Laserfiche WebLink
Woodward-Cly� � <br />1.0 <br />INTRODUCTION <br />1.1 GENERAL <br />Woodward-Clyde Consultants" (WCC) is please8 to submit this proposal to provide <br />geotechnical investigation and design services for Brush Hollow Dam. We have <br />prepazed this proposal based on your summary of work requested by the Colaracio State <br />Engineers Office and verbal discussions with your Mr. Troy Templeton on September 30 <br />and October 7, 1993. <br />This technical proposal contai i (a) our uaderstanding of the praject <br />(Section 1.0); (b) our proposed d organization (Section 2.0); (c) WCC's <br />qualifications and experience and e e of key personnel designated for <br />this project (Section 3.0}; ( e t approach and scope of work; (e) a <br />discussion of WCC's approac to the problem aad recommeaded modifications to the <br />scope of work (Section 4.0); aund (� our estimated fees (Section 6.0). <br />1.2 UNDERSTANDING OF THE PROJECT <br />Brush Hollow Dam is a 60-foot high earthfill dam with a puddle corc. The crest width <br />is about 12 feet and the dam has a 3:1 (horizontal:vertical) upstream slope and a 2:1 <br />downstream slope. According to available plans, the puddle core had a top width of <br />about 5 feet with 1:20 sideslopes down to natural ground aad a narrow trench core <br />below that level ta bedrock. The dam was appazently built in the 1920s. <br />Beaver Park Water Inc. (Water Company) has a few old photographs that show a sluice <br />in operation and horse drawn equipment being used to construct the dam. The <br />upstream slope was reportedIy covered by 9 inches of hand-placed riprap. In about 19$1, <br />the reservoir was drawn down far replacement of the gate operator with a hydraulic gate <br />operator at the crest of the dam. Some photographs of the dam during the drawdawn <br />in 1981 were available, showing the upstream slope to be irregularly shaped with <br />undulations parallel to the upstream face of the dam. <br />Woodward-Clyde Conwltarns <br />233601PR0.1 12-OS-93(E:52am)/RPT 1-1 <br />