Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
L E MASON CO
98 BUSINESS ST, HYDE PARK, MA, 021362198
Parent company: THOMAS & BETTS CORP
Carcinogen
PBT
— 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 | Lead | Total (lbs) | ||
| 2001 | — | — | 4 | 4 | ||
| 1996 | — | 5 | — | 5 | ||
| 1995 | — | 5 | — | 5 | ||
| 1994 | 26,402 | 5 | — | 26,407 | ||
| 1993 | 80,090 | — | — | 80,090 | ||
| 1992 | 76,775 | — | — | 76,775 | ||
| 1991 | 48,303 | — | — | 48,303 | ||
| 1990 | 48,461 | — | — | 48,461 | ||
| 1989 | 35,088 | — | — | 35,088 | ||
| 1987 | 42,000 | — | — | 42,000 | ||
▎ 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.