Murphys Waste Oil Service S-4 Registration of securities issued in business combination transactions

EXHIBIT 12.1

Ratio of Earnings to Fixed Charges

CLEAN HARBORS, INC.

Offer to Exchange 75/8% Senior Secured Notes due 2016

Registered under the Securities Act of 1933 for

All Outstanding Unregistered 75/8% Senior Secured Notes due 2016

	For the Six Months Ended June 30,						For the Year Ended December 31,
	2009			2008			2008			2007			2006			2005			2004
	(Dollars in thousands)
Income from operations before income taxes	$	24,198		$	43,902		$	93,977		$	72,238		$	52,953		$	29,116		$	8,643
Add (Subtract):
Capitalized interest	(110		)	(287		)	(157		)	(1,179		)	(682		)	(91		)	(1,922		)
Amortization of capitalized interest	282			277			541			435			294			246			24
Fixed charges (see calculation below)	5,981			9,609			18,736			22,897			20,259			26,803			31,985
Income from operations before income taxes as adjusted	$	30,351		$	53,508		$	113,098		$	94,391		$	72,824		$	56,074		$	38,730
Fixed charges:
Interest expense, net	$	2,989		$	5,900		$	8,403		$	13,157		$	12,447		$	22,754		$	22,297
Interest income	623			1,431			623			4,023			3,589			1,403			692
Capitalized interest	110			287			157			1,179			682			91			1,922
Amortization of capitalized interest	(282		)	(270		)	(541		)	(435		)	(294		)	(246		)	(24		)
Preferred stock dividend	—			—			—			332			314			317			5,684
Portion of operating lease rental expenses deemed to be representative of the interest factor	2,541			2,275			5,624			4,641			3,521			2,484			1,414
Fixed charges	$	5,981		$	9,609		$	18,736		$	22,897		$	20,259		$	26,803		$	31,985
Ratio of earnings to fixed charges	5.1x			5.6x			6.0x			4.1x			3.6x			2.1x			1.2x