Total reported releases
Total reported releases at Shintech Plaquemine Plant have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Shintech Plaquemine Plant
Total reported releases 372k lb held roughly steady year over year (-4%). Total releases concentrations have more than doubled since 2010.
26270 HWY 405, Plaquemine, Louisiana · 325211 · Chemicals · operated by C-K Tech INC
Anomaly engine
Notable Signals
Ethylene
Ethylene releases at Shintech Plaquemine Plant fell from 40k lb to 8k lb (79% lower) between 2023 and 2024.
Chemicals reported · most recent year
What This Facility Releases
Ammonia
Ammonia concentrations have more than doubled since 2010.
Chlorine
Chlorine concentrations have more than doubled 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 have more than doubled since 2010.
n-Hexane
n-Hexane concentrations are up 36% since 2019.
Vinyl chloride
Vinyl chloride concentrations have fallen 42% since 2010.
Methanol
Methanol concentrations are roughly unchanged from 2013.
1,2-Dichloroethane
1,2-Dichloroethane concentrations have fallen 42% since 2010.
Ethylene
Ethylene concentrations have more than doubled since 2016.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (2 Census block groups, population-weighted demographics): a population of 4,736. Why we surface this →
40.7%
Low-income
72.4%
People of color
10.4%
Under age 5
12.4%
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.