Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HITACHI SEMICONDUCTOR (AMERICA) INC
6431 LONGHORN DR, IRVING, TX, 75063
Parent company: HITACHI AMERICA LTD INC
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 | Certain glycol ethers | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Methanol | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Acetone | Total (lbs) |
| 1998 | — | — | 844 | — | — | 1,190 |
| 1997 | 2,304 | 1,692 | 1,382 | — | — | 5,940 |
| 1996 | 3,315 | 1,818 | 1,218 | 1,978 | — | 8,878 |
| 1995 | 3,901 | 3,623 | 1,734 | 1,965 | — | 12,306 |
| 1994 | 31,455 | 3,671 | 784 | 1,925 | — | 39,349 |
| 1993 | 27,664 | 4,460 | 3,383 | 2,926 | 7,646 | 52,533 |
| 1992 | 9 | 253 | 253 | 253 | 253 | 2,526 |
| 1991 | 5,000 | 3,500 | 750 | 500 | — | 11,005 |
| 1990 | 4,625 | 2,600 | 6,000 | 1,000 | 750 | 15,725 |
| 1989 | — | 3,480 | — | 500 | — | 3,980 |
▎ 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.