Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
RAYTHEON CO EQUIPMENT DIV MANUFACTURING
20 SEYON ST, WALTHAM, MA, 022548382
Parent company: RAYTHEON CO
Carcinogen
— EPA classifications across all reporting years
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 | Dichloromethane | 1,1,1-Trichloroethane | Freon 113 (CFC-113) | Toluene | Methanol | Total (lbs) |
| 1994 | — | — | — | — | — | 961 |
| 1993 | — | — | — | — | 5,200 | 6,073 |
| 1992 | — | 18,400 | 7 | — | 377 | 20,586 |
| 1991 | — | 41,900 | 810 | — | 520 | 45,303 |
| 1990 | — | 65,700 | 3,920 | 12,300 | 784 | 85,981 |
| 1989 | 284,000 | 73,000 | 18,600 | 15,750 | 19,300 | 416,890 |
| 1988 | — | 66,052 | 36,869 | 21,100 | 13,960 | 149,863 |
| 1987 | 84,653 | 82,457 | — | — | — | 177,869 |
▎ 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.