PROPERTY, PLANT AND EQUIPMENT

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Property, plant and equipment, at carrying value, is as follows:



	June 30,			December 31,
	2020			2019

	(In thousands)
Gathering, processing and transmission systems and facilities	$	210,738		$	198,133
Construction in progress⁽¹⁾	328			5,443
Other property and equipment	3,323			3,694
Total property, plant and equipment	214,389			207,270
Less: accumulated depreciation and amortization	(7,085		)	(1,468		)
Total property, plant and equipment, net	$	207,304		$	205,802


(1)	Included in construction in progress was capitalized interest of $0.6 million at December 31, 2019. There was no capitalized interest included in construction in progress as of June 30, 2020.

The cost of property classified as “Construction in progress” is excluded from capitalized costs being depreciated. These amounts represent property that is not yet available to be placed into productive service as of the respective balance sheet date.

Property, plant, and equipment are evaluated for potential impairment when events or changes in circumstances indicate a possible significant deterioration in future cash flows expected to be generated by an asset group. In conjunction with Apache’s decision in the fourth quarter of 2019 to materially reduce funding to Alpine High, Altus management assessed its long-lived infrastructure assets for impairment given the expected reduction to future throughput volumes. As a result of this assessment, Altus recorded impairments totaling $1.3 billion on its gathering, processing, and transmission assets in the fourth quarter of 2019. The fair values of the impaired assets were determined to be $203.6 million as of the time of the impairment and were estimated using the income approach. Altus has classified these nonrecurring fair value measurements as Level 3 in the fair value hierarchy. No impairments were recorded for the six months ended June 30, 2020 and 2019.