Siemens Carbon Regeneration Facility
(formerly US Filter Westates)

National Historic Preservation Act

As part of the permit process at Siemens, EPA must comply with the National Historic Preservation Act (NHPA). The NHPA requires EPA to identify any historic properties that may be affected by operations at Siemens, and to take those historic properties into consideration during our draft permit decision. The term "historic properties" includes properties of traditional religious and cultural importance to an Indian Tribe. For more information about the National Historic Preservation Act, see the “Citizen’s Guide to Section 106 Review.” EPA worked with four consulting parties during the NHPA process: The Colorado River Indian Tribes, the Arizona State Historic Preservation Officer, the Town of Parker, and Siemens. EPA also notified 13 Tribes and 5 local, state, and federal agencies asking whether they were interested in participating in the process as consulting parties.

On January 31, 2007, EPA issued a public notice designating an Area of Potential Effects on historic properties around Siemens. This is one of the first steps in the NHPA process. This public notice also requested information on any historic properties within the Area of Potential Effects, and whether there may be adverse effects to the historic properties from EPAâ€™s draft permit decision at Siemens. On March 27, 2007, EPA extended the public comment period for information on any historic properties within the Area of Potential Effects, and whether there may be adverse effects to the historic properties within the Area of Potential Effects from EPAâ€™s draft permit decision at Siemens. EPA received comments on the identification and impacts on historic properties within the Area of Potential Effects under the NHPA. EPA is currently reviewing the comments and preparing a response.

Public Notices for the Identification of Historic Properties

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Public Notice for Designation of Area of Potential Effects on Historic Properties and Request for Information about Historic Properties (January 31, 2007) (PDF) (1 page, 126K) Comment Period has ended.
Map of Area of Potential Effects (January 2007) (PDF) (1 page, 9M)

Attached below are selected documents from EPA’s administrative record for the designation of the Area of Potential Effects. For access to the full administrative record, please contact David Cooper at the phone or email contacts noted below.

Comments Received during Public Comment Period for Proposed Area of Potential Effects