PROPERTY, PLANT AND EQUIPMENT (Tables)

3 Months Ended

Mar. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

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

	March 31, 2016		December 31, 2015
Land	$	101,460	$	100,582
Asset retirement costs (non-landfill)	12,188		12,434
Landfill assets	140,792		136,624
Buildings and improvements	353,869		344,209
Camp equipment	158,619		149,361
Vehicles	529,386		500,619
Equipment	1,400,407		1,328,915
Furniture and fixtures	5,477		5,337
Construction in progress	131,894		113,657
	2,834,092		2,691,738
Less - accumulated depreciation and amortization	1,237,220		1,159,271
Total property, plant and equipment, net	$	1,596,872	$	1,532,467