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a) If grading or construction activities occur only during the nonbreeding season, <br /> between August 31 and February 1, no surveys shall be required. <br /> b) Pruning and removal of trees and other vegetation, including grading of <br /> grasslands, should occur whenever feasible, outside the breeding season <br /> (February 1 through August 31). <br /> c) During the breeding bird season (February 1 through August 31) a qualified <br /> biologist shall survey activity sites for nesting raptors and passerine birds not <br /> more than 14 days prior to any ground-disturbing activity or vegetation <br /> removal. Surveys shall include all line-of-sight trees within 500 feet (for <br /> raptors) and all vegetation (including bare ground) within 250 feet for all other <br /> species. <br /> d) Based on the results of the surveys, avoidance procedures shall be adopted, if <br /> necessary, on a case-by-case basis. These may include construction buffer <br /> areas (up to several hundred feet in the case of raptors) or seasonal <br /> avoidance. <br /> e) Bird nests initiated during construction are presumed to be unaffected, and no <br /> buffer is necessary except to avoid direct destruction of a nest or mortality of <br /> nestlings. <br /> f) If preconstruction surveys indicate that nests are inactive or potential habitat is <br /> unoccupied during the construction period, no further mitigation is required. <br /> Trees and shrubs that have been determined to be unoccupied by nesting or <br /> other special-status birds may be pruned or removed. <br /> 30. Pre-construction Bat Surveys: Prior to issuance of a building or grading permit, a <br /> qualified biologist shall conduct a pre-construction special status bat survey when <br /> large trees are to be removed or underutilized or vacant buildings are to be <br /> demolished. If active day or night roosts are found, the bat biologist shall take <br /> actions to make such roosts unsuitable habitat prior to tree removal or building <br /> demolition. A no-disturbance buffer of 100 feet shall be created around active bat <br /> roosts being used for maternity or hibernation purposes. Bat roosts initiated <br /> during construction are presumed to be unaffected, and no buffer is necessary. <br /> 31. No new grading or development shall be allowed within 20 feet of the edge of <br /> riparian vegetation or top of bank of Arroyo Mocho, whichever is further from the <br /> creek centerline, as delineated by a qualified, City-approved biologist that shall be <br /> hired by the applicant/developer. Prior to issuance of a building or grading permit, <br /> the biologist shall certify in writing to the Director of Community Development that <br /> the project is in compliance with this condition. <br /> 32. In the event that paleontological resources are encountered during the course of <br /> development, all construction activity must temporarily cease in the affected <br /> area(s) until the uncovered fossils are properly assessed by a qualified <br /> paleontologist and subsequent recommendations for appropriate documentation <br /> and conservation are evaluated and approved by the City of Pleasanton. <br /> Excavation or disturbance may continue in other areas of the site that are not <br /> reasonably suspected to overlie adjacent or additional paleontological resources. <br /> 5 of 28 <br />