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Mitigation Monitoring and Reporting Program B. Infrastructure Systems: Dmiwge <br />Page 14 <br />INFRASTRUCTURE SYSTEMS: DRAINAGE <br />Mitigation Measure: B3. Design subdivisions (charnels, culverts, s[reeb, open spaces, <br />retention basins, and site grading) in a comprehensive manner <br />such that no habitable buildings are subjeM to Rooding in a 100. <br />year storm event. <br />Impact to be Mitigated: Localized flooding may occur due to storms in excess of design capacities <br />of side channels. <br />Agency/Iodividual <br />Responsible for <br />Implementaton: Site and project developer(s) <br />Implementation Timing: During design of the mass site grading plan and subsequent subdivision <br />grading plans. <br />Mitigation Specifications: Drainage channels and culverts provided by [he project shall meet City of <br />Pleasanton subdivision standards. Site design shall accommodate flows <br />larger than the design s[onn standards for culverts and drainage channels <br />in streets and/or other drainageways so as not to flood habitable struc- <br />tures. Street and other facilities must 6e designed to accommodate those <br />flows, either containing [hem or channeling [hem to [he Arroyo de la <br />Laguna without flooding habitable structures. <br />AgencyHndividual <br />Responsible for <br />Monitoring: Cit <br />Action 6y Monitor: (1) <br />(2) <br />Monitoring Timing: (1) <br />(2) <br />of Pleasanton, Public Works Department <br />Assure that drainage systems will be designed to accommodate <br />runotT'from [he 100-year storm event. <br />Assure that all facilities are built as designed. <br />Prior to approval of mass site grading plan for the site and subdivi- <br />sion grading plans for portions of the site <br />Upon completion of each grading project <br />Monitor: Completion Date: Signature: <br />