Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HOWMET CASTINGS & SERVICES INC
5650 COMMERCE BLVD, MORRISTOWN, TN, 37814
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 | Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification) | Freon 113 (CFC-113) | Total (lbs) | ||
| 1991 | 12,827 | — | 14,053 | 26,880 | ||
| 1990 | 16,099 | 16,099 | 7,400 | 39,598 | ||
| 1989 | 20,427 | 14,279 | 5,000 | 39,706 | ||
▎ 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.