Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
AMERICAN OPTICAL CORP
14 MECHANIC ST, SOUTHBRIDGE, MA, 01550
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 | Freon 113 (CFC-113) | Methyl methacrylate | 1,1,1-Trichloroethane | Dichloromethane | Acetone | Total (lbs) |
| 1993 | 13,657 | — | — | — | — | 13,657 |
| 1992 | 16,105 | 5,160 | — | — | — | 21,265 |
| 1991 | 35,402 | 15,040 | 26,912 | 16,320 | 12,220 | 105,894 |
| 1990 | 14,820 | 42,560 | 16,000 | 15,656 | 11,540 | 100,576 |
| 1989 | 51,339 | 31,544 | 15,169 | 16,283 | — | 114,335 |
| 1988 | — | 31,600 | — | 3,350 | — | 43,900 |
| 1987 | — | — | 32,650 | 3,450 | — | 36,100 |
▎ 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.