Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HICKORY SPRINGS OF CALIFORNIA INC
30955 SAN ANTONIO ST, HAYWARD, CA, 94544
Parent company: HICKORY SPRINGS MANUFACTURING 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 | Dichloromethane | Toluene-2,6-diisocyanate | Toluene diisocyanate (mixed isomers) | Toluene-2,4-diisocyanate | Total (lbs) | |
| 1994 | — | — | 7 | — | 7 | |
| 1993 | — | — | 19 | — | 19 | |
| 1992 | — | — | 13 | — | 13 | |
| 1991 | — | — | 11 | — | 11 | |
| 1990 | — | — | 27 | — | 27 | |
| 1989 | 33,869 | 9 | — | 35 | 33,913 | |
| 1988 | 29,287 | — | — | — | 29,287 | |
| 1987 | 111,450 | 250 | — | — | 111,700 | |
▎ 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.