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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 />II. Detention Storage. 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 downstr"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"l 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 aft"r 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 ie 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 I opmen t of otherw i se undev.e I opab I e I and. <br /> <br />1. Opportunities for lower building construction cost. <br /> <br />m. Opportunl ties for creating ne", water suppl ies. <br /> <br />V 1-5 <br />