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Dudek conducted an Initial Study and created a Mitigated Negative Declaration (IS/MND) to address the environmental concerns associated with the construction of the trail. A description of the project is below. Proiect Description The proposed project would develop an approximately 0.7-mile-long (3,700 linear feet) technical mountain bike trail within and adjacent to Augustin Bernal Community Park, in part replacing an existing unofficial user-created trail and decommissioning 4,300 linear feet of other existing unofficial user-created trails. The new trail would consist of an appropriately designed and engineered trail to minimize erosion and user risks, as well as reduce potential pedestrian/bicyclist conflicts on the multi-use trails in Augustin Bernal Community Park by encouraging some of the existing downhill mountain bike traffic currently using the multi-use trails to divert to the new trail. Other user-created trails would be decommissioned to minimize potential adverse effects on the vegetation and wildlife in the park. Construction of the proposed trail would require minor grading and vegetation clearing along the entire bike trail alignment. The proposed trailhead would be on the Ridgeline Trail, which continues north through Augustin Bernal Community Park and south into the southern portion of Pleasanton Ridge Regional Park. It would also be near Thermalito Trail, which continues south into Pleasanton Ridge Regional Park. The proposed trail terminus is at the Augustin Bernal Community Park staging area. Beginning at the staging area, cyclists could follow existing multi-use trails to reach the proposed trailhead, specifically from Golden Eagle Trail to Valley View Trail to Ridgeline Trail. The proposed trail requires a trail easement with the Golden Eagle Homeowners Association (HOA) because the HOA owns the land between the staging area parking lot and Augustin Bernal Community Park where the proposed alignment would cross. The easement was obtained in November 2022. Decommissioning existing user-created trails would involve removing constructed features such as berms and jumps, rehabilitating soil, and broadcasting a seed mix to promote new vegetation growth. The attached IS/MND has additional project information, including figures of the project location, proposed trail alignment and design, proposed trails to be decommissioned, and existing site conditions (see Attachment 1). ENVIRONMENTAL ASSESSMENT An Initial Study for the proposed Augustin Bernal Mountain Bike Trail Project was prepared in accordance with CEQA (Section 21000 et seq., California Public Resources Code) and the CEQA Guidelines (Section 15000 et seq. Title 14, California Code of Regulations). The analysis in the Initial Study determined that the project could potentially have significant impacts on the following resource categories: biological resources, cultural resources, geology and soils, hazards and hazardous materials, hydrology and water quality, public services, recreation, and tribal cultural resources. Discussion of each resource and the proposed mitigation is provided below. Page 3 of 7