Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV RIG SYSTEMS SERVICE CENTER BAMMEL
5100 N SAM HOUSTON PKWY W, HOUSTON, TX, 77086
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 | Toluene | Manganese | Chromium | Copper | Nickel | Total (lbs) |
| 2024 | — | 12 | 100 | 115 | 15 | 335 |
| 2023 | — | 1,671 | 1,272 | 395 | 52 | 3,484 |
| 2018 | — | 76 | 82 | 6 | 47 | 211 |
| 2017 | — | 31 | 45 | — | 25 | 102 |
| 2016 | — | 5 | 11 | 33 | 31 | 81 |
| 2013 | 6,547 | — | — | — | — | 6,547 |
| 2012 | 7,142 | — | — | — | — | 7,142 |
▎ 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.