Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KEOKUK STEEL CASTINGS RIVER PLANT
COMMERCIAL & M STS, KEOKUK, IA, 52632
Parent company: NATIONAL CASTINGS INC
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 | Manganese | Nickel | Total (lbs) | ||
| 1993 | 470 | 510 | 200 | 1,180 | ||
| 1992 | 800 | 800 | 330 | 1,930 | ||
| 1991 | 1,150 | 1,050 | 530 | 2,730 | ||
| 1990 | 1,200 | 1,050 | 750 | 3,000 | ||
| 1989 | 1,500 | 750 | 750 | 3,000 | ||
| 1987 | 750 | 750 | — | 1,500 | ||
▎ 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.