N511
N511 releases at Arconic US LLC fell from 25k lb to 0 lb (100% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Arconic US LLC
Total reported releases 65k lb fell meaningfully year over year (-29%). Total releases concentrations have fallen 40% since 2010.
4879 STATE ST, Bettendorf, Iowa · 331315 · Primary Metals · operated by Arconic CORP
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
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 are up 25% since 2010.
Chlorine
Chlorine concentrations are up 32% since 2010.
Chromium
Chromium concentrations are up 30% since 2010.
Manganese
Manganese concentrations have fallen 39% since 2010.
Copper
Copper concentrations have fallen 21% since 2010.
Lead
Lead concentrations have fallen 30% since 2010.
Dioxin and dioxin-like compounds
Dioxin and dioxin-like compounds concentrations are roughly unchanged from 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (21 Census block groups, population-weighted demographics): a population of 34,438. Why we surface this →
15.3%
Low-income
16.8%
People of color
5.8%
Under age 5
17.3%
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.