Arsenic
Arsenic releases at Honeywell International INC Geismar Plant rose from 72k lb to 272k lb (3.8×) between 2023 and 2024.
Total reported releases 347k lb more than doubled year over year (+86%). Total releases concentrations have more than halved since 2010.
5525 HWY 3115, Carville, Louisiana · 325120 · Chemicals · operated by Honeywell International INC
Arsenic releases at Honeywell International INC Geismar Plant rose from 72k lb to 272k lb (3.8×) between 2023 and 2024.
N982 releases at Honeywell International INC Geismar Plant fell from 27k lb to 0 lb (100% lower) between 2023 and 2024.
Chromium releases at Honeywell International INC Geismar Plant fell from 32k lb to 14k lb (57% lower) between 2023 and 2024.
2-Chloro-1,1,1,2-tetrafluoroethane (HCFC-124) at Honeywell International INC Geismar Plant have more than three-quarters since 2010 (through 2024).
Showing the 4 most editorially weighted signals out of 6. Lower-severity signals fold into the chemical breakdown and history charts below.
Arsenic concentrations have more than halved since 2010.
Hydrogen fluoride concentrations have more than halved since 2010.
Chromium concentrations have more than halved since 2010.
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations have fallen 36% since 2010.
Antimony compounds concentrations have more than doubled since 2012.
2-Chloro-1,1,1,2-tetrafluoroethane (HCFC-124) concentrations have more than halved since 2010.
Chlorine concentrations have more than halved since 2010.
Vinyl fluoride concentrations have more than doubled since 2019.
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 2,821. 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.