ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Tables)

12 Months Ended

Dec. 31, 2015

Environmental Liabilities and Expenditures

Environmental loss contingencies by categories of sites

($ amounts in millions)	2015			2014			2013
	Number of Sites	Reserve Balance		Number of Sites	Reserve Balance		Number of Sites	Reserve Balance
NPL sites	34	$	27	30	$	23	31	$	25
Third-party sites	66	128		67	101		74	83
Occidental-operated sites	18	107		17	107		20	118
Closed or non-operated Occidental sites	31	124		31	103		32	104
Total	149	$	386	145	$	334	157	$	330

Environmental reserve activity

(in millions)	2015			2014			2013
Balance — Beginning of Year	$	334		$	330		$	344
Remediation expenses and interest accretion	117			79			60
Spin-off of California Resources	—			(7		)	—
Payments	(65		)	(68		)	(74		)
Balance — End of Year	$	386		$	334		$	330

Environmental cost for each segment

(in millions)	2015		2014		2013
Operating Expenses
Oil and Gas	$	93	$	103	$	100
Chemical	74		80		75
Midstream and Marketing	13		11		13
	$	180	$	194	$	188
Capital Expenditures
Oil and Gas	$	122	$	143	$	67
Chemical	41		35		14
Midstream and Marketing	4		11		5
	$	167	$	189	$	86
Remediation Expenses
Corporate	$	117	$	79	$	60