Manganese compounds
Manganese compounds at Southern Illinois Power Cooperative have more than three-quarters since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Southern Illinois Power Cooperative
Total reported releases 86k lb held roughly steady year over year (0%). Total releases concentrations have more than halved since 2010.
11543 LAKE OF EGYPT RD, Marion, Illinois · 221112 · Electric Utilities
Anomaly engine
Notable Signals
Zinc compounds
Zinc compounds at Southern Illinois Power Cooperative have more than three-quarters since 2010 (through 2024).
Total reported releases
Total reported releases at Southern Illinois Power Cooperative have more than three-quarters since 2010 (through 2024).
Chemicals reported · most recent year
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 are roughly unchanged from 2010.
Hydrogen fluoride
Hydrogen fluoride concentrations have more than halved since 2010.
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 more than halved since 2010.
Ammonia
Ammonia concentrations are roughly unchanged from 2010.
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) concentrations have more than halved since 2010.
Nickel compounds
Nickel compounds concentrations have more than halved since 2010.
Zinc compounds
Zinc compounds concentrations have more than halved since 2010.
Mercury compounds
Mercury compounds concentrations have more than halved since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 1,370. Why we surface this →
16.2%
Low-income
7.1%
People of color
2.8%
Under age 5
38.3%
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.