REVENUES (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

The following table presents our revenues disaggregated by revenue source:

	Year ended December 31, 2018
	Black Oil		Refining & Marketing		Recovery		Total
Primary Geographical Markets
Northern United States	$	41,207,747	$	—	$	—	$	41,207,747
Southern United States	102,629,234		22,935,482		13,948,198		139,512,914
	$	143,836,981	$	22,935,482	$	13,948,198	$	180,720,661
Sources of Revenue
Petroleum products	$	143,836,981	$	22,935,482	$	1,960,915	$	168,733,378
Metals	—		—		11,987,283		11,987,283
Total revenues	$	143,836,981	$	22,935,482	$	13,948,198	$	180,720,661

	Year ended December 31, 2017
	Black Oil		Refining & Marketing		Recovery		Total
Primary Geographical Markets
Northern United States	$	31,242,068	$	—	$	—	$	31,242,068
Southern United States	76,746,483		20,097,325		17,413,216		114,257,024
	$	107,988,551	$	20,097,325	$	17,413,216	$	145,499,092
Sources of Revenue
Petroleum products	$	107,988,551	$	20,097,325	$	10,070,746	$	138,156,622
Metals	—		—		7,342,470		7,342,470
Total revenues	$	107,988,551	$	20,097,325	$	17,413,216	$	145,499,092