EPA TRI Facility · Chemicals
Hexion Inc
Portland, OR · Parent: Hexion Holdings Corp
- Total releases
- 531 lbs
- Chemicals reported
- 1
- Latest report
- 2023
- Primary pathway
- Off-site Transfers
Hexion Inc has reported 531 lbs of toxic releases across 1 chemical to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. The facility operates in the Chemicals sector. The primary release pathway is off-site transfers, accounting for 99% of total releases. All release data shown below is self-reported to the EPA under the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 313.
Hexion Inc files annual Form R disclosures to the EPA Toxics Release Inventory under EPCRA Section 313, classified under NAICS 325520 (Chemicals). Across 4 years of records spanning 2020–2023, the site has disclosed 531 lbs in cumulative toxic releases across 1 distinct chemical.
The dominant release pathway is off-site transfers at 526 lbs (99.0% of total volume), followed by air releases at 1.0%. Between 2020 and 2023, reported totals increased by 15% - from 124 lbs to 143 lbs. The facility is operated under parent company Hexion Holdings Corp.
TRI Form R values are self-reported estimates, not measured stack emissions, and treat every pound of reported chemical equally regardless of toxicity. Inclusion in the TRI database does not establish a health risk to nearby residents; it documents the annual reporting record that Hexion Inc has filed with the EPA under federal community right-to-know requirements.
Quick Facts
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Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Hexion Inc releases toxic chemicals into the environment. Total: 531 lbs.
Emissions Trend Summary
From 2020 to 2023, total releases increased by 15% (124 lbs to 143 lbs).
Reported total releases by year
Hexion Inc - annual TRI totals
- 2020 0
2020
0 million lbs
- 2021 0
2021
0 million lbs
- 2022 0
2022
0 million lbs
- 2023 0
2023
0 million lbs
What this shows Year-over-year reported totals. TRI figures are self-reported estimates and can swing with production levels, waste-rock handling and reporting changes, not only with emissions controls.
| Year | Total | Chemicals |
|---|---|---|
| 2020 | 124 lbs | 1 |
| 2021 | 126 lbs | 1 |
| 2022 | 137 lbs | 1 |
| 2023 | 143 lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2020–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Certain glycol ethers | 531 lbs | - |
Location
Other Facilities in Oregon
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
Data comes from the EPA Toxic Release Inventory (TRI) program. Facilities that manufacture, process, or otherwise use listed toxic chemicals above threshold amounts are required to report annually to the EPA.
Release quantities are self-reported by the facility and may represent estimates rather than exact measurements. "Total releases" includes releases to air, water, land, and off-site transfers for disposal. Quantities shown here are aggregated across all available reporting years.
PlainEnviro presents this data without advocacy framing. The presence of a facility in the TRI database does not by itself indicate a health risk. For site-specific health questions, consult your local environmental or health agency.
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Explore More Data for Oregon
What to do with this facility's data
Use this facility profile as a starting point, then check how it compares.
- See whether releases reported by Hexion Inc are rising or falling over time. View trends
- This facility ranks #14,711 of 25,902 TRI facilities nationwide by total reported releases. Ranking reflects reported pounds, not toxicity or health risk. See the full rankings
- Check Oregon's statewide profile for the full picture: total facilities, water systems, and Superfund sites. View Oregon profile
TRI release totals are self-reported estimates submitted to the EPA, not independently measured stack emissions; a high rank reflects reported volume, not necessarily local health risk.
Read our methodology - how this data is sourced, computed, and verified.
Related
Sources & how this page was built
Every figure on this page traces to public, federal-government data on Hexion Inc. The records below are the primary sources; our methodology explains how they are joined, computed, and verified.
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program, chemical & reporting reference - what each chemical is and how releases are counted. epa.gov
- EPA Facility Registry Service (FRS) - authoritative facility location and identity. epa.gov
- EPA Enforcement & Compliance History Online (ECHO) - regulatory and compliance context. echo.epa.gov
- EPA Envirofacts - the EPA data warehouse that exposes these datasets. enviro.epa.gov
Retrieved and formatted by PlainEnviro Editorial. TRI release totals are self-reported estimates, not measured stack emissions.
According to the U.S. Environmental Protection Agency, the Toxics Release Inventory has required annual industrial disclosure since its creation under the Emergency Planning and Community Right-to-Know Act in October 1986, and this facility's record is drawn from PlainEnviro's database of more than 25,000 EPA-tracked facilities through the 2023 reporting year; see our methodology for full source citations and refresh cadence.