EPA TRI Facility · Petroleum
Western Refining Southwest Inc-Gallup Refinery
Gallup, NM · Parent: Marathon Petroleum Corp
- Total releases
- 195.5K lbs
- Chemicals reported
- 29
- Carcinogens
- 8
- Primary pathway
- Air Releases
AIR Form-R mix
Western Refining Southwest Inc-Gallup Refinery: how the 195.5K lbs splits
195.5K lbs across all reported pathways
- Air Releases 173.7K lbs 88.8%
- Land Disposal 13.8K lbs 7.0%
- Off-site Transfers 8.0K lbs 4.1%
Western Refining Southwest Inc-Gallup Refinery's 195.5K lbs Form-R total is AIR - air releases is 88.8% of the bar. Next segment: land disposal at 7.0%. Leading chemical by pounds: Ethylene.
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
Western Refining Southwest Inc-Gallup Refinery is an EPA Toxics Release Inventory reporter in Gallup, NM, in the petroleum sector. It reported 56.7K lbs of releases across 25 chemicals in 2020, and 195.5K lbs in total across its 2019-2020 reporting years. That ranks 3,273 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In New Mexico's 97 reporting TRI sites, pounds #1 is not chemical-count #1. Western Refining Southwest Inc-Gallup Refinery is pounds #22 and chemical-count #2 at 195.5K lbs. Dark Horse Treating Facility leads reported pounds (131.3M lbs) at 1 chemicals (chemical-count #82). Hollyfrontier Navajo Refining LLC - Artesia Refinery leads chemical count at 32 chemicals (1.2M lbs, pounds #14). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Tri-State Generation & Transmission - Escalante Station; McKinley Paper & Packaging - Nm Paper Mill; Chaco Gas Plant; Senergy Petroleum LLC - Bloomfield Bulk Plant. Similar-scale Petroleum peers outside New Mexico: Vertex Refining Alabama LLC; Olein Recovery Corp: (refinery Plant); Ergon West Virginia Inc; Cleveland-Cliffs Monessen Coke LLC. Other Marathon Petroleum Corp sites in this extract: Blanchard Refining Co LLC; Marathon Petroleum Co LP; Marathon Mandan Refinery; Catlettsburg Refining LLC. Largest disclosed chemicals by pounds: Ethylene; Hydrogen sulfide; Ammonia; n-Hexane.
Western Refining Southwest Inc-Gallup Refinery stamps MID volume with a dominant AIR pathway (88.8% air releases) across 29 chemicals · 8 carcinogen-classified. Cumulative Form-R extract: 195.5K lbs (2019–2020). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Vertex Refining Alabama LLC and Olein Recovery Corp: (refinery Plant).
Western Refining Southwest Inc-Gallup Refinery vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
195K lbs Top 13% higher than 87% 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
Western Refining Southwest Inc-Gallup Refinery inside Mckinley's TRI pounds
Among the 902 Petroleum facilities in this database, Western Refining Southwest Inc-Gallup Refinery reports the 138th-largest volume, placing it in the top 15.3% of its sector. This one site accounts for 54.4% of every pound reported in Mckinley. Scale peers outside New Mexico include Vertex Refining Alabama LLC and Olein Recovery Corp: (refinery Plant).
County-dominant here means ≥25% of Mckinley's reported pounds (359.7K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Western Refining Southwest Inc-Gallup Refinery Form-R facts
Compare this facility
See how Western Refining Southwest Inc-Gallup Refinery stacks up against nearby facilities and the typical reporter.
19% more than the comparison
4.1× 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 Western Refining Southwest Inc-Gallup Refinery releases toxic chemicals into the environment. Total: 195.5K lbs.
Emissions Trend Summary
From 2019 to 2020, total releases decreased by 59% (138.8K lbs to 56.7K lbs).
Western Refining Southwest Inc-Gallup Refinery: annual Form-R pounds
MID site · AIR pathway · TRI years 2019–2020
- 2019 0
- 2020 0
What this shows Western Refining Southwest Inc-Gallup Refinery year-over-year reported totals (decreased by 59% from 2019 to 2020). 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: Ethylene.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 138.8K lbs | 27 |
| 2020 | 56.7K lbs | 25 |
Chemical Releases
Aggregated across all reporting years (2019–2020). 8 of 29 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ethylene | 48.2K lbs | - |
| Hydrogen sulfide | 46.9K lbs | - |
| Ammonia | 41.5K lbs | - |
| n-Hexane | 17.1K lbs | - |
| Toluene | 12.3K lbs | - |
| Xylene (mixed isomers) | 9.3K lbs | - |
| Benzene | 7.0K lbs | Carcinogen |
| Propylene | 2.5K lbs | - |
| Hydrogen cyanide | 2.4K lbs | - |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 2.3K lbs | - |
| Polycyclic aromatic compounds | 1.3K lbs | Carcinogen |
| Ethylbenzene | 1.2K lbs | Carcinogen |
| 1,3-Butadiene | 668 lbs | Carcinogen |
| 1,2,4-Trimethylbenzene | 619 lbs | - |
| Naphthalene | 434 lbs | Carcinogen |
| Phenol | 371 lbs | - |
| Hydrogen fluoride | 359 lbs | - |
| Cyclohexane | 337 lbs | - |
| Methanol | 277 lbs | - |
| Ethylene glycol | 277 lbs | - |
| Cumene | 146 lbs | Carcinogen |
| Lead And Lead Compounds | 19 lbs | - |
| Lead compounds | 10 lbs | - |
| Molybdenum trioxide | 7 lbs | Carcinogen |
| Mercury And Mercury Compounds | 3 lbs | - |
| Mercury compounds | 1 lbs | - |
| Benzo[g,h,i]perylene | 0 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
| Cresol (mixed isomers) | 0 lbs | - |
Western Refining Southwest Inc-Gallup Refinery · AIR-pathway site
Nearest TRI Facilities to Western Refining Southwest Inc-Gallup Refinery
Closest other reporters in New Mexico - including Tri-State Generation & Transmission - Escalante Station, McKinley Paper & Packaging - Nm Paper Mill, Chaco Gas Plant, ordered by distance.
Showing 8 of 96 other reporting facilities in New Mexico.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside New Mexico - e.g. Vertex Refining Alabama LLC, Olein Recovery Corp: (refinery Plant), Ergon West Virginia Inc.
Compare beyond New Mexico
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Western Refining Southwest Inc-Gallup Refinery on cumulative reported pounds (195.5K lbs) and distinct chemical count (29). Release-pound peers include Industrial Connections & Solutions LLC, Wyoming Sugar Co, Meteor Sealing Systems LLC. Chemical-count peers include Harrison Power Station, Pcs Phosphate Co Inc, Blue Ridge Paper Products 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Marathon Petroleum Corp Facilities
Same-parent TRI sites ranked by reported releases - including Blanchard Refining Co LLC, Marathon Petroleum Co LP, Marathon Mandan Refinery.
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, Hydrogen sulfide, Ammonia, n-Hexane; nearby reporters include Tri-State Generation & Transmission - Escalante Station. Western Refining Southwest Inc-Gallup 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 Western Refining Southwest Inc-Gallup Refinery TRI extract (MID · AIR · CARC-LEAN · lead Ethylene) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Western Refining Southwest Inc-Gallup Refinery totals are self-reported EPCRA §313 estimates for Gallup, NM, latest year 2020. Form-R rows span 2019–2020 (2 years). NAICS 324110 · Petroleum. 54.4% of Mckinley TRI pounds in this extract. Nearest ABS peer: Industrial Connections & Solutions LLC (Δ 93 lbs). Pounds ≠ exposure.
Western Refining Southwest Inc-Gallup Refinery stamps MID volume · AIR pathway · CARC-LEAN · lead Ethylene. 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