Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
RHONE-POULENC AG CO
6200 NW ST HELENS RD, PORTLAND, OR, 972100224
Parent company: RHONE-POULENC INC
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 | Xylene (mixed isomers) | 1,2,4-Trimethylbenzene | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ethylbenzene | Total (lbs) | |
| 1990 | 5,395 | 3,906 | 1,421 | 854 | 11,576 | |
| 1989 | 6,589 | 3,140 | 1,446 | 983 | 12,158 | |
| 1988 | 8,459 | — | 1,630 | — | 10,089 | |
| 1987 | — | — | 1,595 | — | 1,595 | |
▎ 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.