EPA TRI Facility · Transportation Equipment
General Motors Wentzville Assembly
Wentzville, MO · Parent: General Motors LLC
- Total releases
- 2.1M lbs
- Chemicals reported
- 25
- Carcinogens
- 7
- Primary pathway
- Air Releases
AIR Form-R mix
General Motors Wentzville Assembly: how the 2.1M lbs splits
2.1M lbs across all reported pathways
- Air Releases 2.1M lbs 97.5%
- Off-site Transfers 53.7K lbs 2.5%
General Motors Wentzville Assembly's 2.1M lbs Form-R total is AIR - air releases is 97.5% of the bar. Next segment: off-site transfers at 2.5%. Leading chemical by pounds: Certain glycol ethers.
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.
HEAVY volume AIR pathway CARC-LEAN
General Motors Wentzville Assembly is an EPA Toxics Release Inventory reporter in Wentzville, MO, in the transportation equipment sector. It reported 336.7K lbs of releases across 18 chemicals in 2023, and 2.1M lbs in total across its 2019-2023 reporting years. That ranks 818 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Missouri's 491 reporting TRI sites, pounds #1 is not chemical-count #1. General Motors Wentzville Assembly is pounds #23 and chemical-count #7 at 2.1M lbs. Buick Mine/mill leads reported pounds (48.2M lbs) at 8 chemicals (chemical-count #66). Buzzi Unicem Usa-Cape Girardeau leads chemical count at 87 chemicals (904.5K lbs, pounds #44). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Superior Home Products Inc; Whisk Products Inc; Pittsburgh Glass Works LLC; True Manufacturing Co Inc. Similar-scale Transportation Equipment peers outside Missouri: Chaparral Boats Inc; Gm Truck Group Flint Assembly Plant; Ford Motor Co Dearborn Truck Plant; Fca US Warren Truck Assembly Plant. Other General Motors LLC sites in this extract: Gm Truck Group Fort Wayne Assembly; Gm Truck Group Flint Assembly Plant; Gm Mlcg Fairfax Assembly; Gmc Truck Group Arlington Assembly Plant. Largest disclosed chemicals by pounds: Certain glycol ethers; 1,2,4-Trimethylbenzene; Xylene (mixed isomers); n-Butyl alcohol.
General Motors Wentzville Assembly stamps HEAVY volume with a dominant AIR pathway (97.5% air releases) across 25 chemicals · 7 carcinogen-classified. Cumulative Form-R extract: 2.1M lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Chaparral Boats Inc and Gm Truck Group Flint Assembly Plant.
General Motors Wentzville Assembly vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
2.1M lbs Top 3% higher than 97% 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
General Motors Wentzville Assembly inside St. Charles's TRI pounds
Among the 1,603 Transportation Equipment facilities in this database, General Motors Wentzville Assembly reports the 11th-largest volume, placing it in the top 0.7% of its sector. This one site accounts for 34.4% of every pound reported in St. Charles. Scale peers outside Missouri include Chaparral Boats Inc and Gm Truck Group Flint Assembly Plant.
County-dominant here means ≥25% of St. Charles's reported pounds (6.2M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- General Motors Wentzville Assembly's total reported releases fell from 349.6 thousand lb in 2022 to 336.7 thousand lb in 2023, based on EPA TRI filings.
- General Motors Wentzville Assembly's off-site transfers fell from 9.5 thousand lb in 2022 to 8.4 thousand lb in 2023, based on EPA TRI filings.
- General Motors Wentzville Assembly's chemicals reported fell from 20 in 2022 to 18 in 2023, based on EPA TRI filings.
- General Motors Wentzville Assembly's air releases fell from 340.0 thousand lb in 2022 to 328.4 thousand lb in 2023, based on EPA TRI filings.
General Motors Wentzville Assembly Form-R facts
Compare this facility
See how General Motors Wentzville Assembly stacks up against nearby facilities and the typical reporter.
23.5× more than the comparison
25.0× 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 Wentzville Assembly releases toxic chemicals into the environment. Total: 2.1M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 36% (527.0K lbs to 336.7K lbs).
General Motors Wentzville Assembly: annual Form-R pounds
HEAVY site · AIR pathway · TRI years 2019–2023
- 2019
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows General Motors Wentzville Assembly year-over-year reported totals (decreased by 36% 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: Certain glycol ethers.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 527.0K lbs | 23 |
| 2020 | 464.1K lbs | 19 |
| 2021 | 462.6K lbs | 20 |
| 2022 | 349.6K lbs | 20 |
| 2023 | 336.7K lbs | 18 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 7 of 25 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Certain glycol ethers | 513.6K lbs | - |
| 1,2,4-Trimethylbenzene | 464.7K lbs | - |
| Xylene (mixed isomers) | 337.8K lbs | - |
| n-Butyl alcohol | 203.6K lbs | - |
| Methyl isobutyl ketone | 148.6K lbs | Carcinogen |
| Cumene | 139.8K lbs | Carcinogen |
| Ethylbenzene | 90.5K lbs | Carcinogen |
| Methanol | 57.3K lbs | - |
| Toluene | 45.9K lbs | - |
| Naphthalene | 45.4K lbs | Carcinogen |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 20.1K lbs | - |
| Zinc compounds | 17.0K lbs | - |
| Dichloromethane | 15.0K lbs | Carcinogen |
| N-Methyl-2-pyrrolidone | 12.7K lbs | - |
| n-Hexane | 11.5K lbs | - |
| Benzene | 6.6K lbs | Carcinogen |
| Ammonia | 5.4K lbs | - |
| Manganese compounds | 3.7K lbs | - |
| Ethylene glycol | 478 lbs | - |
| Copper | 306 lbs | - |
| Cyclohexane | 2 lbs | - |
| Polycyclic aromatic compounds | 1 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
| Sodium nitrite | 0 lbs | - |
| Nitric acid | 0 lbs | - |
General Motors Wentzville Assembly · AIR-pathway site
Nearest TRI Facilities to General Motors Wentzville Assembly
Closest other reporters in Missouri - including Superior Home Products Inc, Whisk Products Inc, Pittsburgh Glass Works LLC, ordered by distance.
Showing 8 of 490 other reporting facilities in Missouri.
Similar Transportation Equipment Facilities
Other Transportation Equipment facilities with similar total release volumes (±80%), outside Missouri - e.g. Chaparral Boats Inc, Gm Truck Group Flint Assembly Plant, Ford Motor Co Dearborn Truck Plant.
Compare beyond Missouri
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest General Motors Wentzville Assembly on cumulative reported pounds (2.1M lbs) and distinct chemical count (25). Release-pound peers include Monroe Energy Llc-Trainer Refinery, Panther Creek Power Operating LLC, Trecora Wax LLC. Chemical-count peers include Aes Puerto Rico LP, Verso Luke LLC, Virginia City Hybrid Energy Center. 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.
- Monroe Energy Llc-Trainer Refinery Trainer, PA · Petroleum 2.1M lbs reported
- Panther Creek Power Operating LLC Nesquehoning, PA · Electric Utilities 2.1M lbs reported
- Trecora Wax LLC Pasadena, TX · Chemicals 2.1M lbs reported
- Carfair Composites USA Inc - Anniston Anniston, AL · Plastics and Rubber 2.2M lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other General Motors LLC Facilities
Same-parent TRI sites ranked by reported releases - including Gm Truck Group Fort Wayne Assembly, Gm Truck Group Flint Assembly Plant, Gm Mlcg Fairfax Assembly.
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 Certain glycol ethers, 1,2,4-Trimethylbenzene, Xylene (mixed isomers), n-Butyl alcohol; nearby reporters include Superior Home Products Inc. General Motors Wentzville Assembly stamps HEAVY volume · AIR pathway · CARC-LEAN 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 General Motors Wentzville Assembly TRI extract (HEAVY · AIR · CARC-LEAN · lead Certain glycol ethers) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
General Motors Wentzville Assembly totals are self-reported EPCRA §313 estimates for Wentzville, MO, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 336112 · Transportation Equipment. 34.4% of St. Charles TRI pounds in this extract. Nearest ABS peer: Monroe Energy Llc-Trainer Refinery (Δ 4.2K lbs). Pounds ≠ exposure.
General Motors Wentzville Assembly stamps HEAVY volume · AIR pathway · CARC-LEAN · lead Certain glycol ethers. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. 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