Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
MARKWEST HIDALGO PLANT
40351 FM 3541, ORLA, TX, 79770
Parent company: MARATHON PETROLEUM CORP
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Methanol | n-Hexane | Benzene | Toluene | Xylene (mixed isomers) | Total |
|---|---|---|---|---|---|---|
| 2024 | 2,131 | 1,454 | 388 | 366 | 159 | 4,532 |