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II. CONTENTS OF THE HISTORIC RESOURCES INVENTORY

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state highway maps showing existing facilities, and on the latest version of the state's comprehensive thoroughfare plan or other document locating future highway proposals. By so doing, the highway department will be introduced to certain basic inventory techniques and will have a firsthand knowledge of the location of the major historic resources in the state. In exchange for this data, the state highway department should submit, on a continuing basis, the following materials as soon as they are available to the State Historic Preservation Officer and the State· Historic Preservation Agency:

a. Advance notice of all scheduled highway department projects, with preliminary time schedules if possible.

Preliminary corridor plans showing all alternative corridor locations, with aerial mosaics if available.

Construction plans and profiles of projects in the design stage.

d. Notification of any preliminary findings made by the highway department employees regarding unrecorded historic sites.

e. Construction time schedules of all funded highway projects, to permit the scheduling of emergency inventory work.

If possible, the highway department should combine information where several projects are scheduled for the same geographic area, to facilitate review and allow for inventorying the area as one project.

While the initial meetings and contacts to this point in the highway planning process have been between the director of the state highway department or his delegate and the State Historic Preservation Officer or the director of the State Historic Preservation Agency, the actual inventory work should be coordinated with the project or location engineer in charge of the highway proposal under review. This engineer will be the one representative of the highway

department most familiar with the study area and the proposed highway facility and will be continuously involved with the project from pre-corridor selection through final design. The project engineers should be assigned the responsibility of working with the staff member of the State Historic Preservation Agency, or its consultant, charged with preparing the Historic Resources Inventory, and should take an active role in its completion.

With the preliminary exchange of data and the coordinating of personnel of the two affected departments, the inventory process should begin.

B. Pre-Corridor Selection Phase

The initial phase of the Historic and Cultural Resources Inventory should be undertaken as soon as the highway department has determined the need for a new or improved highway facility. If the inventory is to be of maximum benefit, highway decision making should not have proceeded beyond the stage of identifying the two terminal points of the proposed facility. The highway department should immediately notify the state preservation agency that such a project is under consideration and request that a "Pre-Corridor Selection Phase Historic Resources Inventory" be initiated. Such an inventory will focus on defining the overall visual character and historic significance of the study area as a whole. The study area boundaries should be determined by the highway department to include the extreme geographic limits of all potential highway corridors. The pre-corridor selection inventory should be considered as a broadbrush survey of the area relying primarily on published sources, official records and existing architectural and historic surveys. The inventory should result in a preliminary catalog of the historic and cultural resources in the study area, listing all sites, buildings, structures, districts and areas of potential as well as known historical significance.

1. Inventory Methodology

The purpose of the inventory during the precorridor selection phase is simply to identify and map historic and cultural sites to alert the highway planners at an early stage in the decision making process of their existence. In the interest of time and scheduling, no qualitative evaluation of the individual sites should be attempted during this phase, except that the listing of any site in the National Register will automatically establish its historic and architec

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The above data can be obtained through two primary sources, archival research and a preliminary reconnaissance survey: Archival research should begin with the listings of all properties in the study area in the National Register of Historic Places, available from the individual State Historic Preservation Officer or the Office of Archeology and Historic Preservation, National Park Service, U.S. Department of the Interior. Concerned individuals and agencies should consider subscribing to the Federal Register, or insist that the state library system subscribe. It is imperative that such lists be confirmed by the state agency concerned with nominating properties to the Register, as the Register is added to at regular intervals, and new properties may not have been added to the official list. The catalogs of the Historic American Buildings Survey, available in some major libraries or from the Department of the Interior, should also be consulted to identify properties inventoried as a part of this ongoing research and documentation program. Similarly, listings of the Historic American Engineering Record, and any available publications or records of the Society for American Archeology, Society for Historical Archeology, Society for Industrial Archeology and the American Association for State and Local History should be reviewed. Addresses of such organizations are provided in Appendix M.

Survey records, field reports and other studies prepared by any state or local preservation body should also be reviewed at this stage, especially as

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With the preliminary field work completed and the inventory and maps updated to include any additional findings, the pre-corridor selection inventory package should be reviewed by the State Historic Preservation Officer or his delegate, the State Historic Preservation Agency and local preservation groups and individuals from the study area. This review might take the format of an unofficial and informal hearing regarding the inventory findings, convened by the SHPO to determine professional adequacy and completeness. This preliminary meeting can be used to identify problems and develop solutions before they become major issues.

After updating the findings to reflect suggestions made at this meeting, the SHPO should signify his acceptance and official recognition of the inventory by signing the report and maps. Report copies should then be forwarded to the state highway department, the State Historic Preservation Agency, statewide planning agency, the regional offices of the U.S.

Departments of Transportation and Housing and Urban Development, the U.S. Department of the Interior and the Advisory Council on Historic Preservation. (In major metropolitan areas, it should also be forwarded to the responsible regional planning agency established and recognized under the requirements of Section 134 of the Federal Aid Highway Act of 1962, U.S.C. Title 123 Sec. 134). Additional copies should be made available for public review at some convenient location in the study area, with adequate notice made as to its availability. This distribution program will be followed for both of the inventory phases.

With the approval of the SHPO, the pre-corridor selection inventory should be incorporated as part of the public hearing data as outlined in the Department of Transportation Policy and Procedure Memorandum 20-8, explained in Part Two, and should be considered as the official Inventory of Historic Sites for the "Corridor Public Hearing." The preface to the inventory report should clearly state that the findings are preliminary and for use during this first public hearing only. The notice should also state that a more detailed inventory of the approved highway corridor will be made available for review before the "Highway Design Hearing" required under PPM 20-8, Public Hearing and Location Approval.

C. Preliminary Route Selection Phase

This phase of the Historic and Cultural Resources Inventory process is concerned with a detailed, comprehensive survey of the approved route location, or corridor. The inventory will contain both factual and evaluative material and will build on the previously completed pre-corridor selection inventory. Once a specific highway route, or a series of alternatives, has been selected, the resulting corridor should be intensively inventoried, in some cases on a block by block basis. A greater emphasis will be placed on identifying individual buildings, districts and sites; their architectural, historic, cultural and visual significance to the nation, state and locality; and the potential environmental impact on them resulting from proposed highway construction projects. Specific properties and groupings identified earlier will be resurveyed in greater detail, photographed and assigned a preservation priority. Priorities will also be assigned to districts, concentrations and entire neighborhoods of significance.

Review of Survey Findings

Recognizing that no qualitative judgements can be assigned to isolated structures, sites or areas

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