FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2016

FAIR VALUE MEASUREMENTS

Schedule of financial assets and liabilities accounted for at fair value on a recurring basis

					Input
	June 30,		December 31,		Hierarchy
	2016		2015		Level
Assets:
Available-for-sale securities	$	5,911	$	975	Level 1
Liabilities:
Asset retirement obligation	$	541,161	$	528,250	Level 3

Schedule of fair value reconciliation of level 3 liabilities measured at fair value

	Asset Retirement Obligation
	2016		2015
Balance January 1	$	528,250	$	503,279
Accretion expense		6,416		6,046
Balance March 31		534,666		509,325
Accretion expense		6,495		6,186
Balance June 30	$	541,161	$	515,511