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1*1 r , <br />A storm water utility is an equiubte funding inetliud because it cfiarges users according to their use <br />of the system, similar to what is done under the water and sanitary sewer utilities. The user charge <br />is not associated in any way with property value, property taxes, or the owner's income. <br />Storm Water Utility Benefits <br />The purpose of creating and implementing a storm water utility is to provide an equitable, dedicated <br />funding source for additional or improved storm water drainage services. Some benefits that can be <br />realized by these services and the activities that help the City realize these benefits arc listed below. <br />Funding from the storm water utility could be used to finance projects that provide these benefits. <br />• Flood control <br />• Water quality control <br />• Wetland protection <br />• Erosion and sediment control <br />• An enhanced storm water conveyance system. <br />Fee Structure <br />The following criteria will be used to determine the total runoff and fee structure: <br />•Model Storm: 5-ycar frequency. 3.6" of rainfall in 24 hours. <br />•Soil Conservation Service Hydrology Methodology to determine amount of runoff. <br />• Average Single Family Residential Unit: 2.0 Acres. 20®/o Impervious Surface. <br />The use of a standard fee for all residential properties is the only practical method to implement a <br />storm water utility. We posed the question on residential storm water utility fee structures on a <br />nationwide public work ’s web site discussion group. W’e received numerous responses and all of <br />the other agencies were using a standard fee for residential properties and some form of <br />equivalency factors for nonresidential properties. <br />Thirty single-family residential properties, ten properties in each lot size zoning district: '/j, I, & <br />2 acre zones, w ere analyzed to determine the average percentage of impervious surface for <br />properties in the City. The weighted average hardcover percentage is 20%. This weighted <br />average is based on the number of homes in each zoning district. <br />Page 2