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Wirth Associates contracted with the Museum of Northern Arizona to conduct an archaeological impact study of a proposed Salt River Project Palo Verde Nuclear Generating Station Routing Alternate to Westwing Receiving Station. This study delineates areas with three levels of potential site occurence for the project area, and investigates potential effects on the cultural resources of the alternative corridors proposed by Salt River Project. A short data gathering phase, prior to field work, compiled information from site inventory files at the Museum of Northern Arizona and the State Parks Department. During the field investigation phase one of the routes was non-randomly sampled. This report details the scope of the archaeological study, including earlier Museum investigations, describes the typological framework and regional context, and assesses the research potential of the existing archaeological resource base. The proposed corridor segments and their potential sensitivity on the resource base is described, and general discussion for routing alternatives are made.

At the request of the United States Bureau of Reclamation, an archaeological survey was conducted by the Department of Anthropology, Arizona State University, for the purpose of granting archaeological clearance along the route of the proposed Liberty-Parker 230 KV Transmission Line and two 115 KV transmission lines which will supply power to the Central Arizona Project's Little Harquahala and Bouse Hills pumping plants. Funds for this purpose were provided by the Arizona Archaeological Center of the National Park Service, and field work was completed during between June 18 and 29, 1973. The survey was conducted on foot or from a slow moving vehicle. Only two archaeological sites were identified, neither of which were recommended for further investigation because they would not be affected by the construction of the proposed transmission lines.

In anticipation of the construction of the Granite Reef Aqueduct, a component of the Central Arizona Project, the Bureau of Reclamation, Phoenix Area Office contracted with Arizona State Museum to conduct a cultural resources inventory of the aqueduct right-of-way to evaluate the potential effect of the project to archaeological sites. Arizona State Museum archaeologists conducted the survey in the summer of 1972 and identified 32 archaeological sites (27 prehistoric and 5 historic) and 57 isolated occurrences. Additional investigations, including surface collection and excavation, were recommended for 16 prehistoric sites and none of the historic sites.

In March, 1968, Prescott College, under contract with the Archeological Salvage Program, a division of the National Park Service, conducted a reconnaissance of 148 miles of the feasibility alignment of the proposed Granite Reef Aqueduct in west-central Arizona, stretching from Parker Dam on the Colorado River to the Agua Fria River, north of Phoenix. The reconnaissance was undertaken in support of the development of an Environmental Impact Statement for the Granite Reef Aqueduct to identify any cultural resources that may be affected by the proposed action. Primary investigation was made by helicopter, supported by ground survey at key points. No prehistoric or historic sites were identified.