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f <br /> • � <br /> November 6, 1985 <br /> File No. 02-85-094-002 <br /> SII,VER LAKE SE3,F-SERVICE S'lUF2PGE AND CAR WASH FRUTECP BY <br /> Pf�EJ.' V�T ODRPORATI�1 <br /> CAI.QII�ATIGNS FOR DElERMIIdP'�i'ION OF 13RJ�FF ODEFFIC:iFN15 <br /> Wooded Area 28,710 sq.ft. or 0.66 Ac. @ 0.15 <br /> Ex. Bldgs & Aaph. 1967 sq.ft, or 0.04 Ac. @ 0.90 <br /> Gravel Dri�e 5580 aq.ft, or 0.13 Ac. @ 0.75 <br /> Paature/Grasaed Are.a 103,106.5 sq.ft, or 2.367 Ac. @ 0.20 <br /> Prorated (0.6610.15 + (0.04)0.9 + 10.13)0.75 + (2.36710.2 <br /> 3.197 = 0.:22 <br /> Existing prorated runoff ooefficient = 0.22 <br /> FTAiS]RE SITE O�IDITICNS <br /> Planter Areas 10,810 sq.ft. or 0.25 Ac. @ 0.20 <br /> Gravel Storage Area West of 16th Ave. S.E. 0.94 Ac. @ 0.80 <br /> Asph, Conc. and Bldg. Areas 2.007 Ac. @ 0.90 <br /> Prorated (0.4012.007 + (0.80)0.�4 + (0.2010.?,� <br /> 3.197 = 0.82 <br /> Prorated Future It�off �efficent = 0.82 <br />