Toluene
Toluene at Exxonmobil Refining & Supply Baytown Refinery (Part) have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Exxonmobil Refining & Supply Baytown Refinery (Part)
Total reported releases 2.0M lb held roughly steady year over year (-3%). Total releases concentrations are up 32% since 2010.
2800 DECKER DR, Baytown, Texas · 324110 · Petroleum · operated by Exxon Mobil CORP
Anomaly engine
Notable Signals
Toluene
Toluene releases at Exxonmobil Refining & Supply Baytown Refinery (Part) rose from 248k lb to 469k lb between 2023 and 2024.
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) at Exxonmobil Refining & Supply Baytown Refinery (Part) have more than three-quarters since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Toluene
Toluene 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 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 49% since 2010.
Ammonia
Ammonia concentrations are roughly unchanged from 2010.
Hydrogen cyanide
Hydrogen cyanide concentrations are up 24% since 2011.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations are up 12% since 2010.
Carbonyl sulfide
Carbonyl sulfide concentrations are roughly unchanged from 2010.
n-Hexane
n-Hexane concentrations have fallen 44% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (39 Census block groups, population-weighted demographics): a population of 62,568. Why we surface this →
45.3%
Low-income
76.9%
People of color
8.3%
Under age 5
10.0%
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.