Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTCHESTER PLASTICS LLC
42 MOUNTAIN AVE, NESQUEHONING, PA, 18240
Parent company: NICHE POLYMER
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 | Maleic anhydride | Acrylic acid | Antimony compounds | Zinc compounds | Total (lbs) | |
| 2024 | 10 | 10 | — | — | 20 | |
| 2023 | 10 | 10 | — | — | 20 | |
| 2022 | 10 | 10 | — | — | 20 | |
| 2021 | 10 | 10 | — | — | 20 | |
| 2020 | 10 | 10 | — | — | 20 | |
| 2019 | 10 | 10 | — | — | 20 | |
| 2018 | 10 | 10 | — | — | 20 | |
| 2017 | 10 | 10 | — | — | 20 | |
| 2016 | 10 | — | — | — | 10 | |
| 2015 | 10 | — | — | — | 10 | |
| 2014 | 10 | — | — | — | 10 | |
| 2013 | 10 | 10 | — | — | 20 | |
| 2012 | 15 | 15 | — | — | 30 | |
| 2011 | 15 | 15 | — | — | 30 | |
| 2010 | 15 | 15 | — | — | 30 | |
| 2009 | 15 | — | 15 | 15 | 45 | |
| 2008 | 15 | 15 | 15 | 15 | 60 | |
| 2007 | 15 | 15 | — | — | 30 | |
| 2006 | 15 | 15 | — | — | 30 | |
| 2005 | 10 | 15 | — | — | 25 | |
| 2004 | 10 | 15 | — | — | 25 | |
| 2003 | 10 | 15 | — | — | 25 | |
| 2002 | 10 | 10 | — | — | 20 | |
| 2001 | 10 | 10 | — | — | 20 | |
▎ 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.