Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
COLUMBIAN CHEMICALS CO
12701 UNITED ST, MOJAVE, CA, 935010760
Parent company: PHELPS DODGE CORP
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 | Carbonyl sulfide | Carbon disulfide | Total (lbs) | |||
| 1989 | — | 26,522 | 26,522 | |||
| 1987 | 26,735 | — | 26,735 | |||
▎ 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.