QUARTERLY DATA (UNAUDITED)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]



	First Quarter			Second Quarter			Third Quarter (1)			Fourth Quarter (1)
	(in thousands except per share amounts)
2012
Revenues	$	572,022		$	523,118		$	533,806		$	558,962
Cost of revenues (2)	400,315			367,623			372,940			399,743
Gross profit	171,707			155,495			160,866			159,219
Income from operations	61,701			47,533			56,739			36,231
Other expense	(299		)	(75		)	(91		)	(337		)
Net income	32,015			23,426			12,359			61,874
Basic earnings per share	0.60			0.44			0.23			1.11
Diluted earnings per share	0.60			0.44			0.23			1.11



	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands except per share amounts)
2011
Revenues	$	434,962	$	447,235	$	556,053	$	545,886
Cost of revenues (1)	312,577		307,754		386,518		373,142
Gross profit	122,385		139,481		169,535		172,744
Income from operations	39,742		51,884		66,792		59,247
Other income	2,899		2,868		164		471
Net income	22,730		29,156		37,133		38,233
Basic earnings per share	0.43		0.55		0.70		0.72
Diluted earnings per share	0.43		0.55		0.70		0.72

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(1)

The third quarter net income and earnings per share were impacted by a $26.4 million loss on early extinguishment of debt in connection with a redemption and repurchase of our $520.0 million previously outstanding senior secured notes. The fourth quarter 2012 net income and earnings per share were impacted by a decrease in unrecognized tax benefits of $52.4 million resulting from expiring statute of limitation periods related to an historical Canadian debt restructuring transaction.


(2)	Items shown separately on the statements of income consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.

Earnings per share are computed independently for each of the quarters presented. Accordingly, the quarterly basic and diluted earnings per share may not equal the total computed for the year.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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