EPA TRI Facility · Petroleum
Tesoro Alaska - Kenai Refinery
Kenai, AK · Parent: Marathon Petroleum Corp
- Total releases
- 245.8K lbs
- Chemicals reported
- 21
- Carcinogens
- 8
- Primary pathway
- Air Releases
AIR Form-R mix
Tesoro Alaska - Kenai Refinery: how the 245.8K lbs splits
245.8K lbs across all reported pathways
- Air Releases 219.2K lbs 89.2%
- Off-site Transfers 20.1K lbs 8.2%
- Water Discharges 6.0K lbs 2.4%
- Land Disposal 492 lbs 0.2%
Tesoro Alaska - Kenai Refinery's 245.8K lbs Form-R total is AIR - air releases is 89.2% of the bar. Next segment: off-site transfers at 8.2%. 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 AIR pathway CARC-LEAN
Tesoro Alaska - Kenai Refinery is an EPA Toxics Release Inventory reporter in Kenai, AK, in the petroleum sector. It reported 45.1K lbs of releases across 19 chemicals in 2023, and 245.8K lbs in total across its 2019-2023 reporting years. That ranks 2,895 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Alaska's 54 reporting TRI sites, pounds #1 is not chemical-count #1. Tesoro Alaska - Kenai Refinery is pounds #12 and chemical-count #4 at 245.8K lbs. Red Dog Operations leads reported pounds (3.3B lbs) at 23 chemicals (chemical-count #3). Pogo Mine leads chemical count at 30 chemicals (34.9M lbs, pounds #4). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Crowley Kenai Facility; Halliburton Sterling Facility; Univar Solutions USA; Tesoro - Anchorage Terminal. Similar-scale Petroleum peers outside Alaska: Certainteed Shakopee; Cheyenne Renewable Diesel Co LLC; Delek Tyler Refinery; Rain Cii Carbon 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: n-Hexane; Toluene; Xylene (mixed isomers); Hydrogen sulfide.
Tesoro Alaska - Kenai Refinery stamps MID volume with a dominant AIR pathway (89.2% air releases) across 21 chemicals · 8 carcinogen-classified. Cumulative Form-R extract: 245.8K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Certainteed Shakopee and Cheyenne Renewable Diesel Co LLC.
Tesoro Alaska - Kenai Refinery vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
246K lbs Top 11% higher than 89% 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
Tesoro Alaska - Kenai Refinery inside Kenai Peninsula Borough's TRI pounds
Among the 902 Petroleum facilities in this database, Tesoro Alaska - Kenai Refinery reports the 132nd-largest volume, placing it in the top 14.6% of its sector. This one site accounts for 99.0% of every pound reported in Kenai Peninsula Borough. Scale peers outside Alaska include Certainteed Shakopee and Cheyenne Renewable Diesel Co LLC.
County-dominant here means ≥25% of Kenai Peninsula Borough's reported pounds (248.4K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Tesoro Alaska - Kenai Refinery's total reported releases fell from 48.4 thousand lb in 2022 to 45.1 thousand lb in 2023, based on EPA TRI filings.
- Tesoro Alaska - Kenai Refinery's water releases rose from 847 lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
- Tesoro Alaska - Kenai Refinery's off-site transfers rose from 1.4 thousand lb in 2022 to 2.1 thousand lb in 2023, based on EPA TRI filings.
- Tesoro Alaska - Kenai Refinery's land releases rose from 79 lb in 2022 to 108 lb in 2023, based on EPA TRI filings.
Tesoro Alaska - Kenai Refinery Form-R facts
Compare this facility
See how Tesoro Alaska - Kenai Refinery stacks up against nearby facilities and the typical reporter.
96.6× more than the comparison
91% 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 Tesoro Alaska - Kenai Refinery releases toxic chemicals into the environment. Total: 245.8K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 15% (53.3K lbs to 45.1K lbs).
Tesoro Alaska - Kenai Refinery: 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 Tesoro Alaska - Kenai Refinery year-over-year reported totals (decreased by 15% 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: n-Hexane.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 53.3K lbs | 19 |
| 2020 | 58.6K lbs | 19 |
| 2021 | 40.5K lbs | 17 |
| 2022 | 48.4K lbs | 18 |
| 2023 | 45.1K lbs | 19 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 8 of 21 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| n-Hexane | 94.1K lbs | - |
| Toluene | 28.6K lbs | - |
| Xylene (mixed isomers) | 22.5K lbs | - |
| Hydrogen sulfide | 21.4K lbs | - |
| Benzene | 16.5K lbs | Carcinogen |
| Cyclohexane | 14.7K lbs | - |
| Ammonia | 12.6K lbs | - |
| Nickel compounds | 8.0K lbs | Carcinogen |
| 1,2,4-Trimethylbenzene | 5.6K lbs | - |
| Ethylbenzene | 4.6K lbs | Carcinogen |
| Molybdenum trioxide | 3.5K lbs | Carcinogen |
| Lead compounds | 2.9K lbs | - |
| Carbonyl sulfide | 2.8K lbs | - |
| Mercury compounds | 2.4K lbs | - |
| Methanol | 1.5K lbs | - |
| Cumene | 1.3K lbs | Carcinogen |
| Naphthalene | 1.2K lbs | Carcinogen |
| Propylene | 932 lbs | - |
| Polycyclic aromatic compounds | 730 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 7 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Tesoro Alaska - Kenai Refinery · AIR-pathway site
Nearest TRI Facilities to Tesoro Alaska - Kenai Refinery
Closest other reporters in Alaska - including Crowley Kenai Facility, Halliburton Sterling Facility, Univar Solutions USA, ordered by distance.
Showing 8 of 53 other reporting facilities in Alaska.
Similar Petroleum Facilities
Other Petroleum facilities with similar total release volumes (±80%), outside Alaska - e.g. Certainteed Shakopee, Cheyenne Renewable Diesel Co LLC, Delek Tyler Refinery.
Compare beyond Alaska
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Tesoro Alaska - Kenai Refinery on cumulative reported pounds (245.8K lbs) and distinct chemical count (21). Release-pound peers include Cytiva US LLC, Star Kist Samoa Co, Garmin International Miramar. Chemical-count peers include Clean Earth of North Jersey Inc, Cleveland-Cliffs Monessen Coke LLC, Uss Mon Valley Works - Edgar Thomson 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.
- Cytiva US LLC Pensacola, FL · Plastics and Rubber 245.9K lbs reported
- Star Kist Samoa Co Pago Pago, AS · Food 246.0K lbs reported
- Garmin International Miramar Miramar, FL · Computers and Electronic Products 245.7K lbs reported
- US Air Force Plant 4 Lockheed Martin Aeronautics Co Fort Worth, TX · Transportation Equipment 245.6K lbs reported
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 n-Hexane, Toluene, Xylene (mixed isomers), Hydrogen sulfide; nearby reporters include Crowley Kenai Facility. Tesoro Alaska - Kenai 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 Tesoro Alaska - Kenai Refinery TRI extract (MID · AIR · CARC-LEAN · lead n-Hexane) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Tesoro Alaska - Kenai Refinery totals are self-reported EPCRA §313 estimates for Kenai, AK, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 324110 · Petroleum. 99.0% of Kenai Peninsula Borough TRI pounds in this extract. Nearest ABS peer: Cytiva US LLC (Δ 73 lbs). Pounds ≠ exposure.
Tesoro Alaska - Kenai Refinery stamps MID volume · AIR 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