EPA TRI Facility · Transportation Equipment
General Motors LLC Orion Assembly Center
Lake Orion, MI · Parent: General Motors LLC
- Total releases
- 228.4K lbs
- Chemicals reported
- 9
- Carcinogens
- 2
- Primary pathway
- Air Releases
General Motors LLC Orion Assembly Center is an EPA Toxics Release Inventory reporter in Lake Orion, MI, in the transportation equipment sector. It reported 33.3K lbs of releases across 7 chemicals in 2023, and 228.4K lbs in total across its 2019-2023 reporting years. That ranks 3,051 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk.
General Motors LLC Orion Assembly Center has reported 228.4K lbs of toxic releases across 9 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. Of the chemicals reported, 2 are classified as carcinogens, representing 22% of the facility's chemical profile. The facility operates in the Transportation Equipment sector. The primary release pathway is air releases, accounting for 95% 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.
Where this facility sits in the TRI record
Among the 1,603 Transportation Equipment facilities in this database, General Motors LLC Orion Assembly Center reports the 169th-largest volume, placing it in the top 10.5% of its sector. Carcinogen-classified chemicals make up 54.9% of the reported pounds, not just of the chemical count.
Placement is computed from reported TRI pounds in this database. Thresholds are fixed across every facility page: concentrated ≥60% of volume in one chemical, county-dominant ≥25% of the county total, carcinogen-heavy ≥50% of pounds. Share-based statements are shown only for sites reporting at least 1,000 lbs, because a share of a very small total is not a meaningful signal. Reported pounds are self-reported estimates and do not measure toxicity or health risk.
General Motors LLC Orion Assembly Center files annual Form R disclosures to the EPA Toxics Release Inventory under EPCRA Section 313, classified under NAICS 336111 (Transportation Equipment). Across 5 years of records spanning 2019–2023, the site has disclosed 228.4K lbs in cumulative toxic releases across 9 distinct chemicals, 2 of which (22%) carry a carcinogenic classification.
The dominant release pathway is air releases at 217.5K lbs (95.2% of total volume), followed by off-site transfers at 4.8%. Between 2019 and 2023, reported totals decreased by 30% - from 47.4K lbs to 33.3K lbs. The facility is operated under parent company General Motors LLC.
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 General Motors LLC Orion Assembly Center has filed with the EPA under federal community right-to-know requirements.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- General Motors LLC Orion Assembly Center's total reported releases fell from 53.8 thousand lb in 2022 to 33.3 thousand lb in 2023, based on EPA TRI filings.
- General Motors LLC Orion Assembly Center's off-site transfers fell from 1.5 thousand lb in 2022 to 804 lb in 2023, based on EPA TRI filings.
- General Motors LLC Orion Assembly Center's air releases fell from 52.3 thousand lb in 2022 to 32.5 thousand lb in 2023, based on EPA TRI filings.
- General Motors LLC Orion Assembly Center's chemicals reported rose from 6 in 2022 to 7 in 2023, based on EPA TRI filings.
Quick Facts
Compare this facility
See how General Motors LLC Orion Assembly Center stacks up against nearby facilities and the typical reporter.
38073.2× more than the comparison
3.0× 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 General Motors LLC Orion Assembly Center releases toxic chemicals into the environment. Total: 228.4K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 30% (47.4K lbs to 33.3K lbs).
Reported total releases by year
General Motors LLC Orion Assembly Center - annual TRI totals
- 2019 0
2019
0 million lbs
- 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 |
|---|---|---|
| 2019 | 47.4K lbs | 7 |
| 2020 | 33.6K lbs | 6 |
| 2021 | 60.3K lbs | 5 |
| 2022 | 53.8K lbs | 6 |
| 2023 | 33.3K lbs | 7 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 2 of 9 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Formaldehyde | 125.3K lbs | Carcinogen |
| Certain glycol ethers | 51.9K lbs | - |
| N-Methyl-2-pyrrolidone | 19.3K lbs | - |
| n-Butyl alcohol | 11.4K lbs | - |
| 1,2,4-Trimethylbenzene | 9.9K lbs | - |
| Ethylene glycol | 6.9K lbs | - |
| Toluene | 2.0K lbs | - |
| Xylene (mixed isomers) | 1.6K lbs | - |
| Methyl isobutyl ketone | 85 lbs | Carcinogen |
Location
Nearest TRI Facilities to General Motors LLC Orion Assembly Center
The closest other reporting facilities in Michigan, ordered by distance.
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.
Frequently Asked Questions
What chemicals does General Motors LLC Orion Assembly Center release? ▼
What industry is General Motors LLC Orion Assembly Center in? ▼
How long has General Motors LLC Orion Assembly Center reported to the TRI? ▼
How does General Motors LLC Orion Assembly Center release toxic chemicals? ▼
Are emissions from General Motors LLC Orion Assembly Center increasing or decreasing? ▼
Is General Motors LLC Orion Assembly Center a health risk? ▼
Does General Motors LLC Orion Assembly Center release carcinogens? ▼
Explore More Data for Michigan
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 General Motors LLC Orion Assembly Center are rising or falling over time. View trends
- This facility ranks #3,051 of 25,986 TRI facilities nationwide by total reported releases. Ranking reflects reported pounds, not toxicity or health risk. See the full rankings
- Check Michigan's statewide profile for the full picture: total facilities, water systems, and Superfund sites. View Michigan 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 General Motors LLC Orion Assembly Center. 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. 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.