Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
PROTO CIRCUIT INC
2035 MIDWAY DR, TWINSBURG, OH, 44087
Parent company: NA
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 | Ammonia | Copper | Copper compounds | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total |
|---|---|---|---|---|---|
| 1999 | 250 | — | — | — | 250 |
| 1998 | 250 | 750 | 750 | — | 1,750 |
| 1997 | 250 | 750 | 750 | — | 1,750 |
| 1996 | 20,853 | — | — | — | 20,853 |
| 1995 | 14,360 | — | — | — | 14,360 |
| 1994 | 13,600 | — | — | 500 | 14,100 |
| 1993 | 14,308 | — | — | 500 | 14,808 |
| 1992 | 12,850 | — | — | 500 | 13,350 |
| 1991 | 11,250 | — | — | — | 11,250 |
| 1990 | 16,250 | — | — | — | 16,250 |
| 1989 | 12,250 | — | — | — | 12,250 |