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<br />I <br />1 <br />1 <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />1 <br />1 <br /> <br />the present system and as outlined by Alternate III. <br /> <br />3. Alternate III: <br /> <br />Alternate III proposes some re-routing of the exist- <br /> <br />ing system. The waters from the Ridgway Ditch will be inter- <br /> <br />cepted at Lake Otonawanda through a new right-of-way easement <br /> <br />to provide a more gradual slope to Cottonwood Canyon. The <br /> <br />section between Lake Otonawanda and the Town's existing reser- <br /> <br />voirs will be connected by a 6" diameter PVC Class 200 waterline. <br /> <br />A new treatment plant (Exhibit XIII f.) will be constructed here <br /> <br />together with a 350,000 gallon steel or concrete treated water <br /> <br />storage tank. A small diversionary structure will be constructed <br /> <br />in front of the treatment plant, As water will be treated and <br /> <br />enter the tank with an altitude sensing valve monitoring supply <br /> <br />with demand, excess. water can pass through the diversion box <br /> <br />when there is no demand call and fill the existing reservoirs. <br /> <br />An auxiliary pump located in the-treatmen~ plant and extending <br /> <br />into the lower reservoir could draw water from it, pump it <br /> <br />through the filter and into the storage tank in times of low <br /> <br />flow or emergencies. Also, by incorporating the present exist- <br /> <br />ing water system into the reservoir so as to collect the over- <br /> <br />flow or spillage in the bottom one from the top two, said water <br /> <br />could be used for irrigation. Care would have to be taken to <br /> <br />absolutely disconnect all users of treated water for potable <br /> <br />purposes from the old system. During the growing season the <br /> <br />old system can supply non-potable water for irrigation. This <br /> <br />22 <br />