Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PQ CORP CHESTER
1201 W FRONT ST, CHESTER, PA, 19013
Parent company: PQ 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 | Chromium | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Polycyclic aromatic compounds | Benzo[g,h,i]perylene | Total (lbs) | |
| 2000 | — | — | 15 | 0 | 15 | |
| 1994 | — | 4 | — | — | 4 | |
| 1993 | — | 4 | — | — | 4 | |
| 1992 | — | 5 | — | — | 5 | |
| 1991 | — | 5 | — | — | 5 | |
| 1990 | — | 5 | — | — | 5 | |
| 1989 | 250 | — | — | — | 250 | |
| 1987 | 250 | — | — | — | 250 | |
▎ 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.