Segment Reporting as of and for the year ended December 31, 2025

	Treatment			Services			Segments Total			Corporate ⁽¹⁾			Consolidated Total
Revenue from external customers	$	45,097		$	16,577		$	61,674	(4)(5)	$	—		$	61,674
Cost of goods sold:
Payroll and benefit expenses		18,810			8,516			27,326			—			27,326
Material and supplies expenses		6,965			—			6,965			—			6,965
Disposal expenses		3,195			—			3,195			—			3,195
Transportation expenses		1,488			—			1,488			—			1,488
Subcontract expenses		—			1,256			1,256			—			1,256
Other cost of goods sold ⁽²⁾		9,845			5,626			15,471			—			15,471
Total cost of goods sold		40,303			15,398			55,701			—			55,701
Gross profit		4,794			1,179			5,973			—			5,973
Selling, general and administrative expenses (“SG&A”):
Payroll and benefits		3,571			2,355			5,926			3,854			9,780
Other SG&A ⁽³⁾		1,697			861			2,558			4,078			6,636
Total SG&A		5,268			3,216			8,484			7,932			16,416
Research and development		969			30			999			292			1,291
Loss (gain) on disposal of property and equipment		6			(5	)		1			—			1
Loss from operations	$	(1,449	)	$	(2,062	)	$	(3,511	)	$	(8,224	)		(11,735	)
Interest income														1,123
Interest expense														(230	)
Interest expense-financing fees														(84	)
Other expense														261
Loss from continuing operations before taxes														(10,665	)
Income tax expense														—
Loss from continuing operations, net of taxes													$	(10,665	)

Segment Reporting as of and for the year ended December 31, 2024

	Treatment			Services			Segments Total			Corporate ⁽¹⁾			Consolidated Total
Revenue from external customers	$	34,953		$	24,164			$ 59,117	(4)(5)	$	—		$	59,117
Cost of Goods Sold:
Payroll and benefits expenses		16,257			9,494			25,751			—			25,751
Material and supplies expenses		4,074			—			4,074			—			4,074
Disposal expenses		5,317			—			5,317			—			5,317
Transportation expenses		1,118			—			1,118			—			1,118
Subcontract expenses		—			7,152			7,152			—			7,152
Other cost of goods sold ⁽²⁾		9,297			6,406			15,703			—			15,703
Total cost of goods sold		36,063			23,052			59,115			—			59,115
Gross (loss) profit		(1,110	)		1,112			2			—			2
SG&A:
Payroll and benefits		2,858			2,413			5,271			3,296			8,567
Other SG&A ⁽³⁾		1,432			892			2,324			3,600			5,924
Total SG&A		4,290			3,305			7,595			6,896			14,491
Research and development		842			111			953			219			1,172
Loss on disposal of property and equipment		18			3			21			—			21
Loss from operations	$	(6,260	)	$	(2,307	)	$	(8,567	)	$	(7,115	)		(15,682	)
Interest income														921
Interest expense														(473	)
Interest expense-financing fees														(66	)
Other income														166
Loss from continuing operations before taxes														(15,134	)
Income tax expense														4,435
Loss from continuing operations, net of taxes													$	(19,569	)

⁽¹⁾	Amounts reflect the activity for corporate headquarters not included in the segment reporting information.

⁽²⁾	Other cost of goods sold for each reportable segment includes:
	Treatment - lab, regulatory, maintenance, depreciation and amortization, travel, outside services and general expenses.
	Services - material and supplies, disposal and transportation, lab, regulatory, maintenance, depreciation and amortization, travel, outside services and general expenses.

⁽³⁾	Other SG&A for each reportable segment and Corporate includes:
	Treatment-depreciation and amortization, travel, outside services, maintenance and general expenses.
	Services- travel, outside services, maintenance and general expenses.
	Corporate-maintenance, depreciation and amortization, travel, outside services/public company and general expenses.

⁽⁴⁾	Revenue derived from federal government entities, either directly as a prime contractor or indirectly for others as a subcontractor to federal government entities, was approximately $39,243,000 or 63.6% of total revenue for 2025 and $40,550,000 or 68.6% of total revenue for 2024.

⁽⁵⁾

The following table reflects revenue based on customer location (in thousands):

The following table presents depreciation and amortization for the years ended December 31, (in thousands):

	2025		2024
Treatment	$	1,582	$	1,484
Services		133		177
Total segment		1,715		1,661
Corporate		44		102
Total	$	1,759	$	1,763
Depreciation and amortization	$	1,759	$	1,763

The following table presents long-lived assets for the Company’s continuing operations for the years ended December 31, (in thousands):