Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KENNAMETAL INC
1576 ARONA RD, IRWIN, PA, 15642
Parent company: KENNAMETAL INC
Carcinogen
— 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 | Cobalt | Nickel | Cobalt compounds | Total (lbs) | ||
| 2019 | 22 | — | — | 22 | ||
| 2018 | 11 | — | — | 11 | ||
| 2017 | 3 | — | — | 3 | ||
| 2016 | 2 | — | — | 2 | ||
| 2015 | 4 | — | — | 4 | ||
| 2014 | 5 | — | — | 5 | ||
| 2013 | 4 | — | — | 4 | ||
| 2012 | 4 | — | — | 4 | ||
| 2011 | 2 | — | — | 2 | ||
| 2010 | 1 | — | — | 1 | ||
| 2009 | — | — | 1 | 1 | ||
| 2008 | 135 | — | — | 135 | ||
| 2007 | 430 | — | — | 430 | ||
| 2006 | 133 | — | — | 133 | ||
| 2005 | 43 | — | — | 43 | ||
| 2004 | 41 | — | — | 41 | ||
| 2003 | 37 | — | — | 37 | ||
| 2002 | 47 | — | — | 47 | ||
| 2001 | 57 | — | — | 57 | ||
| 2000 | 47 | — | — | 47 | ||
| 1999 | 41 | — | — | 41 | ||
| 1998 | 51 | 5 | — | 56 | ||
| 1997 | 171 | 39 | — | 210 | ||
▎ 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.