14 ATTACHMENT 6 - Appendix A - E

City of Pleasanton–Spotorno Ranch Reduced Development Project Initial Study/Consistency Checklist Environmental Checklist FirstCarbon Solutions 91 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480021/Consistency Checklist/21480021 Spotorno Ranch Consistency Checklist ScreenCheck.docx Archaeologist has an opportunity to evaluate the find and make recommendations for mitigation, if warranted. Timing: During construction. Proposed refinements to mitigation language The following refinements to MM K2 in the 1998 HVSP FEIR, as it relates to the Spotorno Project, are proposed to be included as a condition of approval to provide enhanced protection to cultural and paleontological resources: Because of the project site’s archaeological and paleontological sensitivity, a cultural resources monitor who meets the Secretary of Interior’s Professional Qualification Standards for archaeology, and has experience identifying paleontological resources shall be present during the initial phase of ground disturbance in order to check for the inadvertent exposure of archaeological and paleontological materials. Once soils are made visible in areas of proposed ground disturbance, the monitor will assess the likelihood that they contain archaeological and/or paleontological resources and determine what additional monitoring, if any, will be required. In the event a potentially significant resource is encountered during subsurface earthwork activities, all construction activities within a 100-foot radius of the find shall cease and workers should avoid altering the materials until the Archaeologist has evaluated the situation. The applicant shall include a standard inadvertent discovery clause in every construction contract to inform contractors of this requirement. Potentially significant resources consist of but are not limited to stone, bone, glass, ceramics, fossils wood, or shell artifacts, or features including hearths, structural remains, or historic dumpsites. The Archaeologist shall make recommendations concerning appropriate measures that will be implemented to protect the resource, including but not limited to excavation and evaluation of the finds in accordance with Section 15064.5 of the CEQA Guidelines. Any previously undiscovered resources found during construction within the project site shall be recorded on appropriate Department of Parks and Recreation (DPR) 523 forms and will be submitted to the City of Pleasanton, the Northwest Information Center, and the California Office of Historic Preservation (OHP), as required. Conclusion The 1998 HVSP FEIR found that impacts to cultural resources would be less than significant with the incorporation of mitigation measures. Subsequent studies in 2018 and 2021 generally confirm the conclusions of the 1998 HVSP FEIR, and also indicate that the protections afforded by MM K2 could be refined to include monitoring of initial ground-disturbing activities, to provide enhanced protection for cultural and paleontological resources. With implementation of the existing 1998 HVSP FEIR mitigation, along with the proposed refinements to be included as a condition of approval of the proposed project, no new significant impacts to cultural resources would occur. The conclusions from the 1998 HVSP FEIR remain unchanged.