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Freeport Sierrita Inc. | VRP Site


6200 W. Duval Mine Road, Green Valley, AZ

Acceptance Into Voluntary Remediation Program (VRP):

August 15, 2007

Contaminants of Concern (COCs):

  • Uranium
  • Metals

Affected Media:

  • Soil
  • Groundwater

What Are My Health Risks?

For Soil | There is little to no health risk unless there is contact with skin or ingestion of contaminated soil.

For Groundwater | If you are connected to a Public Water System (PWS) there is little to no risk of impact from exceedances because the water is filtered through the PWS for residential and business use. | View Drinking Water Notices > 

If you have a private well in the vicinity of the exceedance, we encourage you to test the well water.
Not sure what to test for? | 
Learn More > 

Site Summary:

  • Extensive soil characterization has been completed
  • No uranium source identified in soil during investigations
  • A Sulfate Mitigation Order and monitored Aquifer Protection Permit (APP) wells are preventing offsite groundwater impacts
  • Baseline Human Health Risk Assessment received in November 2018.
  • ADEQ hosted a kick-off meeting in December 2018 for the formal review of the Baseline Human Health Risk Assessment (BHHRA). Review completed by ADEQ in March 2019.
  • Revised BHHRA expected in second quarter 2019.