Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CYPRUS TOHONO CORP
32 MILES S OF CASA GRANDE HWY 15, CASA GRANDE, AZ, 852305009
Parent company: FREEPORT-MCMORAN CORP
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 | Copper compounds | Lead compounds | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Propylene | Copper | Total (lbs) |
| 2008 | 13,000,250 | 394,007 | — | — | — | 13,394,257 |
| 2007 | 205,625 | 6,732 | — | — | — | 212,357 |
| 2006 | — | 7,248 | — | — | — | 7,248 |
| 2005 | — | — | 2,100 | 18 | — | 2,119 |
| 1999 | — | 5 | 264 | — | 5 | 274 |
| 1998 | 5 | — | 1,905 | — | — | 1,910 |
▎ 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.