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infrastructure improvements, an avian nesting survey shall be conducted of all habitat within 350 feet of any grading or earthmoving activity. The survey shall be conducted by a qualified biologist, as determined by the City, and occur no more than 21 days prior to disturbance. If no active nests are found, no further action is required. If active nests for special status avian species or raptor nests are found within the construction footprint, construction activities shall be delayed within a minimum 500-foot buffer zone surrounding active raptor nests and a minimum 250-foot buffer zone surrounding nests of other special status avian species until the young have fledged. This buffer zone shall not extend beyond the Staples Ranch site. The appropriate buffer can be modified by the City in consultation with qualified biologists and the California Department of Fish and Wildlife (CDFW). No action other than avoidance shall be taken without CDFG consultation. Completion of the nesting cycle shall be determined by a qualified ornithologist or biologist, as determined by the City. The buffer zone shall be delineated by highly visible temporary construction fencing, and no intensive disturbance (e.g., heavy equipment operation associated with construction, use of cranes or draglines, new rock crushing activities) or other project related activities that could cause nest abandonment or forced fledging, shall be initiated within the established buffer zone of an active nest. If the project is built in phases, this condition of approval shall be implemented for each phase of development. 32. In accordance with measure HZ-2.1, prior to initiation of any on-site construction activities, the project developer shall contact the Underground Service Alert (USA) whose purpose is to receive planned excavation reports from public and private excavators and to transmit those planned excavation reports to all participating excavation. The USA will contact local utilities and inform them that construction is about to begin in their service area. This notice allows local utilities to mark the areas where their underground facilities are located near the construction site so that they may be avoided during project construction. 33. In accordance with measure HZ-2.1, prior to construction activities within 50 feet of the PG&E gas line, the project contractor shall identify and demarcate the location of the natural gas pipeline using highly visible markers that will remain in place throughout project construction in the vicinity of the pipeline and ensure that all construction workers are aware of the location of the line. The location of the pipeline shall be noted on the site and construction plans. Further, the project contractor shall take all appropriate measures necessary to ensure that the line is not disturbed. 6