Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PHILLIPS 66 CO BILLINGS REFINERY
401 S 23RD ST, BILLINGS, MT, 59101
Parent company: PHILLIPS 66 CO
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) 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.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Propylene | Toluene | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | n-Hexane | Total (lbs) |
| 2024 | — | 9,157 | 12,824 | — | 8,977 | 70,843 |
| 2023 | 0 | 9,532 | 11,874 | — | 11,339 | 70,708 |
| 2022 | — | 11,387 | 13,301 | — | 10,890 | 94,912 |
| 2021 | — | 11,496 | 14,725 | — | 11,591 | 87,318 |
| 2020 | 224 | 11,860 | 14,812 | — | 12,324 | 88,619 |
| 2019 | 160 | 9,000 | 15,000 | — | 11,600 | 81,144 |
| 2018 | 470 | 9,400 | 15,200 | — | 10,900 | 81,439 |
| 2017 | — | 46,600 | 17,306 | — | 27,601 | 135,646 |
| 2016 | 1,000 | 12,200 | 16,503 | — | 14,801 | 85,214 |
| 2015 | — | 30,400 | 16,900 | — | 19,400 | 104,445 |
| 2014 | 70,000 | 42,621 | 15,777 | — | 22,025 | 203,858 |
| 2013 | 111,198 | 29,331 | 15,419 | — | 18,381 | 300,020 |
| 2012 | 140,000 | 18,500 | 15,401 | — | 12,900 | 305,381 |
| 2011 | 83,000 | 14,400 | 15,503 | — | 10,901 | 162,658 |
| 2010 | 110,000 | 7,600 | 15,519 | — | 10,305 | 185,456 |
| 2009 | 160,000 | 8,200 | 16,801 | — | 12,100 | 241,010 |
| 2008 | 95,000 | 8,100 | 17,214 | — | 13,409 | 178,312 |
| 2007 | 95,000 | 8,201 | 17,680 | 36,092 | 12,480 | 209,647 |
| 2006 | 51,000 | 8,500 | 10,902 | 36,086 | 66,001 | 198,701 |
| 2005 | 48,000 | 6,700 | 10,505 | 34,000 | 61,001 | 190,566 |
| 2004 | 63,000 | 8,800 | 5,400 | 49,000 | 53,000 | 199,280 |
| 2003 | 61,000 | 13,600 | 6,700 | 62,000 | 55,000 | 226,084 |
| 2002 | 63,000 | 5,200 | 7,204 | 91,000 | 75,000 | 262,126 |
| 2001 | 6,900 | 8,400 | 9,404 | 190,000 | 2,250 | 244,709 |
| 2000 | 66,000 | 8,840 | 14,004 | 89,000 | 2,700 | 213,915 |
| 1999 | — | 12,810 | 18,604 | 58,000 | 3,000 | 130,124 |
| 1998 | — | 19,900 | 27,504 | — | 4,800 | 102,669 |
| 1997 | — | 18,840 | 27,405 | — | 4,900 | 102,860 |
| 1996 | — | 18,840 | 27,704 | — | 3,900 | 101,574 |
| 1995 | — | 21,750 | 23,204 | — | 1,440 | 100,380 |
| 1994 | — | 21,800 | 59,204 | — | — | 158,581 |
| 1993 | — | 32,800 | 11,004 | — | — | 129,541 |
| 1992 | — | 29,720 | 10,703 | — | — | 116,533 |
| 1991 | — | 32,760 | 10,844 | — | — | 105,499 |
| 1990 | — | 33,000 | 12,534 | — | — | 110,566 |
| 1989 | — | 93,000 | 45,524 | — | — | 327,000 |
| 1988 | — | 86,000 | 45,493 | — | — | 678,609 |
| 1987 | — | — | — | — | — | 17,313 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.