<br />Ordinance -- Page 3 of 9 <br /> <br />2. For interior alterations of an existing structure Replacement of impervious surface <br />area that does not expose more than 1,000 square feet of soil; <br /> <br />3. For the construction of more than 1,000 square feet of impervious surface that <br />replaces existing impervious surface for purposes of maintenance or repair for the <br />continuance of the current function, providing that as part of such m Maintenance and/or <br />repair the applicant is replacing less than 50% of the length of the stormwater drainage <br />system (including pipes, drainageway catch basins and drywells) on the development <br />site activities on structures or facilities to prevent decline, lapse or cessation in <br />the use of the existing structures, facilities, or impervious surface, as long as no <br />additional hydrologic impacts result from the repair or maintenance activity; <br /> <br />4. For the construction of new or replaced impervious surface where all of the <br />stormwater runoff from the impervious surface will discharge into an on-site, privately <br />maintained underground injection control system that is registered and approved by the <br />Oregon Department of Environmental Quality; <br /> <br />5. For the construction of a single-unit dwelling or duplex on a lot or parcel that was <br />created by a land division application submitted and approved by the City prior to March <br />1, 2014, that is consistent with the approved land use application and the City’s <br />stormwater quality (pollution reduction) standards in place at the time of the land division <br />application; or <br /> <br />6.4. For the c Construction of a single-unit dwelling or duplex impervious surface area <br />on a lot or parcel that was created by a land division application that included the <br />construction of adjoins a public or private street or shared driveway submitted and <br />approved by the City after March 1, 2014, if the lot or parcel adjoins the public or private <br />street or shared driveway and the facility within the public or private street or shared <br />driveway is an infiltration or filtration that includes a stormwater quality facility <br />designed and sized to accommodate infiltrate or filtrate the water quality design <br />stormwater runoff from the adjoining lots or parcels at full buildout of the lots or parcels. <br /> <br />(fc) The standards in EC 9.6792(3) do not apply to land use applications or development <br />permit applications within the S-DR Downtown Riverfront Special Area Zone. Instead, the <br />standards at EC 9.3155(17) apply. <br /> <br />(3) Standards. <br /> <br />(a) For land use applications not proposing the construction of a public or private street or <br />shared driveway, the applicant shall submit a site development plan that delineates the <br />following conditions existing on the development site <br /> <br />(a) Stormwater quality facilities for water quality treatment shall be selected from and <br />sited, designed, and constructed according to the Stormwater Management Manual. <br />The selected stormwater quality facilities shall treat all stormwater runoff from all new