Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WILLIAMS OHIO VALLEY MIDSTREAM - MOUNDSVILLE FRACTIONATION P
200 CAIMAN DRIVE, MOUNDSVILLE, WV, 26041
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 | Cyclohexane | Xylene (mixed isomers) | Benzene | Ethylbenzene | Total (lbs) |
| 2024 | 10,300 | 2,060 | 1,440 | — | — | 13,800 |
| 2023 | 11,200 | 2,170 | — | — | — | 13,370 |
| 2022 | 9,800 | 1,940 | — | 147 | 70 | 11,957 |
▎ 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.