Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTERN EMULSIONS TUCSON EMULSIONS PLANT
3450 E 36TH ST, TUCSON, AZ, 85713
Parent company: IDAHO ASPHALT SUPPLY 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 | Benzo[g,h,i]perylene | Total (lbs) | |||
| 2024 | 0 | — | 0 | |||
| 2023 | 1 | — | 1 | |||
| 2022 | 1 | — | 1 | |||
| 2021 | 1 | — | 1 | |||
| 2020 | 1 | — | 1 | |||
| 2019 | 1 | — | 1 | |||
| 2018 | 1 | — | 1 | |||
| 2017 | 1 | — | 1 | |||
| 2016 | 1 | — | 1 | |||
| 2015 | 52 | 0 | 52 | |||
| 2014 | 54 | 0 | 54 | |||
| 2013 | 53 | 0 | 53 | |||
| 2012 | 56 | 0 | 56 | |||
| 2011 | 52 | — | 52 | |||
| 2010 | 53 | — | 53 | |||
| 2009 | 55 | — | 55 | |||
| 2008 | 54 | — | 54 | |||
| 2007 | 55 | — | 55 | |||
| 2006 | 58 | — | 58 | |||
▎ 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.