Toluene
Toluene releases at Hf Sinclair Tulsa Refining West Facility rose from 23k lb to 49k lb (2.1×) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Hf Sinclair Tulsa Refining West Facility
Total reported releases 175k lb rose meaningfully year over year (+22%). Total releases concentrations have more than halved since 2010.
1700 S UNION, Tulsa, Oklahoma · 324110 · Petroleum · operated by Hf Sinclair CORP
Anomaly engine
Notable Signals
Xylene (mixed isomers)
Xylene (mixed isomers) releases at Hf Sinclair Tulsa Refining West Facility rose from 19k lb to 32k lb between 2023 and 2024.
0007783064
0007783064 releases at Hf Sinclair Tulsa Refining West Facility fell from 17k lb to 0 lb (100% lower) between 2023 and 2024.
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Hf Sinclair Tulsa Refining West Facility have more than three-quarters since 2010 (through 2024).
Showing the 4 most editorially weighted signals out of 5. Lower-severity signals fold into the chemical breakdown and history charts below.
Chemicals reported · most recent year
What This Facility Releases
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than halved since 2010.
Toluene
Toluene concentrations have more than doubled since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than doubled since 2010.
Benzene
Benzene concentrations are up 25% since 2010.
n-Hexane
n-Hexane concentrations are roughly unchanged from 2010.
Ethylbenzene
Ethylbenzene concentrations are roughly unchanged from 2010.
Cyclohexane
Cyclohexane concentrations have fallen 26% since 2011.
Naphthalene
Naphthalene concentrations are up 51% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (51 Census block groups, population-weighted demographics): a population of 50,359. Why we surface this →
38.8%
Low-income
40.0%
People of color
4.7%
Under age 5
16.7%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.