Clean Harbors (CLH) 8-K 2012 Unaudited Recast Segment Information by Quarter and Full Year

EXHIBIT 99.1

2012 Unaudited Recast Segment Information by Quarter and Full Year

The table below presents reportable segment results as recast (unaudited, in thousands):

	Summary of Operations (in thousands)
	For the Three Months Ended												For the Year Ended
	March 31, 2012			June 30, 2012			September 30, 2012			December 31, 2012			December 31, 2012
Third Party Revenues:
Technical Services	$	221,637		$	243,321		$	247,355		$	245,451		$	957,764
Industrial and Field Services	202,779			202,618			203,371			219,351			828,119
Oil and Gas Field Services	146,905			76,849			82,812			93,983			400,549
Corporate Items	701			330			268			177			1,476
Total	$	572,022		$	523,118		$	533,806		$	558,962		$	2,187,908
Direct Revenues:
Technical Services	$	231,196		$	252,186		$	254,971		$	253,343		$	991,696
Industrial and Field Services	191,570			191,406			194,594			209,683			787,253
Oil and Gas Field Services	148,828			79,718			84,640			96,167			409,353
Corporate Items	428			(192		)	(399		)	(231		)	(394		)
Total	572,022			523,118			533,806			558,962			2,187,908
Cost of Revenues (exclusive of items shown separately) (1):
Technical Services	156,412			163,706			169,484			170,387			659,989
Industrial and Field Services	142,566			136,341			138,105			152,253			569,265
Oil and Gas Field Services	99,669			64,254			63,725			74,051			301,699
Corporate Items	1,668			3,322			1,626			3,052			9,668
Total	400,315			367,623			372,940			399,743			1,540,621
Selling, General and Administrative Expenses:
Technical Services	22,873			19,959			17,246			21,800			81,878
Industrial and Field Services	14,926			14,507			13,211			16,413			59,057
Oil and Gas Field Services	8,963			7,493			6,783			7,367			30,606
Corporate Items	23,997			24,835			23,099			30,048			101,979
Total	70,759			66,794			60,339			75,628			273,520
Adjusted EBITDA (2):
Technical Services	51,911			68,521			68,241			61,156			249,829
Industrial and Field Services	34,078			40,558			43,278			41,017			158,931
Oil and Gas Field Services	40,196			7,971			14,132			14,749			77,048
Corporate Items	(25,237		)	(28,349		)	(25,124		)	(33,331		)	(112,041		)
Total	$	100,948		$	88,701		$	100,527		$	83,591		$	373,767

(1)Items shown separately consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.

(2)The following is a reconciliation of net income to Adjusted EBITDA (unaudited, in thousands):

	For the Three Months Ended									For the Year Ended
	March 31, 2012		June 30, 2012		September 30, 2012		December 31, 2012			December 31, 2012
Net income	$	32,015	$	23,426	$	12,359	$	61,874		$	129,674
Accretion of environmental liabilities	2,416		2,505		2,488		2,508			9,917
Depreciation and amortization	36,831		38,663		41,300		44,852			161,646
Other expense	299		75		91		337			802
Loss on early extinguishment of debt	—		—		26,385		—			26,385
Interest expense, net	11,272		10,968		11,596		13,451			47,287
Provision (benefit) for income taxes	18,115		13,064		6,308		(39,431		)	(1,944		)
Adjusted EBITDA	$	100,948	$	88,701	$	100,527	$	83,591		$	373,767