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< <br /> 2.0 Single Family Dwelling and Duplex Rate <br /> The stormwater SDC for single family development is a flat rate based on the average lot size in <br /> square feet in Eugene. The average lot size is multiplied by the residential runoff coefficient to <br /> determine the average square feet of impervious surface per lot. This amount is multiplied by the <br /> current stormwater SDC rate per square foot to determine the single family residential stormwater <br /> SDC flat rate per dwelling unit with a building footprint less than 3,000 square feet. The stormwater <br /> SDC for a duplex is calculated as two times the stormwater SDC flat rate charge of asingle-family <br /> dwelling. For current stormwater SDC supporting details, see Table 6. For stormwater formula <br /> calculations, see Figure 6. <br /> In order to recognize the significantly higher impact to the stormwater system associated with large <br /> structures and greater amounts of impervious area, single family dwellings with a building footprint <br /> equal to or greater than 3,000 square feet will be charged 150% of the basic single family dwelling <br /> rate. <br /> 3.0 Manufactured Home Development Rate <br /> Manufactured home developments are charged a flat rate per individual space based on the average <br /> impervious area for a double wide manufactured home, plus any additional common area impervious <br /> surface (e.g., clubhouse, private streets). The average impervious area for a double wide <br /> manufactured home space in square feet is multiplied by the stormwater SDC rate per square foot <br /> to determine the stormwater SDC flat rate per manufactured home park development space. Other <br /> impervious features will be measured separately and charged at the stormwater SDC rate per <br /> square foot of impervious area. The can-ent stormwater system supporting details for manufactured <br /> home park developments can be found in Table 6, sections 3 and 4. <br /> 4.0 Commercial, Industrial and Other Rate <br /> For all uses not listed in paragraphs 2.0 and 3.0 above or when ever this Appendix E makes <br /> reference to a rate per square foot, the stormwater SDC collected is determined to be the current <br /> Stommwater SDC rate per square foot of impervious area as adopted in the current SDC fee schedule <br /> located in Appendix G. <br /> 5.0 stormwater Impacts Not Attributable to Impervious Area <br /> For all uses not listed in paragraphs 2.0, 3.0, and 4.0 above, where any development type creates <br /> an impact through discharges to the public stormwater system, as allowed by EC 6.610, which are <br /> not attributable to creation or modification of impervious area, will have SDCs calculated by <br /> evaluating the equivalent impervious area which would generate a similar impact. <br /> 6.0 stormwater System SDC Impact Reduction Criteria <br /> Reduction or elimination of stormwater which otherwise would be discharged into the public <br /> stormwater system may result in a corresponding reduction of stormwater SDC collected at the time <br /> of building permit issuance. Reduction of the stormwater SDC will be proportional to the reduction <br /> of runoff entering the public system from the fully-developed site. (Note: detention facilities are not <br /> eligible for stormwater SDC impact reduction.) A 100% reduction in the stormwater SDC will be <br /> <br /> granted only for the complete containment and management of all runoff from the site that would <br /> May 1, 1997 City of Eugene SDC Methodology Page E-4 <br /> <br />