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AUGUSTIN BERNAL MOUNTAIN BIKE TRAIL PROJECT DRAFT INITIAL STUDY Table 2-1. Mitigation Measures Measure Number Measure Text area and the County Coroner shall be immediately notified of the discovery. No further excavation or disturbance of the site or any nearby area reasonably suspected to overlie adjacent remains shall occur until the County Coroner has determined,within 2 working days of notification of the discovery, if the remains are human in origin. If the County Coroner determines that the remains are, or are believed to be, Native American, they shall notify the Native American Heritage Commission in Sacramento within 24 hours. In accordance with California Public Resources Code Section 5097.98,the Native American Heritage Commission must immediately notify those persons it believes to be the most likely descendant from the deceased Native American.The most likely descendant shall complete their inspection within 48 hours of being granted access to the site. The designated Native American representative would then determine, in consultation with the City,the disposition of the human remains. GEO-1 Erosion Control. Erosion control measures shall be implemented in accordance with an erosion control plan. This could include measures for slope stabilization, dust control, and temporary and permanent erosion control devices/best management practices such as straw wattles, track out control devices, silt fencing, sediment traps, tarping of stockpiled soils,revegetation treatments or other measures specified by the erosion and dust control plan or as determined to be necessary by the project engineer. GEO-2 Treatment of Unanticipated Paleontological Resources. In the event that paleontological resources (e.g., fossils) are exposed during construction activities for the project, all construction work occurring within 50 feet of the find shall immediately stop until a qualified paleontologist meeting the professional standards of the Society of Vertebrate Paleontology can evaluate the significance of the find and determine whether or not additional study is warranted. If the discovery is clearly not significant,the paleontologist may document the find and allow work to continue. If the discovery proves potentially significant under CEQA, additional work such as preparation of a paleontological treatment plan and monitoring in the area of the find may be warranted. HAZ-1 Management of Hazardous Materials During Construction.The following measures shall be implemented prior to and during construction and shall be incorporated into project plans and specifications. • All equipment shall be inspected by the contractor for leaks prior to the start of construction and regularly throughout project construction. Leaks from any equipment shall be contained and the leak remedied before the equipment is again used on the site. 12956 DUDEK 5 April 2022