Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Valero Three Rivers Refinery have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Valero Three Rivers Refinery
Total reported releases 455k lb held roughly steady year over year (+3%). Total releases concentrations have more than doubled since 2010.
301 LEROY ST, Three Rivers, Texas · 324110 · Petroleum · operated by Valero Energy CORP
Anomaly engine
Notable Signals
Total reported releases
Total reported releases at Valero Three Rivers Refinery have more than doubled since 2010 (through 2024).
Propylene
Propylene releases at Valero Three Rivers Refinery fell from 22k lb to 3k lb (87% lower) between 2023 and 2024.
Hydrogen cyanide
Hydrogen cyanide releases at Valero Three Rivers Refinery fell from 20k lb to 7k lb (68% lower) between 2023 and 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 doubled since 2010.
Ozone
Ozone concentrations have more than doubled since 2012.
n-Hexane
n-Hexane concentrations have more than halved since 2010.
Toluene
Toluene concentrations have more than doubled since 2010.
Ammonia
Ammonia concentrations have more than halved since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than doubled since 2010.
Benzene
Benzene concentrations have more than halved since 2010.
Hydrogen cyanide
Hydrogen cyanide concentrations have more than halved since 2013.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 1,132. Why we surface this →
49.2%
Low-income
68.8%
People of color
15.2%
Under age 5
12.8%
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.