Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
NORTHWEST HARDWOODS INC. - HOPWOOD SAWMILL
1152 NATIONAL PIKE, HOPWOOD, PA, 15445
Parent company: NORTHWEST HARDWOODS INC
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Arsenic compounds | Copper compounds | Lead | Total |
|---|---|---|---|---|---|
| 2023 | — | — | — | 2 | 2 |
| 2022 | — | — | — | 2 | 2 |
| 2021 | — | — | — | 2 | 2 |
| 2020 | — | — | — | 2 | 2 |
| 2019 | — | — | — | 3 | 3 |
| 2018 | — | — | — | 3 | 3 |
| 2017 | — | — | — | 3 | 3 |
| 2016 | — | — | — | 3 | 3 |
| 2015 | — | — | — | 3 | 3 |
| 2014 | — | — | — | 3 | 3 |
| 2013 | — | — | — | 3 | 3 |
| 2012 | — | — | — | 3 | 3 |
| 2011 | — | — | — | 0 | 0 |
| 2010 | — | — | — | 2 | 2 |
| 2009 | — | — | — | 2 | 2 |
| 2008 | — | — | — | 1 | 1 |
| 1994 | 10 | 10 | 10 | — | 30 |
| 1993 | 10 | 10 | 10 | — | 30 |
| 1992 | 10 | 10 | 10 | — | 30 |
| 1991 | 10 | 10 | 10 | — | 30 |
| 1990 | 10 | 10 | 10 | — | 30 |
| 1989 | 250 | 250 | 250 | — | 750 |
| 1988 | 250 | — | — | — | 250 |