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Responsible Mitigation Measures and Statements of Findings of Impacts Being Monitoring/ RespMonitoring/Reporting Significant and Unavoidable Reporting Action Party for Providing Responsibility Timing Mitigation pertaining to the burrowing owl are discussed in Mitigation Measure BIO-ib above. Measures specifically pertaining to the bats are discussed In Mitigation Measure BIO-id below. 2. Surveys shall be conducted no more than 15 days prior to the potential disturbance. 3. If active nests(eggs/chicks present)are found during pre-construction surveys,the applicant shall establish a no-disturbance buffer(acceptable in size to the CDFG)around active raptor nests and nests of other special- status birds during the breeding season,or until it is determined that all young have fledged.Typical buffers are 300 to 500 feet for raptors and 100 to 250 feet for other nesting birds.The size of these buffer zones and the types of ground-disturbing activities restricted in these areas may be further modified during coordination with the CDFG and shall be based on existing noise and human disturbance levels at the project area. Nests initiated during construction are presumed to be unaffected,and no buffer would be necessary.If pre-construction surveys indicate that nests are Inactive or potential habitat is unoccupied during the construction period,nesting substrate(i.e.,trees,shrubs,and buildings)in this area can be removed, and no further mitigation is required. Depending on the species involved, input from the CDFG and/or the U.S. Fish and Wildlife Service(USFWS) Division of Migratory Bird Management may be warranted.As recommended by the biologist, no activities shall be conducted within the no-work buffer zone that could disrupt bird breeding. 4.6 Biological Resources(cont.) 4. If there is a break of at least five days in construction activities during the nesting season,an additional nesting bird survey shall be conducted to ensure that no birds have occupied nests during the pause in construction activity. 5. Outside of the breeding season(August 31—January 31),or after young birds have fledged,as determined by the biologist,work activities may proceed. BI0-1d:Bat-Specific Avoidance Measures.Pre-construction surveys Verification by County. Union Pacific San Joaquin County No more than 15 days prior conducted by a qualified bat biologist4 shall be conducted on the project site Community Development to ground disturbing prior to construction as proposed in Mitigation Measure BIO-1c. Department activities 1. Removal of trees showing evidence of bat activity shall occur during the period least likely to affect the bats as determined by a qualified bat biologist(generally between February 15 and October 15 for winter hibernacula and between August 15 and April 15 for maternity roosts). 2. If active day or night roosts are found,the bat biologist shall take actions to make such roosts unsuitable habitat prior to tree removal. 3.A no-disturbance buffer shall be created around active bat roosts being used for maternity or hibernation purposes at a distance to be determined in 4 A qualified biologist holds an MOA with CDFG to handle bats.