EPA TRI Facility · Petroleum
Hf Sinclair Casper Refining LLC
Casper, WY · Parent: Hf Sinclair Corp
- Total releases
- 110.8K lbs
- Chemicals reported
- 24
- Carcinogens
- 9
- Primary pathway
- Air Releases
AIR Form-R mix
Hf Sinclair Casper Refining LLC: how the 110.8K lbs splits
110.8K lbs across all reported pathways
- Air Releases 100.9K lbs 91.1%
- Off-site Transfers 9.8K lbs 8.8%
- Land Disposal 73 lbs 0.1%
Hf Sinclair Casper Refining LLC's 110.8K lbs Form-R total is AIR - air releases is 91.1% of the bar. Next segment: off-site transfers at 8.8%. Leading chemical by pounds: Benzene.
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
Hf Sinclair Casper Refining LLC is an EPA Toxics Release Inventory reporter in Casper, WY, in the petroleum sector. It reported 17.0K lbs of releases across 21 chemicals in 2023, and 110.8K lbs in total across its 2019-2023 reporting years. That ranks 4,383 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. Hf Sinclair Casper Refining LLC is pounds #24 and chemical-count #5 at 110.8K 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: Tallgrass Midstream LLC - Casper Gas Plant & Compressor Stat; Championx-Evansville Plant 108; Dura-Line; Halliburton Casper Field Camp. Similar-scale Petroleum peers outside Wyoming: Rain Cii Carbon LLC; Buckeye Texas Processing Llc-Corpus Christi; Valero Partners McKee; Valero Refining - Texas L.P. Houston Refinery. Other Hf Sinclair Corp sites in this extract: Hf Sinclair el Dorado Refining LLC; Hf Sinclair Parco Refining LLC; Hf Sinclair Woods Cross Refining LLC; Hollyfrontier Navajo Refining LLC - Artesia Refinery. Largest disclosed chemicals by pounds: Benzene; Propylene; n-Hexane; Toluene.
Hf Sinclair Casper Refining LLC stamps MID volume with a dominant AIR pathway (91.1% air releases) across 24 chemicals · 9 carcinogen-classified. Cumulative Form-R extract: 110.8K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Rain Cii Carbon LLC and Buckeye Texas Processing Llc-Corpus Christi.
Hf Sinclair Casper Refining LLC vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
111K lbs Top 17% higher than 83% 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
Hf Sinclair Casper Refining LLC inside Natrona's TRI pounds
Among the 902 Petroleum facilities in this database, Hf Sinclair Casper Refining LLC reports the 149th-largest volume, placing it in the top 16.5% of its sector. This one site accounts for 42.9% of every pound reported in Natrona. Scale peers outside Wyoming include Rain Cii Carbon LLC and Buckeye Texas Processing Llc-Corpus Christi.
County-dominant here means ≥25% of Natrona's reported pounds (258.4K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Hf Sinclair Casper Refining LLC's total reported releases fell from 17.7 thousand lb in 2022 to 17.0 thousand lb in 2023, based on EPA TRI filings.
- Hf Sinclair Casper Refining LLC's off-site transfers fell from 409 lb in 2022 to 90 lb in 2023, based on EPA TRI filings.
- Hf Sinclair Casper Refining LLC's air releases fell from 17.2 thousand lb in 2022 to 16.9 thousand lb in 2023, based on EPA TRI filings.
Hf Sinclair Casper Refining LLC Form-R facts
Compare this facility
See how Hf Sinclair Casper Refining LLC stacks up against nearby facilities and the typical reporter.
29.7× more than the comparison
4.8× 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 Hf Sinclair Casper Refining LLC releases toxic chemicals into the environment. Total: 110.8K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 27% (23.4K lbs to 17.0K lbs).
Hf Sinclair Casper Refining LLC: 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 Hf Sinclair Casper Refining LLC year-over-year reported totals (decreased by 27% 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: Benzene.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 23.4K lbs | 18 |
| 2020 | 24.5K lbs | 17 |
| 2021 | 28.2K lbs | 17 |
| 2022 | 17.7K lbs | 21 |
| 2023 | 17.0K lbs | 21 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 9 of 24 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Benzene | 19.8K lbs | Carcinogen |
| Propylene | 19.0K lbs | - |
| n-Hexane | 19.0K lbs | - |
| Toluene | 18.7K lbs | - |
| Xylene (mixed isomers) | 16.7K lbs | - |
| Ethylene | 9.5K lbs | - |
| Cumene | 2.4K lbs | Carcinogen |
| Ethylbenzene | 1.4K lbs | Carcinogen |
| Hydrogen sulfide | 1.2K lbs | - |
| Ammonia | 699 lbs | - |
| Naphthalene | 581 lbs | Carcinogen |
| 1,2,4-Trimethylbenzene | 494 lbs | - |
| Phenanthrene | 377 lbs | - |
| Cyclohexane | 362 lbs | - |
| Lead | 197 lbs | Carcinogen |
| Lead And Lead Compounds | 82 lbs | - |
| Mercury compounds | 66 lbs | - |
| Mercury And Mercury Compounds | 36 lbs | - |
| Lead compounds | 31 lbs | - |
| Polycyclic aromatic compounds | 7 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 7 lbs | - |
| 1,3-Butadiene | 5 lbs | Carcinogen |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
| Molybdenum trioxide | 0 lbs | Carcinogen |
Hf Sinclair Casper Refining LLC · AIR-pathway site
Nearest TRI Facilities to Hf Sinclair Casper Refining LLC
Closest other reporters in Wyoming - including Tallgrass Midstream LLC - Casper Gas Plant & Compressor Stat, Championx-Evansville Plant 108, Dura-Line, 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. Rain Cii Carbon LLC, Buckeye Texas Processing Llc-Corpus Christi, Valero Partners McKee.
Compare beyond Wyoming
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Hf Sinclair Casper Refining LLC on cumulative reported pounds (110.8K lbs) and distinct chemical count (24). Release-pound peers include Trammo Nitrogen Products Inc. C/o Lemm Corp - Operat, Texmark Chemicals Inc, Meyer Utility Structures LLC Plt No 1663. Chemical-count peers include Duke Energy Carolinas LLC - Belews Creek Steam Station, Kapstone Paper & Packaging Corp, Georgia-Pacific Cedar Springs 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.
- Trammo Nitrogen Products Inc. C/o Lemm Corp - Operat North Bend, OH · Chemicals 110.7K lbs reported
- Texmark Chemicals Inc Galena Park, TX · Chemicals 110.8K lbs reported
- Meyer Utility Structures LLC Plt No 1663 Hager City, WI · Fabricated Metals 110.8K lbs reported
- American Chemet Corp East Helena, MT · Chemicals 110.6K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Duke Energy Carolinas LLC - Belews Creek Steam Station Walnut Cove, NC · Electric Utilities 24 chemicals
- Kapstone Paper & Packaging Corp North Charleston, SC · Paper 24 chemicals
- Georgia-Pacific Cedar Springs LLC Cedar Springs, GA · Paper 24 chemicals
- International Paper Pensacola Mill Cantonment, FL · Paper 24 chemicals
Other Hf Sinclair Corp Facilities
Same-parent TRI sites ranked by reported releases - including Hf Sinclair el Dorado Refining LLC, Hf Sinclair Parco Refining LLC, Hf Sinclair Woods Cross Refining LLC.
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 Benzene, Propylene, n-Hexane, Toluene; nearby reporters include Tallgrass Midstream LLC - Casper Gas Plant & Compressor Stat. Hf Sinclair Casper Refining LLC 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 Hf Sinclair Casper Refining LLC TRI extract (MID · AIR · CARC-LEAN · lead Benzene) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Hf Sinclair Casper Refining LLC totals are self-reported EPCRA §313 estimates for Casper, WY, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324110 · Petroleum. 42.9% of Natrona TRI pounds in this extract. Nearest ABS peer: Trammo Nitrogen Products Inc. C/o Lemm Corp - Operat (Δ 47 lbs). Pounds ≠ exposure.
Hf Sinclair Casper Refining LLC stamps MID volume · AIR pathway · CARC-LEAN · lead Benzene. 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