Total reported releases 1.3M lb rose meaningfully year over year (+19%). Total releases concentrations are up 29% since 2010.
2200 OLD SPANISH TRAIL, Westlake, Louisiana · 324110 · Petroleum · operated by Phillips 66 Co
Nitrate compounds (water dissociable; reportable only when in aqueous solution) releases at Phillips 66 Lake Charles Refinery rose from 294k lb to 635k lb (2.2×) between 2023 and 2024.
Propylene releases at Phillips 66 Lake Charles Refinery fell from 45k lb to 20k lb (54% lower) between 2023 and 2024.
Propylene at Phillips 66 Lake Charles Refinery have more than halved since 2010 (through 2024).
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations are up 21% since 2010.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are up 44% since 2010.
Ammonia concentrations have more than doubled since 2010.
Hydrogen cyanide concentrations have more than halved since 2012.
n-Hexane concentrations are up 65% since 2010.
Toluene concentrations have fallen 21% since 2010.
Hydrogen sulfide concentrations are up 55% since 2012.
Xylene (mixed isomers) concentrations have fallen 25% since 2010.
Within 3 miles of this facility (10 Census block groups, population-weighted demographics): a population of 10,666. 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.