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Cyprus Tohono Corporation Mine, Tohono O’odham Nation, Arizona
  • Published Date:
    December 8, 2014
  • Language:
    English
Filetype[PDF-2.54 MB]


Details:
  • Corporate Authors:
    United States. Agency for Toxic Substances and Disease Registry. Division of Community Health Investigations. Western Branch.
  • Description:
    Public comment version

    Comment period ends: March 6, 2015

    The US Environmental Protection Agency (EPA) and the Tohono O’odham Nation (TON) requested the Agency for Toxic Substances and Disease Registry (ATSDR) evaluate human exposures and potential public health impacts at the Cyprus Tohono Mine Site and advise on actions needed to reduce exposures, if necessary. The site is a copper mine located on the Tohono O’odham Nation, 32 miles south of Casa Grande, Arizona. While the mine is currently inoperative, the Cyprus Tohono Corporation (CTC) is evaluating whether to resume mining activities. ATSDR used environmental data collected by EPA and input from tribal officials and community members to evaluate a number of exposure scenarios and draw the following conclusions.

    A health consultation is a verbal or written response from ATSDR or ATSDR’s Cooperative Agreement Partners to a specific request for information about health risks related to a specific site, a chemical release, or the presence of hazardous material. In order to prevent or mitigate exposures, a consultation may lead to specific actions, such as restricting use of or replacing water supplies; intensifying environmental sampling; restricting site access; or removing the contaminated material.

    In addition, consultations may recommend additional public health actions, such as conducting health surveillance activities to evaluate exposure or trends in adverse health outcomes; conducting biological indicators of exposure studies to assess exposure; and providing health education for health care providers and community members. This concludes the health consultation process for this site, unless additional information is obtained by ATSDR or ATSDR’s Cooperative Agreement Partner which, in the Agency’s opinion, indicates a need to revise or append the conclusions previously issued.

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