Total reported releases 76k lb fell meaningfully year over year (-22%). Total releases concentrations have more than doubled since 2010.
1600 VCM PLANT RD, Westlake, Louisiana · 325110 · Chemicals · operated by Westlake CORP
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) releases at Westlake Chemicals & Vinyls LLC fell from 13k lb to 1k lb (92% lower) between 2023 and 2024.
Ethylene concentrations have more than doubled since 2010.
1,2-Dichloroethane concentrations are up 49% since 2010.
Propylene concentrations have more than doubled since 2010.
Vinyl chloride concentrations are up 17% since 2010.
Chloroform concentrations have more than doubled since 2010.
Chlorine concentrations are up 57% since 2010.
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations have more than halved since 2010.
Dichloromethane concentrations have fallen 13% since 2022.
Within 3 miles of this facility (9 Census block groups, population-weighted demographics): a population of 9,818. 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.