Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HEXION INC.
3670 GRANT CREEK RD, MISSOULA, MT, 59808
Parent company: HEXION HOLDINGS CORP
Carcinogen
— 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 | Methanol | Formaldehyde | Phenol | Ammonia | Formic acid | Total (lbs) |
| 2024 | 7,457 | 8,412 | 590 | — | — | 16,459 |
| 2023 | 7,457 | 8,413 | 590 | — | — | 16,460 |
| 2022 | 7,424 | 9,063 | 599 | — | — | 17,086 |
| 2021 | 8,406 | 10,147 | 607 | — | — | 19,160 |
| 2020 | 8,117 | 9,665 | 617 | — | — | 18,399 |
| 2019 | 8,117 | 9,665 | 617 | — | — | 18,399 |
| 2018 | 8,511 | 10,069 | 592 | — | — | 19,172 |
| 2017 | 8,572 | 10,182 | 655 | — | — | 19,409 |
| 2016 | 8,620 | 10,155 | 660 | — | — | 19,435 |
| 2015 | 8,491 | 9,953 | 661 | — | — | 19,105 |
| 2014 | 7,443 | 8,973 | 179 | — | — | 16,596 |
| 2013 | 6,997 | 9,129 | 93 | — | — | 16,219 |
| 2012 | 7,075 | 8,794 | 89 | — | — | 15,957 |
| 2011 | 6,476 | 8,246 | 203 | — | — | 14,925 |
| 2010 | 6,371 | 8,181 | 95 | — | — | 14,646 |
| 2009 | 5,948 | 7,509 | 78 | — | — | 13,535 |
| 2008 | 7,612 | 9,097 | 461 | — | — | 17,170 |
| 2007 | 11,722 | 5,533 | 224 | — | — | 17,479 |
| 2006 | 11,428 | 5,332 | 207 | — | — | 16,967 |
| 2005 | 11,568 | 5,455 | 265 | — | — | 17,288 |
| 2004 | 13,478 | 5,580 | 271 | — | — | 19,329 |
| 2003 | 12,590 | 5,261 | 279 | — | — | 18,130 |
| 2002 | 11,707 | 5,100 | 305 | — | 131 | 17,243 |
| 2001 | 8,226 | 4,125 | 185 | 58 | 8 | 12,602 |
| 2000 | 7,219 | 3,608 | 212 | 307 | 14 | 11,360 |
| 1999 | 7,817 | 3,761 | 387 | 319 | 14 | 12,298 |
| 1998 | 7,979 | 3,512 | 303 | 328 | — | 12,122 |
| 1997 | 6,978 | 4,221 | 182 | 323 | — | 11,704 |
| 1996 | 7,707 | 4,201 | 280 | 302 | — | 12,490 |
| 1995 | 6,626 | 3,875 | 278 | 500 | — | 11,279 |
| 1994 | 16,350 | 4,080 | 199 | 500 | — | 21,129 |
| 1993 | 16,250 | 3,370 | 206 | 530 | — | 20,356 |
| 1992 | 14,030 | 3,270 | 175 | 470 | — | 17,945 |
| 1991 | 12,110 | 3,060 | 113 | — | — | 15,283 |
| 1990 | 12,950 | 2,450 | 500 | 250 | — | 16,150 |
| 1989 | 12,140 | 3,850 | 230 | — | — | 16,220 |
| 1988 | 12,340 | 27,100 | 2,700 | — | — | 42,140 |
| 1987 | — | — | 2,350 | — | — | 2,350 |
▎ 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.