Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
UNION CARBIDE CORP TECHNOLOGY PARK OPERATIONS
2001 UNION CARBIDE DRIVE, SOUTH CHARLESTON, WV, 25303
Parent company: THE DOW CHEMICAL 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 | Ethylene | Propylene | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Acetone | Methanol | Total (lbs) |
| 2024 | 23,529 | 8,650 | — | — | — | 32,179 |
| 2023 | 21,705 | 8,391 | — | — | — | 30,096 |
| 2022 | 22,991 | 10,315 | — | — | — | 33,306 |
| 2021 | 23,080 | 9,539 | — | — | — | 32,619 |
| 2020 | 20,306 | 8,735 | — | — | — | 29,041 |
| 2019 | 21,143 | 8,772 | — | — | — | 29,915 |
| 2018 | 23,039 | 8,929 | — | — | — | 31,968 |
| 2017 | 23,841 | 9,372 | — | — | — | 33,213 |
| 2016 | 23,499 | 9,363 | — | — | — | 32,862 |
| 2015 | 24,374 | 9,224 | — | — | — | 33,598 |
| 2014 | 26,079 | 16,842 | — | — | — | 42,921 |
| 2013 | 41,216 | 29,304 | — | — | — | 70,520 |
| 2012 | 41,941 | 29,974 | — | — | — | 75,516 |
| 2011 | 43,743 | 29,784 | — | — | — | 77,320 |
| 2010 | 44,131 | 30,632 | — | — | — | 78,034 |
| 2009 | 53,990 | 32,096 | — | — | — | 88,186 |
| 2008 | 57,834 | 32,800 | — | — | — | 93,563 |
| 2007 | 49,297 | 29,598 | — | — | — | 81,969 |
| 2006 | 46,895 | 30,924 | — | — | — | 80,513 |
| 2005 | 47,342 | 30,793 | — | — | — | 83,800 |
| 2004 | 59,944 | 30,372 | — | — | — | 93,907 |
| 2003 | 62,595 | 31,070 | — | — | 2,762 | 120,109 |
| 2002 | 61,561 | 33,122 | — | — | 6,173 | 103,810 |
| 2001 | 46,577 | 31,133 | — | — | 6,260 | 86,590 |
| 2000 | 64,491 | 35,094 | — | — | — | 101,188 |
| 1999 | 52,806 | 40,267 | — | — | 1,801 | 95,907 |
| 1998 | 54,853 | 41,538 | — | — | — | 96,835 |
| 1997 | 48,057 | 39,835 | — | — | — | 89,016 |
| 1996 | 33,488 | 28,258 | — | — | 2,450 | 66,221 |
| 1995 | 46,719 | 47,324 | — | — | 2,237 | 98,995 |
| 1994 | 50,669 | 42,015 | — | — | 2,961 | 96,940 |
| 1993 | 50,351 | 39,642 | — | 12,002 | 11,805 | 119,579 |
| 1992 | 93,982 | 63,591 | 24,339 | 10,223 | — | 194,061 |
| 1991 | 96,980 | 67,790 | 27,307 | 10,871 | 11,093 | 214,376 |
| 1990 | 102,778 | 78,341 | 38,488 | 30,824 | — | 254,120 |
| 1989 | 126,270 | 62,252 | 34,937 | 24,473 | — | 258,558 |
| 1988 | 121,295 | — | — | 17,106 | 45,653 | 194,049 |
| 1987 | 140,000 | — | — | 6,900 | — | 146,900 |
▎ 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.