Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
GMT MICROELECTRONICS
950 RITTENHOUSE RD, NORRISTOWN, PA, 19403
Parent company: NA
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 | Acetone | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Phosphoric acid | Sodium hydroxide (solution) | Total (lbs) |
| 1998 | — | 1,000 | — | — | — | 1,000 |
| 1997 | — | 1,000 | 500 | 500 | — | 2,500 |
| 1996 | — | 1,000 | 500 | 500 | — | 2,000 |
| 1995 | — | 500 | — | — | — | 500 |
| 1994 | — | — | 90 | — | — | 90 |
| 1993 | — | 250 | 200 | — | — | 450 |
| 1992 | 9,800 | 1,250 | 430 | 190 | — | 11,960 |
| 1991 | 9,300 | 1,000 | 230 | 290 | — | 11,000 |
| 1990 | 7,400 | 1,000 | 500 | 500 | — | 9,400 |
| 1989 | 6,200 | 1,790 | 1,000 | 500 | — | 10,490 |
| 1988 | 2,550 | 500 | — | — | 500 | 3,550 |
| 1987 | — | — | 500 | — | 1,000 | 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.