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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />HIt:()tl;,:,I":~~L ::, ,,' <br /> <br />5) In addition the area <br />capacities which could be of <br />circular CMP <br />36" dia. <br />42 "'i'dia. <br />48" dia. <br />II .. <br />These capac~t~es are <br />corrugations, as can <br />capacities. <br /> <br />'. "','-,7 <br />,.; il,"1).'i.:/i <br /> <br />engineer has some comparisons of <br />value to you. <br />Equivalent Arch <br />42" x 29" <br />49" x 33" <br />57" x 38" <br />based on circular corrugations. <br />be obtained locally, add 10 cfs <br /> <br />Capacity <br />35 cfs. <br />55 cfs. <br />75 cfs. <br />For helical <br />to the above <br /> <br />At present a 24 inch pipe will carry the flow (12 cfs-your <br />estimate) that your. ditch company is required to deliver to your <br />downstream customers, and in fact will carry twice that (present <br />maximum carrying capacity). with any replacement conduit or pipe <br />there will need be two struc~ures (inlet and outlet) installed <br />for stabilization and erosion protection. <br /> <br />I hope this information is helpful to you in making your <br />decision regarding this project. <br /> <br />Please keep this office informed of your plans on this <br />project. Prior to construction I will need to have a design from <br />.the construction contractor submitted for evaluation. If you have <br />any further questions or needs regarding this project please <br />don't hesitate to call. <br /> <br />sincerely, <br /> <br />~j;~jvi~>tQ;~~ <br /> <br />, <br /> <br />steven W. Petersen <br />Conservation Technician <br /> <br />.~~. <br /> <br />." <br /> <br />'. <br />