Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
1500 12TH ST NW - 1502 12TH ST NW, MASON CITY, IA, 50401
Parent company: ASSA ABLOY 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 | Xylene (mixed isomers) | Styrene | 1,2,4-Trimethylbenzene | Methyl ethyl ketone | Toluene | Total |
|---|---|---|---|---|---|---|
| 2024 | — | 12,358 | — | — | — | 78,685 |
| 2023 | — | 14,830 | — | — | — | 14,830 |
| 2022 | — | 10,952 | — | — | 10,080 | 41,192 |
| 2021 | — | 14,071 | — | — | — | 14,071 |
| 2020 | — | 17,397 | — | — | — | 17,397 |
| 2019 | — | 26,800 | 23,500 | — | 9,767 | 60,067 |
| 2018 | — | 26,806 | 23,287 | — | 9,800 | 59,910 |
| 2017 | 4,923 | 24,163 | 22,880 | — | 9,329 | 61,311 |
| 2016 | 8,000 | 20,000 | 20,000 | — | 11,000 | 59,017 |
| 2015 | — | 19,000 | 20,000 | — | 9,500 | 48,509 |
| 2014 | — | 15,000 | 18,000 | — | 9,400 | 42,413 |
| 2013 | — | 15,000 | — | — | 9,400 | 24,415 |
| 2012 | — | 12,000 | — | — | — | 12,005 |
| 2011 | 19,842 | — | — | — | — | 19,845 |
| 2010 | 20,492 | — | — | — | — | 20,494 |
| 2009 | 24,412 | — | — | — | — | 24,415 |
| 2008 | 34,500 | — | — | — | — | 34,503 |
| 2007 | 31,900 | — | — | — | — | 31,929 |
| 2006 | 10,475 | — | — | — | — | 10,488 |
| 2005 | — | — | — | — | — | 11 |
| 2004 | 10,650 | — | — | — | — | 10,651 |
| 2003 | 16,750 | — | — | — | — | 16,750 |
| 2002 | 19,700 | — | — | — | — | 19,700 |
| 2001 | 18,250 | — | — | 17,200 | — | 35,450 |
| 2000 | 11,970 | — | — | 11,570 | — | 23,540 |
| 1999 | 11,700 | — | — | 14,300 | — | 26,000 |
| 1998 | 80,800 | — | — | — | — | 80,800 |
| 1997 | 206,000 | — | — | 13,450 | — | 219,450 |
| 1996 | 304,717 | — | — | 7,075 | — | 311,792 |
| 1995 | 306,259 | — | — | 11,305 | — | 317,564 |
| 1994 | 312,870 | — | — | 10,450 | — | 323,320 |