Arq Solutions (Operations) LLC
Total reported releases 173k lb fell meaningfully year over year (-21%). Total releases concentrations have more than doubled since 2010.
201 RED RIVER MINE RD, Coushatta, Louisiana · 325998 · Chemicals · operated by Arq Solutions (Red River) LLC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
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 more than doubled since 2012.
Barium
Barium concentrations have fallen 20% since 2014.
Manganese And Manganese Compounds
Manganese And Manganese Compounds concentrations have fallen 23% since 2012.
Ammonia
Ammonia concentrations have more than doubled since 2010.
Lead compounds
Lead compounds concentrations have more than doubled since 2011.
Ethylene
Ethylene concentrations are up 19% since 2010.
Naphthalene
Naphthalene concentrations have more than halved since 2011.
Propylene
Propylene concentrations have fallen 45% since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 1,733. Why we surface this →
Low-income
People of color
Under age 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.