EPA TRI Facility · Petroleum
Knife River Cheyenne
Cheyenne, WY · Parent: Mdu Resources Group Inc
- Total releases
- 1.2K lbs
- Chemicals reported
- 6
- Carcinogens
- 1
- Primary pathway
- Land Disposal
LAND Form-R mix
Knife River Cheyenne: how the 1.2K lbs splits
1.2K lbs across all reported pathways
- Land Disposal 1.2K lbs 99.8%
- Air Releases 3 lbs 0.2%
Knife River Cheyenne's 1.2K lbs Form-R total is LAND - land disposal is 99.8% of the bar. Next segment: air releases at 0.2%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
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.
LIGHT volume LAND pathway TRACE-CARC
Knife River Cheyenne is an EPA Toxics Release Inventory reporter in Cheyenne, WY, in the petroleum sector. It reported 101 lbs of releases across 4 chemicals in 2023, and 1.2K lbs in total across its 2019-2023 reporting years. That ranks 13,600 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. Knife River Cheyenne is pounds #44 and chemical-count #26 at 1.2K 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). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Ergon Asphalt & Emulsions Inc. - Cheyenne; Cheyenne Renewable Diesel Co LLC; Voestalpine Railway Systems Nortrak Inc.; U.S. Dod Usaf Wyoming Ang. Similar-scale Petroleum peers outside Wyoming: Russell Standard Mercer; Marathon Petroleum Co - Kuttawa Ky Terminal; Danosa Caribbean Inc; Hyrum Hot Plant. Other Mdu Resources Group Inc sites in this extract: Rm Heskett Station; Lewis & Clark Station; Mdu Resources Roseburg Asphalt; Mdu Resources Redmond Concrete. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Polycyclic aromatic compounds; Lead And Lead Compounds; Lead compounds.
Knife River Cheyenne stamps LIGHT volume with a dominant LAND pathway (99.8% land disposal) across 6 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 1.2K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Russell Standard Mercer and Marathon Petroleum Co - Kuttawa Ky Terminal.
Knife River Cheyenne vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.2K lbs 48th percentile higher than 48% 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
Knife River Cheyenne: Nitrate compounds (water dissociable; reportable only when in aqueous solution)-led volume
Among the 902 Petroleum facilities in this database, Knife River Cheyenne reports the 314th-largest volume (1.2K lbs). Its reported volume is concentrated rather than spread: Nitrate compounds (water dissociable; reportable only when in aqueous solution) alone is 99.8% of the total. Scale peers outside Wyoming include Russell Standard Mercer and Marathon Petroleum Co - Kuttawa Ky Terminal.
Concentrated means ≥60% of Knife River Cheyenne's pounds in one chemical - here Nitrate compounds (water dissociable; reportable only when in aqueous solution) at 99.8%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Knife River Cheyenne's total reported releases fell from 130 lb in 2022 to 101 lb in 2023, based on EPA TRI filings.
- Knife River Cheyenne's land releases fell from 130 lb in 2022 to 100 lb in 2023, based on EPA TRI filings.
Knife River Cheyenne Form-R facts
Compare this facility
See how Knife River Cheyenne stacks up against nearby facilities and the typical reporter.
87.7× more than the comparison
50% 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 Knife River Cheyenne releases toxic chemicals into the environment. Total: 1.2K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 86% (701 lbs to 101 lbs).
Knife River Cheyenne: annual Form-R pounds
LIGHT site · LAND pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Knife River Cheyenne year-over-year reported totals (decreased by 86% 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: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 701 lbs | 4 |
| 2020 | 1 lbs | 3 |
| 2021 | 271 lbs | 5 |
| 2022 | 130 lbs | 4 |
| 2023 | 101 lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 6 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 1.2K lbs | - |
| Polycyclic aromatic compounds | 1 lbs | Carcinogen |
| Lead And Lead Compounds | 1 lbs | - |
| Lead compounds | 1 lbs | - |
| Mercury And Mercury Compounds | 0 lbs | - |
| Benzo[g,h,i]perylene | 0 lbs | - |
Knife River Cheyenne · LAND-pathway site
Nearest TRI Facilities to Knife River Cheyenne
Closest other reporters in Wyoming - including Ergon Asphalt & Emulsions Inc. - Cheyenne, Cheyenne Renewable Diesel Co LLC, Voestalpine Railway Systems Nortrak Inc., ordered by distance.
Showing 8 of 69 other reporting facilities in Wyoming.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside Wyoming - e.g. Russell Standard Mercer, Marathon Petroleum Co - Kuttawa Ky Terminal, Danosa Caribbean Inc.
Compare beyond Wyoming
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Knife River Cheyenne on cumulative reported pounds (1.2K lbs) and distinct chemical count (6). Release-pound peers include Russell Standard Mercer, Marathon Petroleum Co - Kuttawa Ky Terminal, Ultimate Rb. 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Mdu Resources Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Rm Heskett Station, Lewis & Clark Station, Mdu Resources Roseburg Asphalt.
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 Nitrate compounds (water dissociable; reportable only when in aqueous solution), Polycyclic aromatic compounds, Lead And Lead Compounds, Lead compounds; nearby reporters include Ergon Asphalt & Emulsions Inc. - Cheyenne. Knife River Cheyenne stamps LIGHT volume · LAND pathway · TRACE-CARC 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 Knife River Cheyenne TRI extract (LIGHT · LAND · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Knife River Cheyenne totals are self-reported EPCRA §313 estimates for Cheyenne, WY, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324121 · Petroleum. 0.0% of Laramie TRI pounds in this extract. Nearest ABS peer: Russell Standard Mercer (Δ 2 lbs). Pounds ≠ exposure.
Knife River Cheyenne stamps LIGHT volume · LAND pathway · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution). 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