Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
OFFSHORE OPERATIONS HOUSTON
9518 E MOUNT HO US TON RD, HOUSTON, TX, 77050
Parent company: US STEEL CORP
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 | Manganese | Lead | Chromium | Nickel | Total (lbs) | |
| 2024 | — | 5 | 12 | 29 | 46 | |
| 2023 | 5 | 3 | — | 16 | 24 | |
| 2022 | — | 7 | — | — | 7 | |
| 2021 | 6 | 10 | 3 | — | 19 | |
| 2020 | 7 | 9 | 3 | — | 18 | |
| 2019 | 20 | 4 | 34 | 7 | 64 | |
| 2018 | 11 | 0 | — | — | 11 | |
| 2017 | 6 | 1 | 0 | — | 7 | |
| 2016 | 2 | 0 | 0 | — | 3 | |
| 2015 | 12 | 3 | — | — | 15 | |
| 2014 | 14 | 3 | — | — | 17 | |
| 2013 | 6 | 1 | — | — | 7 | |
| 2012 | 6 | 1 | — | — | 7 | |
| 2011 | 2 | 0 | — | — | 2 | |
| 2010 | — | 0 | — | — | 0 | |
| 2009 | — | 0 | — | — | 0 | |
| 2008 | — | 2 | — | — | 2 | |
| 2007 | — | 16 | — | — | 16 | |
▎ 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.