EPA TRI Facility · Natural Gas Processing
50 Buttes
Gillette, WY · Parent: Western Midstream Partners LP
- Total releases
- 118.5K lbs
- Chemicals reported
- 6
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
50 Buttes: how the 118.5K lbs splits
118.5K lbs across all reported pathways
- Off-site Transfers 113.6K lbs 95.9%
- Air Releases 4.8K lbs 4.1%
50 Buttes's 118.5K lbs Form-R total is OFFSITE - off-site transfers is 95.9% of the bar. Next segment: air releases at 4.1%. Leading chemical by pounds: n-Hexane.
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 OFFSITE pathway CARC-LEAN
50 Buttes is an EPA Toxics Release Inventory reporter in Gillette, WY, in the natural gas processing sector. It reported 118.5K lbs of releases across 6 chemicals in 2023. That ranks 4,228 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Wyoming's 70 reporting TRI sites, pounds #1 is not chemical-count #1. 50 Buttes is pounds #21 and chemical-count #24 at 118.5K lbs. Dyno Nobel Inc-Cheyenne Plant leads reported pounds (27.1M lbs) at 8 chemicals (chemical-count #19). Hf Sinclair Parco Refining LLC leads chemical count at 36 chemicals (1.5M lbs, pounds #10). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Joy Global Gillette Wy; Black Hills Corp - Neil Simpson Complex; Pacificorp Wyodak Plant; Buckskin Mining Co Gillette Wy. Similar-scale Natural Gas Processing peers outside Wyoming: Geismar Fractination Plant; CO2 Extraction Plant; Scissortail Engry L/paden Plt; Godley Gas Plant. Other Western Midstream Partners LP sites in this extract: Steamboat Processing Facility; Western Gas Resources Hilight Gas Plant; Latham Gas Plant; Ramsey Gas Plant. Largest disclosed chemicals by pounds: n-Hexane; Cyclohexane; Toluene; Benzene.
50 Buttes stamps MID volume with a dominant OFFSITE pathway (95.9% off-site transfers) across 6 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 118.5K lbs (2023–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Geismar Fractination Plant and CO2 Extraction Plant.
50 Buttes vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
118K lbs Top 16% higher than 84% 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
50 Buttes in the Natural Gas Processing sector extract
Among the 339 Natural Gas Processing facilities in this database, 50 Buttes reports the 44th-largest volume, placing it in the top 13% of its sector. Scale peers outside Wyoming include Geismar Fractination Plant and CO2 Extraction Plant.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
50 Buttes Form-R facts
Compare this facility
See how 50 Buttes stacks up against nearby facilities and the typical reporter.
154.9× more than the comparison
6.0× 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 50 Buttes releases toxic chemicals into the environment. Total: 118.5K lbs.
Chemical Releases
Aggregated across all reporting years (2023–2023). 1 of 6 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| n-Hexane | 69.2K lbs | - |
| Cyclohexane | 32.9K lbs | - |
| Toluene | 6.2K lbs | - |
| Benzene | 5.1K lbs | Carcinogen |
| Xylene (mixed isomers) | 4.3K lbs | - |
| Ethylene glycol | 844 lbs | - |
50 Buttes · OFFSITE-pathway site
Nearest TRI Facilities to 50 Buttes
Closest other reporters in Wyoming - including Joy Global Gillette Wy, Black Hills Corp - Neil Simpson Complex, Pacificorp Wyodak Plant, ordered by distance.
Showing 8 of 69 other reporting facilities in Wyoming.
Similar Natural Gas Processing Facilities
Other Natural Gas Processing facilities with similar total release volumes (±80%), outside Wyoming - e.g. Geismar Fractination Plant, CO2 Extraction Plant, Scissortail Engry L/paden Plt.
Compare beyond Wyoming
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest 50 Buttes on cumulative reported pounds (118.5K lbs) and distinct chemical count (6). Release-pound peers include Carmeuse Lime Inc Grand River Operations, Camp James A. Garfield Joint Military Training Center, Lone Star Ind. Inc. DBA Buzzi Unicem USA Pryor Cement Plant. Chemical-count peers include Eaton Intelligent Power Ltd, Leoni Wire Inc, Turf Care Supply-Hatfield Plant. 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.
- Carmeuse Lime Inc Grand River Operations Grand River, OH · Nonmetallic Mineral Product 118.4K lbs reported
- Camp James A. Garfield Joint Military Training Center Newton Falls, OH · Other 118.5K lbs reported
- Lone Star Ind. Inc. DBA Buzzi Unicem USA Pryor Cement Plant Pryor, OK · Nonmetallic Mineral Product 118.6K lbs reported
- Guardian Energy LLC Janesville, MN · Chemicals 118.4K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Western Midstream Partners LP Facilities
Same-parent TRI sites ranked by reported releases - including Steamboat Processing Facility, Western Gas Resources Hilight Gas Plant, Latham Gas Plant.
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 n-Hexane, Cyclohexane, Toluene, Benzene; nearby reporters include Joy Global Gillette Wy. 50 Buttes stamps MID volume · OFFSITE 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 50 Buttes TRI extract (MID · OFFSITE · CARC-LEAN · lead n-Hexane) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
50 Buttes totals are self-reported EPCRA §313 estimates for Gillette, WY, latest year 2023. NAICS 211130 · Natural Gas Processing. 0.6% of Campbell TRI pounds in this extract. Nearest ABS peer: Carmeuse Lime Inc Grand River Operations (Δ 36 lbs). Pounds ≠ exposure.
50 Buttes stamps MID volume · OFFSITE pathway · CARC-LEAN · lead n-Hexane. 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