Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTERN STATES PETROLEUM
450 S 15TH AVE, PHOENIX, AZ, 85007
Parent company: NA
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 | Methanol | Methyl tert-butyl ether | 1,3-Butadiene | Toluene | Xylene (mixed isomers) | Total (lbs) |
| 2022 | 500 | — | — | — | — | 501 |
| 2021 | 1,972 | — | — | — | — | 1,973 |
| 2020 | 1,276 | — | — | — | — | 1,277 |
| 2018 | 1,400 | — | — | 116 | 35 | 1,551 |
| 2017 | 1,433 | — | — | — | — | 1,434 |
| 2016 | 1,372 | — | 1,124 | 120 | 37 | 2,754 |
| 2015 | 1,167 | — | 1,130 | 127 | 39 | 2,570 |
| 2014 | 1,497 | — | 1,338 | 145 | 47 | 3,150 |
| 2013 | 1,663 | — | 1,290 | 262 | 82 | 3,514 |
| 2012 | 1,440 | — | 1,269 | 192 | 63 | 3,131 |
| 2011 | 1,478 | — | 1,232 | 203 | 64 | 3,147 |
| 2010 | 1,421 | — | 1,106 | 190 | 59 | 2,929 |
| 2009 | 1,338 | — | 1,460 | 208 | 65 | 3,245 |
| 2008 | 1,476 | — | 1,301 | 181 | 54 | 3,161 |
| 2007 | 1,861 | — | 277 | 161 | 48 | 2,494 |
| 2006 | 1,552 | — | 550 | 200 | 86 | 2,565 |
| 2005 | 1,691 | 2,776 | — | 157 | 47 | 4,802 |
| 2004 | 1,524 | 2,543 | — | 1,223 | 1,215 | 8,490 |
| 2003 | 2,883 | 4,335 | — | 2,084 | 2,072 | 14,901 |
| 2002 | 2,135 | 3,104 | — | 1,492 | 1,484 | 10,740 |
| 2001 | 2,735 | 1,714 | — | 824 | 820 | 7,317 |
| 2000 | 1,300 | — | — | — | — | 1,300 |
| 1999 | 800 | — | — | — | — | 800 |
| 1998 | 750 | — | — | — | — | 850 |
| 1997 | 860 | — | — | — | — | 860 |
| 1996 | 938 | — | — | — | — | 938 |
| 1995 | 667 | — | — | — | — | 667 |
▎ 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.