Facility detail

US STEEL CORP MIDWEST PLANT

6300 US HWY 12, PORTAGE, IN, 46368

Parent company: US STEEL CORP

Carcinogen PBT — EPA classifications across all reporting years

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Year-over-year total releases

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

Top chemical totals

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

Full release table

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

Year	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Aluminum oxide (fibrous forms)	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Chromium compounds (except for chromite ore mined in the Transvaal Region)	Zinc compounds	Total
2024	—	—	5,612	2,191	1,589	25,959
2023	—	—	4,412	1,975	1,462	22,982
2022	—	—	—	2,083	1,554	19,194
2021	—	—	—	2,437	1,757	16,976
2020	—	—	—	178	190	3,786
2019	—	—	—	267	168	612
2018	—	—	4,415	265	179	5,007
2017	—	—	4,224	30,615	6,828	44,911
2016	—	—	5,613	34,184	7,943	51,545
2015	—	—	23,018	34,147	7,948	68,725
2014	—	—	24,018	25,449	5,859	77,262
2013	—	—	6,203	33,449	—	59,133
2012	—	—	6,603	33,418	7,649	70,196
2011	—	—	6,703	32,248	11,570	273,686
2010	—	—	11,003	110,348	12,360	532,214
2009	—	—	7,103	110,827	8,410	207,918
2008	—	—	—	140,384	10,660	247,584
2007	—	—	—	110,785	8,800	220,111
2006	—	—	—	110,604	9,070	240,159
2005	570	—	11,800	125,825	9,600	248,417
2004	1,400	—	12,700	131,118	11,350	247,095
2003	1,900	—	14,400	162,415	12,799	285,501
2002	—	—	15,700	160,004	13,500	212,404
2001	—	—	16,400	140,905	11,970	189,275
2000	2,340	—	13,923	55,309	37,046	127,618
1999	1,925	—	12,398	104,003	85,950	204,276
1998	1,900	—	12,200	118,400	99,500	232,000
1997	2,100	—	12,400	106,000	87,000	207,502
1996	2,100	—	12,327	170,500	139,300	324,235
1995	2,100	—	12,570	108,300	90,800	227,783
1994	—	—	2,599,800	115,960	95,900	2,827,765
1993	2,100	—	4,609,700	123,200	73,000	4,808,000
1992	2,100	—	1,921,935	142,800	79,100	2,154,135
1991	2,050	—	609,300	68,800	—	700,450
1990	2,200	—	1,518,200	89,300	—	1,705,400
1989	23,409,762	—	95,962	1,022,063	—	24,717,190
1988	27,168,409	26,289,199	—	1,436,963	1,836	55,099,263
1987	—	—	—	—	44,156	44,156