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5.1.5 <br />The City of Ramsey currently preferentially utilizes wells from their south-central well field that <br />includes wells 3 - 8. City Wells 1 and 2 are to the southeast of the primary well field and has a <br />decreasing utilization rate. Well locations are depicted on Figure 1 in Appendix D. <br />As discussed in Section 4, the average daily water demand from 2007 to 2017 ranged from 1.62 <br />to 1.92 million gallons (MGM. The maximum daily demand ranged from 4.1 to 5.5 IV1GD. The <br />projected annual average water demand for the City is expected to increase to 3.5 MGD and up <br />to a projected daily maximum of 10.2 MGD in the year 2040. <br />Aquifer Response to Well Pumping <br />Aquifer response to well pumping can be measured in many ways. The most common and <br />observable measurement within a well is through measurement of the drawdown, or change in <br />static water levels, and also through calculating the well specific capacity. These measurements <br />help to quantify water use within a well. As a well continues to pump it creates a radius of <br />influence where nearby water Fs drawn down into what is called a cone of depression. This <br />correlates to well interference and can have a combining effect when multiple high capacity wells <br />are pumping. These terms are discussed in the Minnesota Department of Health publication, "A <br />Guide to the Rules Relating to Wells and Borings(Minnesota Rules, Chapter 4725).The adjacent <br />image from the handbook describes this terminology. The following sections will discuss these <br />terms in detail. <br />FEASIBILITY STUDY -DRAFT RAM SY 154354 <br />Page 16 <br />