National Historic Trails Geophysical Investigation

Contractor shall: conduct a background files search of the section encompassing the possible gravesite and tiered geophysical investigations of square meters encompassing the cairn, a linear magnetometer investigation (fluxgate gradiometer or other appropriate geophysical technique that the contractor, based on their experience and that they determine possesses the greatest efficacy for identification of unmarked burials in areas with sagebrush cover); and site documentation, evaluation, and updates as needed based on the results of the geophysical investigations.

The boundaries of the geophysical investigation areas can be adjusted or expanded to better define anomalies in Area margins, as allowed by the scope and budget. Contractor shall adhere to Class III inventory and reporting standards as defined by the Wyoming State Historic Preservation Office Format, Guidelines, and Standards for Class II and III Reports. Adherence to Wyoming SHPO Metadata GIS and Photographic Standards is required.

All diagnostic artifacts shall be described in detail and photographed with an indicated scale. Contractor shall complete Wyoming Cultural Property Forms with NRHP eligibility determinations for all newly discovered cultural resources.

Site forms for the Finetta White Garrett Gravesite and any other unmarked gravesite shall be created and/or updated with any new information that is derived from the results of the geophysical investigations along with documentation that the descendants are willing to provide to the subconsultant. The contractor must possess a current BLM Wyoming Cultural Resource Use Permit (CRUP) for this project-specific work, and will follow the permit stipulations.

The contractor shall also adhere to Wyoming BLM guidelines relating to cultural resources on BLM administered lands and Wyoming State Historic Preservation Offices Guidelines for Archaeology and Historic Preservation.

The contractor must notify the BLM KFO Authorized Officer, by telephone and with written confirmation, immediately upon the discovery of Native American affiliated human remains, funerary objects, sacred objects, or objects of cultural patrimony (as defined in 43 CFR 10.2) and must immediately stop any activities connected with such discovery and make a reasonable effort to protect the discovered remains or objects.

Period of Performance: 06/01/2025 - 12/31/2025