Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
30 PERWAL ST, WESTWOOD, MA, 02090
Parent company: ANALOG DEVICES INC
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
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 | Freon 113 (CFC-113) | 1,1,1-Trichloroethane | 1,1-Dichloro-1-fluoroethane (HCFC-141b) | Total (lbs) | ||
| 1995 | — | 13,364 | 5,313 | 18,677 | ||
| 1994 | — | 10,190 | 4,836 | 15,026 | ||
| 1992 | 28,606 | 13,660 | — | 42,266 | ||
| 1991 | 32,000 | 25,000 | — | 57,000 | ||
| 1990 | 27,000 | 16,900 | — | 43,900 | ||
| 1989 | 28,250 | 10,000 | — | 38,250 | ||
| 1988 | — | 11,000 | — | 11,000 | ||
▎ 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.