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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />t <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />-32- <br /> <br />We have included Item 2 because of the specialized nature of the soil- <br />cement construction work required for the project and the need to carefully <br />identify and evaluate prospective bidders. We envision this work to include <br />contacting owners of dams requiring similar modifications, the SEO, bonding <br />and insurance companies, and any other appropriate third parties, in order to <br />identify a list of qualified bidders. The work would also include preparing <br />announcements of the project and solicitations for qualifications, evaluation <br />of qualifications packages, interviews of prospective bidders, and evaluation <br />of construction bids in order to select a contractor for the project. <br /> <br />Item 3 work would include construction quality control and testing ser- <br />vices, consultation as required, and preparation of as-built drawings for <br />submittal to the SEO for final acceptance. We anticipate that a technician <br />would be required on site full time during the soil-cement construction work <br />and intermittently at all other times. We have also included survey support <br />to verify paylines. and quantity surveys to be completed by the contractor. <br /> <br />Items 1 and 2 would be completed in 1987. Item 3 services would be <br />required in the summer of 1987. Detailed calculations supporting the estima- <br />tes for engineering and administrative costs are given in Appendix D under <br />"Option 2 - Cost Estimates for Engineering and Administration." <br /> <br />The engineering and administration fees given in Table 3 are 15.8 percent <br />of the total cost for the preferred modification option. It should be noted <br />that Item 2, which is not a typical engineering cost, has been included <br />because of the specialized nature of the work and our assessment of the Town <br />of Oak Creek's need for assistance in assembling a bid package, identifying <br />prospective bidders, evaluating bids, and selecting a contractor for the spe- <br />cialized work. Excluding Item 2, the engineering and administration fees <br />would be 13.7 percent of the total project cost. Our experience indicates <br />that this estimated fee is representative of the actual costs for completing <br />final design and construction observation engineering work over a one- to two- <br />year period. It includes funds for additional site explorations in the toe <br />area of the dam, special laboratory tests, and funds for preparation of spe- <br />cial use permit documents and meetings with the USDA Forest Service to obtain <br />approval for the work. <br /> <br />Contingencies - A construction cost contingency of 22 percent has been <br />included in our feasibility cost estimate. Based on our experience on similar <br />projects, we have selected this contingency to cover the following potential <br />cost items: <br /> <br />1. Additional items indicated during final design <br /> <br />2. Difference between engineer's estimate and actual bid price <br /> <br />3. Change of conditions identified during construction <br /> <br />Project Price Increase - All unit cost estimates and the estimates for <br />engineering and administration are for 1987. The SEO has indicated that <br />summer of 1988 construction would be approved provided final designs are <br />completed and submitted by about September 1, 1987. Therefore, we have <br />