Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
OPAL GAS PLANT
1 MILE WEST OF OPAL HWY 30, OPAL, WY, 83124
Parent company: THE WILLIAMS COS
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 | n-Hexane | Toluene | Xylene (mixed isomers) | Benzene | Ethylbenzene | Total (lbs) |
| 2024 | 9,400 | 8,210 | 6,550 | 1,750 | 1,077 | 26,987 |
| 2023 | 8,180 | 6,660 | 5,260 | 1,510 | 880 | 22,490 |
| 2022 | 8,780 | 8,123 | 6,182 | 1,801 | 980 | 25,866 |
▎ 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.