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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 ink Eugene. The average lot size is multiplied by the residential runoff coefficient to <br /> determine the aaverage 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 pier 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 rec gnize the significantly higher impact to the stormwater system associated with large <br /> structures an greater amounts of impervious area, single family dwellings with a building footprint <br /> aqua( to or gr ater than 3,000 square feet will be charged 150% of the basic single family dwelling <br /> rajte. <br /> 30 Manufactured Home Development Rate <br /> IUianufacturec~ home developments are charged a flat rate per individual space based on the <br /> average impe' ious area for a double wide manufactured home, plus any additional common area <br /> impervious s rface (e.g., clubhouse, private streets). The average impervious area for a double <br /> wide manufac ured home space in square feet is multiplied by the stormwater SDC rate per square <br /> foot to determine the stormwater SDC flat rate per manufactured home park development space. <br /> Other impervipus features will be measured separately and charged at the stormwater SDC rate <br /> per square fpot of impervious area. The current stormwater system supporting details for <br /> manufactured 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 dot listed in paragraphs 2.0 and 3.0 above or when ever this Appendix D makes <br /> reference to a rate per square foot, the stormwater SDC collected is determined to be the current <br /> stormwater SDC rate per square foot of impervious area as adopted in the current SDC fee <br /> schedule located in Appendix F. <br /> 5.0 Stormw~ter Impacts Not Attributable to Impervious Area <br /> For all uses nbt 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 /> i <br /> 6.0 Stormvlrater System SDC Impact Reduction Criteria <br /> Reduction o~ll 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 <br /> time of buildiing permit issuance. Reduction of the stormwater SDC will be proportional to the <br /> reduction of 'runoff entering the public system from the fully-developed site. (Note: detention <br /> facilities are; not eligible for stormwater SDC impact reduction.) A 100% reduction in the <br /> stormwater SAC will be granted only for the complete containment and management of all runoff <br /> from the site that would otherwise directly or indirectly enter into the City's public stormwater <br /> system. Rurioff discharged into an area that does not ultimately enter the City's public stormwater <br /> <br /> i <br /> City of Eugene SDC Methodology stormwater, Page D-4 <br /> I <br /> <br />