Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTERN GAS RESOURCES HILIGHT GAS PLANT
1464 HILIGHT RD, GILLETTE, WY, 82718
Parent company: WESTERN MIDSTREAM PARTNERS LP
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 | Formaldehyde | n-Hexane | Methanol | Benzene | Toluene | Total (lbs) |
| 2024 | — | 6,540 | 3,600 | 2,400 | 2,160 | 16,499 |
| 2023 | 21,747 | 2,733 | 3,239 | 1,842 | 706 | 30,537 |
| 2022 | — | 2,674 | — | 1,828 | 701 | 5,471 |
▎ 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.