Total reported releases 2.2M lb rose modestly year over year (+6%). Total releases concentrations have more than doubled since 2010.
9701 MANCHESTER, Houston, Texas · 324110 · Petroleum · operated by Valero Energy CORP
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Valero Refining - Texas L.P. Houston Refinery have more than doubled since 2010 (through 2024).
Total reported releases at Valero Refining - Texas L.P. Houston Refinery have more than doubled since 2010 (through 2024).
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2010.
Hydrogen cyanide concentrations have more than halved since 2013.
Ammonia concentrations have fallen 39% since 2010.
Cyclohexane concentrations have more than doubled since 2010.
Toluene concentrations are roughly unchanged from 2010.
Benzene concentrations are up 48% since 2010.
Xylene (mixed isomers) concentrations have fallen 33% since 2010.
Propylene concentrations are roughly unchanged from 2010.
Within 3 miles of this facility (63 Census block groups, population-weighted demographics): a population of 89,462. 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.