Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MASONITE CORP
300 FORD RD, UKIAH, CA, 954823403
Parent company: MASONITE INTERNATIONAL
Carcinogen
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 | Certain glycol ethers | Methanol | Formaldehyde | Polycyclic aromatic compounds | Lead compounds | Total (lbs) |
| 2001 | — | 44,902 | — | 821 | 7 | 45,730 |
| 2000 | — | 134,575 | — | 815 | — | 135,390 |
| 1999 | — | 168,064 | — | — | — | 168,064 |
| 1998 | 74,085 | 149,757 | — | — | — | 223,842 |
| 1997 | 103,891 | — | — | — | — | 103,891 |
| 1996 | 114,028 | — | — | — | — | 114,028 |
| 1995 | 108,279 | — | — | — | — | 108,279 |
| 1994 | 119,797 | — | — | — | — | 119,797 |
| 1989 | — | — | 5,000 | — | — | 5,000 |
▎ 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.