Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL OILWELL VARCO/TULSA MULTIPLEX
6750 S 57TH W AVE, TULSA, OK, 74131
Parent company: NATIONAL OILWELL VARCO LP
Carcinogen
PBT
— 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 | Copper | Nickel | Chromium | Manganese | Lead | Total (lbs) |
| 2024 | — | 66 | 21 | — | — | 87 |
| 2022 | 4,418 | 196 | 78 | 4 | — | 4,696 |
| 2020 | 13 | 1 | — | 1 | — | 15 |
| 2019 | 184 | 24 | 10 | 12 | — | 230 |
| 2018 | 4,791 | 420 | 153 | 140 | — | 5,504 |
| 2017 | 4,782 | 504 | — | 189 | 18 | 5,493 |
| 2016 | 1,265 | 704 | 619 | — | 18 | 2,606 |
| 2013 | — | — | — | — | 0 | 0 |
| 2012 | — | — | — | — | 0 | 0 |
| 1988 | — | — | — | — | — | 5 |
| 1987 | — | — | — | — | — | 5 |
▎ 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.