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CCP 12-10-1990
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CCP 12-10-1990
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<br /> , <br /> . <br /> WATER DISTRIBUTION SYSTEM LOSSES <br /> rWVEMBER 20, 1990 <br /> PAGE FOUR . <br /> F, Hydrant Usage <br /> In Arden Hills, hydrant usage is generally limited to a few tanker <br /> loads for contractors during the construction season. This water use <br /> is monitored by installing a temporary hydrant meter or by truck <br /> volume. The total annual volume for this usage is expected to be less <br /> than 200,000 gallons. <br /> G. Unmetered Connections <br /> There are no known connections to the Arden Hills system which are not <br /> metered. The only known unmetered water usage is the irregular volume <br /> used for flooding skating rinks and fire fighting practice, In the <br /> past, a rough record was kept to determine approximately how many <br /> gallons of water were used for these purposes. The records indicate <br /> that a total of 1.5 to 3,0 million gallons per year typically are used <br /> by the park and fire departments. <br /> CONCLUSIONS ANO RECOMMENDATIONS <br /> .. "----- . <br /> Based on our review, it appears that there are three general areas which may <br /> be the source of the lost water, These are; ]) Inaccurate C/I/C meters, 2) <br /> Underground leakage, and 3) Inaccurate Residential meters. <br /> In view of the potential costs involved and the potential savings. we would <br /> reco~nend the following steps to continue the process of reducing water <br /> loss. We feel that these steps, in order, wi 11 provide the most benefit for <br /> the costs expended. <br /> l. Calibrate large meters. This can be accomplished by a contractor on a <br /> bid basis. <br /> 2. Investigate areas with regular water main breaks with leak detection <br /> procedures. This can be accomplished by a local contractor on a bid <br /> basis. <br /> 3. Routinely replace and recalibrate residential meters. This can be done <br /> on a rotating basis over a period of years. <br /> TJM/km <br /> . <br />
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