Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ISTI PLANT SERVICES
16415 E MARSHALL ST, TULSA, OK, 74116
Parent company: NA
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 | Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | Nickel And Nickel Compounds | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Nickel compounds | Manganese | Total (lbs) |
| 2024 | 47 | 35 | — | — | — | 82 |
| 2023 | — | — | 19 | 14 | — | 32 |
| 2022 | — | — | — | — | — | 1 |
| 2021 | — | — | — | — | 1 | 3 |
| 2019 | — | — | — | — | — | 1 |
| 2015 | — | — | — | — | 12 | 12 |
▎ 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.