Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MT. HOOD CHEMICAL CORP
4444 N W YEON AVE, PORTLAND, OR, 97210
Parent company: NA
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 | 1,1,1-Trichloroethane | Phosphoric acid | Total (lbs) | ||
| 1994 | 22 | — | — | 22 | ||
| 1993 | 18 | — | — | 18 | ||
| 1992 | 21 | — | — | 21 | ||
| 1991 | 20 | 5 | — | 25 | ||
| 1990 | 20 | 7 | 5 | 32 | ||
| 1989 | 17 | 6 | — | 23 | ||
▎ 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.