Ammonia
Ammonia at Merom Generating Station have more than three-quarters since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Merom Generating Station
Total reported releases 1.1M lb fell modestly year over year (-14%). Total releases concentrations have more than halved since 2010.
5500 W OLD HWY 54, Sullivan, Indiana · 221112 · Electric Utilities · operated by Hallador Power Co LLC
Anomaly engine
Notable Signals
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) at Merom Generating Station have more than three-quarters since 2010 (through 2024).
Total reported releases
Total reported releases at Merom Generating Station have more than halved since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Barium And Barium Compounds
Barium And Barium Compounds concentrations have fallen 49% since 2010.
Zinc compounds
Zinc compounds concentrations have fallen 19% 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 have more than halved since 2010.
Vanadium compounds
Vanadium compounds concentrations have fallen 47% 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.
Manganese And Manganese Compounds
Manganese And Manganese Compounds concentrations have fallen 36% since 2010.
Nickel And Nickel Compounds
Nickel And Nickel Compounds concentrations have fallen 38% since 2010.
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) 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 (2 Census block groups, population-weighted demographics): a population of 1,351. Why we surface this →
41.1%
Low-income
0.0%
People of color
10.0%
Under age 5
39.5%
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.