Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CHEMOIL SIGNAL HILL REFINERY
2020 WALNUT AVE, SIGNAL HILL, CA, 90806
Parent company: CHEMOIL REFINING CORP
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 | Cyclohexane | Toluene | Benzene | Xylene (mixed isomers) | Ammonia | Total (lbs) |
| 1993 | 1,709 | 808 | 973 | 370 | — | 4,080 |
| 1992 | 3 | 172 | 199 | 2 | — | 378 |
| 1991 | 3 | 131 | 153 | 2 | 1 | 292 |
| 1990 | 3 | 106 | 123 | 2 | 5 | 241 |
| 1989 | 2,438 | 250 | 250 | 250 | 250 | 3,688 |
| 1988 | 1,581 | 250 | — | 250 | 250 | 2,581 |
| 1987 | — | 250 | 250 | — | — | 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.