Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV WILCO
1326 S BROADWAY, MARLOW, OK, 73055
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 | Xylene (mixed isomers) | Toluene | Methyl ethyl ketone | Zinc (fume or dust) | Manganese | Total (lbs) |
| 2019 | — | — | — | — | — | 18 |
| 2018 | 795 | — | — | 709 | 134 | 1,895 |
| 2015 | — | — | — | — | 5 | 5 |
| 2014 | 11,233 | — | — | — | 18 | 11,261 |
| 2013 | 11,172 | — | — | — | 21 | 11,203 |
| 2012 | 12,102 | — | — | — | 62 | 12,210 |
| 2011 | 17,659 | 11,020 | — | — | 89 | 28,846 |
| 2010 | — | 9,892 | — | — | 35 | 9,934 |
| 2009 | — | 8,752 | — | — | — | 8,759 |
| 2008 | — | 10,059 | — | — | — | 10,066 |
| 2007 | — | 8,970 | — | — | — | 8,970 |
| 2006 | — | 3,244 | — | — | — | 3,249 |
| 2005 | — | — | — | — | — | 3 |
| 2003 | — | — | 8,409 | — | — | 8,409 |
| 2002 | — | — | 6,190 | — | — | 6,190 |
▎ 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.