Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
SEM PRODS INC
120 SEM LN, BELMONT, CA, 940021165
Parent company: NA
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Toluene | Methyl ethyl ketone | Dichloromethane | Phosphoric acid | Total |
|---|---|---|---|---|---|
| 1992 | 3,550 | 1,500 | 1,500 | 255 | 6,805 |
| 1991 | 1,000 | 755 | 255 | 255 | 2,265 |
| 1990 | 1,328 | 255 | 255 | 255 | 2,093 |
| 1989 | 1,270 | 302 | 42 | 80 | 1,694 |
| 1988 | 1,160 | — | — | — | 1,160 |