Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MASONITE CORP - 19TH ST FACILITY
2510 19TH ST SW, MASON CITY, IA, 50401
Parent company: MASONITE CORP
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 | Diisocyanates | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |||
| 2020 | 929 | — | 929 | |||
| 2019 | 1,078 | — | 1,078 | |||
| 2018 | 560 | — | 560 | |||
| 2014 | 274 | — | 274 | |||
| 1991 | — | 5 | 5 | |||
| 1990 | — | 5 | 5 | |||
| 1989 | — | 250 | 250 | |||
| 1988 | — | 250 | 250 | |||
| 1987 | — | 250 | 250 | |||
▎ 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.