Laserfiche WebLink
BAY FAIR TOD SPECIFIC PLAN <br />Storm Drainage and Flood Control Policies <br />FLOODPLAIN. Pursue regulatory <br />approaches that avoid the future <br />expansion of the floodplain and avoid <br />flooding risks for new development. <br />2. LOW IMPACT DEVELOPMENT MEANS AND <br />METHODS. Promote the use of Low Impact <br />Development (LID) techniques to mitigate <br />the impact of stormwater runoff, both <br />for individual sites and as a coordinated <br />district -wide effort. This includes the use <br />of rain gardens, cisterns, rain barrels, <br />infiltration, retention, on -street swales, <br />vegetated areas, permeable pavement, <br />vegetated roofs, on -site wastewater <br />reuse systems, and other LID best <br />practices. This Specific Plan encourages <br />adequate site design measures that may <br />include minimizing land disturbance <br />and impervious surfaces (especially <br />parking lots); clustering of structures <br />and pavement; directing roof runoff to <br />vegetated areas; use of micro -detention, <br />including distributed landscape -based <br />detention; preservation of open space; <br />protection and/or restoration of riparian <br />areas and wetlands as project amenities. <br />reducing impervious surfaces (especially <br />parking lots); clustering of structures <br />and pavement; directing roof runoff to <br />vegetated areas; and the use of micro - <br />detention as project amenities. <br />3. FLOOD CONTROL PROJECTS. In <br />coordination with efforts by the Alameda <br />County Flood Control District, pursue <br />capital improvements to reduce or remove <br />Special Flood Hazard Areas from within <br />the Specific Plan Area. This includes, but <br />may not be limited to, improvements <br />to the Estudillo Channel, expansion or <br />naturalization of the Estudillo watercourse, <br />creation of floodwalls, and elevation of <br />road crossings. <br />4. 10-YEAR LEVEL OF PROTECTION. 10-year <br />peak flows should be contained within the <br />drainage system constructed for the Plan <br />Area. <br />5. IMPROVEMENT TIMING. Major <br />stormwater infrastructure upgrades <br />should occur in advance of roadway, bicycle <br />and pedestrian corridor improvements. <br />6. GREEN STREET INFRASTRUCTURE. Utilize <br />roadside stormwater capture, infiltration, <br />and treatment technologies that meet <br />the intent of the MS4 permit and that <br />are compatible with the character of the <br />Specific Plan Area. Some technologies <br />may include rain gardens and permeable <br />paving roadside parking. <br />110 <br />