Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV TUBOSCOPE EDMOND COATING
3600 S KELLY, EDMOND, OK, 73013
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 | Barium | Methyl ethyl ketone | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Methyl isobutyl ketone | Total (lbs) |
| 2008 | 12,070 | — | — | — | — | 12,070 |
| 2007 | 20,184 | — | — | — | — | 20,184 |
| 1992 | 1,000 | — | 1,695 | 500 | 250 | 3,445 |
| 1991 | 1,757 | — | 500 | 255 | 250 | 2,762 |
| 1990 | 1,402 | — | 1,875 | — | — | 3,277 |
| 1989 | 1,370 | 3,544 | 1,704 | — | — | 6,618 |
| 1988 | — | 5,636 | 2,077 | — | — | 7,713 |
| 1987 | — | 11,800 | — | — | — | 11,800 |
▎ 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.