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• <br /> 7 <br /> Jordan Lake or building an additional reservoir Cs) <br /> which would meet water supply requirement for the <br /> next 30 to 40 years. <br /> Vu .Cost. Estimates for Various Stop-gap Maintenance and <br /> Improvement Projects Associated with Lake Orange, Corporation <br /> Lake, and Lake Ben Johnson, as Estimated by Hazen and Sawyer, <br /> P.C. <br /> • Orange iake/County <br /> A. 1 Raise the present normal lake level 2 feet by <br /> installing a rigid flashboard system across the <br /> present spillway crest. For an estimated <br /> construction cost of $32,000 approximately 350,000 <br /> gallons per day can be added to the dependable <br /> supply. <br /> B. Address property matters and citizens concerns <br /> 1 associated with raising the lakes. <br /> C. I Begin monitoring the recently installed USGS gage <br /> below Lake Ben Johnson. <br /> • <br /> D. Approve and implement a water conservation and <br /> allocation ordinance to govern in periods of <br /> shortage. <br /> DrPorDetionJeteLOTDIegeaL1PElallcelaterSOLpgraPtioa <br /> A. IErovide gravitye_bYPDB5 aromi PxidAng dam at <br /> ICoreear_ 21jen Lake, This improvement would allow for <br /> [ normal operation of Corporation Lake at water levels <br /> less than full, thereby increasing the safe yield <br /> available from the upstream drainage area. There <br /> are two possible means of accomplishing this objec- <br /> tive (1) providing a manually primed siphon across <br /> Ithe top of the dam, or (2) installing a gravity <br /> bypass line around Le right abutment of the dam <br /> I (pump station side) . It is believed that a gravity <br /> bypass line around the right abutment -of the dam <br /> would be the least expensive. The line would be <br /> ! approximately 12-inches in diameter and include the <br /> ! appropriate valving. The estimated cost of this <br /> ! work is $15,000. <br /> B. IBPplecPment °Le:the eXiVting <br /> , Plebanp/QaTag, AlegManee inteicormtlon. There is an <br /> existing meter vault that can be used for this <br /> purpose. The cost of a new 6-inch meter is esti- <br /> mated at $2,500. <br /> C. Addition of a new 12-inch meter installation between <br /> ; Orange Alamance and Mebane. A new vault and meter <br /> would be required. The cost of this work is esti- <br /> mated at $10,000. <br /> D. Adopt water conservation and allocation rules to <br />