Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US DOE WELDON SPRING SITE
7295 HWY 94 S, SAINT CHARLES, MO, 63304
Parent company: US DEPARTMENT OF ENERGY
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 | Ammonia | Aluminum (fume or dust) | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |
| 1998 | 11,685 | 10,982 | 6,236 | — | 28,903 | |
| 1994 | — | — | 11 | — | 11 | |
| 1993 | — | — | — | 255 | 255 | |
▎ 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.