EPA TRI Facility · Chemicals
Exxonmobil Mont Belvieu Plastics Plant
Baytown, TX · Parent: Exxon Mobil Corp
- Total releases
- 767.3K lbs
- Chemicals reported
- 5
- Latest report
- 2023
- Primary pathway
- Air Releases
Reported-total composition
How the reported total is distributed
767.3K lbs across all reported pathways
- Air Releases 716.8K lbs 93.4%
- Off-site Transfers 49.3K lbs 6.4%
- Water Discharges 1.2K lbs 0.2%
- Land Disposal 0 lbs <0.1%
The segments reconcile to the cumulative total shown above. Off-site transfers are shown separately from releases to air, water, and land.
MID volume AIR pathway CLEAN
Exxonmobil Mont Belvieu Plastics Plant is an EPA Toxics Release Inventory reporter in Baytown, TX, in the chemicals sector. It reported 145.7K lbs of releases across 4 chemicals in 2023, and 767.3K lbs in total across its 2019-2023 reporting years. That ranks 1,528 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Texas's 2,016 reporting TRI sites, pounds #1 is not chemical-count #1. Exxonmobil Mont Belvieu Plastics Plant is pounds #158 and chemical-count #613 at 767.3K lbs. Ascend Performance Materials-Chocolate Bayou Plant leads reported pounds (94.0M lbs) at 36 chemicals (chemical-count #35). Veolia Es Technical Solutions LLC Port Arthur Facility leads chemical count at 246 chemicals (1.5M lbs, pounds #112). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Chemicals Inc; Enterprise Products Operating LLC; Mb Frac I II & III; Mont Belvieu Fractionator. Similar-scale Chemicals peers outside Texas: Daikin America Inc; Celanese Emulsions Enoree Plant; M. Argueso & Co. Inc. (d.b.a. Paramelt); Arkema Inc. Other Exxon Mobil Corp sites in this extract: Exxonmobil Refining & Supply Baytown Refinery (part); Exxonmobil Baton Rouge Chemical Plant (part); Exxonmobil Baton Rouge Refinery (part); Exxonmobil Oil Corp Joliet Refinery. Largest disclosed chemicals by pounds: Ethylene; n-Hexane; Toluene; Zinc compounds.
Exxonmobil Mont Belvieu Plastics Plant has reported 767.3K lbs of toxic releases across 5 chemicals 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 air releases, accounting for 93% 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.
Exxonmobil Mont Belvieu Plastics Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
767K 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
Where this facility sits in the TRI record
Among the 3,917 Chemicals facilities in this database, Exxonmobil Mont Belvieu Plastics Plant reports the 311th-largest volume, placing it in the top 7.9% of its sector. Its reported volume is concentrated rather than spread: Ethylene alone is 62.0% of the total.
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.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Exxonmobil Mont Belvieu Plastics Plant's total reported releases rose from 141.6 thousand lb in 2022 to 145.7 thousand lb in 2023, based on EPA TRI filings.
- Exxonmobil Mont Belvieu Plastics Plant's off-site transfers fell from 10.9 thousand lb in 2022 to 136 lb in 2023, based on EPA TRI filings.
- Exxonmobil Mont Belvieu Plastics Plant's water releases fell from 322 lb in 2022 to 272 lb in 2023, based on EPA TRI filings.
- Exxonmobil Mont Belvieu Plastics Plant's air releases rose from 130.4 thousand lb in 2022 to 145.3 thousand lb in 2023, based on EPA TRI filings.
Quick Facts
Compare this facility
See how Exxonmobil Mont Belvieu Plastics Plant stacks up against nearby facilities and the typical reporter.
2949.1× more than the comparison
50% less 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 Exxonmobil Mont Belvieu Plastics Plant releases toxic chemicals into the environment. Total: 767.3K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 4% (139.6K lbs to 145.7K lbs).
Reported total releases by year
Exxonmobil Mont Belvieu Plastics Plant - annual TRI totals
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
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 | 139.6K lbs | 5 |
| 2020 | 177.5K lbs | 5 |
| 2021 | 162.9K lbs | 5 |
| 2022 | 141.6K lbs | 4 |
| 2023 | 145.7K lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ethylene | 475.8K lbs | - |
| n-Hexane | 215.1K lbs | - |
| Toluene | 38.8K lbs | - |
| Zinc compounds | 37.6K lbs | - |
| Nonylphenol | 1 lbs | - |
Location
Nearest TRI Facilities to Exxonmobil Mont Belvieu Plastics Plant
Closest other reporters in Texas - including Chemicals Inc, Enterprise Products Operating LLC, Mb Frac I II & III, ordered by distance.
Showing 8 of 2,015 other reporting facilities in Texas.
Similar Chemicals Facilities
Other Chemicals facilities with similar total release volumes (±80%), outside Texas - e.g. Daikin America Inc, Celanese Emulsions Enoree Plant, M. Argueso & Co. Inc. (d.b.a. Paramelt).
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Exxonmobil Mont Belvieu Plastics Plant on cumulative reported pounds (767.3K lbs) and distinct chemical count (5). Release-pound peers include U.S. Marine Corps Base Quantico (entire Facility), Oregon Tool Inc., Real Alloy Recycling LLC. Chemical-count peers include Abbvie Ltd, Lilly del Caribe Inc Carolin A, Baxter Healthcare of Puerto Rico LLC. 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.
- U.S. Marine Corps Base Quantico (entire Facility) Quantico, VA · Other 767.8K lbs reported
- Oregon Tool Inc. Kansas City, MO · Machinery 769.2K lbs reported
- Real Alloy Recycling LLC Wabash, IN · Primary Metals 769.5K lbs reported
- Grede LLC - Iron Mountain Kingsford, MI · Primary Metals 764.6K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Exxon Mobil Corp Facilities
Same-parent TRI sites ranked by reported releases - including Exxonmobil Refining & Supply Baytown Refinery (part), Exxonmobil Baton Rouge Chemical Plant (part), Exxonmobil Baton Rouge Refinery (part).
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 Ethylene, n-Hexane, Toluene, Zinc compounds; nearby reporters include Chemicals Inc. Exxonmobil Mont Belvieu Plastics Plant stamps MID volume · AIR pathway · CLEAN 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 Exxonmobil Mont Belvieu Plastics Plant record combines EPA TRI filings, facility identity, and compliance context without turning reported releases into a health-risk rating.
TRI release totals are self-reported estimates, not measured stack emissions. The methodology explains how records are joined, computed, and refreshed.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.
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