Letter Report for a Phase II of Ten Sites at Tyndall Air Force Base

In accordance with the workplan approved by Argonne Labs, The NDN Companies (NDN) and Stantec completed Phase II testing of 10 sites within Tyndall Air Force Base (AFB). This letter report is comprised of three sections: Section 1 provides a brief overview of the level of effort conducted. Section 2 includes descriptions for each site, including Florida Master Site File (FMSF) number, site type, datum and GPS coordinates, current completed work, and a brief overview of recovered cultural material. Work was completed during three mobilizations with NDN and Stantec cultural staff, beginning survey efforts the week of April 15 through April 24, 2024. During the first mobilization, staff completed shovel testing, mapping, and test unit (TU) excavations at sites 8BY120, 8BY1372, and 8BY1373. These sites were prioritized due to potential access issues associated with military training for their proximity to the Silver Flag Training Area. During the second mobilization (April 29 through May 8, 2024), NDN and Stantec accomplished shovel testing, mapping, and test unit excavations at site 8BY1379, 8BY1380, 8BY1378, and 8BY1384. The final rotation occurred between May 13 and May 22, 2024, and targeted the completion of shovel testing, mapping, and TU excavations at sites 8BY1796, 8BY1864, and 8BY2388.