Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
224 RIVER RD, RIDGWAY, PA, 15853
Parent company: GKN POWDER METALLURGY HOLDINGS INC
Reported on-site TRI releases in pounds, grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases across all available years.
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| Year | Copper | Nickel | Manganese | Copper compounds | Nickel compounds | Total |
|---|---|---|---|---|---|---|
| 2024 | 4 | 4 | 9 | — | — | 17 |
| 2023 | 4 | 4 | 9 | — | — | 17 |
| 2022 | 4 | 4 | 7 | — | — | 15 |
| 2021 | 2 | 3 | 6 | — | — | 11 |
| 2020 | 2 | 2 | 2 | — | — | 6 |
| 2019 | 2 | 2 | 2 | — | — | 6 |
| 2018 | 2 | 2 | 2 | — | — | 8 |
| 2017 | 2 | 2 | 2 | — | — | 8 |
| 2016 | 2 | 2 | 2 | — | — | 8 |
| 2015 | 2 | 2 | 2 | — | — | 8 |
| 2014 | 2 | 2 | 2 | — | — | 8 |
| 2013 | 2 | 2 | 2 | — | — | 8 |
| 2012 | 6 | 10 | 10 | — | — | 28 |
| 2011 | 6 | 10 | 10 | — | — | 28 |
| 2010 | 6 | 10 | 10 | — | — | 28 |
| 2009 | 6 | 10 | 10 | — | — | 28 |
| 2008 | 6 | 10 | 10 | — | — | 28 |
| 2007 | 6 | 10 | 10 | — | — | 32 |
| 2006 | 6 | 10 | 260 | — | — | 282 |
| 2005 | 6 | 10 | 10 | — | — | 32 |
| 2004 | 6 | 10 | 10 | — | — | 32 |
| 2003 | 6 | 10 | 6 | — | — | 28 |
| 2002 | 6 | 10 | 6 | — | — | 28 |
| 2001 | 10 | 10 | 250 | — | — | 276 |
| 2000 | 10 | 10 | — | — | — | 20 |
| 1999 | 500 | 255 | — | — | — | 755 |
| 1998 | 255 | 10 | — | — | — | 265 |
| 1997 | 5 | 5 | — | — | — | 10 |
| 1996 | 5 | 5 | — | — | — | 10 |
| 1995 | 5 | 5 | — | — | — | 10 |
| 1994 | 5 | 5 | — | — | — | 10 |
| 1993 | 5 | 5 | — | — | — | 10 |
| 1992 | 5 | 5 | — | — | — | 10 |
| 1991 | 5 | 5 | — | — | — | 10 |
| 1990 | 5 | 5 | — | 5 | 5 | 20 |
| 1989 | 250 | 250 | — | 250 | 250 | 1,000 |