Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
PAR MONTANA BILLINGS REFINERY
700 PAR MONTANA RD, BILLINGS, MT, 59101
Parent company: PAR PACIFIC HOLDINGS INC
Carcinogen
PBT
— EPA classifications across all reporting years
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) | Ammonia | Xylene (mixed isomers) | Toluene | n-Hexane | Total |
|---|---|---|---|---|---|---|
| 2024 | 42,000 | 8,100 | 8,128 | 8,720 | 23,110 | 156,134 |
| 2023 | 26,000 | 10,000 | 8,812 | 8,908 | 20,104 | 126,139 |
| 2022 | 35,000 | 7,400 | 8,510 | 8,607 | 18,603 | 134,536 |
| 2021 | 36,000 | 9,400 | 7,820 | 8,114 | 20,108 | 169,281 |
| 2020 | 39,000 | 6,008 | 8,214 | 8,911 | 20,007 | 139,950 |
| 2019 | 49,000 | 5,732 | 11,207 | 11,705 | 22,204 | 171,487 |
| 2018 | 54,000 | 18,700 | 23,426 | 21,525 | 26,421 | 263,385 |
| 2017 | 50,000 | 11,000 | 10,510 | 12,005 | 20,702 | 180,094 |
| 2016 | 41,000 | 12,400 | 13,207 | 13,903 | 25,101 | 177,821 |
| 2015 | 41,000 | 9,100 | 10,824 | 10,309 | 22,002 | 158,739 |
| 2014 | 45,000 | 8,700 | 12,609 | 11,604 | 22,701 | 193,208 |
| 2013 | 41,000 | 9,200 | 10,732 | 11,827 | 25,108 | 187,755 |
| 2012 | — | 7,500 | 15,663 | 16,644 | 32,015 | 189,653 |
| 2011 | 55,000 | 9,000 | 16,308 | 13,404 | 25,203 | 191,070 |
| 2010 | 150,000 | 14,500 | 5,701 | 6,000 | 22,400 | 245,784 |
| 2009 | 30,000 | 28,000 | 5,701 | 6,000 | 22,100 | 145,630 |
| 2008 | 58,000 | 21,600 | 9,501 | 9,600 | 23,800 | 180,238 |
| 2007 | 43,000 | 21,400 | 6,101 | 8,900 | 27,500 | 156,754 |
| 2006 | 95,000 | 19,300 | 8,714 | 10,102 | 26,500 | 211,910 |
| 2005 | 120,000 | 24,500 | 8,714 | 10,402 | 25,601 | 246,425 |
| 2004 | 150,000 | 23,100 | 6,711 | 9,306 | 26,102 | 266,967 |
| 2003 | 170,000 | 22,800 | 10,621 | 13,330 | 31,900 | 291,290 |
| 2002 | 200,000 | 24,500 | 9,571 | 13,241 | 28,423 | 319,376 |
| 2001 | 200,000 | 29,000 | 4,701 | 10,500 | 32,105 | 308,142 |
| 2000 | — | 27,300 | 4,960 | 11,285 | 29,100 | 113,580 |
| 1999 | — | 31,100 | 5,100 | 9,300 | 28,600 | 106,678 |
| 1998 | — | 32,800 | 14,601 | 27,000 | 30,901 | 181,747 |
| 1997 | 55,000 | 34,800 | 21,901 | 32,001 | 32,001 | 263,294 |
| 1996 | — | 34,100 | 23,801 | 34,001 | 38,001 | 226,201 |
| 1995 | — | 35,900 | 13,501 | 13,607 | 6,800 | 125,547 |
| 1994 | — | 40,400 | 19,901 | 19,701 | — | 150,467 |
| 1993 | — | 111,600 | 32,001 | 32,001 | — | 318,682 |
| 1992 | — | 118,000 | 104,022 | 75,003 | — | 523,420 |
| 1991 | 250 | 89,000 | 167,892 | 103,302 | — | 626,553 |
| 1990 | 250 | 70,000 | 177,121 | 102,003 | — | 618,355 |
| 1989 | 250 | 93,000 | 176,321 | 102,804 | — | 678,354 |
| 1988 | 250 | — | 198,021 | — | — | 587,615 |
| 1987 | — | 146,000 | — | 181,280 | — | 1,146,184 |