Laserfiche WebLink
<br />.. <br /> <br />PASSAGE CONSULTING <br /> <br />April 7, 2003 <br /> <br />Mr. Travis Smith, Superintendent <br />San Luis Valley Irrigation District <br />296 Miles Street <br />Center, Colorado 81125 <br /> <br />Subject: Rio Grande Dam - Raising Dam <br />Proposal for Engineering Services <br /> <br />Dear Mr. Smith: <br /> <br />As you requested] am submitting this proposal for the District's consideration. You have <br />indicated the District wishes to investigate the technical and economic feasibility of raising the <br />maximum rionnal operating level of the reservoir by 10 to 15 feet. This would enable additional <br />storage to be captured during the spring runofffor use later during the irrigation season. <br />Accordingly, it is anticipated the surcharged reservoir would only be at the raised elevation for a <br />relatively short period of time. <br /> <br />I understand the District is anticipating receiving financial assistance from the Colorado Water <br />Conservation Board (CWCB) to undertake this study and that you wish to limit the cost to no <br />more thanSl0,OOO. <br /> <br />PERSONNEL <br /> <br />Jim Pas~eand Nabil. Dbaibo will primarily perform this assignment. You may recall Nabil <br />designedandsilpervisedthe.construction of the drain system installed in the left downstream <br />abutment. He bas both a master's degree ingeotechnicale:rigineenng and geology. He and Jim <br />willevaluate optionsfonaising the dam. Nabil will perform stability analyses of the raised dam <br />sections~ . <br /> <br />Anotherindividual,<,vithexpertiseinstructuralengineer.ng and rubber dams, will work with <br />Nabiland Jim. He will be working onthembber dam With Jim. <br /> <br />~ - . -.- -. - <br />. . <br />. . . <br />. . , - <br />'.-. c. _ _ . '-'" ,.. <br />Basedouourknowledge.of thedam,ancithejnformationyou sent to us, we believe that there are <br />twoprmnising ways to raise the top of the danL.. One would be with a concrete and earthfill <br />structure<constructed on the crest and extending doWn a portion of the upstream dam face. The <br />se<:ondapproachwepropQSe to study would be by placing only earthfill on the dam crest and <br />upstream slope of the dam. . <br /> <br />APPROAcH TO THE WORK <br /> <br />We do notproposetoconsider any alternatives that involve placing new fill on the downstream <br />face of the dam. . !nour opinionthe downstream face of the dinn is already quite steep, is covered <br />with rock, . ahdtheoutlet to the tunnel is close to the dam toe. <br /> <br />16627 SaybrookDrive RE. <br />Woodinville, W.A.98072 <br /> <br /> <br />Phone:42~78~969 <br />Cell: 206-459-8264 <br />email:passagej@yahoo.com <br />