Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV TUBOSCOPE WEST LITTLE YORK COATING
12100 W LITTLE YORK RD, HOUSTON, TX, 77041
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 | n-Butyl alcohol | Certain glycol ethers | Methyl ethyl ketone | Methyl isobutyl ketone | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) |
| 2013 | 2,584 | — | — | — | — | 2,584 |
| 2012 | 1,586 | — | — | 1,054 | — | 3,225 |
| 2011 | 794 | — | — | — | — | 794 |
| 2010 | 7,634 | — | — | 2,005 | — | 11,283 |
| 2009 | 8,542 | 2,927 | — | 1,984 | — | 14,750 |
| 2008 | 9,416 | 5,024 | — | 1,370 | — | 16,310 |
| 2007 | 6,210 | 157 | — | 1,175 | — | 8,057 |
| 2006 | 37,850 | — | — | — | — | 37,850 |
| 2005 | 1,500 | — | — | — | — | 1,500 |
| 2003 | — | — | 13,194 | — | — | 13,194 |
| 2002 | 3,755 | — | 13,893 | — | — | 17,648 |
| 2001 | 441 | — | 473 | — | — | 914 |
| 2000 | 2,843 | — | 358 | — | — | 3,201 |
| 1999 | 3,871 | — | 254 | — | — | 4,125 |
| 1998 | 17,180 | 15,840 | 210 | — | — | 33,230 |
| 1997 | 7,179 | 3,312 | 7,179 | — | — | 17,670 |
| 1996 | 2,606 | 17,000 | 444 | — | — | 20,050 |
| 1995 | 8,956 | 14,072 | 2,251 | 4,290 | — | 29,569 |
| 1993 | 21,750 | — | 2,040 | — | — | 23,790 |
| 1992 | — | — | 4,696 | — | — | 4,696 |
| 1991 | — | — | 250 | — | — | 250 |
| 1990 | — | — | 250 | — | — | 250 |
| 1989 | — | — | 250 | — | 5,490 | 5,740 |
▎ 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.