The Arizona projects, according to the Tucson Sentinel, would mean construction along three protected wilderness areas — the 330,000-acre Organ Pipe Cactus National Monument, Cabeza Prieta National Wildlife Refuge and the 2,369-acre San Bernardino National Wildlife Refuge. The Organ Pipe Cactus National Monument has been declared an International Biosphere Reserve by the United Nations, and the San Bernardino National Wildlife Refuge was established to protect a migratory-corridor wetland for wildlife moving between Arizona and New Mexico.