Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
KEOKUK FERRO-SIL INC
2301 TWIN RIVERS DR, KEOKUK, IA, 52632
Parent company: NA
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 | Manganese compounds | Nickel compounds | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Manganese | Nickel | Total |
|---|---|---|---|---|---|---|
| 1997 | — | — | — | 15 | 15 | 45 |
| 1996 | — | — | — | 260 | 15 | 290 |
| 1995 | — | — | 15 | 260 | 15 | 290 |
| 1994 | 260 | 15 | 15 | — | — | 290 |
| 1993 | 260 | 15 | 15 | — | — | 290 |
| 1992 | — | 510 | 510 | — | — | 1,020 |
| 1991 | 505 | 505 | 260 | — | — | 1,270 |
| 1990 | 8,000 | 1,250 | 1,250 | — | — | 10,500 |
| 1989 | 2,000 | 1,500 | 1,250 | — | — | 4,750 |
| 1988 | — | — | — | — | — | 10 |