Ethylene
Ethylene releases at Chevron Phillips Chemical CO rose from 52k lb to 131k lb (2.5×) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Chevron Phillips Chemical CO
Total reported releases 236k lb held roughly steady year over year (-0%). Total releases concentrations have fallen 13% since 2010.
2001 S GULFWAY DR, Port Arthur, Texas · 325110 · Chemicals · operated by Chevron Phillips Chemical Co LLC
Anomaly engine
Notable Signals
Naphthalene
Naphthalene releases at Chevron Phillips Chemical CO fell from 80k lb to 210 lb (100% lower) between 2023 and 2024.
Styrene
Styrene releases at Chevron Phillips Chemical CO fell from 13k lb to 260 lb (98% lower) between 2023 and 2024.
Chemicals reported · most recent year
What This Facility Releases
Ethylene
Ethylene concentrations have fallen 27% since 2010.
Propylene
Propylene concentrations are up 56% since 2010.
Cyclohexane
Cyclohexane concentrations have fallen 17% since 2010.
Benzene
Benzene concentrations are roughly unchanged from 2010.
1,3-Butadiene
1,3-Butadiene concentrations have more than doubled since 2010.
Ammonia
Ammonia concentrations are roughly unchanged from 2015.
Toluene
Toluene concentrations are up 17% since 2010.
Dicyclopentadiene
Dicyclopentadiene concentrations have more than halved since 2011.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (41 Census block groups, population-weighted demographics): a population of 36,626. Why we surface this →
54.7%
Low-income
91.5%
People of color
7.5%
Under age 5
12.3%
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.