Laserfiche WebLink
<br />WOOdward-CIY. <br /> <br />. <br /> <br />"rapid drawdown"; however, this is not clear based on the surface features. We <br />recommend excavating 1 to 2 test pits through the cracking to map the "direction" of the <br />slide surface, The test pits would be excavated about 5 to 7 feet deep and then refilled <br />with compacted material. <br /> <br />Scope Option 4 - Spillwav Conceptual D~si~ <br /> <br />We understand that the existing spillway is undersized when compared with current <br />spillway requirements, Our work scope for this item would consist of performing <br />hydrologic and hydraulic analyses for the Brush Hollow drainage area. Our hydrologic <br />analyses would include rainfall, runoff, and flood routing estimates for the required <br />design storm event. We would also perform hydraulic analyses of the existing spillway <br />and spillway enlargement alternatives to develop up to three conceptual designs and cost <br />estimates for enlargement of the spillway. We would also evaluate the quantities of <br />material that may be available from spillway enlargement that could be used to repair <br />the dam. <br /> <br />Scope Option 5 - Embankment Raise <br /> <br />We understand that sediment in the reservoir may have reduced the available storage <br />by 3 to 4 feet. You have requested that we include an estimate to evaluate increasing <br />the height of the dam by up to 4 feet to compensate for the lost storage, For this <br />option, we would develop a repair configuration for a raised embankment and estimate <br />the increased quantities and costs for the raise. <br /> <br />Scope Option 6 - Outlet Works Inspecti<ID <br /> <br />We understand that the Water Company is considering a camera inspection of the outlet <br />works, since the reservoir is nearly dewatered. Our Scope of Work for Option 6 would <br />be to perform a video inspection of the outlet and document the inspection on a video <br />tape. We would also complete a review of the condition of the outlet pipe and <br />document the results of our review in a letter report. The pipe condition review would <br />be completed by our outlet works specialist, Mr. Sal Todaro. In order to complete this <br /> <br />Woodward-Clyde Consultants <br /> <br />23360/PR0.4 12-08-93(8:53am)/RPT <br /> <br />4-5 <br />