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Spheros Environmental | www.spherosenv.com | Page 3 <br /> <br /> <br />model, Spheros will discuss the delineation criteria and the WHPA delineation method with <br />MDH. <br />The following scope and costs are based on our understanding of the City’s current well field <br />and the experience of Spheros’ Project team completing the previous City WHP Plan in 2013 and <br />completing WHP Plans for wells completed in the Prairie du Chien and Jordan aquifers for other <br />communities, and our previous experience working on groundwater projects within this area of <br />the Twin Cities Metropolitan Area. <br />1. SCOPE OF SERVICES <br />Spheros designed the proposed services outlined herein to meet Project objectives. The Scope <br />of Services presented herein also provide assumptions and exclusions associated with the work. <br />This proposal outlines the tasks necessary for delineation of the wellhead protection area <br />(WHPA), assessment of the well and aquifer vulnerability, and associated reporting requirements <br />commonly required by the MDH. <br />Task 1: Assemble Data Elements <br />Our review of the MDH’s Scoping Decision Notice and our understanding of the MDH <br />requirements and MODFLOW modeling will allow us to efficiently complete the Project. A <br />Determination of Aquifer Properties - Aquifer Test Plan (DAP-ATP), will be required by the <br />wellhead rule to document the aquifer transmissivity used in the delineation process. This task <br />includes preparation of the DAP-ATP. No additional aquifer testing is anticipated, but new data <br />may be incorporated compared to the previous 2013 Plan. In addition, reports, maps, <br />hydrogeologic cross sections, publications, and personal communication with WSB, City, and <br />MDH staff will also provide information. This proposal assumes that no additional cross sections <br />will be needed as part of this Plan. <br />Task 2: Delineate WHPAs Using MODFLOW <br />Spheros will plan to use an existing numerical groundwater flow model, the Northeast Metro <br />Lakes Groundwater (NMLG) model, that includes the City and was previously created, updated, <br />and recalibrated by the United States Geological Survey (USGS), Minnesota Department of <br />Natural Resources (DNR), and multiple consultants. This model will either be used at its current <br />extent, or reduced further to a local-scale model. It will be updated and recalibrated by updating <br />the model layers in the area of the City with geologic information obtained since the completion <br />of the model and the City’s 2013 WHP Plan.