FIGURE 6 <br />Stormwater System <br />Level of Service <br />Impact Measurement <br />D Impervious surface <br />System Value <br />Replacement costs <br />(minus) <br />Assessable costs <br />(equals) <br />SDC eligible costs <br />Formula: <br />Cost of Service (PER ACRE) <br />SDC eligible costs Cost per <br />_ .impervious <br />Acres of acre <br />impervious surface <br />Formula: <br />Cost of Service (PER SQUARE FOOT) <br />Cost per Cost per <br />impervious acre square foot of <br />= impervious <br />Square feet per acre surface <br />NOTE: The cost per unit of measure, can be found in the current adopted SDC fee schedule in <br />Appendix F. <br /> <br />City of Eugene SDC Methodology Stormwater, Page D-2 <br />____ <br />