11310 EVERGREEN WAY 2018-01-01 MF Import

' � � 13. All exposed ground must be reseeded within 30 days of the completion of constniction. If reseeding is not practical due to weather or seasonal problems,the ground must be covered with mulch as directed by the City Engineer. l4. Temporary erosion control measures for constcuction activity must be operetional prior to commencement of any clearing or earthwork. ]5, City GIS data shows a stormwater pipe crossing the northeastem paRion of the site and discharging to the "unnamed aeep/tributar�'.It appears that this pipe represents a prcvious tightlining of a drainage way across the site. In order for the site to be developed as proposed,relocation of the pipe or modification of the existing pipe(in accordance with City building standards)will be required. Any relocation or modification of the pipe shall be performed by the applicenYs representative, at the epplicant's expense. 16. Ciry stnndards require treatment of storm water runoff&om hydraulically-connected pavement priot to discherge of the storm water&om the site. 17. Storm water treatment is required when 5,000 square feet or more of hydrau::cally-connected pevement is created and/or redeveloped by a project.Treatment of storm water runoff&om hydraulically-connected pavement must occw,per City standerds,prior to discharge of the storm water from the site, or to a stream,wedand,or underground infiltration system. • If suituble soils exist on thc site,Low Impuct Development techniques(e.g.,permeable pavement, bioretention areas,and dispersion through stream/wetland buffers) may be used to avoid creatin� hydraulically-connected pavement from a stormwater treatment standnrd. • From a stormwater treah.ient standpoint, for a paved area to be considered hydraulically-disconnected, srormwater runofF from at least the 6-month,24-how storm must be fully retnined and/or infiltreted. l8. The options for treatment of ru�off&om hydraulicnlly-connected pavement are: a) an infiltration bnsin with pretreatment*,if suilable soils exist on the>itc b) a wetpond c) a constructed wetland d) a stormwater technology that has received u GULD(Gencral Use Level Designation)from the Washington State Depwtment of Ecology for either basic or enhanced treatrnent,with pretreatment' *acceptable pretreutment systems are either a wctvault or tank designed in accordance wich City standards end contuining 30%of the 6-month,24-hour storm as dead storage,or a pretreatrnent system that has obtained a GULD for pretreatnent from the Washington Stute Depariment of Ecology 5 �� �_ ,