PC-2026-08 - Laserfiche WebLink

City of Pleasanton—Hidden Canyon Residences and Preserve Project CEQA Findings of Fact and Statement of Overriding Considerations FirstCarbon Solutions 39 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/FOF/21480016 Pleasanton Hidden Canyon Residences and Preserve Project FOF.docx of inadvertent discovery, including who to contact and appropriate avoidance measures until the find(s) can be properly evaluated and any other appropriate protocols. In the event construction crews are phased in, additional training will be conducted for new construction personnel. MM GEO-6c During ground-disturbing construction activities, full time paleontological monitoring shall be conducted by a qualified Paleontological Resource Monitor meeting SVP standards and best practices, under the supervision of the Principal Paleontologist. Monitoring shall be restricted to areas that intrude into the Claremont shale and Monterey formations (i.e., generally below 2 feet) and undisturbed subsurface areas of marine sedimentary rock units of Miocene-age. In the event potentially significant paleontological resources are encountered during ground-disturbing activities, construction-related activities within 50 feet of the find shall stop. No excavation or other disturbances shall occur within the buffer zone until the find has been evaluated by the project Paleontologist. The Paleontologist shall collect samples of sediments which are likely to contain the remains of small fossil invertebrates, vertebrates, or microfossils. If the resources are found to be significant, protocol for collecting and processing sediments and specimens, as outlined in the Paleontological Resource Impact Mitigation Monitoring Program (PRIMMP), is to be implemented. The Paleontologist shall have the power to temporarily halt or divert grading equipment to allow for removal of abundant or large specimens. If no significant specimens are encountered during ground- disturbing activities, full time monitoring can be reduced to spot-checking or suspended entirely, at the discretion of the qualified professional Paleontologist and the City/Lead Agency. MM GEO-6d The Paleontological Monitor shall keep a daily log and photographic record of all activities involving ground disturbance during the construction phase, as well as adhering to the procedures outlined in the Paleontological Resource Impact Mitigation Monitoring Program (PRIMMP). The Monitor’s daily activities, findings, etc. shall be submitted to the Principal Paleontologist. All relevant details and findings shall be summarized in a report that shall be prepared at the completion of ground-disturbing activities and submitted to the City/Lead Agency and UCMP repository. Additionally, specimens shall be identified and curated into a permanent accredited repository (such as the University of California Museum of Paleontology [UCMP]) with permanent curation and retrievable storage. Facts in Support of Findings: No fossil localities within the project boundaries during the University of California Museum of Paleontology (UCMP) Locality Search Online Database and records search conducted on March 25, 2025. Additionally, surficial deposits on most of the project site consist of colluvium and residual soils ranging from approximately 2-11 feet in depth, which have low paleontological potential, subsurface conditions consist of high paleontological potential rock units from the Claremont shale member and the Monterey Formation, which have been associated with vertebrate and invertebrate localities in the geographic region. Therefore, subsurface excavations