Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
GEOPHYSICAL RESEARCH CORP
6540 EAST APACHE ST, TULSA, OK, 74115
Parent company: NA
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Trichloroethylene | 1,1,1-Trichloroethane | Total |
|---|---|---|---|
| 2000 | 5,368 | — | 5,368 |
| 1998 | 6,710 | — | 6,710 |
| 1997 | 10,065 | — | 10,065 |
| 1995 | 10,737 | — | 10,737 |
| 1994 | 10,737 | — | 10,737 |
| 1993 | 14,100 | — | 14,100 |
| 1991 | — | 15,800 | 15,800 |
| 1990 | — | 9,185 | 9,185 |
| 1989 | — | 7,300 | 7,300 |
| 1988 | — | 6,413 | 6,413 |