Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
AMTEC CORP AMRON DIV
920 AMRON AVE, ANTIGO, WI, 54409
Parent company: NATIONAL PRESTO INDUSTRIES
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 | Nitric acid | N-Methyl-2-pyrrolidone | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Phosphoric acid | Total (lbs) |
| 2024 | 2,350 | — | 365 | — | — | 2,720 |
| 2023 | 3,193 | — | 365 | — | — | 3,563 |
| 2022 | 2,954 | — | 366 | — | — | 3,324 |
| 2021 | 2,775 | — | 376 | — | — | 3,157 |
| 2020 | 2,789 | — | 404 | — | — | 3,198 |
| 2019 | 2,223 | — | 372 | — | — | 2,600 |
| 2018 | 2,721 | — | 341 | — | — | 3,067 |
| 2017 | 2,812 | — | 330 | — | — | 3,147 |
| 2016 | 2,368 | — | 319 | — | — | 2,691 |
| 2015 | 2,430 | — | 360 | — | — | 2,795 |
| 2014 | 2,184 | — | 306 | — | — | 2,495 |
| 2013 | 2,614 | — | 331 | — | — | 2,949 |
| 2012 | 3,244 | — | 369 | — | — | 3,618 |
| 2011 | 3,178 | — | 358 | — | — | 3,541 |
| 2010 | 3,220 | — | 368 | — | — | 3,593 |
| 2009 | 3,582 | — | 384 | — | — | 3,971 |
| 2008 | 3,350 | 12,690 | 432 | — | — | 16,478 |
| 2007 | 2,781 | 9,086 | 431 | — | — | 12,304 |
| 2006 | 2,691 | 9,317 | 450 | — | — | 12,464 |
| 2005 | 1,448 | 13,165 | — | — | — | 14,612 |
| 2004 | 1,688 | 12,539 | — | — | — | 14,227 |
| 2003 | 750 | — | — | — | — | 750 |
| 2002 | 748 | — | — | — | — | 873 |
| 2001 | 739 | — | — | — | — | 907 |
| 2000 | 664 | — | — | — | — | 830 |
| 1999 | 636 | — | — | — | — | 766 |
| 1994 | 500 | — | — | — | 255 | 755 |
| 1993 | 500 | — | — | 1,756 | 255 | 2,511 |
| 1992 | 500 | — | — | 2,607 | 255 | 3,362 |
| 1991 | 255 | — | — | 1,000 | 255 | 1,510 |
| 1990 | 500 | — | — | 500 | 500 | 1,500 |
| 1989 | 500 | — | — | 1,000 | 500 | 2,000 |
| 1988 | — | — | — | — | 500 | 500 |
| 1987 | 500 | — | — | — | — | 500 |
▎ 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.