Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MARTIN MARIETTA SAN DIEGO AGGREGATES LLC - MIRAMAR HMA
9236 HARRIS PLT RD, SAN DIEGO, CA, 92145
Parent company: MARTIN MARIETTA MATERIALS INC
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Aluminum (fume or dust) | Polycyclic aromatic compounds | Lead compounds | Lead And Lead Compounds | Benzo[g,h,i]perylene | Total (lbs) |
| 2024 | — | 0 | 1 | — | 0 | 1 |
| 2023 | — | 0 | 1 | — | 0 | 1 |
| 2022 | — | 0 | — | 0 | 0 | 1 |
| 2021 | 23 | 0 | — | 0 | 0 | 24 |
| 2020 | — | 0 | — | — | 0 | 0 |
| 2019 | — | 0 | — | — | 0 | 0 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.