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<br />10. Flood Plain Definition. Natural waterways having adequate capacity <br />for the design runoff will be flood-plain zoned to protect their <br />capacity from encroachment. <br /> <br />11. Detention Storaqe. Storage wIll be utilized wherever practical <br />to reduce peak flow rates. Existing emb,~nkments whIch provide de- <br />tention storage should be protected 50 as to not create a life <br />hazard and so that damages downstn,am an. not Increased because of <br />embankment washouts. provisions must be made for occurances greater <br />than the 100 year design frequency. <br /> <br />12. Sedimentation. The desIgn crIteria anticipate the regular removal <br />of sediment and debris from the basins for use as construction <br />materials and for solid waste disposal cover material. <br /> <br />Care sha 11 be taken to des I gn ponds with flood rou t I ng procedu res, <br />and have adequate emergency sp I llways. <br /> <br />13. Multiple Use. The master planning of the waterway. will be done <br />in a manner compatible with the fo'llowil1<1 multiple uses and auxili- <br />ary benefits. <br /> <br />a. Greenbelt and urban open space. <br /> <br />b. Lowered groundwater table. <br /> <br />c. Controlled rising groundwater table after urbanizatIon. <br /> <br />d. Reduced street maIntenance costs. <br /> <br />e. Reduced street construction costs. <br /> <br />f. Improved movement of traffic. <br /> <br />g. Improved publ ic health environment. <br /> <br />h. Lower cost open space. <br /> <br />i. Improved quality of classified streams. <br /> <br />j. Opportunities for close-In solid waste disposal sites. <br /> <br />k. Deve 1 opmen t of otherw I se undev'e I opab I e J and. <br /> <br />I. Opportunities for lower building construction cost. <br /> <br />m. Opportunl tIes for creating ne., water suppl ies. <br /> <br />v, -5 <br />