Ethylene
Ethylene at Shell Chemical LP have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Shell Chemical LP
Total reported releases 1.5M lb rose modestly year over year (+14%). Total releases concentrations have fallen 18% since 2010.
5900 HWY 225 EAST, Deer Park, Texas · 325110 · Chemicals · operated by Shell Petroleum INC
Anomaly engine
Notable Signals
Ethylene
Ethylene releases at Shell Chemical LP rose from 117k lb to 438k lb (3.7×) between 2023 and 2024.
Hydrogen sulfide
Hydrogen sulfide releases at Shell Chemical LP rose from 16k lb to 39k lb (2.5×) between 2023 and 2024.
Toluene
Toluene releases at Shell Chemical LP fell from 110k lb to 51k lb (53% lower) between 2023 and 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
Ethylene
Ethylene concentrations have more than doubled since 2010.
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than halved since 2010.
Propylene
Propylene concentrations have fallen 27% since 2010.
1,3-Butadiene
1,3-Butadiene concentrations have more than doubled since 2010.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are up 59% since 2010.
4,4'-Isopropylidenediphenol
4,4'-Isopropylidenediphenol concentrations are roughly unchanged from 2010.
Cumene
Cumene concentrations have fallen 38% since 2010.
Toluene
Toluene concentrations are roughly unchanged from 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (24 Census block groups, population-weighted demographics): a population of 44,303. Why we surface this →
23.9%
Low-income
55.5%
People of color
6.8%
Under age 5
14.5%
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.