Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
MARTIN MARIETTA ARIZONA LLC - DOBSON PLANT
9595 E MCKELLIPS RD, SCOTTSDALE, AZ, 85256
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) | Manganese | Lead | Lead compounds | Lead And Lead Compounds | Total (lbs) |
| 2023 | — | — | 0 | — | — | 0 |
| 2022 | — | — | 0 | — | — | 0 |
| 2021 | 219 | — | 0 | — | — | 219 |
| 2020 | 256 | — | 0 | — | — | 256 |
| 2019 | 306 | — | — | — | 0 | 306 |
| 2018 | 240 | — | — | — | 0 | 240 |
| 2017 | 118 | — | — | 0 | — | 118 |
| 2016 | 202 | — | — | 0 | — | 202 |
| 2015 | 258 | — | 2 | — | — | 261 |
| 2014 | 247 | 84 | 2 | — | — | 333 |
| 2013 | — | — | — | 0 | — | 0 |
| 2006 | — | — | 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.