Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV HYDRA RIG FORT WORTH
1020 EVERMAN PKWY, FORT WORTH, TX, 76140
Parent company: NATIONAL OILWELL VARCO LP
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 | Xylene (mixed isomers) | Total (lbs) | |||
| 2015 | 6,993 | — | 6,993 | |||
| 2014 | 2,362 | — | 2,362 | |||
| 2013 | 14,213 | 6,643 | 20,856 | |||
| 2012 | 12,935 | 9,973 | 22,908 | |||
| 2011 | 10,549 | 10,333 | 20,882 | |||
▎ 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.