Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SMITHCO ENGINEERING INC
6312 S 39TH ST, TULSA, OK, 74132
Parent company: HUDSON CORP
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 | Dichloromethane | Chromium | Nickel | Total (lbs) | ||
| 1998 | 10,769 | — | — | 10,769 | ||
| 1997 | 12,308 | — | — | 12,308 | ||
| 1996 | 12,308 | — | — | 12,308 | ||
| 1995 | 8,696 | 250 | 5 | 8,951 | ||
| 1991 | 1,000 | — | — | 1,000 | ||
▎ 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.