418 S. Leroux St. Phase 2 Cultural Resource Study

Approve the Phase 2 Cultural Resource Study and additional LiDAR (Light Detection and Ranging) documentation, and approve the additional mitigation of creating an interactive 3D model map.

Approve the Phase 2 Cultural Resource Study and additional LiDAR documentation as meeting the required research and documentation required for a Phase 2 Cultural Resource Study and approve the additional mitigation of creating an interactive 3D model map.

The house at 418 S. Leroux St. is a contributor to the Flagstaff Southside Historic District listed on the National Register of Historic Places. The historic-age outbuilding on the parcel has not been previously evaluated. The property owner plans to demolish the existing structures and redevelop the parcel. A Phase 2 Cultural Resource Study is required when major impacts (including demolition) are proposed for a significant resource that has integrity and when no other mitigation measures are proposed that would maintain the significance and integrity of the resource. A Phase 2 Cultural Resource Study includes all of the contents of a Phase 1 Cultural Resource Study plus complete text descriptions, as-built plans, and archival grade photography that fully document all physical aspects of the resource, including its setting.

The submitted Phase 2 Cultural Resource Study includes the required study elements as well as LiDAR scans of the existing structures. The Phase 2 report, as-built plans, and a photo log of the archival photographs are attached to the agenda. Due to the large file sizes and format, the archival photographs and LiDAR scans are not attached to the agenda and are instead available by request from the Heritage Preservation Officer. 

As an additional mitigation step, Cornerstone proposes to LiDAR scan the building materials during demolition to document and preserve the structural and architectural details. The resulting interactive 3D model will illustrate construction methods, materials, and historical context, and may be shared with the City of Flagstaff for public access and potential use in documenting other Southside historic structures.

1. The Commission can require additional research, documentation, or mitigation measures as conditions of approval.
2. The Commission can continue to a date certain and require a submittal including additional research, documentation, or mitigation measures prior to acceptance.

None.