installments ranging from $9 to $10, including interest of 5.4%, maturing in August 2025. The notes are secured by equipment with a net book value of $1,410 as of September 30, 2022. 1,320 1,624 Various equipment notes entered into in 2021, payable in monthly installments ranging from $3 to $9, including interest ranging from 4.0% to 6.5%, maturing in February 2026 through August 2026. The notes are secured by equipment with a net book value of $1,749 as of September 30, 2022. 1,580 1,861 An equipment note entered into in 2022 with a customer, payable in monthly installments of $68 with no interest component, maturing with a balloon payment of the remaining outstanding balance in April 2023. The note is secured by equipment with a net book value of $3,991 as of September 30, 2022. 3,991 — Various commercial insurance premium financing agreements entered into in 2021, payable in monthly installments ranging from $24 to $117, including interest ranging from 3.0% to 3.9%, maturing in October 2021 through April 2022. — 467 Various commercial insurance premium financing agreements entered into in 2022, payable in monthly installments ranging from $19 to $143, including interest ranging from 4.2% to 5.3%, maturing in November 2022 through June 2023. 1,300 — A $10,000 equipment line with a bank, entered into in December 2017, secured by all equipment purchased with the proceeds of the loan. Interest is calculated on any outstanding amounts using a fixed rate of 4.5%. The equipment line converted to a term loan in September 2018 with a maturity date of June 22, 2023. The term loan is secured by equipment with a net book value of $1,012 as of September 30, 2022. 1,541 3,387 Senior Unsecured Notes, issued August 2021 (see Note 9). The Notes are senior unsecured obligations of the Company, bearing stated interest at 8.5%, and rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness. 135,000 135,000 Total 151,916 152,672 Less debt issuance costs, net (10,473) (11,444) 141,443 141,228 Less current maturities (12,108) (7,567) Notes payable due after one year $ 129,335 $ 133,661

Contract Assets and Liabiliti_2

Contract Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Asset and Liabilities	Our contract assets are as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Retainage 9,438 9,681 Total contract assets $ 26,993 $ 26,844 Our contract liabilities are as follows: September 30, 2022 December 31, 2021 Billings in excess of costs and estimated earnings $ 4,053 $ 5,716 Deferred revenue 1,585 483 Total contract liabilities $ 5,638 $ 6,199
Costs in Excess of Billings and Billings in Excess of Costs	The Company's net position on uncompleted contracts is as follows: September 30, 2022 December 31, 2021 Costs incurred on uncompleted contracts $ 245,077 $ 227,195 Estimated earnings 15,360 22,331 Total costs and estimated earnings 260,437 249,526 Less billings to date (246,935) (238,079) Net balance in process $ 13,502 $ 11,447 The net balance in process classified on the accompanying unaudited condensed consolidated balance sheets is as follows: September 30, 2022 December 31, 2021 Costs and estimated earnings in excess of billings $ 17,555 $ 17,163 Billings in excess of costs and estimated earnings (4,053) (5,716) Net balance in process $ 13,502 $ 11,447

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of the Company’s non-vested share activity for the nine months ended September 30, 2022 is as follows: Restricted Stock Performance Stock Total Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Date Fair Value Balance as of December 31, 2021 885 $ 4.62 648 $ 4.24 1,533 $ 4.46 Granted 729 4.10 313 2.97 1,042 3.76 Forfeited (7) 3.21 (231) 6.14 (238) 6.05 Vested (480) 4.73 — — (480) 4.73 Balance as of September 30, 2022 1,127 $ 4.24 730 $ 3.11 1,857 $ 3.79 Restricted Stock Performance Stock Total Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Weighted Average Remaining Contractual Terms (Years) Aggregate Intrinsic Value Balance as of December 31, 2021 0.88 $ 4,072 1.26 $ 2,979 1.04 $ 7,051 Balance as of September 30, 2022 1.15 $ 2,063 1.68 $ 1,336 1.36 $ 3,399

Loss Per Share (Tables)

Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Schedule of Loss Per Share, Basic and Diluted	Basic and diluted loss per share is determined using the following information: Three months ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Numerator: Net loss attributable to Charah Solutions, Inc. $ (13,359) $ (1,677) $ (35,002) $ (7,130) Deemed and imputed dividends on Series A Preferred Stock (150) (148) (449) (443) Series A Preferred Stock dividends (956) (1,946) (4,617) (6,161) Net loss attributable to common stockholders $ (14,465) $ (3,771) $ (40,068) $ (13,734) Denominator: Weighted average shares outstanding 33,722 32,277 33,592 30,955 Dilutive share-based awards — — — — Total weighted average shares outstanding, including dilutive shares 33,722 32,277 33,592 30,955 Net loss attributable to common stockholders per common share Basic $ (0.43) $ (0.12) $ (1.19) $ (0.44) Diluted $ (0.43) $ (0.12) $ (1.19) $ (0.44)
Schedule of Antidilutive Securities Excluded from Computation	A summary of securities excluded from the computation of diluted earnings per share is presented below: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 Diluted earnings per share: Anti-dilutive restricted and performance stock units 2,046 1,298 1,772 1,325 Anti-dilutive Series A Preferred Stock convertible into common stock 12,594 11,081 12,204 10,739 Potentially dilutive securities, excluded as anti-dilutive 14,640 12,379 13,976 12,064

Nature of Business and Basis _3

Nature of Business and Basis of Presentation (Details) shares in Thousands, $ in Thousands		9 Months Ended
	Nov. 14, 2022 USD ($) shares	Sep. 30, 2022 segment	Dec. 31, 2022	Aug. 15, 2022 USD ($)	Dec. 31, 2021	Dec. 31, 2020 USD ($)
Related Party Transaction [Line Items]
Number of reportable segments | segment		1
COVID-19
Related Party Transaction [Line Items]
Deferred employee payroll taxes						$ 1,637
Accrued payroll taxes, percentage of deferred payment					50%
COVID-19 | Forecast
Related Party Transaction [Line Items]
Accrued payroll taxes, percentage of deferred payment			50%
Term Loan Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Face amount of delayed-draw term loan				$ 20,000
Series B Preferred Stock | Subsequent Event
Related Party Transaction [Line Items]
Number of shares to be issued in transaction (in shares) | shares	30
Preferred stock liquidation preference value	$ 30,000
Issuance of the preferred stock	$ 28,800
Charah Solutions | BCP
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners		60%

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements - (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Accounting Changes and Error Corrections [Abstract]
Rental payments	$ 21,710

Asset Acquisitions - Narrative

Asset Acquisitions - Narrative (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 06, 2022 USD ($) a ashPond	Feb. 28, 2021 a	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) acquisition	Sep. 30, 2021 USD ($)	Apr. 04, 2022 a
Schedule of Asset Acquisition [Line Items]
Number of acquisitions during period | acquisition					2
Net proceeds from the sales of real estate, property and equipment					$ 11,951,000	$ 10,114,000
Gains on sales of real estate, property and equipment, net			$ 2,601,000	$ 2,998,000	8,942,000	6,241,000
Number of ash ponds | ashPond	2
Realization of deferred gain on ERT project performance			(167,000)		(167,000)	0
Property redevelopment term		34 months
Real Property Acreage
Schedule of Asset Acquisition [Line Items]
Net proceeds from the sales of real estate, property and equipment			0	$ 0	0	$ 0
Sale Of Plant, Machinery And Equipment And Vehicles
Schedule of Asset Acquisition [Line Items]
Book value of assets held for sale sold			505,000		505,000
Net proceeds from the sales of real estate, property and equipment					1,565,000
Gains on sales of real estate, property and equipment, net	$ 387,000				1,060,000
Asset Purchase Agreement
Schedule of Asset Acquisition [Line Items]
Asset acquisition deferred gain	$ 4,476,000
Decommissioning and redevelopment period, after acquisition	42 months
Post closure monitoring period	30 years
Avon Lake Property
Schedule of Asset Acquisition [Line Items]
Area of land | a							40
Cheswick Generating Station Asset Acquisition Primary Generating Station Site
Schedule of Asset Acquisition [Line Items]
Area of land | a	56
Cheswick Generating Station Asset Acquisition
Schedule of Asset Acquisition [Line Items]
Area of land | a	27
Cheswick Generating Station In Cheswick, PA
Schedule of Asset Acquisition [Line Items]
Area of land | a	182
Cheswick Generating Station Asset Acquisition Landfill Facility
Schedule of Asset Acquisition [Line Items]
Area of land | a	50
Gibbons Creek Steam Electric Station And Reservoir
Schedule of Asset Acquisition [Line Items]
Area of land | a		4,860
Sale of property percentage		80%
Gibbons Creek Steam Electric Station And Reservoir | Sale Of Plant, Machinery And Equipment And Vehicles
Schedule of Asset Acquisition [Line Items]
Book value of assets held for sale sold			$ 193,000		$ 193,000
Texas Municipal Power Agency
Schedule of Asset Acquisition [Line Items]
Area of land | a		6,166
Gibbons Creek Steam Reservoir, Dam and Floodway
Schedule of Asset Acquisition [Line Items]
Area of land | a		3,500

Asset Acquisitions - Assets Acq

Asset Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Apr. 06, 2022	Apr. 04, 2022	Feb. 28, 2021	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Consideration and direct transaction costs:
Asset retirement obligations				$ (76,772)	$ (83,729)	$ (42,413)	$ (49,967)	$ (52,361)	$ (5,159)
Asset Purchase Agreement
Consideration and direct transaction costs:
Asset retirement obligations	$ (30,179)	$ (34,300)	$ (50,590)
Bond and insurance accrued expenses, net			(2,229)
Direct transaction costs	(684)	(1,345)	(2,336)
Total consideration and transaction costs incurred	(30,863)	(35,645)	(55,155)
Assets Acquired:
Cash	5,577		6,354
Restricted cash	29,762	2,900	28,546
Water rights			5,196
Land, land improvements and structural fill sites		32,109	14,385
Plant, machinery and equipment		623	610
Vehicles		13	64
Total allocated value of assets acquired	35,339	$ 35,645	$ 55,155
Excess of fair value of assets acquired over total consideration – deferred gain	$ (4,476)
Other Assumptions:
Inflation rate	2.50%	2.50%	3%
Weighted average rate applicable to our long-term asset retirement obligations	7.45%	7.35%	4.50%

Revenue - Schedule of Disaggreg

Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 81,540	$ 84,161	$ 224,701	$ 199,786
Construction contracts
Disaggregation of Revenue [Line Items]
Total revenue	40,402	48,176	107,338	99,828
Byproduct services
Disaggregation of Revenue [Line Items]
Total revenue	30,106	26,643	81,529	76,508
Raw material sales
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,032	$ 9,342	$ 35,834	$ 23,450

Revenue - Performance Obligatio

Revenue - Performance Obligations (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 530,373
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue from Contract with Customer [Abstract]
Expected timing of satisfaction, period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	10%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue from Contract with Customer [Abstract]
Expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	13%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue from Contract with Customer [Abstract]
Expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	15%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue from Contract with Customer [Abstract]
Expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	62%

Revenue - Narrative (Details)

Revenue - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Unapproved change orders	$ 354,000		$ 354,000
Approved change orders	0		0
Revenue	81,540,000	$ 84,161,000	224,701,000	$ 199,786,000
Non-US
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 0

Balance Sheet Items - Schedule

Balance Sheet Items - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	$ 224,611	$ 177,207
Less: accumulated depreciation	(118,532)	(106,734)
Real estate, property and equipment, net	106,079	70,473
Plant, machinery and equipment
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	65,370	63,937
Structural fill site improvements
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	55,760	55,760
Vehicles
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	11,850	11,718
Office equipment
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	600	600
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	267	267
Land, land improvements and structural fill sites
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	43,838	12,231
Capital lease assets
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	46,310	31,172
Construction in progress
Property, Plant and Equipment [Line Items]
Total real estate, property and equipment	$ 616	$ 1,522

Balance Sheet Items - Narrative

Balance Sheet Items - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Land improvements			$ 5,870		$ 5,870
Demolition cost capitalized			192	$ 1,365	1,802	$ 2,395
Cost basis on scrap sold			348	1,003	2,304	1,342
Depreciation			$ 5,034	$ 4,289	$ 14,477	12,657
Sale leaseback transaction, terms		30 years
Discount rate			3.90%		3.90%
Gain on sales-type lease					$ 0	$ 5,568
Non-current assets held for sale	$ 2,852
Proceeds from sale of assets	$ 1,250
Asset sale agreement, final payment to be received, term	36 months

Balance Sheet Items - Capital L

Balance Sheet Items - Capital Lease Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Capital lease assets	$ 46,310	$ 31,172
Less: accumulated depreciation	(10,305)	(3,606)
Capital lease assets, net	$ 36,005	$ 27,566

Balance Sheet Items - Lease Rec

Balance Sheet Items - Lease Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Lease receivable	$ 5,875	$ 5,937
Less: current portion in prepaid expenses and other current assets	(67)	(65)
Non-current portion in other assets	$ 5,808	$ 5,872

Balance Sheet Items - Note Rece

Balance Sheet Items - Note Receivable (Details) - Notes Receivable - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Note receivable	$ 1,102	$ 1,352
Less: current portion in prepaid expenses and other current assets	(500)	(500)
Non-current portion in other assets	$ 602	$ 852

Balance Sheet Items - Accrued L

Balance Sheet Items - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued expenses	$ 19,815	$ 25,074
Accrued interest	2,362	2,008
Accrued preferred stock dividends	957	1,994
Accrued payroll and bonuses	2,220	7,798
Accrued liabilities	$ 25,354	$ 36,874

Asset Retirement Obligations -

Asset Retirement Obligations - Narrative (Details) $ in Thousands	Sep. 30, 2022 USD ($) numberOfFillSite	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Asset Retirement Obligation Disclosure [Abstract]
Number of structural sites owned and operated	2
Number of tracts of real property	8
Asset retirement obligation | $	$ 76,772	$ 83,729	$ 42,413	$ 49,967	$ 52,361	$ 5,159

Asset Retirement Obligations _2

Asset Retirement Obligations - Schedule of Asset Retirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance, beginning of period	$ 83,729	$ 52,361	$ 42,413	$ 5,159
Liabilities acquired	0	0	64,479	50,590
Liabilities settled	(8,408)	(1,805)	(28,291)	(5,980)
Accretion	2,429	538	3,157	1,325
Gain on ARO settlement	(978)	(1,127)	(4,986)	(1,127)
Balance, end of period	76,772	49,967	76,772	49,967
Less: current portion	(44,030)	(32,181)	(44,030)	(32,181)	$ (27,534)
Non-current portion	$ 32,742	$ 17,786	$ 32,742	$ 17,786	$ 14,879

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) shares in Thousands		1 Months Ended		3 Months Ended		9 Months Ended
	Nov. 14, 2022	Aug. 31, 2021	Mar. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Aug. 15, 2022	Dec. 31, 2021	Aug. 25, 2021
Series B Preferred Stock | Subsequent Event
Related Party Transaction [Line Items]
Number of shares to be issued in transaction (in shares)	30
Preferred stock liquidation preference value	$ 30,000,000
Issuance of the preferred stock	$ 28,800,000
8.50% Senior Notes due 2026 | Senior Notes
Related Party Transaction [Line Items]
Debt instrument		$ 135,000,000								$ 135,000,000
Interest rate		8.50%		8.50%		8.50%				8.50%
Additional purchase amount		$ 5,000,000
Amendment No. 3 to Credit Agreement | Series A Preferred Stock
Related Party Transaction [Line Items]
Issuance of Series A Preferred Stock, net of issuance costs (in shares)			26
Affiliated Entity | Term Loan Agreement
Related Party Transaction [Line Items]
Face amount of delayed-draw term loan								$ 20,000,000
Affiliated Entity | ATC Group Services, LLC | Environmental Consulting and Engineering Services
Related Party Transaction [Line Items]
Expenses from transactions with related party				$ 1,000	$ 4,000	$ 26,000	$ 83,000
Receivable from related parties				0		0			$ 0
Payable to related parties				$ 0		$ 0			$ 4,000
B. Riley | 8.50% Senior Notes due 2026 | Senior Notes
Related Party Transaction [Line Items]
Debt instrument		80,325,000
Payments of debt issuance costs		$ 7,914,000

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 1,974	$ 1,974	$ 5,921	$ 5,921
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life			10 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Intangible Assets, Gross (Including Goodwill) [Roll Forward]
Intangible assets, net	$ 47,610	$ 53,531
Charah trade name
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-lived intangibles	13,316	13,316
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount	78,942	78,942
Accumulated Amortization	(44,648)	(38,727)
Net Carrying Amount	$ 34,294	$ 40,215

Long-term Debt (Details)

Long-term Debt (Details)						9 Months Ended		12 Months Ended
	Nov. 14, 2022 USD ($)	Nov. 08, 2022 USD ($)	Aug. 15, 2022 USD ($)	Nov. 09, 2021 USD ($) trading_day	Aug. 25, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	Sep. 21, 2018 USD ($)
Debt Instrument [Line Items]
Debt issuance costs						$ 10,473,000		$ 11,444,000
Write off of deferred issuance cost						1,142,000		1,338,000
Affiliated Entity | Term Loan Agreement
Debt Instrument [Line Items]
Debt issuance costs						487,000
Face amount of delayed-draw term loan			$ 20,000,000
Commitment fee			$ 1,000,000
Line of credit						$ 16,000,000
Affiliated Entity | Term Loan Agreement | Subsequent Event
Debt Instrument [Line Items]
Interest rate	12%
Proceeds from term loan		$ 4,000,000
8.50% Senior Notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Debt instrument					$ 135,000,000				$ 135,000,000
Debt instrument, redemption price, percentage					100%
Interest rate					8.50%	8.50%			8.50%
Percentage of principal amount, minimum					25%
Debt issuance costs					$ 12,116,000
8.50% Senior Notes due 2026 | Senior Notes | Period 1
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					103%
8.50% Senior Notes due 2026 | Senior Notes | Period 2
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					102%
8.50% Senior Notes due 2026 | Senior Notes | Period 3
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					100%
8.50% Senior Notes Due 2026, Additional Borrowings | Senior Notes
Debt Instrument [Line Items]
Debt instrument					$ 5,000,000
Credit Agreement
Debt Instrument [Line Items]
Proceeds from term loan						$ 13,000,000	$ 0
Credit Agreement | Senior Notes
Debt Instrument [Line Items]
Debt issuance costs						1,443,000
Credit Agreement | Line of Credit | Maximum
Debt Instrument [Line Items]
Provision for sustainability adjustment, percentage				0.05%
Credit Agreement | Line of Credit | Minimum
Debt Instrument [Line Items]
Provision for sustainability adjustment, percentage				(0.05%)
Credit Agreement | Line of Credit | Adjusted LIBOR Rate
Debt Instrument [Line Items]
Basis spread				2.25%
Additional basis spread on basis spread				1.25%
Credit Agreement | Line of Credit | Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread				0.50%
Credit Agreement | Line of Credit | One Month Adjusted LIBOR Rate
Debt Instrument [Line Items]
Basis spread				1%
Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, term				4 years
Maximum borrowing capacity				$ 30,000,000
Accordion feature, higher borrowing capacity option				5,000,000
Maximum availability				$ 1,000,000
Percentage of lesser of the aggregate revolving commitments and the borrowing base				0.125
PP&E component				$ 7,500,000
Line of credit facility, consecutive business days, maximum borrowing capacity				$ 3,500,000
Line of credit facility, consecutive business day | trading_day				3
Line of credit facility, threshold consecutive months | trading_day				12
Line of credit facility, fixed charge coverage ratio				1
Remaining borrowing capacity						8,800,000
Credit Agreement | Line of Credit | Revolving Credit Facility | Subsequent Event
Debt Instrument [Line Items]
Remaining borrowing capacity	$ 8,800,000
Excess borrowing amount threshold, covenant test trigger	2,000,000
Debt covenant, equity contributions amount in EBITDA, threshold	15,000,000
Additional borrowing amount which would make springing covenants applicable	$ 3,898,000
Credit Agreement | Line of Credit | Revolving Credit Facility | Adjusted LIBOR Rate
Debt Instrument [Line Items]
Basis spread				2.25%
Credit Agreement | Line of Credit | Revolving Credit Facility | Adjusted LIBOR Rate | Subsequent Event
Debt Instrument [Line Items]
Basis spread	2.75%
Credit Agreement | Line of Credit | Bridge Loan
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 5,000,000
Credit Agreement | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 5,000,000
Letters of credit outstanding						$ 10,687,000		$ 19,027,000
Credit Agreement | Line of Credit | Letter of Credit | Subsequent Event
Debt Instrument [Line Items]
Remaining borrowing capacity	$ 10,687,000
Syndicated Credit Facility | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity										$ 50,000,000
Syndicated Credit Facility | Line of Credit | Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity										205,000,000
Syndicated Credit Facility | Line of Credit | Loan Commitment
Debt Instrument [Line Items]
Accordion feature, higher borrowing capacity option										$ 25,000,000

Notes Payable - Schedule of Deb

Notes Payable - Schedule of Debt (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Aug. 31, 2021	Aug. 25, 2021
Debt Instrument [Line Items]
Total	$ 151,916,000	$ 152,672,000
Less debt issuance costs, net	(10,473,000)	(11,444,000)
Long-term debt	141,443,000	141,228,000
Less current maturities	(12,108,000)	(7,567,000)
Notes payable due after one year	129,335,000	133,661,000
Notes Payable | Equipment Notes Payable, 5.2% Due December 2022 and 2023
Debt Instrument [Line Items]
Total	$ 847,000	1,748,000
Interest rate	5.20%
Equipment net book value	$ 96,000
Notes Payable | Equipment Notes Payable, 5.2% Due December 2022 and 2023 | Minimum
Debt Instrument [Line Items]
Monthly installments	6,000
Notes Payable | Equipment Notes Payable, 5.2% Due December 2022 and 2023 | Maximum
Debt Instrument [Line Items]
Monthly installments	24,000
Notes Payable | Equipment Notes Payable, 5.6% to 6.8% Due March 2023 Through May 2025
Debt Instrument [Line Items]
Total	4,364,000	5,952,000
Equipment net book value	3,948,000
Notes Payable | Equipment Notes Payable, 5.6% to 6.8% Due March 2023 Through May 2025 | Minimum
Debt Instrument [Line Items]
Monthly installments	$ 1,000
Interest rate	5.60%
Notes Payable | Equipment Notes Payable, 5.6% to 6.8% Due March 2023 Through May 2025 | Maximum
Debt Instrument [Line Items]
Monthly installments	$ 39,000
Interest rate	6.80%
Notes Payable | Equipment Notes Payable, 3.9% to 6.4% Due April 2024 Through December 2024
Debt Instrument [Line Items]
Total	$ 1,973,000	2,633,000
Equipment net book value	1,603,000
Notes Payable | Equipment Notes Payable, 3.9% to 6.4% Due April 2024 Through December 2024 | Minimum
Debt Instrument [Line Items]
Monthly installments	$ 2,000
Interest rate	3.90%
Notes Payable | Equipment Notes Payable, 3.9% to 6.4% Due April 2024 Through December 2024 | Maximum
Debt Instrument [Line Items]
Monthly installments	$ 23,000
Interest rate	6.40%
Notes Payable | Equipment Notes Payable, 5.4 % Due August 2025
Debt Instrument [Line Items]
Total	$ 1,320,000	1,624,000
Interest rate	5.40%
Equipment net book value	$ 1,410,000
Notes Payable | Equipment Notes Payable, 5.4 % Due August 2025 | Minimum
Debt Instrument [Line Items]
Monthly installments	9,000
Notes Payable | Equipment Notes Payable, 5.4 % Due August 2025 | Maximum
Debt Instrument [Line Items]
Monthly installments	10,000
Notes Payable | Equipment Notes Payable Due 2022 Through April 2023
Debt Instrument [Line Items]
Total	3,991,000	0
Monthly installments	68,000
Equipment net book value	3,991,000
Term Loan | Equipment Notes Payable 4.0% to 6.5% Percent Due February 2026 through August 2026
Debt Instrument [Line Items]
Total	1,580,000	1,861,000
Equipment net book value	1,749,000
Term Loan | Equipment Notes Payable 4.0% to 6.5% Percent Due February 2026 through August 2026 | Minimum
Debt Instrument [Line Items]
Monthly installments	$ 3,000
Interest rate	4%
Term Loan | Equipment Notes Payable 4.0% to 6.5% Percent Due February 2026 through August 2026 | Maximum
Debt Instrument [Line Items]
Monthly installments	$ 9,000
Interest rate	6.50%
Line of Credit | Equipment Notes Payable 3.0 % to 3.9 Percent Due October 2021 through April 2022
Debt Instrument [Line Items]
Total	$ 0	467,000
Line of Credit | Equipment Notes Payable 3.0 % to 3.9 Percent Due October 2021 through April 2022 | Minimum
Debt Instrument [Line Items]
Monthly installments		$ 24,000
Interest rate		3%
Line of Credit | Equipment Notes Payable 3.0 % to 3.9 Percent Due October 2021 through April 2022 | Maximum
Debt Instrument [Line Items]
Monthly installments		$ 117,000
Interest rate		0.039%
Line of Credit | Commercial Insurance Premium Financing Agreement 4.2 % to 5.3% Due November 2022
Debt Instrument [Line Items]
Total	1,300,000	$ 0
Line of Credit | Commercial Insurance Premium Financing Agreement 4.2 % to 5.3% Due November 2022 | Minimum
Debt Instrument [Line Items]
Monthly installments	$ 19,000
Interest rate	4.20%
Line of Credit | Commercial Insurance Premium Financing Agreement 4.2 % to 5.3% Due November 2022 | Maximum
Debt Instrument [Line Items]
Monthly installments	$ 143,000
Interest rate	5.30%
Line of Credit | 4.5% Equipment Line Of Credit
Debt Instrument [Line Items]
Total	$ 1,541,000	3,387,000
Long-term debt	$ 1,012,000
Interest rate	4.50%
Initial commitment	$ 10,000,000
Senior Notes | 8.50% Senior Notes due 2026
Debt Instrument [Line Items]
Total	$ 135,000,000	$ 135,000,000
Less debt issuance costs, net				$ (12,116,000)
Interest rate	8.50%		8.50%	8.50%

Mezzanine Equity (Details)

Mezzanine Equity (Details) $ / shares in Units, shares in Thousands	1 Months Ended	9 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) trading_day $ / shares shares	Dec. 31, 2021 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Mar. 04, 2020 $ / shares
Temporary Equity [Line Items]
Series A preferred stock, par value (in dollars per share) | $ / shares		$ 0.01	$ 0.01
Series A preferred stock dividends payable included in accrued expenses		$ 956,000		$ 1,946,000
Accrued preferred stock dividends		$ 957,000	$ 1,994,000
Liquidation preference (in dollars per share) | $ / shares		$ 1,000
Dividend in cash, liquidation preference percentage		10%
Dividend other than cash, liquidation preference percentage		13%
Dividend other than cash, liquidation preference percentage, upon default		16%
Series A preferred stock, aggregate liquidation preference		$ 36,006,000	32,712,000
Conversion price (in dollars per share) | $ / shares					$ 2.77
Weighted average price percentage of preferred stock					30%
Common stock issuable if preferred stock is converted (in shares) | shares		12,999
Threshold trading days | trading_day		30
Threshold consecutive trading days | trading_day		20
Conversion price, percentage		120%
Conversion price, upon change of control		100%
Dividend discount spread on treasury rate		0.50%
Make whole payment, maximum		$ 4,000,000
Conversion price, upon early redemption		103%
Series A Preferred Stock
Temporary Equity [Line Items]
Debt instrument, convertible, conversion term		3 years
Series A Preferred Stock | Period 1
Temporary Equity [Line Items]
Debt instrument, convertible, conversion term		3 years
Series A Preferred Stock | Period 2
Temporary Equity [Line Items]
Debt instrument, convertible, conversion term		7 years
Amendment No. 3 to Credit Agreement | Series A Preferred Stock
Temporary Equity [Line Items]
Issuance of series A preferred stock, net of issuance costs (in shares) | shares	26
Series A preferred stock, par value (in dollars per share) | $ / shares	$ 0.01
Original issue discount, rate	3%
Amendment No. 3 to Credit Agreement | Series A Preferred Stock | Private Placement
Temporary Equity [Line Items]
Proceeds from issuance, net of discount	$ 26,000,000
Original issue discount, amount	780,000
Proceeds from private placement	25,220,000
Payments of stock issuance costs	$ 966,000
Series A preferred stock dividends payable included in accrued expenses		$ 1,133,000	$ 1,030,000

Contract Assets and Liabiliti_3

Contract Assets and Liabilities - Schedule of Asset and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract]
Costs and estimated earnings in excess of billings	$ 17,555	$ 17,555	$ 17,163
Retainage	9,438	9,438	9,681
Total contract assets	26,993	26,993	26,844
Contract with Customer, Liability [Abstract]
Billings in excess of costs and estimated earnings	4,053	4,053	5,716
Deferred revenue	1,585	1,585	483
Total contract liabilities	5,638	5,638	$ 6,199
Revenue recognized	$ 57	$ 5,886

Contract Assets and Liabiliti_4

Contract Assets and Liabilities - Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Costs incurred on uncompleted contracts	$ 245,077	$ 227,195
Estimated earnings	15,360	22,331
Total costs and estimated earnings	260,437	249,526
Less billings to date	(246,935)	(238,079)
Net balance in process	$ 13,502	$ 11,447

Contract Assets and Liabiliti_5

Contract Assets and Liabilities - Balance Sheet Classification (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Costs and estimated earnings in excess of billings	$ 17,555	$ 17,163
Billings in excess of costs and estimated earnings	(4,053)	(5,716)
Net balance in process	13,502	11,447
Long-term contracts, loss accrual	$ 2	$ 159

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Common Stock | 2018 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be issued (in units)	5,007		5,007
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 664	$ 550	$ 1,813	$ 1,308
Unrecognized compensation cost	2,943		$ 2,943
Compensation cost not yet recognized, period for recognition			1 year 4 months 6 days
Fair value of awards vested during period	0		$ 2,018
Performance Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	169	$ 219	559	$ 459
Unrecognized compensation cost	$ 1,200		$ 1,200
Compensation cost not yet recognized, period for recognition			2 years 7 days

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Shares
Beginning balance (in shares)	1,533
Granted (in shares)	1,042
Forfeited (in shares)	(238)
Vested (in shares)	(480)
Ending balance (in shares)	1,857	1,533
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 4.46
Granted (in dollars per share)	3.76
Forfeited (in dollars per share)	6.05
Vested (in dollars per share)	4.73
Ending balance (in dollars per share)	$ 3.79	$ 4.46
Weighted Average Remaining Contractual Terms (Years)	1 year 4 months 9 days	1 year 14 days
Aggregate Intrinsic Value	$ 3,399	$ 7,051
Restricted Stock
Shares
Beginning balance (in shares)	885
Granted (in shares)	729
Forfeited (in shares)	(7)
Vested (in shares)	(480)
Ending balance (in shares)	1,127	885
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 4.62
Granted (in dollars per share)	4.10
Forfeited (in dollars per share)	3.21
Vested (in dollars per share)	4.73
Ending balance (in dollars per share)	$ 4.24	$ 4.62
Weighted Average Remaining Contractual Terms (Years)	1 year 1 month 24 days	10 months 17 days
Aggregate Intrinsic Value	$ 2,063	$ 4,072
Performance Stock
Shares
Beginning balance (in shares)	648
Granted (in shares)	313
Forfeited (in shares)	(231)
Vested (in shares)	0
Ending balance (in shares)	730	648
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 4.24
Granted (in dollars per share)	2.97
Forfeited (in dollars per share)	6.14
Vested (in dollars per share)	0
Ending balance (in dollars per share)	$ 3.11	$ 4.24
Weighted Average Remaining Contractual Terms (Years)	1 year 8 months 4 days	1 year 3 months 3 days
Aggregate Intrinsic Value	$ 1,336	$ 2,979

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (77)	$ 203	$ 342	$ 432
Effective tax rate			(1.00%)
Change in deferred tax assets valuation allowance, percent			24.80%
Estimated state statutory rate			4.30%
Deferred tax liabilities	$ 1,259		$ 1,259		$ 949

Loss Per Share - Calculation of

Loss Per Share - Calculation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss attributable to Charah Solutions, Inc.	$ (13,359)	$ (1,677)	$ (35,002)	$ (7,130)
Deemed and imputed dividends on Series A Preferred Stock	(150)	(148)	(449)	(443)
Series A Preferred Stock dividends	(956)	(1,946)	(4,617)	(6,161)
Net loss attributable to common stockholders	(14,465)	(3,771)	(40,068)	(13,734)
Net loss attributable to common stockholders	$ (14,465)	$ (3,771)	$ (40,068)	$ (13,734)
Denominator:
Weighted-average shares outstanding (in shares)	33,722	32,277	33,592	30,955
Dilutive share-based awards (in shares)	0	0	0	0
Total weighted average shares outstanding, including dilutive shares (in shares)	33,722	32,277	33,592	30,955
Net loss attributable to common stockholders per common share
Basic (in dollars per share)	$ (0.43)	$ (0.12)	$ (1.19)	$ (0.44)
Diluted (in dollars per share)	$ (0.43)	$ (0.12)	$ (1.19)	$ (0.44)

Loss Per Share - Antidilutive S

Loss Per Share - Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive restricted and performance stock units (in shares)	14,640	12,379	13,976	12,064
Anti-dilutive restricted and performance stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive restricted and performance stock units (in shares)	2,046	1,298	1,772	1,325
Anti-dilutive Series A Preferred Stock convertible into common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive restricted and performance stock units (in shares)	12,594	11,081	12,204	10,739

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 14, 2022	Sep. 30, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Real estate, property and equipment, net		$ 106,079	$ 70,473
Subsidiaries
Subsequent Event [Line Items]
Real estate, property and equipment, net		$ 12,077
Subsequent Event
Subsequent Event [Line Items]
Stock issued during period, stock split (in shares)	0.1
Series B Preferred Stock | Subsequent Event
Subsequent Event [Line Items]
Number of shares to be issued in transaction (in shares)	30,000
Preferred stock par value (in dollars per share)	$ 0.01
Preferred stock liquidation preference value	$ 30,000
Preferred stock, discount percentage	4%
Preferred stock, discount proceeds	$ 1,200
Issuance of the preferred stock	$ 28,800
Preferred stock, threshold period for conversion	3 months
Preferred stock, number of trading days for conversion price	20 days
Preferred stock, threshold period for company option to convert	3 years
Preferred stock, threshold percentage of stock price trigger	120%
Preferred stock, consecutive trading days	20 days
Preferred stock, intent to convert notice period	30 days
Preferred stock, period after which company may be required to redeem for cash	30 months
Preferred stock, maximum voting power as percentage of outstanding common stock	5%