Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
PARRISH ENTERPRISES (DBA OKLAHOMA INVESTMENT CASTING CO)
708 N 29TH, BLACKWELL, OK, 74631
Parent company: PARRISH ENTERPRISES
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 | Nickel | Chromium | Sodium hydroxide (solution) | Aluminum (fume or dust) | Aluminum oxide (fibrous forms) | Total |
|---|---|---|---|---|---|---|
| 1999 | 5 | 5 | — | — | — | 10 |
| 1998 | 5 | 5 | — | — | — | 10 |
| 1997 | 250 | 5 | — | — | — | 255 |
| 1996 | 250 | 5 | — | — | — | 255 |
| 1995 | 250 | 250 | — | — | — | 500 |
| 1994 | 250 | 250 | — | — | — | 500 |
| 1993 | 250 | 250 | — | — | — | 500 |
| 1992 | 250 | 250 | — | — | — | 500 |
| 1991 | 250 | 250 | — | — | — | 500 |
| 1990 | 35 | 35 | — | 35 | 35 | 175 |
| 1988 | — | — | 750 | 500 | 500 | 2,250 |