Par Pacific Holdings Inc
6 facilities · 4 states · 2.4M lbs total releases
According to the EPA Toxics Release Inventory, Par Pacific Holdings Inc is the reported parent of 6 Form R facilities across 4 states, disclosing 2.4M lbs of toxic releases. 15 of 132 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Hawaii (883.9K lbs). Those TRI figures remain self-reported disclosure pounds for Par Pacific Holdings Inc, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Par Pacific Holdings Inc: EPA TRI 2023 reporting year
Same facilities, both years
-3.1%
4 facilities that filed in 2022 and 2023
Whole inventory
-2.1%
436.3 thousand lb → 427.1 thousand lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Par Pacific Holdings Inc's total reported releases fell from 436.3 thousand lb in 2022 to 422.6 thousand lb in 2023, based on EPA TRI filings.
- Par Pacific Holdings Inc's off-site transfers rose from 19.5 thousand lb in 2022 to 31.9 thousand lb in 2023, based on EPA TRI filings.
- Par Pacific Holdings Inc's water releases rose from 6.1 thousand lb in 2022 to 7.1 thousand lb in 2023, based on EPA TRI filings.
- Par Pacific Holdings Inc's air releases fell from 405.3 thousand lb in 2022 to 378.0 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Par Pacific Holdings Inc from filing to facility
Largest Form R sites under this parent: Par Montana Billings Refinery; Par Hawaii Refining LLC; US Oil & Refining Co; Wyoming Refining Co. Neighbor parents on the disclosure ladder: Stillwater Mining Co; Weyerhaeuser Co; Chs Inc. Largest disclosed chemicals by pounds: Ammonia; n-Hexane; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Toluene; Xylene (mixed isomers). Heaviest-reporting states in this extract: Hawaii; Montana; Washington. Industry labels on the parent rollup: Petroleum; Petroleum Bulk Terminals. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Par Montana Billings Refinery; Par Hawaii Refining LLC; US Oil & Refining Co; Wyoming Refining Co. Neighbor parents on the disclosure ladder: Stillwater Mining Co; Weyerhaeuser Co; Chs Inc. Largest disclosed chemicals by pounds: Ammonia; n-Hexane; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Toluene; Xylene (mixed isomers). Heaviest-reporting states in this extract: Hawaii; Montana; Washington. Industry labels on the parent rollup: Petroleum; Petroleum Bulk Terminals.
Par Pacific Holdings Inc ranks #417 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. Par Pacific Holdings Inc files across 4 states, a regional parent portfolio rather than a single-state discloser. Par Pacific Holdings Inc's disclosed pounds are spread across 6 facilities, no single site dominates the parent total in this extract.
Parent aggregation for Par Pacific Holdings Inc follows facility-reported names. Compare the named neighbors (Stillwater Mining Co; Weyerhaeuser Co; Chs Inc) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Par Pacific Holdings Inc sits among TRI parents
Par Pacific Holdings Inc sits on a disclosure ladder beside Stillwater Mining Co and Weyerhaeuser Co and Chs Inc. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Stillwater Mining Co · rank #415 · 3.4M lbs
Lower disclosed volume
- Weyerhaeuser Co · rank #418 · 866.1K lbs
- Chs Inc · rank #419 · 816.2K lbs
Largest chemicals disclosed by Par Pacific Holdings Inc
Ammonia; n-Hexane; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Toluene; Xylene (mixed isomers) lead the Form R pound rollup for this parent, including filings such as Par Montana Billings Refinery. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Ammonia | 559.6K lbs |
| n-Hexane | 422.1K lbs |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 279.1K lbs |
| Toluene | 205.7K lbs |
| Xylene (mixed isomers) | 186.5K lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Hawaii | 2 | 883.9K lbs |
| Montana | 1 | 881.7K lbs |
| Washington | 2 | 540.5K lbs |
| Wyoming | 1 | 76.4K lbs |
Facilities (6)
| Facility | Releases |
|---|---|
| Par Montana Billings Refinery Billings, MT | 881.7K lbs |
| Par Hawaii Refining LLC Kapolei, HI | 841.7K lbs |
| US Oil & Refining Co Tacoma, WA | 526.5K lbs |
| Wyoming Refining Co Newcastle, WY | 76.4K lbs |
| Par West Refinery Kapolei, HI | 42.1K lbs |
| Par Montana Spokane Terminal Spokane, WA | 14.0K lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest Par Pacific Holdings Inc on total disclosed release pounds (2.4M lbs) and reporting facility count (6). Release-volume peers include Deere & Co, Novelis Corp, George's Inc. Facility-count peers include Abbott Laboratories, Agribeef Co, Allnex USA Inc. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Hawaii, Montana, Washington; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Par Pacific Holdings Inc's TRI parent record
From Par Pacific Holdings Inc, open Par Montana Billings Refinery or compare against Stillwater Mining Co rather than reading rank alone.
- Open the largest Form R site for Par Pacific Holdings Inc (Par Montana Billings Refinery in MT). Largest facility
- Compare against Stillwater Mining Co, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Par Pacific Holdings Inc sits among all slug-merged TRI parents. All parent companies
Rank and peers (Stillwater Mining Co, Weyerhaeuser Co) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Par Pacific Holdings Inc's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.