The 2018 Stahl Endowment provided generous funding for the investigation of archaeological materials from the West Berkeley Shell Mound (CA-ALA-307) curated in the Phoebe A. Hearst Museum of Anthropology (PAHMA). As one of the largest shell mounds in the San Francisco Bay Area, it was excavated in the 1950s by Robert Heizer employing a coarse-grained methodology (shovel broadcast). Our work is focusing on 33 bulk sediment samples from two Units (E-6, I-5) collected at 1 foot intervals from the surface to the bottom of the excavation. The Stahl Endowment provided the funding for running 25 AMS dates from organic materials (bark, twigs) from all 17 levels excavated in Unit I-5 (1 to 17 feet) and 8 levels from Unit E-6 (1-8 feet). The radiocarbon samples were submitted to the Keck Carbon Cycle AMS Facility at UC Irvine. The calibrated AMS age (2-sigma) was based on the IntCal13 Radiocarbon Age Calibration Curve. The calibrated dates are providing the baseline for generating a new, refined chronology for the site. The work funded by the Stahl Endowment is an important first phase of a broader investigation of the West Berkeley Shell Mound that is on-going by associates of the Archaeological Research Facility, the Anthropology Department, and the PAHMA at UC Berkeley and the Museum Studies Program, San Francisco State University . The full chronology of the site will be included in an upcoming publication.