Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV ROLLIGON ANDERSON
6740 HWY 30, ANDERSON, TX, 77830
Parent company: NATIONAL OILWELL VARCO LP
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) | Chromium | Nickel | Aluminum (fume or dust) | Manganese | Total (lbs) |
| 2024 | — | 245 | 115 | 68 | — | 428 |
| 2023 | — | — | — | — | — | 0 |
| 2022 | — | 5 | 12 | — | 2 | 19 |
| 2020 | — | — | 49 | — | — | 49 |
| 2019 | — | 103 | 102 | — | 59 | 280 |
| 2017 | — | — | — | — | — | 0 |
| 2008 | 16,366 | — | — | — | — | 16,366 |
▎ 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.