Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MEMC SOUTHWEST INC
6416 HWY 75 S, SHERMAN, TX, 750919493
Parent company: MEMC ELECTRONIC MATERIALS 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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Hydrogen fluoride | Nitric acid | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Total (lbs) | |
| 2001 | 625 | 395 | 90 | — | 1,110 | |
| 2000 | 4,012 | 915 | 295 | — | 5,222 | |
| 1999 | 1,805 | 755 | 255 | — | 2,815 | |
| 1998 | 4,960 | 1,061 | 255 | 10 | 6,286 | |
| 1997 | 1,914 | 834 | 147 | 10 | 2,905 | |
| 1996 | 4,222 | 637 | 119 | 10 | 4,988 | |
| 1995 | 3,952 | 260 | 505 | 10 | 4,727 | |
▎ 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.