Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PENNZOIL PRODUCTS CO ROOSEVELT REFINERY
WEST HWY 40, ROOSEVELT, UT, 84066
Parent company: PENNZOIL 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 | Cyclohexane | Benzene | Aluminum oxide (fibrous forms) | Propylene | Toluene | Total (lbs) |
| 1994 | 6,603 | 4,301 | — | 3,500 | 3,501 | 25,605 |
| 1993 | 11,000 | 6,200 | — | 4,200 | 5,200 | 38,691 |
| 1992 | 6,600 | 5,900 | — | 2,700 | 11,600 | 57,474 |
| 1991 | 11,630 | 13,060 | — | 310 | 7,500 | 41,200 |
| 1990 | 23,250 | 20,640 | — | 3,100 | 13,100 | 67,835 |
| 1989 | 4,500 | 11,500 | 44,000 | 1,100 | 5,050 | 72,150 |
| 1988 | 41,000 | 15,450 | 28,400 | 27,000 | 13,000 | 139,900 |
| 1987 | 42,759 | — | — | 26,500 | — | 70,509 |
▎ 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.