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/ <br /> <br />DATE: <br />TO: <br /> <br />FROM: <br /> <br />SUBJECT: <br /> <br />November 21, 1997 <br /> <br />Jessi~-HartJ~-' <br />Steve Jankowski <br />Dean Kapler <br />Linda Waite Smith <br /> <br />Mark Boos <br /> <br />MEMO <br /> <br />Municipal Water Utility 1998 - 2000 <br /> <br />The Purpose of this memo is to detail the projected water demands for the near future so as to make <br />the best decisions for: <br /> <br />1) Well #4, Vault Vs. Pumphouse <br />2) Future Capital Improvements i.e.; WeI1 #5, Tower #2 <br />3) F601 Operations Budget <br />4) Water Appropriations Permit <br /> <br />Projection Summary. <br /> <br />Based upon the projections, it appears as though we should plan on an additional 1 to 1.5. million <br />gallon water tower on line in 199.9.. Well #5's timing will not need to be considered until the 1999 <br />budget process. Well #5 may not be needed until year 2000 unless the demand is higher than shown <br />on Table 3. The projected peak day in 2000 is 4.96 Million Gallons per Day tqvlGD). With an <br />expected 1000 GPM from well #4, R~ns:~y's produc~n':.w, ill be 5.2 MGD. Our firm well capacity, <br />without Anoka, will be approximately 3.1 MGD. While it!s~tme that Anoka can commit to up to 1 <br /> .:~-,.~ . <br />MGD to year 2002, they have been concerned with peak hourly demand (vs. peak 24 hour period). <br />In addition, it is very difficult to predict the size of the system to be valeted off to take advantage of <br />the I MGD on a typical day, but not exceed the amount on a high demand day. <br /> <br />It is for this reason the 1 MGD interconnect should be considered in terms of assisting during peak <br />periods, but the full 1 MGD should not be relied upon, rather it should be viewed similar to ensuring <br />a firm well capacity sufficient to meet your maximum day demand. Maximum "hour" demand <br />(usually 3 to 6 hours during summer evenings) is provided by storage plus firm well capacity. <br /> <br />.Water Tower Need <br /> <br />Elevated storage of water also needs to provide for fire flow, in addition to a high use day, as well <br />as providing for normal growth. <br /> <br />There are several theories of determining the amount of storage a utility requires. Often the <br />decision is a matter of risk an organization is comfortable with in relation to the expense of <br /> <br /> <br />