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• Per Phasc I Design: A stormwater relcase rate ot'35 gpm has been used as the <br /> design discharge rate from the detention system to the City's sewer systcm. <br /> • A minimum .5 ft of sediment storage is to be provided throughout thc <br /> detention system. <br /> 'Cable 2- Detention and Sewer Outfall Sum.mary <br /> System Discharge Rate ta Peak 2-yr Detention Volume (ct� <br /> Sewer(gpm) Flow (cfs) Re uired Actual <br /> IioatyardDrainage 35 2.47 30,165 30,374 <br /> Parkin� Lot System -Stormtilter Treatment System <br /> • See Port of Everett Craftsmau District Boatyard Development, Phase 1 Design <br /> Hydraulics and Hydrology Report. <br /> • See North Marinu Redevelopment Infrastruction Phase 1 stormwater report. <br /> VI. Analysis and Design of Required Source Control BMP's <br /> Applicable Construction Site Activities and the appropriute BMP's includc: <br /> I. Handlina of Petrolcum Products <br /> Actions to be taken to prevent pollution from petroleum products include: proper <br /> storage of petroleum products; adequate maintenance of equipment; proper disposul <br /> of waste; retention of oil contaminated sediment on-site. <br /> 2. Nutrient (Fcrtilizerl Application <br /> Proper soil stabilization measures, sediment control and stormwater detenti�n <br /> struclures will be uscd to kecp inorganic nutrient pollutants out of waterways. <br /> 3. Usc of Chemicals or Huzardous Products <br /> Thesc pollutants �vill bc controllcd thraugh implementation of sourcc control soil <br /> crosion and scdimcnl control practiccs. Additionally, proper munagcment and <br /> disposal of all products will t� implementcd. <br /> 4. Washina of Equipment <br /> Large consu•uction equipment and parts will only bc cicancd in areus wherc wusle <br /> �vater can be properly u•catcd prior ro dischargc to the sanitary sewer system. Smaller <br /> p�u•ts shall be deaned with solvcnts and detergcnts that will bc refiltercd/rccycled or <br /> disposcd oP properly. <br /> Applicablc Land Use Activitics and thc appropriatc BMP's includc: <br /> I. Uncovcred Parkin�� <br /> Privatc strccl/p��rking lot swccping with mechanical cicancrs will bc implcmcntcd to <br /> improvc runolT quality from cxisting dcvclorntcnt sitc. <br /> -a - <br />