Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WOTCO INC
415 1ST ST, MILLS, WY, 82644
Parent company: WESTERN TECH SERVICES INTL 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 | Manganese | Chromium | Nickel | Copper | Total (lbs) | |
| 1999 | 142 | — | — | 2 | 144 | |
| 1998 | 326 | — | — | 3 | 329 | |
| 1997 | 497 | — | — | 4 | 501 | |
| 1995 | 752 | — | — | — | 752 | |
| 1994 | 1,600 | — | — | — | 1,600 | |
| 1993 | 2,192 | — | — | — | 2,192 | |
| 1992 | 750 | — | — | — | 750 | |
| 1991 | 568 | — | — | — | 568 | |
| 1990 | 250 | 250 | — | — | 500 | |
| 1989 | 750 | 250 | 250 | — | 1,250 | |
▎ 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.