Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SWAN RD. ASPHALT PLANT
9301 S. SWAN RD., TUCSON, AZ, 85756
Parent company: GRANITE CONSTRUCTION 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 | Polycyclic aromatic compounds | Total (lbs) | ||||
| 2024 | 1,115 | 1,115 | ||||
| 2023 | 1,440 | 1,440 | ||||
| 2022 | 1,686 | 1,686 | ||||
| 2021 | 1,273 | 1,273 | ||||
| 2020 | 19,538 | 19,538 | ||||
| 2019 | 12,108 | 12,108 | ||||
| 2018 | 1,437 | 1,437 | ||||
| 2017 | 507 | 507 | ||||
▎ 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.