OPERATING SEGMENTS (Tables)

9 Months Ended

Sep. 30, 2017

OPERATING SEGMENTS

Summary of financial information of our reportable segments

	Three Months Ended September 30, 2017
			Field &
	Environmental		Industrial
$s in thousands	Services		Services		Corporate		Total
Treatment & Disposal Revenue	$	77,071	$	2,595	$	—	$	79,666
Services Revenue:
Transportation and Logistics (1)		20,590		4,955		—		25,545
Industrial Cleaning (2)		—		4,328		—		4,328
Technical Services (3)		—		20,314		—		20,314
Remediation (4)		—		2,672		—		2,672
Other (5)		—		1,529		—		1,529
Total Revenue	$	97,661	$	36,393	$	—	$	134,054
Depreciation, amortization and accretion	$	9,342	$	1,316	$	118	$	10,776
Capital expenditures	$	7,594	$	561	$	647	$	8,802
Total assets	$	619,156	$	124,053	$	59,442	$	802,651

	Three Months Ended September 30, 2016
			Field &
	Environmental		Industrial
$s in thousands	Services		Services		Corporate		Total
Treatment & Disposal Revenue	$	70,719	$	3,737	$	—	$	74,456
Services Revenue:
Transportation and Logistics (1)		17,066		4,073		—		21,139
Industrial Cleaning (2)		—		5,025		—		5,025
Technical Services (3)		—		20,364		—		20,364
Remediation (4)		—		3,326		—		3,326
Other (5)		—		514		—		514
Total Revenue	$	87,785	$	37,039	$	—	$	124,824
Depreciation, amortization and accretion	$	8,665	$	1,356	$	115	$	10,136
Capital expenditures	$	1,960	$	450	$	546	$	2,956
Total assets	$	589,841	$	124,351	$	59,118	$	773,310

	Nine Months Ended September 30, 2017
			Field &
	Environmental		Industrial
$s in thousands	Services		Services		Corporate		Total
Treatment & Disposal Revenue	$	217,012	$	8,133	$	—	$	225,145
Services Revenue:
Transportation and Logistics (1)		51,543		15,218		—		66,761
Industrial Cleaning (2)		—		13,252		—		13,252
Technical Services (3)		—		55,778		—		55,778
Remediation (4)		—		6,495		—		6,495
Other (5)		—		2,914		—		2,914
Total Revenue	$	268,555	$	101,790	$	—	$	370,345
Depreciation, amortization and accretion	$	27,238	$	4,225	$	375	$	31,838
Capital expenditures	$	21,204	$	2,900	$	2,250	$	26,354
Total assets	$	619,156	$	124,053	$	59,442	$	802,651

	Nine Months Ended September 30, 2016
			Field &
	Environmental		Industrial
$s in thousands	Services		Services		Corporate		Total
Treatment & Disposal Revenue	$	204,352	$	9,386	$	—	$	213,738
Services Revenue:
Transportation and Logistics (1)		47,754		14,416		—		62,170
Industrial Cleaning (2)		—		16,497		—		16,497
Technical Services (3)		—		57,136		—		57,136
Remediation (4)		—		8,816		—		8,816
Other (5)		—		2,136		—		2,136
Total Revenue	$	252,106	$	108,387	$	—	$	360,493
Depreciation, amortization and accretion	$	25,117	$	4,070	$	362	$	29,549
Capital expenditures	$	18,309	$	1,883	$	2,358	$	22,550
Total assets	$	589,841	$	124,351	$	59,118	$	773,310

(1) Includes such services as collection, transportation and disposal of non-hazardous and hazardous waste.

(2) Includes such services as industrial cleaning and maintenance for refineries, chemical plants, steel and automotive plants, and refinery services such as tank cleaning and temporary storage.

(3) Includes such services as Total Waste Management ("TWM") programs, retail services, laboratory packing, less-than-truck-load (“LTL”) service and Household Hazardous Waste ("HHW") collection.

(4) Includes such services as site assessment, onsite treatment, project management and remedial action planning and execution.

(5) Includes such services as emergency response and marine.

Reconciliation of Net Income to Adjusted EBITDA and adjusted EBITDA by operating segment

	Three Months Ended September 30,				Nine Months Ended September 30,
$s in thousands	2017		2016		2017		2016
Net income	$	8,365	$	10,114	$	18,599	$	26,569
Income tax expense		4,668		6,278		10,465		16,828
Interest expense		2,783		4,288		15,387		13,150
Interest income		(18)		(8)		(49)		(90)
Foreign currency (gain) loss		(275)		224		(521)		(192)
Other (income) expense		(234)		19		(537)		(2,480)
Depreciation and amortization of plant and equipment		7,386		6,454		21,007		18,561
Amortization of intangibles		2,300		2,651		7,586		7,907
Stock-based compensation		995		605		2,954		2,182
Accretion and non-cash adjustment of closure & post-closure liabilities		1,090		1,031		3,245		3,081
Adjusted EBITDA	$	27,060	$	31,656	$	78,136	$	85,516

	Three Months Ended September 30,				Nine Months Ended September 30,
$s in thousands	2017		2016		2017		2016
Adjusted EBITDA:
Environmental Services	$	35,524	$	37,747	$	102,022	$	104,352
Field & Industrial Services		3,646		4,466		9,829		13,267
Corporate		(12,110)		(10,557)		(33,715)		(32,103)
Total	$	27,060	$	31,656	$	78,136	$	85,516

Summary of revenues by geographic location

	Three Months Ended September 30,				Nine Months Ended September 30,
$s in thousands	2017		2016		2017		2016
United States	$	112,821	$	111,005	$	319,776	$	325,379
Canada		21,233		13,819		50,569		35,114
Total revenue	$	134,054	$	124,824	$	370,345	$	360,493

Schedule of long-lived assets by geographic location

	September 30,		December 31,
$s in thousands	2017		2016
United States	$	400,269	$	405,767
Canada		59,341		54,826
Total long-lived assets	$	459,610	$	460,593