Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
AMERICAN SILICON TECHNOLOGIES
100 S 4TH ST, ROCK ISLAND, WA, 98850
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 | Copper | Propylene | Phosphoric acid | Total (lbs) | ||
| 1997 | 776 | — | — | 776 | ||
| 1996 | 834 | — | — | 834 | ||
| 1995 | 10,920 | 311 | 117 | 11,348 | ||
| 1994 | 11,556 | 403 | — | 11,959 | ||
| 1993 | 9,947 | 375 | — | 10,322 | ||
▎ 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.