Property, Plant and Equipment (table)

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Table

A summary of the historical cost of property, plant and equipment is as follows:

thousands	Estimated Useful Life	September 30, 2013		December 31, 2012
Land	n/a	$	2,584	$	501
Gathering systems	3 to 47 years	3,610,879		2,911,572
Pipelines and equipment	15 to 45 years	119,278		91,126
Assets under construction	n/a	318,107		422,002
Other	3 to 25 years	10,541		7,191
Total property, plant and equipment		4,061,389		3,432,392
Accumulated depreciation		817,489		714,436
Net property, plant and equipment		$	3,243,900	$	2,717,956