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<br />I <br /> <br />I <br /> <br />VIII. CONCLUSIONS AND RECO~lMENDATIONS <br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />A. Conclusions <br /> <br />The purpose of the Waneka Dam Feasibility Analysis was to provide a <br />detailed evaluation of the existing dam and reservoir, to develop alterna- <br />tives for improving and increasing storage capabilities, and to evaluate <br />the technical and economical feasibility of the alternatives. The study <br />was performed based on the guidelines of the CWCB for Preparation of <br />Feasibility Reports and other specific requirements of the Hw11RC, CWCB and the <br />City of Lafayette. The conclusions and recommendations are presented herein. <br /> <br />I <br /> <br />1 - Existing Dam Evaluation <br />The existing dam embankment and associated facilities have been in- <br />spected by the State Engineer's Office and WRC staff. The deficiencies <br />were outlined in Chapter-V of this report. The eonelU4~on ~eaehed i6 that <br />the exi6ting J.>Vr.uetwte doeJ.> not meet c.uIrJlen.t dam J.>a6 e:ty Ok deJ.>~gn ~equ.(J[e- <br />menU and -UnpltovementJ.> mu.6t be made be60ke the J.>tOkage 1[eJ.>Vr.~etion ean be <br />l[eJ.>e-inded. <br /> <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />A slope stability analysis was performed on the embankment using the <br />results of the soils boring and testing program. The 1[eJ.>u1tJ.> plteJ.>ented ~n <br />Seetion-V-B-4Ial J.>how that the exi6ting embankment doeJ.> not meet I[ecommended <br />J.>a6e:ty 6aetQl[J.> and thVte60ke -UnpltovementJ.> Me neee.MMY .to ;.,:tabil~ze the <br />embankment. <br /> <br />I <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />2 - Alternatives <br />Two alternatives were defined, which increase the amount of storage <br />available to the Lafayette water system, Rehabilitation and Enlargement. <br />Both of the alternatives were then evaluated as to the cost and impact <br />on storage. The Rehabili.ta.ti.on and En-iMgement aUVtna;ttveJ.> WVle eon- <br />;.,-idVted .to be v~able al..tvr.na..t.i.veJ.> and a de.tlUled 6~nane~al. anal.y;.,i6 ~ <br />pVt6Okmed. <br /> <br />3 - Financial Evaluation <br /> <br />Detailed financial evaluations were performed for the Rehabilitation <br /> <br /> <br />and Enlargement alternatives and are presented in Tables 9, 10, and II. <br /> <br />-34- <br />