Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL SEMICONDUCTOR CORP
2900 SEMICONDUCTOR DR, SANTA CLARA, CA, 950528090
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 | Acetone | Freon 113 (CFC-113) | Xylene (mixed isomers) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 1,1,1-Trichloroethane | Total (lbs) |
| 1999 | — | — | — | — | — | 2 |
| 1998 | — | — | — | 111 | — | 246 |
| 1997 | — | — | — | 107 | — | 1,242 |
| 1996 | — | — | — | — | — | 162 |
| 1995 | — | — | — | 131 | — | 157 |
| 1994 | — | — | — | 97 | — | 196 |
| 1993 | 6,380 | — | — | 115 | — | 6,552 |
| 1992 | 13,000 | — | 3,900 | 180 | — | 17,169 |
| 1991 | 20,000 | — | 6,800 | 400 | 4,830 | 32,448 |
| 1990 | 24,000 | 10,200 | 3,700 | 430 | 9,300 | 48,702 |
| 1989 | 52,436 | 17,422 | 8,000 | 3,550 | 8,990 | 100,473 |
| 1988 | — | 11,956 | 6,354 | 9,700 | — | 57,848 |
| 1987 | — | — | — | 9,950 | — | 17,850 |
▎ 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.