Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MISSION VALLEY ROCK
7999 ATHENOUR WAY, SUNOL, CA, 94586
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) | Zinc compounds | Polycyclic aromatic compounds | Lead And Lead Compounds | Lead compounds | Total (lbs) |
| 2024 | 2 | 4 | 0 | — | 1 | 8 |
| 2023 | — | 4 | 1 | — | 1 | 6 |
| 2022 | — | 5 | 0 | 2 | — | 7 |
| 2021 | — | — | 1 | 2 | — | 3 |
| 2020 | 660 | — | 1 | 2 | — | 663 |
| 2019 | 488 | — | 1 | 2 | — | 490 |
| 2018 | 696 | — | 1 | 2 | — | 699 |
| 2017 | — | — | 0 | — | 0 | 1 |
| 2016 | — | — | 1 | — | — | 1 |
| 2015 | — | — | 0 | — | — | 1 |
| 2014 | — | — | 1 | — | — | 1 |
| 2013 | — | — | 1 | — | — | 1 |
| 2012 | — | — | 0 | — | — | 0 |
| 2011 | — | — | 0 | — | — | 0 |
| 2010 | — | — | 0 | — | — | 0 |
| 2009 | — | — | 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.