Lone Star Industries Dba Buzzi Unicem USA
Total reported releases 275k lb fell modestly year over year (-8%). Total releases concentrations have more than doubled since 2018.
202 COUNTY RD 306, Maryneal, Texas · 327310 · Nonmetallic Mineral Product · operated by Rc Lonestar INC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Ammonia
Ammonia concentrations have more than doubled since 2018.
Hydrogen cyanide
Hydrogen cyanide concentrations have fallen 25% since 2023.
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 2018.
Formaldehyde
Formaldehyde concentrations have fallen 14% since 2021.
Acetaldehyde
Acetaldehyde concentrations are roughly unchanged from 2021.
Zinc (fume or dust)
Zinc (fume or dust) concentrations have fallen 14% since 2021.
Lead And Lead Compounds
Lead And Lead Compounds concentrations are roughly unchanged from 2018.
Mercury And Mercury Compounds
Mercury And Mercury Compounds concentrations are roughly unchanged from 2018.
Who Lives Next To This Facility
Nolan County County, TX (no Census block groups within 3 miles — falling back to containing county): a population of 14,657. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 (5-year), county-level fallback. 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.