Ammonia
Ammonia at Koppers Performance Chemicals have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Koppers Performance Chemicals
Total reported releases 524k lb fell modestly year over year (-6%). Total releases concentrations have more than doubled since 2010.
52430 DUNCAN AVE, Hubbell, Michigan · 325180 · Chemicals · operated by Koppers INC
Anomaly engine
Notable Signals
Total reported releases
Total reported releases at Koppers Performance Chemicals have more than doubled since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Ammonia
Ammonia concentrations have more than doubled since 2010.
Copper compounds
Copper compounds concentrations have fallen 36% since 2010.
Lead compounds
Lead compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (3 Census block groups, population-weighted demographics): a population of 3,178. Why we surface this →
40.5%
Low-income
5.8%
People of color
4.0%
Under age 5
22.6%
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.