EPA TRI Facility · Petroleum
Ultramar Inc Wilmington Refinery
Wilmington, CA · Parent: Valero Energy Corp
- Total releases
- 762.5K lbs
- Chemicals reported
- 37
- Carcinogens
- 12
- Primary pathway
- Air Releases
AIR Form-R mix
Ultramar Inc Wilmington Refinery: how the 762.5K lbs splits
762.5K lbs across all reported pathways
- Air Releases 724.7K lbs 95.0%
- Off-site Transfers 37.4K lbs 4.9%
- Water Discharges 353 lbs <0.1%
- Land Disposal 0 lbs <0.1%
Ultramar Inc Wilmington Refinery's 762.5K lbs Form-R total is AIR - air releases is 95.0% of the bar. Next segment: off-site transfers at 4.9%. 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 AIR pathway CARC-LEAN
Ultramar Inc Wilmington Refinery is an EPA Toxics Release Inventory reporter in Wilmington, CA, in the petroleum sector. It reported 153.5K lbs of releases across 32 chemicals in 2023, and 762.5K lbs in total across its 2019-2023 reporting years. That ranks 1,533 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In California's 1,149 reporting TRI sites, pounds #1 is not chemical-count #1. Ultramar Inc Wilmington Refinery is pounds #32 and chemical-count #7 at 762.5K lbs. Clean Harbors Buttonwillow LLC leads reported pounds (50.4M lbs) at 45 chemicals (chemical-count #2). Chevron Products Co Richmond Refinery leads chemical count at 46 chemicals (3.0M lbs, pounds #13). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Hj Baker & Bro LLC; Tesoro Wilmington Calciner; Clean Harbors Wilmington LLC; Air Products & Chemicals Inc.. Similar-scale Petroleum peers outside California: Marathon Petroleum Co LP - Michigan Refining Div; Port Hamilton Refining & Transportation Lllp; Valero Refining Co -Oklahoma Valero Ardmore Refinery; Tesoro Refining & Marketing Co LLC. Other Valero Energy Corp sites in this extract: Valero Refining - Texas L.P. Houston Refinery; Valero Refining-Texas LP; Diamond Shamrock Refining Co LP; Valero Refining-Texas LP Corpus Christi West Plant. Largest disclosed chemicals by pounds: Ammonia; Hydrogen cyanide; Hydrogen sulfide; n-Hexane.
Ultramar Inc Wilmington Refinery stamps MID volume with a dominant AIR pathway (95.0% air releases) across 37 chemicals · 12 carcinogen-classified. Cumulative Form-R extract: 762.5K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Marathon Petroleum Co LP - Michigan Refining Div and Port Hamilton Refining & Transportation Lllp.
Ultramar Inc Wilmington Refinery vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
763K 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
Ultramar Inc Wilmington Refinery in the Petroleum sector extract
Among the 902 Petroleum facilities in this database, Ultramar Inc Wilmington Refinery reports the 92nd-largest volume, placing it in the top 10.2% of its sector. Scale peers outside California include Marathon Petroleum Co LP - Michigan Refining Div and Port Hamilton Refining & Transportation Lllp.
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
- Ultramar Inc Wilmington Refinery's total reported releases fell from 159.7 thousand lb in 2022 to 153.5 thousand lb in 2023, based on EPA TRI filings.
- Ultramar Inc Wilmington Refinery's water releases rose from 19 lb in 2022 to 49 lb in 2023, based on EPA TRI filings.
- Ultramar Inc Wilmington Refinery's off-site transfers fell from 19.6 thousand lb in 2022 to 8.2 thousand lb in 2023, based on EPA TRI filings.
- Ultramar Inc Wilmington Refinery's chemicals reported fell from 34 in 2022 to 32 in 2023, based on EPA TRI filings.
Ultramar Inc Wilmington Refinery Form-R facts
Compare this facility
See how Ultramar Inc Wilmington Refinery stacks up against nearby facilities and the typical reporter.
129.1× more than the comparison
37.0× 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 Ultramar Inc Wilmington Refinery releases toxic chemicals into the environment. Total: 762.5K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 3% (157.5K lbs to 153.5K lbs).
Ultramar Inc Wilmington Refinery: annual Form-R pounds
MID site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Ultramar Inc Wilmington Refinery year-over-year reported totals (decreased by 3% 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 | 157.5K lbs | 37 |
| 2020 | 145.7K lbs | 34 |
| 2021 | 146.1K lbs | 33 |
| 2022 | 159.7K lbs | 34 |
| 2023 | 153.5K lbs | 32 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 12 of 37 chemicals are carcinogens. Sorted by total release volume.
Ultramar Inc Wilmington Refinery · AIR-pathway site
Nearest TRI Facilities to Ultramar Inc Wilmington Refinery
Closest other reporters in California - including Hj Baker & Bro LLC, Tesoro Wilmington Calciner, Clean Harbors Wilmington LLC, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside California - e.g. Marathon Petroleum Co LP - Michigan Refining Div, Port Hamilton Refining & Transportation Lllp, Valero Refining Co -Oklahoma Valero Ardmore Refinery.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Ultramar Inc Wilmington Refinery on cumulative reported pounds (762.5K lbs) and distinct chemical count (37). Release-pound peers include Tse Industries Inc., Master Woodcraft Cabinetry LLC, Gcc Rio Grande Inc. Chemical-count peers include Holcim (us) (including Systech Env. Corp.), Exxonmobil Oil Corp Joliet Refinery, Valero Refining - Meraux LLC Meraux Refinery. 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.
- Tse Industries Inc. Clearwater, FL · Plastics and Rubber 763.7K lbs reported
- Master Woodcraft Cabinetry LLC Thompsontown, PA · Furniture 764.0K lbs reported
- Gcc Rio Grande Inc Pueblo, CO · Nonmetallic Mineral Product 764.2K 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).
- Holcim (us) (including Systech Env. Corp.) Paulding, OH · Nonmetallic Mineral Product 37 chemicals
- Exxonmobil Oil Corp Joliet Refinery Channahon, IL · Petroleum 37 chemicals
- Valero Refining - Meraux LLC Meraux Refinery Meraux, LA · Petroleum 37 chemicals
- Shintech Plaquemine Plant Plaquemine, LA · Chemicals 37 chemicals
Other Valero Energy Corp Facilities
Same-parent TRI sites ranked by reported releases - including Valero Refining - Texas L.P. Houston Refinery, Valero Refining-Texas LP, Diamond Shamrock Refining Co LP.
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, Hydrogen cyanide, Hydrogen sulfide, n-Hexane; nearby reporters include Hj Baker & Bro LLC. Ultramar Inc Wilmington Refinery stamps MID 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 Ultramar Inc Wilmington Refinery TRI extract (MID · AIR · CARC-LEAN · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Ultramar Inc Wilmington Refinery totals are self-reported EPCRA §313 estimates for Wilmington, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324110 · Petroleum. 1.7% of Los Angeles TRI pounds in this extract. Nearest ABS peer: Tse Industries Inc. (Δ 1.2K lbs). Pounds ≠ exposure.
Ultramar Inc Wilmington Refinery stamps MID volume · AIR pathway · CARC-LEAN · lead Ammonia. 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