Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
STEMCO LP
300 INDUSTRIAL DR, LONGVIEW, TX, 75602
Parent company: ENPRO INDUSTRIES INC
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 | Methyl ethyl ketone | Toluene | Cumene hydroperoxide | Sodium hydroxide (solution) | Certain glycol ethers | Total (lbs) |
| 2022 | — | — | — | — | — | 8 |
| 2021 | — | — | — | — | — | 9 |
| 2020 | — | — | — | — | — | 12 |
| 2019 | — | — | — | — | — | 22 |
| 2018 | — | — | — | — | — | 33 |
| 2017 | — | — | — | — | — | 36 |
| 2016 | — | — | — | — | — | 22 |
| 2015 | — | — | — | — | — | 34 |
| 2014 | — | — | — | — | — | 14 |
| 2013 | — | — | — | — | — | 35 |
| 2012 | — | — | — | — | — | 23 |
| 2011 | — | — | — | — | — | 17 |
| 2010 | — | 6,900 | — | — | — | 6,919 |
| 2009 | — | 7,286 | — | — | — | 7,399 |
| 2008 | — | 7,591 | — | — | — | 7,636 |
| 2007 | — | 7,475 | — | — | — | 7,511 |
| 2006 | — | 12,222 | — | — | — | 12,269 |
| 2005 | — | 11,920 | — | — | — | 11,952 |
| 2004 | — | 12,525 | — | — | — | 12,558 |
| 2003 | 58,989 | 9,566 | — | — | — | 68,555 |
| 2002 | 69,899 | 10,404 | — | — | 4,460 | 84,858 |
| 2001 | 83,840 | 12,120 | — | — | 4,600 | 100,731 |
| 2000 | 121,200 | 12,120 | — | — | — | 133,320 |
| 1999 | 101,000 | 20,200 | — | — | — | 121,200 |
| 1998 | 96,581 | 42,171 | — | — | — | 138,752 |
| 1997 | 137,738 | 48,706 | — | — | — | 186,444 |
| 1996 | 108,900 | 65,829 | — | — | — | 174,729 |
| 1995 | 14,614 | 20,167 | — | — | — | 34,781 |
| 1994 | 34,236 | 83,943 | 8,521 | — | — | 126,700 |
| 1993 | 26,739 | 71,319 | 5,734 | — | — | 103,792 |
| 1992 | 26,250 | 67,550 | — | — | — | 93,800 |
| 1991 | 22,250 | 62,250 | 5,150 | — | — | 89,650 |
| 1990 | 24,550 | 70,250 | 5,250 | — | — | 100,050 |
| 1989 | 28,020 | 69,241 | 7,117 | — | — | 104,378 |
| 1988 | 34,325 | — | 5,152 | 12,830 | — | 52,307 |
| 1987 | — | 500 | 500 | — | — | 1,000 |
▎ 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.