Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTERN INTERNATIONAL GAS & CYLINDERS INC.
7173 HWY 159E, BELLVILLE, TX, 77418
Parent company: MATHESON TRI-GAS INC
Carcinogen
— EPA classifications across all reporting years
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 | N,N-Dimethylformamide | Propylene | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | ||
| 2024 | 6,768 | 1,402 | 525 | 8,694 | ||
| 2023 | 6,834 | 1,402 | 525 | 8,761 | ||
| 2022 | 6,798 | 1,402 | 525 | 8,724 | ||
| 2021 | — | 1,402 | 525 | 1,927 | ||
| 2020 | 5,751 | 1,411 | 525 | 7,687 | ||
| 2019 | 6,764 | 1,530 | 525 | 8,819 | ||
| 2018 | 1,228 | — | 2,042 | 3,270 | ||
| 2017 | 50 | — | — | 50 | ||
▎ 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.