Total reported releases 2.0M lb fell modestly year over year (-9%). Total releases concentrations are up 55% since 2010.
250 INDUSTRIAL RD, Pascagoula, Mississippi · 324110 · Petroleum · operated by Chevron CORP
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Chevron Products CO Pascagoula Refinery have more than doubled since 2010 (through 2024).
Total reported releases at Chevron Products CO Pascagoula Refinery have risen 55% since 2010 (through 2024).
Carbonyl sulfide releases at Chevron Products CO Pascagoula Refinery fell from 33k lb to 8k lb (78% lower) between 2023 and 2024.
Copper And Copper Compounds at Chevron Products CO Pascagoula Refinery have more than three-quarters since 2010 (through 2024).
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2010.
Ammonia concentrations are roughly unchanged from 2010.
Hydrogen cyanide concentrations are up 54% since 2014.
n-Hexane concentrations are roughly unchanged from 2010.
Toluene concentrations have fallen 33% since 2010.
Methanol concentrations have more than halved since 2010.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations have more than doubled since 2010.
Benzene concentrations have fallen 23% since 2010.
Within 3 miles of this facility (16 Census block groups, population-weighted demographics): a population of 14,739. 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.