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Attachment C <br />1010.14 Surface Water Management Utility. <br />Subd. 1 General Operation. The municipal surface storm water runoff system shall be operated as <br />a public utility, hereinafter called the "surface water management utility," pursuant to M.S. § 444.075, <br />as amended from time to time, from which revenues will be derived subject to the provisions of this <br />chapter and Minnesota Statutes. <br />Subd.2 Definitions. <br />A. Quarterly Surface Water Management Budget. The estimated quarterly expenditures for <br />planning and inventories, capital expenditures, personnel and equipment and operation of the surface <br />water utility, in accordance with established City policy. This budget shall be established from time to <br />time by City Council resolution. <br />B. Surface Water Management Fee. The quarterly charge developed for each parcel of land <br />pursuant to City regulations and zoning classifications and shall be established by Ordinance adopted <br />by the Council. <br />C. Utility Factor. The ratio of runoff volume, in inches, for a particular land use, to the runoff <br />volume, in inches, for a 1/3 -acre residential lot, assuming a two-inch rainfall and soil conservation <br />service, or (SCS), "Type B" soil conditions. <br />Subd. 3 Establishment of Fees. Surface water management fees shall be established by Ordinance <br />adopted by the Council. The following steps shall be taken to determine the quarterly fee to be <br />charged to each property: <br />A. A calculation shall be made of the total area, in acres, of all zoned property within the City. <br />B. A determination shall be made whether each individual property within these zoning <br />classifications is developed or undeveloped. <br />C. The total number of developed acres of property within these zoning classifications shall be <br />calculated. <br />D. The total acreage of developed property zoned as R 1, single family residential, shall be <br />divided by the total acreage calculated in Step C. This yields the percentage of total developed <br />property that is zoned R 1. <br />E. The City Council shall establish, by resolution, the quarterly budget for the revenue to be <br />generated. <br />F. The portion of the quarterly budget to be charged against properties zoned R 1 shall be <br />calculated by multiplying the percentage found in Step D. by the budge amount in Step E. <br />G. The rate per acre for property zoned R 1 shall be calculated by dividing the revenue for R 1 <br />properties in Step F, by the total acreage of developed properties found in Step C. This rate shall be <br />the basis for all rates charged to any other zoned properties within the City. <br />H. The volume of storm water runoff shall be calculated for all properties zoned R-1, R-2, R 3, R <br />4, 1 1, 12, B 1 and B 2. The methods used for these calculations shall follow the U.S. Department of <br />Agriculture Soil Conservation Service guideline for soil types common to Arden Hills. A curve number <br />shall be chosen for each zoning classification, which shall be an approximate measure of the <br />percentage of impervious surface on the property. The volume of runoff for each zoning classification <br />shall be calculated using the following equation. <br />Q = .(P - 0.2S)5 <br />P + 0.8S <br />Where Q = runoff, cfs <br />