EPA TRI Facility · Computers and Electronic Products
Onsemi
Gresham, OR · Parent: Semiconductor Components Industries LLC
- Total releases
- 759.9K lbs
- Chemicals reported
- 10
- Carcinogens
- 1
- Primary pathway
- Air Releases
MIXED Form-R mix
Onsemi: how the 759.9K lbs splits
759.9K lbs across all reported pathways
- Air Releases 519.3K lbs 68.3%
- Off-site Transfers 240.5K lbs 31.7%
Onsemi's 759.9K lbs Form-R total is MIXED - air releases is 68.3% of the bar. Next segment: off-site transfers at 31.7%. Leading chemical by pounds: Ammonia.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
MID volume MIXED pathway TRACE-CARC
Onsemi is an EPA Toxics Release Inventory reporter in Gresham, OR, in the computers and electronic products sector. It reported 128.9K lbs of releases across 9 chemicals in 2023, and 759.9K lbs in total across its 2019-2023 reporting years. That ranks 1,535 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Oregon's 285 reporting TRI sites, pounds #1 is not chemical-count #1. Onsemi is pounds #17 and chemical-count #15 at 759.9K lbs. Dyno Nobel- St.helens Plant leads reported pounds (32.0M lbs) at 6 chemicals (chemical-count #39). Chemical Waste Management of the Northwest Inc. leads chemical count at 56 chemicals (15.6M lbs, pounds #2). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Willamette Graystone - Wood Village Or Paver Plan; Microchip Technology Inc; Glacier Northwest Inc Troutdale Ready Mix Plant; Cascade Corp. Similar-scale Computers and Electronic Products peers outside Oregon: Globalfoundries Fab 8; Globalfoundries U.S. 2 LLC - Vermont Facility; Amphenol Corp; Texas Instruments Inc. Other Semiconductor Components Industries LLC sites in this extract: Onsemi. Largest disclosed chemicals by pounds: Ammonia; Nitrate compounds (water dissociable; reportable only when in aqueous solution); Ozone; Hydrogen fluoride.
Onsemi is a MID · MIXED-pathway Form-R site in Gresham, OR: 759.9K lbs across 10 chemicals (1 carcinogen-classified, TRACE-CARC). No single media clears 70% of the bar (lead segment air releases at 68.3%). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Globalfoundries Fab 8 and Globalfoundries U.S. 2 LLC - Vermont Facility.
Onsemi vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
760K lbs Top 6% higher than 94% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Onsemi in the Computers and Electronic Products sector extract
Among the 760 Computers and Electronic Products facilities in this database, Onsemi reports the 10th-largest volume, placing it in the top 1.3% of its sector. Scale peers outside Oregon include Globalfoundries Fab 8 and Globalfoundries U.S. 2 LLC - Vermont Facility.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Onsemi's total reported releases fell from 149.0 thousand lb in 2022 to 128.9 thousand lb in 2023, based on EPA TRI filings.
- Onsemi's air releases fell from 99.7 thousand lb in 2022 to 83.2 thousand lb in 2023, based on EPA TRI filings.
- Onsemi's chemicals reported fell from 10 in 2022 to 9 in 2023, based on EPA TRI filings.
- Onsemi's off-site transfers fell from 49.3 thousand lb in 2022 to 45.8 thousand lb in 2023, based on EPA TRI filings.
Onsemi Form-R facts
Compare this facility
See how Onsemi stacks up against nearby facilities and the typical reporter.
3623625.9× more than the comparison
10.0× more than the comparison
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 Onsemi releases toxic chemicals into the environment. Total: 759.9K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 23% (167.2K lbs to 128.9K lbs).
Onsemi: annual Form-R pounds
MID site · MIXED pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Onsemi year-over-year reported totals (decreased by 23% from 2019 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Ammonia.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 167.2K lbs | 10 |
| 2020 | 160.8K lbs | 10 |
| 2021 | 154.0K lbs | 10 |
| 2022 | 149.0K lbs | 10 |
| 2023 | 128.9K lbs | 9 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 10 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 381.5K lbs | - |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 186.5K lbs | - |
| Ozone | 79.4K lbs | - |
| Hydrogen fluoride | 51.8K lbs | - |
| Copper compounds | 27.9K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 16.8K lbs | - |
| Nitric acid | 12.1K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2.5K lbs | - |
| Catechol | 717 lbs | Carcinogen |
| Fluorine | 674 lbs | - |
Onsemi in Multnomah
Nearest TRI Facilities to Onsemi
Closest other reporters in Oregon - including Willamette Graystone - Wood Village Or Paver Plan, Microchip Technology Inc, Glacier Northwest Inc Troutdale Ready Mix Plant, ordered by distance.
Showing 8 of 284 other reporting facilities in Oregon.
Similar Computers and Electronic Products Facilities
Other Computers and Electronic Products facilities with similar total release volumes (±80%), outside Oregon - e.g. Globalfoundries Fab 8, Globalfoundries U.S. 2 LLC - Vermont Facility, Amphenol Corp.
Compare beyond Oregon
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Onsemi on cumulative reported pounds (759.9K lbs) and distinct chemical count (10). Release-pound peers include Basf Corp, Hill Generating Station, Barrier Reef Pools. Chemical-count peers include Harris Paints Corp., Saint Thomas Bulk Terminal, Total Guaynabo Bulk Terminal. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Basf Corp Seneca, SC · Primary Metals 759.6K lbs reported
- Hill Generating Station Hilo, HI · Electric Utilities 760.3K lbs reported
- Barrier Reef Pools Timmonsville, SC · Transportation Equipment 759.1K lbs reported
- Ball Metal Beverage Container Corp Saratoga Springs, NY · Fabricated Metals 758.9K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Semiconductor Components Industries LLC Facilities
Same-parent TRI sites ranked by reported releases - including Onsemi.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ozone, Hydrogen fluoride; nearby reporters include Willamette Graystone - Wood Village Or Paver Plan. Onsemi stamps MID volume · MIXED pathway · TRACE-CARC carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Onsemi TRI extract (MID · MIXED · TRACE-CARC · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Onsemi totals are self-reported EPCRA §313 estimates for Gresham, OR, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 334413 · Computers and Electronic Products. 10.0% of Multnomah TRI pounds in this extract. Nearest ABS peer: Basf Corp (Δ 228 lbs). Pounds ≠ exposure.
Onsemi stamps MID · MIXED pathway (air releases leads at 68.3%). Pipeline-rendered EPA Form-R only - no editor-typed pounds. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov