Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
JOHN ZINK CO LLC
W OAK & JOHN ZINK AVE, SKIATOOK, OK, 74070
Parent company: KOCH CHEMICAL TECHNOLOGY GROUP LLC
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 | Xylene (mixed isomers) | Manganese | Chromium | Nickel | Zinc (fume or dust) | Total (lbs) |
| 2001 | — | 250 | 250 | 250 | 250 | 1,000 |
| 2000 | — | 250 | 250 | 250 | — | 750 |
| 1999 | 5,760 | 250 | 5 | 5 | — | 6,020 |
| 1998 | 16,204 | 250 | 5 | 5 | — | 16,464 |
| 1997 | — | 250 | 250 | 5 | — | 505 |
▎ 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.