SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2012

Consolidated Quarterly Results of Operations

The following table summarizes the unaudited consolidated quarterly results of operations for 2012:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	376,430	$	410,731	$	425,654	$	448,803
Operating income		65,056		81,737		89,147		80,206
Net income		31,439		42,515		49,620		36,086
Net income attributable to Waste Connections		31,303		42,415		49,385		35,989
Basic income per common share attributable to Waste Connections’ common stockholders		0.27		0.34		0.40		0.29
Diluted income per common share attributable to Waste Connections’ common stockholders		0.27		0.34		0.40		0.29

The following table summarizes the unaudited consolidated quarterly results of operations for 2011:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	331,468	$	390,184	$	403,962	$	379,752
Operating income		68,575		84,798		89,314		74,374
Net income		36,793		44,605		46,584		38,189
Net income attributable to Waste Connections		36,539		44,413		46,329		37,958
Basic income per common share attributable to Waste Connections’ common stockholders		0.32		0.39		0.41		0.34
Diluted income per common share attributable to Waste Connections’ common stockholders		0.32		0.39		0.41		0.34