N450
N450 releases at Holcim (Us) INC - Ada Plant fell from 30k lb to 0 lb (100% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Holcim (Us) INC - Ada Plant
Total reported releases 50k lb fell sharply year over year (-36%). Total releases concentrations have fallen 26% since 2010.
14500 CR 1550, Ada, Oklahoma · 327310 · Nonmetallic Mineral Product · operated by Holcim Participations (Us) INC
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Zinc compounds
Zinc compounds concentrations are roughly unchanged from 2010.
Ammonia
Ammonia concentrations have more than halved since 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than doubled since 2010.
Chromium
Chromium concentrations have more than doubled since 2014.
Mercury
Mercury concentrations have fallen 46% since 2015.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (11 Census block groups, population-weighted demographics): a population of 11,244. Why we surface this →
34.4%
Low-income
38.0%
People of color
5.5%
Under age 5
16.2%
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.