RES 231363 - Laserfiche WebLink

AUGUSTIN BERNAL MOUNTAIN BIKE TRAIL PROJECT DRAFT INITIAL STUDY 12956 DUDEK 11 April 2022 Materials Storage Areas and Equipment Staging Materials and equipment storage and staging would occur within the Augustin Bernal Community Park staging area and parking lot at the downhill end of the trail, and in an approximately 400-square-foot area at the uphill end of the trail. After construction, any materials not used or reused for the proposed project would be hauled off site and reused or disposed of in a landfill or recycled at a recycling facility. On-Site Drainage and Erosion Control The proposed project would implement commonly used best management practices for erosion control during construction, including fiber wattles and silt fencing, covering exposed soil piles, and mulching disturbed areas during construction. Proposed measures for construction erosion control are identified on Sheets N-1 and N-2 of the trail design plans provided in Appendix A. In addition, the project design incorporates grade changes and berms to control for erosion throughout ongoing use of the trail. Lighting All construction would occur in daytime hours and thus no nighttime artificial lighting would be required for construction. Sheet N-1 of the trail design plans notes that all construction would occur between 8 AM and 5 PM Monday through Friday. Lighting would not be required during operation because Augustin Bernal Community Park is open from dawn to dusk. There is no existing or proposed lighting at the Augustin Bernal Community Park staging area and parking lot. Avoidance and Minimization Measures The following avoidance and minimization measures (AMMs) would be incorporated as part of the project to avoid construction-related impacts on sensitive biological resources. These measures will be included in an Avoidance and Minimization Measures section within the Mitigation Monitoring and Reporting Program prepared for the project. Special-Status Plants AMM: Conduct Botanical Survey. A qualified botanist shall survey the project site for special-status plant species in accordance with California Department of Fish and Wildlife protocols (CDFW 2018) prior to commencement of work. Target special-status plant species and their typical blooming periods include bent-flowered fiddleneck (Amsinckia lunaris; March through June), Hospital Canyon larkspur (Delphinium californicum ssp. interius; April through June), fragrant fritillary (Fritillaria liliacea; February through April), and Diablo helianthella (Helianthella castanea; March through June). The botanist shall also survey for and map areas where native bunchgrasses and wildflowers dominate the herbaceous layer for avoidance during construction. Any special-status plant occurrences and native bunchgrass/wildflower stands shall be marked as Environmentally Sensitive Areas (ESAs) to be avoided during final field fitting of trail improvements and alignments, if possible. The botanist or another qualified biologist with native plant identification training shall be present on site during ESA marking to help guide the contractor in fence or flagging placement around any plants or native vegetation that can be avoided by construction. The botanist or biologist shall be inspect the ESAs on a weekly basis thereafter to confirm that plants and vegetation are adequately protected by construction activities. Alameda Whipsnake AMM: Take Avoidance During Construction. The below measures shall be implemented to avoid take of Alameda whipsnake before and during construction.