Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HOWMET CASTINGS
201 CERCON DR, HILLSBORO, TX, 76645
Parent company: ALCOA INC
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 | 1,1,1-Trichloroethane | 4,4'-Isopropylidenediphenol | Total (lbs) | |||
| 2001 | — | 14 | 14 | |||
| 2000 | — | 16 | 16 | |||
| 1999 | — | 15 | 15 | |||
| 1998 | — | 16 | 16 | |||
| 1997 | — | 17 | 17 | |||
| 1991 | 29,000 | — | 29,000 | |||
| 1990 | 28,100 | — | 28,100 | |||
| 1989 | 19,300 | — | 19,300 | |||
▎ 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.