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Table 6-4. Required Live Storage by Region <br />BMP ID <br />Estimated <br />Live Storage <br />Required <br />[ac -ft] <br />Allowable <br />Bounce <br />[ft] <br />Min. Area for <br />Live Storage <br />[ac] <br />Max. Release <br />Rate <br />[cfs] <br />EAST <br />250 <br />4 <br />63 <br />75 <br />CENTRAL <br />260 <br />4 <br />65 <br />120 <br />WEST <br />50 <br />4 <br />13 <br />135 <br />TOTAL <br />560 <br />141 <br />135 <br />6.3.3 Outlet Control Structures <br />Each regional NURP pond's water levels will be controlled by an outlet control structure and operable <br />gate. In the event of a 100 -year design storm, the gated will be closed to minimize the risk of increasing <br />flood stage on Peltier Lake, the ponds will be sized to include enough live storage to hold the water until <br />the gates are reopened after the flood threat on Peltier Lake has passed. The exact location and design <br />of these facilities will be determined as development in the CSMP area progresses. It will be expected <br />that the storage areas will experience a significant bounce in elevation during the 100 -year storm event <br />and will need to be planted with a suitable planting palette that can tolerate periodic inundation to <br />maintain the vegetated buffer around the pond. The estimated peak discharges and timing of the 100 - <br />year 24-hour event is shown in Table 6-5. <br />Table 6-5. 100 -yr 24 -hr Maximum Discharge Rate between Regions <br />BMP ID <br />Estimated Peak <br />Discharge <br />[cfs] <br />Estimated Event <br />Runoff Volume <br />[ac -ft] <br />Timing of Peak Elevation <br />[hrs. after start of <br />rainfall] <br />EAST <br />75 <br />257 <br />77.8 <br />CENTRAL <br />120 <br />470.2 <br />78.0 <br />WEST <br />135 <br />526 <br />78.2 <br />The gates will be operated by the City of Lino Lakes and shall be placed to control the release of water <br />from each regional storage facility. Each gate must be closed when Peltier Lake reaches an elevation one <br />foot below the 100 -year flood elevation of 887.7 [NAVD88] on the rising limb of the lake stage hydrograph <br />and remain closed until the flood elevation on Peltier Lake recedes below the 100 -year flood elevation of <br />887.7, on the falling limb of the lake stage hydrograph. <br />6.3.4 Low Floor and Low Entry Freeboard Requirements <br />The lowest floor and lowest opening of future buildings and structures near the regional BMPs must <br />adhere to the freeboard requirements presented in RCWD Table C6 and Chapter 1011: Stormwater, <br />Erosion, and Sediment Control of the City Code. <br />Comprehensive Stormwater Management Plan <br />Northeast Lino Lakes Drainage Improvement Project <br />WSB Project No. 2929-79 <br />Page 22 <br />