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<br />Mr. Tra\1isSmith , <br />, Sari Ltii$ Valley Iriigatloil District <br />RioGrand~ Dam'Proposal <br />Apri17, 2003 <br />Page 3 <br /> <br />valves are much more suitable for regulating flows under high heads than slide gates. <br />Installation of such a bypass and valve would enable the slide gates to be used much <br />less frequently. <br /> <br />We qm further explore these outlet works modifications in a future phase of the project <br /> <br />ADDITIONAL STORAGE'VOLUME <br /> <br />You recently sentme a capacity summmy table and a drawing prepared,by Davis Engineering <br />Service titled "Capacity Study" dated November 13,1998. <br /> <br />We have the capability to use a conlputerprogram to detenninethe area and volwne between <br />difIerentelevationcontours. To utilize this capability we need an electronic copy of this <br />topographic map. ,'The drawing has been created electronically and so we should be able to <br />manipulate the eleCtronic version. Please have Mr. Davis' email it(passagej@yahoo.com). or <br />send us aCD to: Jim Passage; 16627 Saybrook Dr.N.E., Woodinville, WaShington, 98072. <br /> <br />STUDY REPORT. <br /> <br />The deliverable from our study will be a reconnaissance level report describing our <br />. reconm1endations for how to raise the dam itself: how to close off the "corral" area and how to <br />modify the spillway entrance'to allow the storage of 10 to 15 feet of additional water. <br /> <br />Our report will prQvide you with l1x17 size drawings illustrating the concepts in plan and <br />section. <br /> <br />I' have 'already sent you a package of material on rubber dams, photos showing the location where <br />the rubber dam would be installed, photos of a 10-foot high rubber dam designed by Harza <br />, Engineering Company, and photos of a type of stackable, precast concrete block that may be <br />suitable for raising the dam crest. <br /> <br />Our studywiU include an approximate cost estimate based on a reconnaissance study level of <br />accuracy. AS such we will include contingencies at 30 percent. We will include the quantities of <br />the key items So'that the District can separately discuss the cost items with experienced <br />construction contractors in the region to get their perspective on what the cost might be. <br /> <br />Lastly, the report will include our recommendations for future phase technical activities such as <br />additional field sampling and testing. <br /> <br />BILLING RATES AND COMPENSATION <br /> <br />As Passage Consulting we are able to offer our clients lower billing rates than larger firms, which <br />carry higher overhead costs. I propose to bill the District at a rate of$80/hour for all three of the <br />primarily individuals who will be undertaking this work. <br /> <br />In view of the $10,000 limitation on cost I have estimated the following distribution of effort. <br />