Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
UNISIL CORP
2400 WALSH AVE, SANTA CLARA, CA, 95054
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 | Nitric acid | Hydrogen fluoride | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |
| 1997 | 250 | — | — | — | 250 | |
| 1996 | 250 | 250 | — | — | 500 | |
| 1995 | 5 | 5 | 5 | — | 15 | |
| 1994 | 5 | 5 | 5 | — | 15 | |
| 1993 | — | 5 | — | — | 5 | |
| 1992 | 750 | 250 | — | — | 1,000 | |
| 1991 | 750 | 250 | — | — | 1,000 | |
| 1990 | — | 280 | 290 | 45 | 615 | |
▎ 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.