Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
BHP COPPER INC. MIAMI OPERATION
HWY 60 TO MIAMI UNIT RD, MIAMI, AZ, 85539
Parent company: BHP BILLITON
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 | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Copper compounds | Lead compounds | Mercury compounds | Total (lbs) | |
| 2013 | 2,455 | — | 1 | — | 2,456 | |
| 2012 | 2,500 | — | 1 | — | 2,501 | |
| 2011 | 2,400 | — | 1 | — | 2,401 | |
| 2010 | 2,400 | — | 1 | — | 2,401 | |
| 2009 | 2,500 | — | 1 | — | 2,501 | |
| 2008 | 2,500 | — | 1 | — | 2,501 | |
| 2007 | 2,500 | — | 1 | — | 2,501 | |
| 2006 | 2,500 | — | 1 | — | 2,501 | |
| 2005 | 2,500 | — | — | — | 2,500 | |
| 2004 | 4,300 | — | — | — | 4,300 | |
| 2003 | 4,300 | — | — | — | 4,300 | |
| 2002 | 4,350 | — | — | — | 4,350 | |
| 2001 | 4,300 | 7 | 1 | — | 4,308 | |
| 2000 | 79,000 | 4 | — | 0 | 79,004 | |
| 1999 | 79,000 | 13 | — | — | 79,013 | |
| 1998 | 11,800 | — | — | — | 11,800 | |
▎ 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.