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1 Willows Aparunrnu <br /> prainege Study <br /> � 09/16/2009 <br /> SITE HYDRAULIC ANALYSIS (cont.) <br /> ' Prnious Pavement Design(cont.l : <br /> ( September 16, 2009 <br /> �e��sa�����"�'�««�aasa�v����«��n«�����e��a����"`������������s�� <br /> HYDAOGRAFH SUFII9AAY <br /> r PEAK TIME VOLUME <br /> � HYD RUNOFF OF OF CONTRIB <br /> NUM RATE PEAK HYDRO AREA <br /> Iv-scaLaas CFSc_6_�SMINsi=LCe\ACFT�=g===ACRES6 <br /> Sidewalk Runoff <br /> 14 0.009 480 156 CF 0.06 2-YEAR <br /> � 15 0.018 480 290 CF 0.06 10-YEAR <br /> 16 0.031 480 496 CF 0.06 100-YEAR <br /> I Pavement Runoff from 1500 SF of Paving <br /> 1 0.005 480 87 CF 0.04 2-Year Event <br /> 2 0.010 480 161 CF 0.04 10-Year <br /> + 3 0.017 480 276 CF 0.04 100-Year <br /> I As indicated,even with a design infilvation rate of 1-inch/hour and a safety factor of 2, the <br /> pervious pavement easily absorbs the surface runoff in the void spaces with very little <br /> ( accumulation of water in the void spaces. As long as the surf�ce is maintained,the pervious <br /> pavement will absorb surface accumulations of reinfall. <br /> IEvecett Pervious Sidewalks <br /> September 17, 2009 <br /> + s��saa_=ses�������es��e������«z�s���s��e������e���«���-a�«��aa=seve <br /> 1 LEVEL POOL TABLE SUMNARY <br /> ( MATCH INFLOW-STO•-DIS•<-PEAK•> OUTFLOW STORAGE <br /> I <-�.-DESCWP'i'ION--------> (cfs) (cfs)-id•-id•<-STAGF�id (cfs)VOL(cf� <br /> -====r_aa�=�n�seea�,�sa��a���������sa-ass����«���«���e«,_���.������ <br /> I 2-YEAR....................... 0.01 0.00 BED PERV I 100.10 4 0.00 3.35 CF <br /> 10-YEAR...................... O.OI 0.01 BED PERV 1 100.10 S O.OI 3.35 CF <br /> 100-YEAR..................... 0.01 0.02 BED PERV I 100.16 6 0.01 8.66 CF <br /> � <br /> ' <br /> � <br /> ' <br /> g rRo�ecr:ose�z <br /> � <br />