Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PETER GRAY CORP
300 3RD ST, CAMBRIDGE, MA, 02142
Parent company: NA
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 | Copper | Total (lbs) | |||
| 1992 | 5,255 | — | 5,255 | |||
| 1991 | 11,050 | 250 | 11,300 | |||
| 1990 | 14,050 | 250 | 14,300 | |||
| 1989 | 5,250 | — | 5,250 | |||
| 1988 | 16,950 | 250 | 17,200 | |||
▎ 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.