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13. Storm water treatment is required when 5,000 square (eet or more <br /> of hydraulically connected pavement is created and/or <br /> redeveloped by a project. Treatment of storm water runoff irom <br /> hydraulically connc•cted pavement must occur, per City standard" <br /> prior to discharge of the storm water from the site, or to a stream, <br /> wetlartd, or underground infiltration system. <br /> 14. If suit,able soils exist on the site, underground infiltration systems <br /> (e.g., in(iltration trenches) orsurface storm waterinfiltration <br /> systems (e.g., splash blocks, pe�vious pavers, orsur(ace ponding <br /> areas and/or swales) may be used to evoid creating hydraulically <br /> connected impervious area (rom a storm water detention <br /> standpoint. Section 3-2.2 of the City's Stonn water Management <br /> Manual lists site and design criteria that must be met. <br /> 15. Storm water detention is required wl ien 5,000 square feet or more <br /> of l�ydraulically connected impervious area is created by the <br /> project: <br /> a) If suitable soils exist on tlie site, underground infiltration <br /> systems (e.g., infiltration trenches) orsurface storm water <br /> infiltration systems (e.g., splash blocks, pervic�us pavers, or <br /> sur(ace ponding areas and/or swa/es) may be used to avoid <br /> creating hydraulically connected irnpervious area irom a <br /> storm water detention standpoint. Section 3-2.2 of the City's <br /> Stonn water Management Manual lists site and design <br /> criteria that must be met. I <br /> b) From a storm water detention standpoint, for an impervious <br /> area to be considered hydraulically-disconnected, storm <br /> water runoff(rom the 100-year, 24-hour storm must be fulty <br /> retained and/or infiltrated— without resulting ir, significant j <br /> potential for adverse effects from the infiltrated water(such <br /> as slope saturation ormigration to crawlspaces and/or <br /> basements). However, if the on-site soils cannot support full <br /> infiltration o(the 100-year, 24-I�ourstorm, parfial infiltration <br /> may still be feasible to meet allowable storm water release <br /> requirements. <br /> 15. Sliort plats creating between .5,000 and 10,000 square feet of <br /> hydraulically connected pavement must treat storm water runoff in <br /> a wet vault designed in accordance with City standards. The dead <br /> storage volume of the vaulbtank sliall be equal to the developed <br /> runoff from the 6 month, 24-hour storm. <br /> � <br />