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<br /> Page 1 of 5 <br /> <br /> <br />Technical Memorandum <br /> <br />To: Sue Polka, PE <br /> Public Works Director/City Engineer <br /> <br />From: Brian Weiss, PE <br /> AE2S <br /> <br />Re: Water Model Review <br /> Arden Hills Water Distribution System <br /> <br />Date: March 9, 2018 <br /> <br /> <br />Purpose of Hydraulic Analysis <br />This technical memorandum documents the review of system analysis using the existing Arden <br />Hills hydraulic model in conjunction the Roseville hydraulic model. The two hydraulic models <br />were combined during construction and calibration of the Roseville hydraulic model. The <br />Roseville system and the south pressure zone of the Arden Hills system are integral with each <br />other as water can flow both directions between the connections within each of the systems. <br /> <br />The primary tasks related to this review are the following: <br /> <br />1. Evaluate benefits of installing a trunk water main in Old Snelling Avenue North between <br />County Road E2 and County Road E. <br />2. Determine preferred timing of a new booster station installation in the vicinity of Old <br />Snelling Avenue North and Interstate 694 to support planned development of the TCAAP <br />project. <br />3. Determine preferred timing to provide additional water storage (i.e., a new water tower) in <br />the north system to support planned development of the TCAAP project. <br />4. Prepare a technical memorandum of findings and recommendations. <br /> <br />Basis of Analysis <br />The water demands used in the analysis are presented in the following Table 1. The future <br />demands include an allocation of 0.75 MGD average day demand for the TCAAP <br />development.