Facility detail

BLACK HILLS CORP - OSAG E POWER PLANT

3363 HWY 16, OSAGE, WY, 82723

Parent company: BLACK HILLS CORP

PBT — EPA classifications across all reporting years

Year-over-year total releases

Reported on-site TRI releases in pounds, grouped by reporting year.

The 10 chemicals with the highest cumulative on-site releases across all available years.

Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.

Year	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	Hydrogen fluoride	Chlorine	Lead compounds	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Total
2010	46,935	—	—	1,038	—	47,989
2009	81,187	—	—	1,794	—	83,008
2008	77,305	—	10	1,708	—	79,052
2007	78,725	—	14	1,740	—	80,509
2006	83,581	—	14	1,848	—	85,472
2005	79,646	—	14	1,761	—	81,452
2004	77,701	—	12	1,718	—	79,461
2003	81,061	—	14	1,791	—	82,891
2002	80,166	—	13	1,772	—	81,975
2001	83,963	—	12	2,075	—	86,075
2000	83,291	—	11	—	—	83,327
1999	73,603	26,871	13,652	—	5,123	119,249
1998	131,525	33,110	13,787	—	10,200	188,622