Ethylene
Ethylene releases at Alon Refining Krotz Springs INC rose from 18k lb to 37k lb (2.1×) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Alon Refining Krotz Springs INC
Total reported releases 404k lb fell meaningfully year over year (-21%). Total releases concentrations have fallen 29% since 2010.
HWY 105 S, Krotz Springs, Louisiana · 324110 · Petroleum · operated by Delek US Holdings INC
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have fallen 13% since 2010.
Ammonia
Ammonia concentrations have more than doubled since 2010.
Hydrogen cyanide
Hydrogen cyanide concentrations have more than doubled since 2013.
Ethylene
Ethylene concentrations are up 29% since 2015.
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) concentrations have fallen 10% since 2019.
Hydrogen sulfide
Hydrogen sulfide concentrations have fallen 40% since 2012.
Propylene
Propylene concentrations have more than doubled since 2010.
n-Hexane
n-Hexane concentrations have fallen 36% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (2 Census block groups, population-weighted demographics): a population of 915. Why we surface this →
49.9%
Low-income
3.1%
People of color
4.5%
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.