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7550 MERIDIAN CIR N, SUITE 120 | MAPLE GROVE, MN 55369 PAGE 1 OF 6 <br />Technical Memorandum <br />To:Nick Tomczik, District Administrator <br />Rice Creek Watershed District <br />From:Joseph Lewis, PE <br />Houston Engineering, Inc. <br />Through:Chris Otterness, PE <br />Subject:RCD 4 Water Management Project <br />Water Management District Charge; Preliminary Determination <br />Date:May 12, 2020 <br />Project:5555-0285 <br />INTRODUCTION <br />The purpose of this project is to provide technical support to the Rice Creek Watershed District <br />(RCWD) for the development of a preliminary allocation of Water Management District charges for <br />the replacement of approximately 2,500 feet of Ramsey County Ditch (RCD) 4 open channel ditch <br />with stormsewer piping. Houston Engineering Inc. (HEI) recently completed a Technical <br />Memorandum under the subject line RCD 4 Water Management Project Phase 3 – Benefit and Cost <br />Apportionment dated January 31, 2020 which estimated construction and engineering costs and <br />provided a summary of the benefit value to each stakeholder for the project. One such benefit was a <br />drainage system repair cost avoidance by replacing the open channel with stormsewer piping. That <br />monetary benefit was determined to be $450,000 and paid for by a Water Management District <br />(WMD) consisting of properties in the hydrologic drainage area of RCD 4. In order to understand the <br />relative tax burden on various land uses, the RCWD Board of Managers requested that a preliminary <br />determination of charges within the RCD 4 WMD be completed. This charge determination may later <br />be used in preparation of a certification of charges. <br />PROJECT FUNDING APPROACH <br />The basic premise of the funding approach is that the costs to construct the various project features <br />should be paid for by the benefitting entity. Benefitting entities include those property owners within <br />the hydrologic boundary of the WMD, as well as those residing beyond the hydrologic boundary of <br />the public drainage, but within the boundary of the RCWD. Property parcels that exist within the <br />WMD and the RCWD boundary have an individually calculated charge based on size and <br />stormwater runoff potential. The following sections will describe how this calculation was determined. <br /> Attachment D