Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTAK OF OREGON
3941 24TH AVE, FOREST GROVE, OR, 97116
Parent company: NA
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 | Ammonia | Copper compounds | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Sodium hydroxide (solution) | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Total (lbs) |
| 2024 | — | 0 | — | — | — | 0 |
| 2023 | — | 0 | — | — | — | 0 |
| 2022 | — | 0 | — | — | — | 0 |
| 2021 | — | 0 | — | — | — | 0 |
| 2020 | — | 0 | — | — | — | 0 |
| 2019 | — | 0 | — | — | — | 0 |
| 2018 | — | 0 | — | — | — | 0 |
| 2017 | — | 1 | — | — | — | 2 |
| 2016 | — | 2 | — | — | — | 4 |
| 2015 | — | 1 | — | — | — | 2 |
| 2014 | — | 3 | — | — | — | 5 |
| 2013 | — | 2 | — | — | — | 4 |
| 2012 | — | 0 | — | — | — | 2 |
| 2011 | — | 0 | — | — | 5 | 6 |
| 2010 | — | 1 | — | — | 5 | 7 |
| 2009 | — | 0 | — | — | 5 | 6 |
| 2008 | — | 0 | — | — | 5 | 5 |
| 2007 | — | 0 | — | — | 5 | 5 |
| 2006 | — | 0 | — | — | 5 | 5 |
| 2005 | — | 10 | — | — | 15 | 25 |
| 2004 | — | 10 | — | — | 15 | 25 |
| 2003 | — | 10 | — | — | 15 | 25 |
| 2002 | — | 10 | — | — | 15 | 36 |
| 2001 | 255 | 10 | — | — | 10 | 296 |
| 2000 | 255 | 500 | — | — | 255 | 1,010 |
| 1999 | 500 | 500 | — | — | — | 1,000 |
| 1998 | 1,450 | 500 | — | — | — | 1,950 |
| 1997 | 2,250 | — | — | — | — | 2,250 |
| 1996 | 2,250 | — | — | — | — | 2,250 |
| 1995 | 2,250 | — | 10 | — | — | 2,260 |
| 1994 | 2,250 | — | 10 | — | — | 2,260 |
| 1993 | 2,250 | — | 10 | — | — | 2,260 |
| 1992 | 2,250 | — | 10 | — | — | 2,260 |
| 1991 | 2,250 | — | 10 | — | — | 2,260 |
| 1990 | 2,250 | — | 10 | — | — | 2,260 |
| 1989 | 2,750 | — | 500 | — | — | 3,250 |
| 1988 | 2,750 | — | — | 500 | — | 3,250 |
▎ 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.