EPA TRI Facility · Petroleum
Knife River Casper
Casper, WY · Parent: Mdu Resources Group Inc
- Total releases
- 112 lbs
- Chemicals reported
- 6
- Carcinogens
- 1
- Primary pathway
- Land Disposal
LAND Form-R mix
Knife River Casper: how the 112 lbs splits
112 lbs across all reported pathways
- Land Disposal 110 lbs 98.3%
- Air Releases 2 lbs 1.7%
Knife River Casper's 112 lbs Form-R total is LAND - land disposal is 98.3% of the bar. Next segment: air releases at 1.7%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
TRACE volume LAND pathway CARC-LEAN
Knife River Casper is an EPA Toxics Release Inventory reporter in Casper, WY, in the petroleum sector. It reported 22 lbs of releases across 4 chemicals in 2023, and 112 lbs in total across its 2019-2023 reporting years. That ranks 16,428 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 Casper is pounds #54 and chemical-count #27 at 112 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: Joy Global Evansville Wy; Championx-Evansville Plant 108; Hf Sinclair Casper Refining LLC; Tallgrass Midstream LLC - Casper Gas Plant & Compressor Stat. Similar-scale Petroleum peers outside Wyoming: Highline Warren LLC - Warren Southeast; Ergon Asphalt Partners LP - Bainbridge; Soprema Inc; Hinkle Contracting Co LLC - Pomp Asphalt & Cave Run Mine. Other Mdu Resources Group Inc sites in this extract: Rm Heskett Station; Lewis & Clark Station; Knife River Cheyenne; Mdu Resources Roseburg Asphalt. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Polycyclic aromatic compounds; Lead And Lead Compounds; Mercury And Mercury Compounds.
Knife River Casper stamps TRACE volume with a dominant LAND pathway (98.3% land disposal) across 6 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 112 lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Highline Warren LLC - Warren Southeast and Ergon Asphalt Partners LP - Bainbridge.
Knife River Casper vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
112 lbs 37th percentile higher than 37% 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 Casper in the Petroleum sector extract
Among the 902 Petroleum facilities in this database, Knife River Casper reports the 427th-largest volume (112 lbs). Scale peers outside Wyoming include Highline Warren LLC - Warren Southeast and Ergon Asphalt Partners LP - Bainbridge.
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
- Knife River Casper's total reported releases fell from 88 lb in 2022 to 22 lb in 2023, based on EPA TRI filings.
- Knife River Casper's land releases fell from 88 lb in 2022 to 22 lb in 2023, based on EPA TRI filings.
Knife River Casper Form-R facts
Compare this facility
See how Knife River Casper stacks up against nearby facilities and the typical reporter.
85% less 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 Knife River Casper releases toxic chemicals into the environment. Total: 112 lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 2110% (1 lbs to 22 lbs).
Knife River Casper: annual Form-R pounds
TRACE site · LAND pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Knife River Casper year-over-year reported totals (increased by 2110% 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 | 1 lbs | 3 |
| 2020 | 0 lbs | 3 |
| 2021 | 0 lbs | 2 |
| 2022 | 88 lbs | 4 |
| 2023 | 22 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) | 110 lbs | - |
| Polycyclic aromatic compounds | 1 lbs | Carcinogen |
| Lead And Lead Compounds | 1 lbs | - |
| Mercury And Mercury Compounds | 0 lbs | - |
| Lead compounds | 0 lbs | - |
| Mercury compounds | 0 lbs | - |
Knife River Casper · LAND-pathway site
Nearest TRI Facilities to Knife River Casper
Closest other reporters in Wyoming - including Joy Global Evansville Wy, Championx-Evansville Plant 108, Hf Sinclair Casper Refining LLC, 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. Highline Warren LLC - Warren Southeast, Ergon Asphalt Partners LP - Bainbridge, Soprema Inc.
Other Mdu Resources Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Rm Heskett Station, Lewis & Clark Station, Knife River Cheyenne.
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, Mercury And Mercury Compounds; nearby reporters include Joy Global Evansville Wy. Knife River Casper stamps TRACE volume · LAND 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 Knife River Casper TRI extract (TRACE · LAND · CARC-LEAN · 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 Casper totals are self-reported EPCRA §313 estimates for Casper, WY, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324121 · Petroleum. 0.0% of Natrona TRI pounds in this extract. Nearest ABS peer: Cabot Corp (Δ 0 lbs). Pounds ≠ exposure.
Knife River Casper stamps TRACE volume · LAND pathway · CARC-LEAN · 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