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Item A: Public Hearing onMetro Plan Amendment (Delta Sand and Gravel)
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CC Agenda - 12/12/06 Joint Public Hearing
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Item A: Public Hearing onMetro Plan Amendment (Delta Sand and Gravel)
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6/9/2010 12:58:15 PM
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12/7/2006 11:34:08 AM
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City Council
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Agenda Item Summary
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12/12/2006
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<br />Deere & Ault Consultants, Inc. - Dam & Reservoir Projects <br /> <br />Client: United Water and Sanitation District <br />Project Cost: $2.5 million <br /> <br />Page 2 of 8 <br /> <br />South Platte Reservoir Design and Construction <br />Littleton, Colorado <br /> <br /> <br />Overview of the reservoir site and <br />dam embankment <br /> <br /> <br />Earthen borrow, haul, and placement circuit in <br />southwest corner of reselVoir site, <br /> <br />South Platte Reservoir is located north of Chatfield Reservoir in Arapahoe and Jefferson Counties, <br />Colorado. It is adjacent to several residential subdivisions and a popular greenbelt park along the <br />South Platte River. The site is currently being transformed from a working gravel mine into a <br />municipal raw water storage reservoir for Centennial Water and Sanitation District. <br /> <br />An evaluation was made of the feasibility of constructing a 6,200 acre-foot reservoir. A complete <br />geotechnical engineering, civil engineering, and environmental investigation were performed. Upon <br />completion of the investigations, the project moved forward with the design of the reservoir, <br />preparation of plans and specifications, and permit acquisition assistance with local and state <br />agencies. We are currently providing resident engineering services during embankment <br />construction. In addition, the project includes several ancillary components for the reservoir; <br />including 3,000 lineal feet of 48-inch diameter steel pipe and a 60 ds pump station and 700 feet of <br />interceptor drain to control the outside groundwater table. <br /> <br />Major project components included a 70-foot high zoned earth embankment with 3.2 million cubic <br />yards of earthwork, a Probable Maximum Flood by-pass channel with drop structures, a multi- <br />leveled outlet works, and two acres of wetlands. The PMF channel is approximately 100 feet wide <br />and will convey up to 23,000 ds. <br /> <br />Client: Centennial Water and Sa.nitation District <br />Project Cost: $26 million <br /> <br />Stagecoach Reservoir_ <br />Adams County, Colorado <br /> <br /> <br />Test pit work for soil investigation at Stagecoach Reservoir. <br /> <br />The Stagecoach site is a future gravel mine located near Henderson, Colorado, in Adams County. <br />The mine will be reclaimed as a water storage reservoir when mining is complete. The reservoir <br />liner was designed as a soil-bentonite slurry wall approximately 7,000 feet long. DM staff is <br />currently providing construction related engineering services while the slurry wall is being <br /> <br />file~//x.\n?Q() nplt~ ~~"rt ~r r:~'l"(T~1\(\A (\n")n n;.. D...._,..__;........\TT_.-1.__~1~_ r\ ..,' \~ <br />
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