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CITY OF <br />LINO LAKES <br />10/24/94 <br />Standards for Facility Design <br />• Emergency overflow above the 100 -year design <br />storm high water elevation. <br />• Erosion control per erosion control standard. <br />• Restoration per restoration standard. <br />Size <br />Pond volume shall be such to prevent flooding of existing <br />structures, maintain the outlet flow rate identified in the plan, and <br />handle all future development proposed in the watershed. In <br />areas identified as critical to maintain wildlife habitat, the bounce <br />of the pond shall be limited to protect the habitat. <br />Pond Construction (Sediment) <br />Newly constructed detention basins shall provide additional <br />storage volume below the outlet to allow for reasonable <br />accumulation of sediment. Where sedimentation is considered to <br />be a continuous problem, access to the area to allow for sediment <br />removal is required. Removal efficiency of a pond or ponding <br />system will be checked using the P8 model developed by Walker. <br />General Criteria <br />The following general criteria should be used when designing the <br />sediment pond. <br />Local Water Management Plan <br />Users Manual <br />• For basins intended to have permanent water levels, <br />a minimum of 4 feet of standing water (dead <br />storage depth). <br />• Maximize the separation between inlet points and <br />outlets to prevent short- circuiting of storm flows. <br />• A 10:1 slope for the first 15 feet from shore, then 3:1 <br />maximum slope. <br />SEH NO: LINOL9402.00 <br />Page 17 <br />