Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KOPPERS INC. (NORTH LITTLE ROCK AR)
2201 EDMONDS ST, NORTH LITTLE ROCK, AR, 72117
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 | 12,000 | — | — | — | 18 | 12,018 |
| 2023 | 18,200 | — | — | — | 26 | 18,226 |
| 2022 | 16,600 | — | — | — | 24 | 16,624 |
| 2021 | 18,600 | — | — | — | 26 | 18,626 |
| 2020 | 21,200 | — | — | — | 27 | 21,227 |
| 2019 | 15,600 | — | — | — | 20 | 15,620 |
| 2018 | 4,401 | — | — | — | 9 | 4,410 |
| 2017 | 4,100 | — | — | — | 8 | 4,108 |
| 2016 | 4,400 | — | — | — | 9 | 4,409 |
| 2015 | 2,441 | — | — | — | 4 | 2,445 |
| 2014 | 2,010 | — | — | — | 3 | 2,013 |
| 2013 | 2,160 | — | — | — | 3 | 2,163 |
| 2012 | 2,210 | — | — | — | 3 | 2,213 |
| 2011 | 2,540 | — | — | — | 5 | 2,545 |
| 2010 | 2,790 | — | — | — | 5 | 2,795 |
| 2009 | 6,147 | — | — | — | 3 | 6,150 |
| 2008 | 5,145 | — | — | — | 3 | 5,148 |
| 2007 | 6,673 | — | — | — | 3 | 6,676 |
| 2006 | 6,514 | — | — | — | 4 | 6,518 |
| 2005 | 10,234 | — | — | — | 7 | 10,241 |
| 2004 | 10,500 | — | — | — | 8 | 10,508 |
| 2003 | 8,200 | — | — | — | 139 | 8,341 |
| 2002 | 7,005 | — | — | — | 61 | 7,066 |
| 2001 | 10,300 | — | — | — | 221 | 10,522 |
| 2000 | 12,551 | — | — | — | 101 | 12,653 |
| 1999 | 12,249 | — | — | — | — | 12,249 |
| 1998 | 13,364 | — | — | — | — | 13,364 |
| 1997 | 14,279 | — | — | — | — | 14,279 |
| 1996 | 17,357 | — | — | — | — | 17,357 |
| 1995 | 8,509 | — | — | — | — | 8,509 |
| 1994 | 20,511 | — | — | — | — | 20,511 |
| 1993 | 39,400 | — | — | — | — | 39,400 |
| 1992 | 34,110 | — | — | — | — | 34,110 |
| 1991 | 12,910 | — | — | — | — | 12,910 |
| 1990 | 10,492 | — | — | — | — | 10,492 |
| 1989 | — | 2,240 | 301 | 233 | — | 2,774 |
| 1988 | — | 2,398 | 552 | 611 | — | 3,561 |
| 1987 | — | — | 1,672 | 1,633 | — | 3,305 |
▎ 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.