Total reported releases 117k lb rose meaningfully year over year (+26%). Total releases concentrations have fallen 49% since 2010.
2500 E ST BERNARD HWY, Meraux, Louisiana · 324110 · Petroleum · operated by Valero Energy CORP
Nitrate compounds (water dissociable; reportable only when in aqueous solution) releases at Valero Refining - Meraux LLC Meraux Refinery rose from 26k lb to 57k lb (2.2×) between 2023 and 2024.
n-Hexane releases at Valero Refining - Meraux LLC Meraux Refinery fell from 27k lb to 13k lb (51% lower) between 2023 and 2024.
Lead And Lead Compounds at Valero Refining - Meraux LLC Meraux Refinery have more than three-quarters since 2011 (through 2024).
Ammonia at Valero Refining - Meraux LLC Meraux Refinery have more than halved since 2010 (through 2024).
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations are roughly unchanged from 2010.
Ammonia concentrations have more than halved since 2010.
n-Hexane concentrations have more than halved since 2010.
Toluene concentrations have fallen 40% since 2010.
Benzene concentrations have more than halved since 2010.
Xylene (mixed isomers) concentrations have more than halved since 2010.
Carbon disulfide concentrations have fallen 26% since 2011.
Hydrogen sulfide concentrations have fallen 24% since 2012.
Within 3 miles of this facility (36 Census block groups, population-weighted demographics): a population of 36,561. 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.