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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 />7.0 ESTIMATED CONSTRUCTION COST AND SCHEDULE <br /> <br />The estimated costs for implementing the various aspects of the <br />remedial construction at Gurley Reservoir Dam are included in Appendix K. <br />The major items included in the estimate are as follows: <br /> <br />1. Mobilization and demobilization; <br />2. Development of borrow area; <br />3. Coffer dam construction; <br />4. Demobilization of existing intake structure; <br />5. Excavation of working area; <br />6. Relining outlet tunnels; <br />7. Construction of new intake structure; <br />8. Installation of new sluice gate and operating system; <br />g. Breaching of coffer dam; <br />10. Construction of grouting platform; <br />11. Foundation drilling, water testing and grouting; and <br />12. Confirmation drilling and water testing. <br /> <br />The estimated total cost for completing all of these items is <br />approximately $609,000. This cost does not include contingencies, <br />engi neeri ng costs, or owner costs such as. interest, insurance, taxes, <br />and contract administration. Actual bid prices for the work may vary <br />depending upon the season of the work, experience and work load of the <br />contractors and their willingness to accept risk. <br /> <br />The estimated construction costs indicate that this design provides <br />a reasonably cost effective solution to improving outlet works condition <br />and performance, and reduci ng the potenti al for conti nued generati on of <br />foundation sinkholes. We estimate that construction of the <br />remedial/measures can be completed in a 10-week period provided the <br />conduit liner and slide gate and hoist has been pre-ordered. Earthwork <br />may be completed in two weeks, relining of the outlet works in six <br />weeks, and construction of a new intake structure with slide gate <br />installed in two weeks. The foundation grouting program may be completed <br />in eight to ten weeks and can be completed concurrently with the outlet <br />works rehabilitation program. <br /> <br />-28- <br />