Heraeus Precious Metals Na LLC
Total reported releases 19k lb rose by an order of magnitude year over year (+1110%). Total releases concentrations have more than doubled since 2010.
13429 ALONDRA BLVD, Santa Fe Springs, California · 331492 · Primary Metals · operated by Heraeus 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
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations are up 12% since 2016.
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.
Ammonia
Ammonia concentrations have more than doubled since 2010.
Nitric acid
Nitric acid concentrations have fallen 21% 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.
Hydrazine
Hydrazine concentrations are roughly unchanged from 2010.
Formic acid
Formic acid volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Who Lives Next To This Facility
Within 3 miles of this facility (135 Census block groups, population-weighted demographics): a population of 203,501. Why we surface this →
Low-income
People of color
Under age 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.