Facility detail

OTTER TAIL POWER CO BIG STONE PLANT

48450 144TH ST, BIG STONE CITY, SD, 57216

Parent company: OTTER TAIL CORP

Carcinogen 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))	Zinc compounds	Hydrogen fluoride	Manganese compounds	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Total
2024	349,935	—	1,920	15,183	3,130	382,613
2023	337,929	—	1,880	14,584	3,070	369,404
2022	406,954	—	2,410	17,691	3,930	459,593
2021	347,904	—	2,080	15,083	3,380	380,281
2020	298,908	—	2,150	12,884	3,500	329,334
2019	579,132	—	3,270	25,209	5,320	672,797
2018	—	—	2,840	—	4,620	601,434
2017	432,966	—	2,310	18,866	12,300	496,385
2016	679,698	—	2,300	26,845	12,300	762,729
2015	395,913	—	9,280	—	29,300	438,870
2014	431,278	—	16,800	17,274	53,200	552,222
2013	533,451	—	71,500	21,255	26,300	694,094
2012	511,643	—	71,600	20,385	26,300	669,575
2011	372,383	—	62,700	14,558	23,100	504,512
2010	381,934	8,421	78,000	15,285	29,000	544,426
2009	622,024	271,246	76,000	25,290	37,000	1,085,057
2008	632,425	261,297	86,000	25,337	41,000	1,100,766
2007	371,882	241,110	62,000	15,193	31,000	753,842
2006	530,713	531,557	76,000	22,038	47,000	1,284,919
2005	500,455	910,103	53,000	49,115	44,000	1,630,521
2004	640,684	800,129	93,000	61,132	37,000	1,759,038
2003	730,805	560,135	88,000	71,170	31,000	1,614,570
2002	762,820	930,943	82,000	74,452	37,000	2,026,488
2001	792,620	2,101,341	89,000	81,461	63,000	3,239,426
2000	422,350	1,101,102	110,000	140,652	57,000	1,918,822
1999	820,909	1,501,053	85,000	170,469	70,000	2,721,552
1998	640,900	830,771	85,000	130,449	40,000	1,789,246