PROPERTY, PLANT AND EQUIPMENT (Tables)

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consisted of the following (in thousands):

	June 30, 2015		December 31, 2014
Land	$	99,929	$	98,507
Asset retirement costs (non-landfill)	12,498		10,871
Landfill assets	121,054		110,984
Buildings and improvements	344,059		338,242
Camp equipment	166,210		180,575
Vehicles	499,921		471,615
Equipment	1,316,034		1,302,424
Furniture and fixtures	5,412		5,517
Construction in progress	81,843		45,605
	2,646,960		2,564,340
Less - accumulated depreciation and amortization	1,084,706		1,005,506
Total property, plant and equipment, net	$	1,562,254	$	1,558,834