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Mitigation Measure 4.3-2b: To avoid and minimize the loss of individual California Tiger Salamander (CTS), the applicant shall be responsible for implementing the following measures prior to and during construction: ▪ Prior to ground disturbance, an employee training program for operators/contractors shall be conducted by a qualified biologist to explain the endangered species concerns at the project site; ▪ Site grading shall be conducted outside of the rainy season months during which CTS would be breeding or migrating; ® A qualified biologist shall conduct a preconstruction survey prior to the onset of site grading. All suitable habitat features that may be used by aestivating CTS shall be identified, marked and mapped during the preconstruction survey. The removal or destruction of suitable habitat features shall be conducted under the direct supervision of the qualified biologist prior to the onset of site grading. Any observed CTS shall be turned over to the USFWS or CDFW personnel for relocation, or shall be relocated by a biologist possessing an Endangered Species Act 10(a)(I)(A)permit as directed by the USFWS and CDFW; • Best Management Practices shall also be implemented to minimize the potential mortality, injury or other impacts to CTS. Any installed erosion control materials shall not include small-mesh plastic netting. All trash items shall be removed from the project site to reduce the potential for attracting predators of CTS, such as crows and ravens. Significant Impact Impact 4.3-3: Project construction could disturb a maternity colony of bats and roosting special-status bats on the project site, resulting in the loss of individual bats or the abandonment of an active maternity colony. Finding Changes or alterations have been required in, or incorporated into, the project which mitigate or avoid the significant effects on the environment. Facts in Support of Finding The City of Pleasanton has adopted the following measures which will reduce potential impacts to bats to a less-than-significant level: Mitigation Measure 4.3-3: The implementation of the following measures would ensure that maternity colonies of bats and roosting pallid bats and Townsend's big-eared bats would not be disturbed. a. A qualified biologist, knowledgeable about local bat species and experienced with bat survey methods, shall inspect all structures and trees that could support bats in the project area prior to the start of site disturbance (e.g. demolition, vegetation removal and earthwork). Surveys should be conducted during appropriate weather to detect bats (not in high winds or during heavy rain events). One daytime and up to two nighttime surveys (starting at least 1 hour prior to dusk) should be conducted to determine if bats are present. If bats are detected, additional surveys utilizing acoustic monitoring or other methods may be necessary depending on the recommendations of the bat biologist. b. Preconstruction surveys for bats should be conducted within two weeks prior to the removal of any trees or structures that are deemed to have potential bat roosting habitat. If bats are detected on-site and would be impacted by the project, then appropriate measures would be developed through City consultation with the CDFW. Mitigation measures would include one or more of the following methods: using one-way doors to exclude non-breeding bats, opening up roof areas of structures to allow airflow that would deter bats from roosting, and taking individual trees down in sections to encourage bats to relocate to another roost site. Typically this work is conducted in LUND RANCH II(PUD-25)RESIDENTIAL PROJECT 7 FINDINGS