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Hacienda Mixed Use Rezoning Initial Study Less Than Potentially Significant with Less Than No Significant Mitigation Significant Impact Impact Incorporation Impact 4. Biological Resources Would the project: a) Have a substantial adverse effect, either directly or X through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? b) Have a substantial adverse effect on any riparian X habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? c) Have a substantial adverse effect on federally X protected wetlands as defined by Section 404 of the Clean Water Act (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? d) Interfere substantially with the movement of any X native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? e) Conflict with any local policies or ordinances X protecting biological resources, such as a tree preservation policy or ordinance? f) Conflict with the provisions of an adopted Habitat X Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? Environmental Setting The three project sites are covered with non landscaped, ruderal (weedy) vegetation. No special status species are found on the project sites. The three project sites contain no riparian land or wetlands; they are not a stopping point for migratory birds. The City of Pleasanton designates trees over 55 inches in circumference or more or than 35 feet in height as heritage trees subject to regulations governing their removal in the Pleasanton Municipal Code, Chapter 17.16: Tree Preservation. There may be trees along the property lines or near the sidewalk of the BRE site (Hacienda site 7E) and /or the Roche Molecular Systems site (a portion of Hacienda site 6) which should be evaluated at the time a development plan is reviewed. Significance Criteria The impact questions above constitute the significance criteria for this environmental topic. Draft, Subject to Revision 11 8/31/2009