6.10. SR 03-18-2002 - Laserfiche WebLink

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MAR-15-82 85 :48 PM DYNAMIC'S DESIGN o. nd LAND 6124418684 ~er,13, 2002 4'?.7P~ No,0782 P.85 B. Storm Drainage i. The re~or~ doc# not ¢l, ar~ ~ow a comt~arlaon o/the total o/pre and Ro~t total site ditcharge rate~. · [n'~e rex~aed drainage repO~ wc have now marc c[cexly compared the tozd pro ~d ~at ~e fo~ ~c ~te groj'cct aitc. ~adi~ ~lan ~uld ~w the 100-y~ar ~L f~ all ~on~ In t~ dawtopment. newest m~sion of ac ~ pl~ now ~c$ ~c lO0 yc~ H~ ~r ~1 of~e poa~, IO0-ye~ ~ far ~cn~ 66 t~ ~h~n tn the re~r~ ~ 94~.4; the c~l~ulatlo~ tubmitted shaw t~ia elt~lon to ba 94~. O. ~hlg ~uM ~ ~rracUd In th~ re~ra H~ lis~ed tn ~e te~a ~. a ~. ~c =po~ ~ been ~vtsed to ~e~ ~c co~ect olcvation. The calculations should be revised to show the normal water loyal to be at tha au#at elevation at the begtnntn8 of the 700 j~ear event. Tht~ well afl'eat the calculated lOO year HtgL for moat of th~ ,uond~· In the rCvise~i drainage rcl~ort,' each Of thc reservoirs have now been anal. yz~ ass~mln$ the beginning water level in t~ pond is a~ ~ outlet elevation,' POnd ~ along Ranilh '~°ad ts:xhown to have no outlet o~her than over/lowing the curb onto 21~ a..4venge. ~torm .~awar It xhown tn the area dn tnlet.~l~ould ba added b~htnd tho curb to drain thtt or~a. An inlet to drain ~i, er~a is n~;w Jh~v,'u on th~ rcvise~i grading plea, The trail croa;tn~ tl, e dltch b~twmen l~ancl~ ,qaa# and 2 ~ $ within th, RO~ of R~ch' Road at 215~ Aven~ h~ b~a ~a~d. The EOF between ~ot.~ 10 and 11, Block l, la al,own at an elevation of 947.0. The low potnt ct the intersection of 214tn ~lvenue. and ~/ueen Street ts 945. 0 leaving u potential pond degth 0/'2. O feet tn the road should the ~torm sewer become obstructed The Iow potnt ~hoglld be ~at~ed or ih~ ~0~r #hauld be la*uer~d to allow a mtcrlmum pondlng depth afl. O foot. The EOF has been lowered'on'the revised grading plan. The maximum portdinl{ depth ts 'n, ow 1.0 feet,