Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHWEST ALLOYS INC
1560A MARBLE VALLEY RD, ADDY, WA, 991010115
Parent company: ALCOA INC
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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonia | Methanol | Lead | Copper | Total (lbs) |
| 2001 | 7,283 | 30,266 | — | 9,380 | 119 | 47,048 |
| 2000 | 9,750 | 48,290 | — | — | 180 | 58,220 |
| 1999 | 6,507 | 66,544 | — | — | 329 | 73,380 |
| 1998 | 11,101 | 51,157 | — | — | 318 | 62,576 |
| 1997 | 2,802 | 69,880 | — | — | 222 | 72,904 |
| 1996 | 15,122 | 71,560 | — | — | 193 | 86,875 |
| 1995 | 12,608 | 150,488 | — | — | 282 | 163,379 |
| 1994 | 109,237 | 94,675 | 2,603 | — | — | 206,602 |
| 1993 | 209,055 | 62,125 | — | — | — | 271,520 |
| 1992 | 170,702 | 12,669 | — | — | — | 183,418 |
| 1991 | 239,654 | 19,154 | — | — | — | 258,824 |
| 1990 | 1 | 17,625 | 2,537 | — | — | 20,214 |
| 1989 | — | 20,815 | 2,806 | — | 224 | 24,068 |
| 1988 | — | 18,247 | 3,262 | — | — | 21,510 |
▎ 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.