Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PATTERSON LABS INC (DBA PATTERSON W)
4940 W JEFFERSON ST, PHOENIX, AZ, 85043
Parent company: JJAM
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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Chlorine | Total (lbs) | |||
| 1995 | — | 10 | 10 | |||
| 1994 | 255 | 10 | 265 | |||
| 1993 | 255 | 10 | 265 | |||
| 1992 | 255 | 10 | 265 | |||
| 1991 | 255 | 10 | 265 | |||
| 1990 | 250 | 5 | 255 | |||
| 1989 | 155 | 6 | 161 | |||
| 1988 | 299 | 8 | 307 | |||
▎ 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.