EPA TRI Facility · Petroleum Bulk Terminals
Marathon Pipe Line - Boise
Boise, ID · Parent: Marathon Petroleum Corp
- Total releases
- 18.4K lbs
- Chemicals reported
- 11
- Carcinogens
- 5
- Primary pathway
- Air Releases
AIR Form-R mix
Marathon Pipe Line - Boise: how the 18.4K lbs splits
18.4K lbs across all reported pathways
- Air Releases 17.8K lbs 96.9%
- Off-site Transfers 573 lbs 3.1%
Marathon Pipe Line - Boise's 18.4K lbs Form-R total is AIR - air releases is 96.9% of the bar. Next segment: off-site transfers at 3.1%. 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.
LIGHT volume AIR pathway CARC-LEAN
Marathon Pipe Line - Boise is an EPA Toxics Release Inventory reporter in Boise, ID, in the petroleum bulk terminals sector. It reported 4.2K lbs of releases across 11 chemicals in 2023, and 18.4K lbs in total across its 2019-2023 reporting years. That ranks 8,426 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Idaho's 123 reporting TRI sites, pounds #1 is not chemical-count #1. Marathon Pipe Line - Boise is pounds #49 and chemical-count #8 at 18.4K lbs. Hecla Ltd Lucky Friday Mine Unit leads reported pounds (58.7M lbs) at 10 chemicals (chemical-count #9). US Ecology Idaho Inc. leads chemical count at 75 chemicals (10.2M lbs, pounds #6). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Darigold-Boise; Boise Facility; Army National Guard Orchard Combat Training Center Ranges; Ergon Asphalt & Emulsions Inc. - Boise. Similar-scale Petroleum Bulk Terminals peers outside Idaho: Mgc Terminal LLC; Arrow Cdp; Sinclair Kansas City Products Terminal; Flint Hills Resources Pine Bend LLC Junction City Terminal. 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); Benzene.
Marathon Pipe Line - Boise stamps LIGHT volume with a dominant AIR pathway (96.9% air releases) across 11 chemicals · 5 carcinogen-classified. Cumulative Form-R extract: 18.4K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Mgc Terminal LLC and Arrow Cdp.
Marathon Pipe Line - Boise vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
18K lbs Top 32% higher than 68% 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
Marathon Pipe Line - Boise in the Petroleum Bulk Terminals sector extract
Among the 695 Petroleum Bulk Terminals facilities in this database, Marathon Pipe Line - Boise reports the 99th-largest volume, placing it in the top 14.2% of its sector. Scale peers outside Idaho include Mgc Terminal LLC and Arrow Cdp.
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
- Marathon Pipe Line - Boise's total reported releases fell from 4.3 thousand lb in 2022 to 4.2 thousand lb in 2023, based on EPA TRI filings.
- Marathon Pipe Line - Boise's off-site transfers fell from 482 lb in 2022 to 58 lb in 2023, based on EPA TRI filings.
- Marathon Pipe Line - Boise's air releases rose from 3.8 thousand lb in 2022 to 4.2 thousand lb in 2023, based on EPA TRI filings.
Marathon Pipe Line - Boise Form-R facts
Compare this facility
See how Marathon Pipe Line - Boise stacks up against nearby facilities and the typical reporter.
78% less than the comparison
3.7× 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 Marathon Pipe Line - Boise releases toxic chemicals into the environment. Total: 18.4K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 39% (3.1K lbs to 4.2K lbs).
Marathon Pipe Line - Boise: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Marathon Pipe Line - Boise year-over-year reported totals (increased by 39% 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 | 3.1K lbs | 7 |
| 2020 | 3.3K lbs | 11 |
| 2021 | 3.5K lbs | 11 |
| 2022 | 4.3K lbs | 11 |
| 2023 | 4.2K lbs | 11 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 5 of 11 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| n-Hexane | 4.9K lbs | - |
| Toluene | 4.8K lbs | - |
| Xylene (mixed isomers) | 3.3K lbs | - |
| Benzene | 2.5K lbs | Carcinogen |
| Cyclohexane | 1.5K lbs | - |
| 1,2,4-Trimethylbenzene | 624 lbs | - |
| Ethylbenzene | 620 lbs | Carcinogen |
| Naphthalene | 94 lbs | Carcinogen |
| Cumene | 57 lbs | Carcinogen |
| Polycyclic aromatic compounds | 0 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
Marathon Pipe Line - Boise · AIR-pathway site
Nearest TRI Facilities to Marathon Pipe Line - Boise
Closest other reporters in Idaho - including Darigold-Boise, Boise Facility, Army National Guard Orchard Combat Training Center Ranges, ordered by distance.
Showing 8 of 122 other reporting facilities in Idaho.
Similar Petroleum Bulk Terminals Facilities
Other Petroleum Bulk Terminals facilities with similar total release volumes (±80%), outside Idaho - e.g. Mgc Terminal LLC, Arrow Cdp, Sinclair Kansas City Products Terminal.
Compare beyond Idaho
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Marathon Pipe Line - Boise on cumulative reported pounds (18.4K lbs) and distinct chemical count (11). Release-pound peers include Acme Brick Co-San Felipe Plant, Dixline Corp, Basf Corp. Chemical-count peers include Puerto Rico Energy LLC - Bayamon Terminal, Lanco Manufacturing Corp, Buckeye Caribbean Terminals LLC (former Scyi). 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).
- Puerto Rico Energy LLC - Bayamon Terminal Bayamon, PR · Petroleum Bulk Terminals 11 chemicals
- Lanco Manufacturing Corp San Lorenzo, PR · Chemicals 11 chemicals
- Buckeye Caribbean Terminals LLC (former Scyi) Yabucoa, PR · Petroleum Bulk Terminals 11 chemicals
- Limetree Bay Terminals LLC DBA Ocean Point Terminals Christiansted, VI · Petroleum Bulk Terminals 11 chemicals
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), Benzene; nearby reporters include Darigold-Boise. Marathon Pipe Line - Boise stamps LIGHT 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 Marathon Pipe Line - Boise TRI extract (LIGHT · AIR · CARC-LEAN · lead n-Hexane) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Marathon Pipe Line - Boise totals are self-reported EPCRA §313 estimates for Boise, ID, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 424710 · Petroleum Bulk Terminals. 1.8% of Ada TRI pounds in this extract. Nearest ABS peer: Acme Brick Co-San Felipe Plant (Δ 0 lbs). Pounds ≠ exposure.
Marathon Pipe Line - Boise stamps LIGHT 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