Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NAMMO DEFENSE SYSTEMS INC
4051 N HIGLEY RD, MESA, AZ, 85215
Parent company: NAMMO INC
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 | 1,1,1-Trichloroethane | Lead compounds | Lead And Lead Compounds | Total (lbs) | ||
| 2024 | — | — | 507 | 507 | ||
| 2023 | — | 3 | — | 3 | ||
| 2022 | — | — | 2 | 2 | ||
| 2021 | — | — | 2 | 2 | ||
| 2020 | — | — | 8 | 8 | ||
| 2019 | — | 7 | — | 7 | ||
| 2018 | — | — | 4 | 4 | ||
| 2014 | — | 6 | — | 6 | ||
| 2013 | — | 0 | — | 0 | ||
| 2012 | — | 0 | — | 0 | ||
| 2011 | — | 0 | — | 0 | ||
| 2010 | — | 0 | — | 0 | ||
| 2009 | — | 0 | — | 0 | ||
| 2008 | — | 0 | — | 0 | ||
| 2007 | — | 0 | — | 0 | ||
| 2006 | — | 0 | — | 0 | ||
| 2005 | — | 0 | — | 0 | ||
| 2004 | — | 0 | — | 0 | ||
| 2003 | — | 5,569 | — | 5,569 | ||
| 2002 | — | 0 | — | 0 | ||
| 2001 | — | 0 | — | 0 | ||
| 1991 | 6,839 | — | — | 6,839 | ||
| 1990 | 9,741 | — | — | 9,741 | ||
| 1989 | 56,577 | — | — | 56,577 | ||
▎ 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.