14 ATTACHMENT 6 - Appendix A - E

City of Pleasanton–Spotorno Ranch Reduced Development Project Environmental Checklist Initial Study/Consistency Checklist 102 FirstCarbon Solutions https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480021/Consistency Checklist/21480021 Spotorno Ranch Consistency Checklist ScreenCheck.docx f) Destruction of Paleontological Resource or Unique Geologic Feature Would the project: Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? This question was not included in the 1998 HVSP FEIR. No determination was made in the 1998 HVSP FEIR regarding the level of significance related to paleontological resources or unique geologic features. On February 23, 2018, consulting paleontologist Dr. Ken Finger performed a records search on the University of California of Paleontology (UCMP) database for the Spotorno Ranch project site in Alameda County. Dr. Finger’s report concluded that the project site is situated upon Pleistocene alluvium, early Pleistocene and/or Pliocene sediments, and Miocene sedimentary rocks. All three of these units have high potential of yielding significant paleontological resources. The UCMP database lists 64 Pleistocene vertebrate fossil localities in Alameda County, which have yielded a total of 1071 specimens. The project area should therefore be considered moderate to highly-sensitive for undiscovered paleontological resources. Subsurface construction activities associated with the proposed project, such as grading and trenching, could result in a significant impact to paleontological resources, if encountered. Paleontological resources may include but are not limited to fossils from mammoths, saber-toothed cats, rodents, reptiles, and birds. Accordingly, a refinement is proposed for MM K2, which covers inadvertent discovery of archaeological resources; the refinement would be included as a condition of approval and would apply to inadvertent discovery of paleontological resources. Implementation of MM K2, as enhanced by a proposed condition of approval, would reduce potential impacts to paleontological resources that may be discovered during project construction. With the incorporation of the proposed refinement to MM K2, the proposed project would not result in any peculiar effects and would not result in new or more severe impacts related to paleontological resources or unique geologic features beyond what was previously analyzed in the 1998 HVSP FEIR. FEIR Mitigation Measures The following site development standards and design guidelines address the geology and soils of the HVSP and were adopted as mitigation measures as part of the 1998 HVSP FEIR (Appendix A). MM H1 Individual development projects proposed within the Specific Plan Area shall be subject to preparation of a soils study as required by the Pleasanton General Plan (Public Safety Element, Policy 5). Design of such projects are required, under the Plan, to incorporate all recommendations of the City’s consulting engineer. Timing: Prior to issuance of building permits. MM H2 Purchasers of new residential units shall be provided with a copy of an earthquake hazards information document that describes the potential for strong ground shaking at the site, potential effects of such ground shaking, and earthquake preparedness procedures.