Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HEXION INC
10915 N LOMBARD ST, PORTLAND, OR, 97203
Parent company: HEXION HOLDINGS CORP
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 | Certain glycol ethers | 1,1,1-Trichloroethane | Total (lbs) | |||
| 2023 | 1 | — | 1 | |||
| 2022 | 1 | — | 1 | |||
| 2021 | 2 | — | 2 | |||
| 2020 | 2 | — | 2 | |||
| 2002 | 500 | — | 500 | |||
| 2001 | 500 | — | 500 | |||
| 2000 | 500 | — | 500 | |||
| 1999 | 500 | — | 500 | |||
| 1998 | 500 | — | 500 | |||
| 1997 | 500 | — | 500 | |||
| 1996 | 500 | — | 500 | |||
| 1995 | 500 | — | 500 | |||
| 1994 | 500 | — | 500 | |||
| 1993 | 500 | — | 500 | |||
| 1992 | 255 | — | 255 | |||
| 1989 | — | 40 | 40 | |||
▎ 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.