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<br />I <br />I <br />I <br /> <br />Page Two <br />Battlement Hesa Development Storm Drainage and Flood Plain Study <br /> <br />following general criteria: <br /> <br />I <br />I <br />I <br /> <br />1. Primary consideration has been given to the <br />lOa-year storm event when designing all major <br />drainageway locations as a part of the P.U.D. <br />development. <br /> <br />2. The objective of the drainage study is <br />to delinea~e drainage courses which must be <br />recognized in future detailed development plans. <br /> <br />I <br />I <br />I <br />I <br /> <br />3. Detailed preliminary design for drainage <br />facilities within each individual plat will be <br />developed at the time of platting. These plans <br />must be compatible with the Master Drainage Plan <br />developed as a part of the P.U.D. submittal. <br />The local or minor drainage systems will be designed <br />to accommodate the minor storm occurrence with a <br />return frequency of once in two years to once in <br />five years. Full recognition of the effect of <br />the laO-year storm will be given in all plan <br />deve lopmen 1:. <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />4. The en1:ire development shall be laid out in <br />such a manner that there is no flood damage to <br />dwelling units or business structures for the <br />lOa-year st:orm occurrence. <br /> <br />5. Runoff will be held to historic levels, in <br />compliance with state statutes, prior to its <br />discharge onto parcels of land not owned by <br />Battlement Hesa, Inc. This will be accomplished <br />by the uti1ization of storm water detention ponds <br />at selected locations. <br /> <br /> <br />Runoff from off-site areas will be calculated at <br />historic levels. To ensure the integrity of the <br />drainage facilities being built as a part of the <br />Battlement Mesa development, it will be necessary <br />to require the same restrictions of holding <br />runoff to historic limits on those areas of land <br />situated above the Battlement Mesa project as <br />they develop. <br /> <br />6. The entire P.U.D. plan and subsequent <br />platting will be designed to minimize the cost <br /> <br />I <br /> <br />