Hydrogen sulfide
Hydrogen sulfide at Blanchard Refining CO LLC have more than doubled since 2013 (through 2024).
TRI facility · TRI 2024 reporting year
Blanchard Refining CO LLC
Total reported releases 7.6M lb rose modestly year over year (+12%). Total releases concentrations have more than doubled since 2013.
2401 5TH AVE S, Texas City, Texas · 324110 · Petroleum · operated by Marathon Petroleum CORP
Anomaly engine
Notable Signals
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Blanchard Refining CO LLC have more than doubled since 2013 (through 2024).
Total reported releases
Total reported releases at Blanchard Refining CO LLC have more than doubled since 2013 (through 2024).
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) releases at Blanchard Refining CO LLC rose from 277k lb to 570k lb (2.1×) 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
Hydrogen sulfide
Hydrogen sulfide concentrations have more than doubled since 2014.
Ammonia
Ammonia concentrations are up 25% since 2013.
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 2013.
Hydrogen cyanide
Hydrogen cyanide concentrations are up 29% since 2014.
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 have fallen 23% since 2013.
Benzene
Benzene concentrations have fallen 10% since 2013.
n-Hexane
n-Hexane concentrations are up 49% since 2013.
Toluene
Toluene concentrations are roughly unchanged from 2013.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (29 Census block groups, population-weighted demographics): a population of 34,983. Why we surface this →
42.0%
Low-income
62.6%
People of color
7.1%
Under age 5
15.9%
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.