9509 19TH AVE SE 2018-01-02 MF Import

The options for treatment of runoff from hydraulically -connected pavement are: a. An infiltration basin with pretreatment*, if suitable soils exist on the site b. A wetpond C. A constructed wetland d. A storm water technology that has received a GULD (General Use Level Designation) from the Washington Statc• Department of Ecology for either basic or enhanced treatment, with pretreatment' 13. Storm water detention is required when 5,000 square feet or more of hydraulically - connected impervious area is created by a project. %-If suitable soils exist on the site, underground infiltration systems (e.g., infiltration trenches) or surface storm water infiltration systems (e.g., splash blocks, pervious pavers, or surface ponding areas and/or swales) may be used to avoid creating hydraulically -connected impervious area from a storm water detention standpoint. Section 3-2.2 of the City's Stormwater Management Manual lists site and design criteria that must be met. %From a storm water detention standpoint, for an impervious area to be considered hydraulically -disconnected, storm water runoff from the 100-year, 24-hour storm must be fully retained and/or infiltrated — without resulting in significant potent,al for adverse effects from the infiltrated water (such as slope saturation or migratiin to crawlspaces and/or basements). However, if the on -site soils cannot support full infiltration of the 100-year, 24-hour storm, partial infiltration may still be feasible to meet allowable storm water release requirements. 14. All storm water facilities shall be designed in accordance with applicable City standards and/or design policies. 15. Replace any damaged or broken sidewalk along this property's frontage. 16. Landscaping must be provided per Section 35 of the Zoninc, Code. At a minimum this must include the following: a. A landscape strip a minimum of fifteen (15) feet wide must be provided along the east property line where the property abuts the R-1 Zone. This area shall be planted with Type II landscaping. b. A landscape strip a minimum often (10) feet wide must be provided along the north property line where the property abuts the R-1 zone. These areas shall be planted with and Type I landscaping. c. A landscape strip a minimum of fifteen (15) feet wide must be provided along the south property line. This area shall be planted with Type II landscaping. d. Landscaping shall be provided in the interior of the parking lot for the proposed 56 new parking stalls. Landscape areas must be planted and located per Section 35.080E of the Zoning Code.