Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PROTOTYPE PLASTICS INC
3020 LAS HERMANAS ST, RANCHO DOMINGUEZ, CA, 90221
Parent company: PROTOTYPE PLASTICS INC
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 | Acetone | Styrene | Dichloromethane | Total (lbs) | ||
| 1991 | 6,600 | 3,753 | — | 10,353 | ||
| 1990 | 2,990 | 7,432 | — | 10,422 | ||
| 1989 | 4,800 | 8,360 | 200 | 13,360 | ||
| 1988 | 16,596 | — | 448 | 17,044 | ||
| 1987 | — | 5,700 | 1,800 | 7,500 | ||
▎ 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.