Ethylene
Ethylene releases at Occidental Chemical Holding Corp - Geismar Plant rose from 14k lb to 28k lb between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Occidental Chemical Holding Corp - Geismar Plant
Total reported releases 206k lb rose meaningfully year over year (+32%). Total releases concentrations are roughly unchanged from 2010.
8318 ASHLAND RD, Geismar, Louisiana · 325199 · Chemicals · operated by Occidental Petroleum CORP
Anomaly engine
Notable Signals
Methanol
Methanol releases at Occidental Chemical Holding Corp - Geismar Plant rose from 18k lb to 34k lb between 2023 and 2024.
Zinc compounds
Zinc compounds releases at Occidental Chemical Holding Corp - Geismar Plant rose from 25k lb to 42k lb between 2023 and 2024.
Zinc compounds
Zinc compounds at Occidental Chemical Holding Corp - Geismar Plant have more than three-quarters since 2011 (through 2024).
Showing the 4 most editorially weighted signals out of 5. Lower-severity signals fold into the chemical breakdown and history charts below.
Chemicals reported · most recent year
What This Facility Releases
Zinc compounds
Zinc compounds concentrations have more than halved since 2011.
Methanol
Methanol concentrations are up 42% since 2010.
Ethylene
Ethylene concentrations have more than halved since 2010.
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are up 86% since 2010.
Ethylene glycol
Ethylene glycol concentrations are roughly unchanged from 2018.
1,2-Dichloroethane
1,2-Dichloroethane concentrations have more than halved since 2010.
Carbon tetrachloride
Carbon tetrachloride concentrations have fallen 44% since 2010.
Chlorine
Chlorine concentrations have more than doubled since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (6 Census block groups, population-weighted demographics): a population of 13,388. Why we surface this →
20.5%
Low-income
54.6%
People of color
5.1%
Under age 5
14.0%
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.