Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SEMTECH CORP
652 MITCHELL RD, NEWBURY PARK, CA, 91320
Parent company: SEMTECH CORP
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 | Acetone | Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification) | Freon 113 (CFC-113) | Nitric acid | Hydrogen fluoride | Total (lbs) |
| 1996 | — | — | — | 10 | 10 | 20 |
| 1995 | — | — | — | 10 | 10 | 20 |
| 1994 | — | — | — | 10 | 10 | 20 |
| 1993 | 11,500 | — | — | 500 | 10 | 12,010 |
| 1992 | 5,945 | — | — | 500 | 10 | 6,455 |
| 1991 | 13,291 | — | — | 500 | 500 | 14,291 |
| 1990 | 17,561 | 8,250 | 2,800 | 500 | 500 | 29,611 |
| 1989 | — | — | — | 500 | — | 500 |
| 1988 | 500 | — | 500 | 250 | — | 1,250 |
▎ 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.