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WOODDALE BUILDERS <br /> LOT 1, BLOCK 2, MOONEY LAKE PRESERVE <br /> RAIN GARDEN CALCULATIONS <br /> January 10, 2018 <br /> EAST RAIN GARDEN <br /> Proposed hardcover=3701 SF <br /> 3701 SF x 2" runoff/12" per 1 Ft=617 CF required <br /> Proposed Rain Garden=875 CF <br /> ELEV(Fr) AREA(SF) VOL(CF) <br /> 1019.5 1900 0 <br /> 1019.0 1600 875 <br /> Drawdown= 6"/0.2 in/hr= 30 hours <br /> WEST RAIN GARDEN <br /> Proposed hardcover= 11,782 SF <br /> 11,782 SF x 1" runoff/12" per Ft=982 CF required <br /> Proposed Rain Garden= 1275 CF <br /> ELEV(FT) AREA(SF) VOL(CF) <br /> 1007.25 1900 0 <br /> 1006.5 1500 1275 <br /> Drawdown=9"/0.2 in.hr=45 hours <br /> GRONBERG Viz.r°.`6SCY.. ,__TES. .NU <br /> 445 N.W l LO`7 DR. <br /> . <br /> LONG LAKE,Mu 7 5;356 <br />