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<br />Memorandum <br /> <br />Dallas Larson, Paul <br />Palzer <br /> <br />From: Mark Statz <br /> <br />To: <br /> <br />Project Well #2 Rehab <br /> <br />Date: 4/15/2008 <br /> <br />Client: City of CentelVille <br /> <br />Re: <br /> <br />Well #2 work <br /> <br />File No: 000616-08000-0 <br /> <br />On 2/12/08 the City forwarded information for the replacement of the pump in Municipal Well #2 <br />and asked us to comment on the validity of the proposal as well as the overall impact on the <br />City's water system planning. Subsequently, Mark Rolfs, from our office, called Paul to discuss <br />the proposal and gave his' input. Dick Foster, from our office, contacted Renner (the contractor <br />proposing on the Well #2 work) and discussed the contents and feasibility of their proposal. No <br />further correspondence was created. <br /> <br />The following are our thoughts on the endeavor: <br />1. If the capacity of the well can be increased without causing drawdown problems, sand <br />migration, or other issues, there is no reason (other than cost) to not do it. <br />2. The Department of Health recommends that municipalities have enough "Firm <br />Capacity" (capacity of all the City's wells less the capacity of its largest well) to supply <br />water for the 'Peak Demand Day". <br /> <br />The City of Centerville has two wells, so its firm capacity is equal to the capacity of its <br />smallest well. Currently, well #1 is its smallest well. Therefore, increasing the capacity <br />of the larger well (well #2) does not increase the City's firm capacity. <br /> <br />3. The City's water system is interconnected with the water system of the City of Lino <br />Lakes. The connection involves bi-directional pressure sensitive valves which open <br />when one side's pressure drops significantly below the other. Water meters log the <br />flow to each side. <br /> <br />This interconnect could be viewed much like a third municipal well. How this is <br />viewed, is dependent on the terms of the interconnection agreement. If the agreement <br />allows unlimited flow from the other City, or at least more flow than the largest well, it <br />would be looked at as the City's largest well. Therefore, the City's firm capacity could <br />be viewed as the capacity of the two wells without the benefit of the interconnect. In <br />this case, increasing the capacity of well #2 would increase the City's firm capacity. <br /> <br />The City's current agreement states: "..Lino Lakes has constructed a water system <br />capable of providing emergency and peak demand water supply service to <br />Centerville.... This statement seems to indicate that the Centerville's peak demands <br />can be met by the City of Lino Lakes. However, this statement is a "whereas" <br />statement in the agreement and is immediately followed by a statement which implies <br />that Centerville will construct ....water system improvements..... <br /> <br />l _ <br /> <br />.. Bonestroo <br /> <br />2335 Highway 36 W <br />51. Paul, MN 55113 <br /> <br />Tel 651-636-4600 <br />Fax 651-636-1311 <br /> <br />www.bonestroo.com <br />