Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
RAYTHEON CO RAYTRAN FACILITY MPTD
28 SEYON ST, WALTHAM, MA, 02254
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 | Trichloroethylene | 1,1,1-Trichloroethane | Ammonia | Acetone | Methanol | Total (lbs) |
| 1990 | 60 | 65 | 2 | — | — | 127 |
| 1989 | 500 | 448 | 250 | — | — | 1,198 |
| 1988 | — | — | 4 | — | 27 | 31 |
| 1987 | 292 | 328 | 3 | 53 | — | 676 |
▎ 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.