The San Antonio Refinery LLC
Total reported releases 28k lb fell modestly year over year (-9%). Total releases concentrations are roughly unchanged from 2010.
7811 S PRESA ST, San Antonio, Texas · 324110 · Petroleum · operated by Allegiance Refining LLC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Toluene
Toluene concentrations are roughly unchanged from 2010.
n-Hexane
n-Hexane concentrations have more than halved since 2013.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have fallen 36% since 2010.
Benzene
Benzene concentrations have fallen 29% since 2010.
Naphthalene
Naphthalene concentrations have more than doubled since 2010.
Cyclohexane
Cyclohexane concentrations have more than doubled since 2010.
Ethylbenzene
Ethylbenzene concentrations have fallen 25% since 2010.
1,2,4-Trimethylbenzene
1,2,4-Trimethylbenzene concentrations have more than halved since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (68 Census block groups, population-weighted demographics): a population of 89,818. Why we surface this →
Low-income
People of color
Under age 5
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.