Monument Chemical Port Arthur LLC
Total reported releases 70k lb rose by an order of magnitude year over year (+1003%). Total releases concentrations have more than halved since 2011.
2450 S GULFWAY DR, Port Arthur, Texas · 325199 · Chemicals · operated by Monument Chemical LLC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Ethylene glycol
Ethylene glycol concentrations have more than halved since 2017.
Benzene
Benzene concentrations have more than doubled since 2010.
Toluene
Toluene concentrations have more than doubled since 2010.
n-Hexane
n-Hexane concentrations have more than doubled since 2010.
Styrene
Styrene concentrations have more than doubled since 2017.
Naphthalene
Naphthalene concentrations have more than doubled since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than doubled since 2010.
Dicyclopentadiene
Dicyclopentadiene concentrations have more than doubled since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (2 Census block groups, population-weighted demographics): a population of 944. 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.