Martin Marietta San Diego Aggregates LLC - Miramar Hma
Total reported releases 1 lb fell meaningfully year over year (-33%).
9236 HARRIS PLT RD, San Diego, California · 324121 · Petroleum · operated by Martin Marietta Materials 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
Lead compounds
Lead compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Polycyclic aromatic compounds
Polycyclic aromatic compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Benzo[g,h,i]perylene
Benzo[g,h,i]perylene 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 (13 Census block groups, population-weighted demographics): a population of 26,333. 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.