Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KOPPERS INC (ROANOKE)
4020 KOPPERS RD, SALEM, VA, 24153
Parent company: KOPPERS INC
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 | Creosote | Naphthalene | Dibenzofuran | Anthracene | Polycyclic aromatic compounds | Total (lbs) |
| 2024 | 2,901 | — | — | — | 5 | 2,906 |
| 2023 | 3,401 | — | — | — | 7 | 3,408 |
| 2022 | 3,601 | — | — | — | 7 | 3,608 |
| 2021 | 1,891 | — | — | — | 4 | 1,894 |
| 2020 | 2,901 | — | — | — | 5 | 2,906 |
| 2019 | 3,701 | — | — | — | 7 | 3,708 |
| 2018 | 3,001 | — | — | — | 5 | 3,006 |
| 2017 | 3,001 | — | — | — | 5 | 3,006 |
| 2016 | 4,201 | — | — | — | 8 | 4,209 |
| 2015 | 5,901 | — | — | — | 12 | 5,913 |
| 2014 | 5,401 | — | — | — | 11 | 5,412 |
| 2013 | 6,001 | — | — | — | 12 | 6,013 |
| 2012 | 6,201 | — | — | — | 13 | 6,214 |
| 2011 | 6,501 | — | — | — | 14 | 6,515 |
| 2010 | 5,602 | — | — | — | 12 | 5,614 |
| 2009 | 9,006 | — | — | — | 10 | 9,016 |
| 2008 | 9,002 | — | — | — | 10 | 9,012 |
| 2007 | 9,800 | — | — | — | 11 | 9,811 |
| 2006 | 9,901 | — | — | — | 11 | 9,912 |
| 2005 | 10,602 | — | — | — | 11 | 10,613 |
| 2004 | 11,405 | — | — | — | 12 | 11,417 |
| 2003 | 6,005 | — | — | — | 5 | 6,010 |
| 2002 | 5,610 | — | — | — | 127 | 5,737 |
| 2001 | 5,407 | — | — | — | 7 | 5,414 |
| 2000 | 5,566 | — | — | — | 48 | 5,614 |
| 1999 | 8,872 | — | — | — | — | 8,872 |
| 1998 | 15,102 | — | — | — | — | 15,102 |
| 1997 | 12,838 | — | — | — | — | 12,838 |
| 1996 | 12,151 | — | — | — | — | 12,151 |
| 1995 | 13,000 | — | — | — | — | 13,000 |
| 1994 | 22,900 | — | — | — | — | 22,900 |
| 1993 | 21,800 | — | — | — | — | 21,800 |
| 1992 | 21,800 | — | — | — | — | 21,800 |
| 1991 | 4,910 | — | — | — | — | 4,910 |
| 1990 | 7,282 | — | — | — | — | 7,282 |
| 1989 | — | 2,189 | 596 | 463 | — | 3,248 |
| 1988 | — | — | 1,128 | 1,229 | — | 2,357 |
▎ 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.