Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HOWMET CORP ALLOY DIV
41605 ANN ARBOR RD, PLYMOUTH, MI, 48170
Parent company: PECHINEY CORP
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 | Chromium | Cobalt | Nickel | Total (lbs) | ||
| 1992 | 255 | 255 | 500 | 1,010 | ||
| 1991 | 1,408 | 2,163 | 1,000 | 4,571 | ||
| 1990 | 1,416 | 1,990 | 1,251 | 4,657 | ||
| 1989 | 1,604 | 2,316 | 1,350 | 5,270 | ||
| 1988 | 1,410 | — | — | 1,410 | ||
| 1987 | 1,526 | — | — | 1,526 | ||
▎ 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.