Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV TUBOSCOPE HIGHWAY 90
8600 PINELAND DR, HOUSTON, TX, 77044
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 | Methyl ethyl ketone | n-Butyl alcohol | Methyl isobutyl ketone | Xylene (mixed isomers) | Toluene | Total (lbs) |
| 2014 | — | 1,725 | 722 | — | 685 | 3,132 |
| 2013 | — | 2,592 | 1,070 | — | 1,030 | 4,692 |
| 2012 | — | 2,915 | 1,222 | — | 1,184 | 5,321 |
| 2011 | — | 3,001 | 1,196 | — | 1,182 | 5,379 |
| 2009 | — | 4,648 | 2,638 | — | 2,531 | 9,818 |
| 2008 | — | 9,552 | 4,162 | — | 4,094 | 17,808 |
| 2007 | — | 3,021 | 1,550 | — | 1,500 | 6,071 |
| 2006 | — | 70,750 | 32,750 | — | 32,250 | 135,750 |
| 2005 | — | 111,400 | 36,000 | — | — | 147,400 |
| 2004 | — | 19,021 | — | — | — | 19,021 |
| 2003 | 30,216 | — | — | — | — | 30,216 |
| 2002 | 34,518 | 14,826 | 8,460 | — | — | 57,804 |
| 2001 | 20,278 | 18,199 | 9,448 | — | 9,214 | 57,139 |
| 2000 | 20,228 | 14,252 | 4,954 | — | — | 39,434 |
| 1999 | 22,700 | 13,300 | — | — | — | 36,000 |
| 1998 | 29,600 | 24,000 | 11,400 | — | 11,000 | 76,000 |
| 1997 | 32,523 | 24,574 | 12,950 | 24,123 | 18,359 | 112,529 |
| 1996 | 78,925 | 20,746 | 12,319 | 37,181 | 20,316 | 169,487 |
| 1995 | 80,528 | 15,101 | 10,862 | 24,494 | 14,409 | 152,777 |
| 1994 | 26,037 | 10,973 | 6,082 | 56,832 | 23,834 | 123,758 |
| 1993 | 69,737 | 22,756 | 647 | — | — | 108,538 |
| 1992 | 7,680 | 2,620 | 750 | — | — | 13,994 |
| 1991 | 1,213 | 3,354 | 1,213 | — | — | 9,959 |
| 1990 | 5,405 | 3,635 | 654 | — | — | 11,800 |
| 1989 | 8,014 | 5,318 | 707 | — | — | 21,226 |
| 1988 | — | 3,013 | 808 | — | — | 3,821 |
| 1987 | 6,515 | 2,606 | — | — | — | 9,121 |
▎ 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.