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� 2. Construdion Access - Construction access will be from North Broadway and 10`" Street by <br /> a stabilized construction entrance per BMP C105. <br /> 3. Control Flow Rates-[nterceptor swales and a sediment trep will control runoff during <br /> rypicai storm events. <br /> 4. Sediment Controls-Silt fencing and storm drain !;��:t protection will prevent sediment from <br /> leaving the site where interceptor swales cannot collect and treat runoff. <br /> 5. S�abilize Soils-Disturbed areas not immediately worked.shall be covered with plastic <br /> sheeting, mulch, or other BMPs, as required in the Washirgton SWte Department of <br /> Ecology(DOE) Manual. <br /> 6. Protect Slopes -Ali soils on slopes shall be stabilized per Element 5 by covering exposed <br /> soils with plastic sheeting, mulch, or other BMPs, as required by the DOE Manual. Slopes <br /> will also be protected through use of interceptor swales, check dams, and other BMPs to <br /> provide an alternative drainage path away from slopes. <br /> 7. Protect Drain Inlets -All catch basins in and adjacent to the construction area will be <br /> protected by storm drain inlet protection per BMP C220. <br /> 8. Stabilize Channels and Outlets-Temporary interceptor swaies shall be stabilized using <br /> BMPs suggested by the DOE, including outlet protedion and channel lining as necessary. <br /> 9. Control Pollutants-All pollutants and construction materials shall be handled in a manner <br /> � to prevent stormwater contamination. Co�struction debris shall be handled and disposed <br /> of in a legal manner offsite. Construction BMPs shall be used to prevent or treat <br /> contamination of stormwater. <br /> 10. Control Dewatering - Dewateri�g for construction of foundations and trenches, which has <br /> similar characteristics to stormwater, wili be discharged into a controlled conveyance <br /> system to be treated in a sediment trap or portable sediment tanks. <br /> 11. Maintain BMPs -The Contractor shali be responsible for maintaining all BMPs. <br /> 12. Manage the Project -The Contractor shall be responsible for inspecting and maintaining <br /> Temporary Erosion and Sedimentation Control (TESC)facilities. The Construction SWPPP <br /> shall be retained onsite, and shall be kept up to date. The Contractor will provide the <br /> name and contact information for the designated Certified Erosion a�d Sedimentation <br /> Control Lead (CESCL) to the City prior to beginning construction. <br /> 4.O ANALYSIS AND DESIGN OF RUNOFF CONTROL BMPS <br /> The interim policy for stomrwater management within Combined Sewer Areas requires thE City of <br /> Everett'S 2010 Stormwater Management hlanual Minimum Requirement a7 - Flow Control be me; <br /> for the project site, with the exception that the pre-developed conditions can be modeled as <br /> existing conditions, rather than Forested conditions. Minimum Requirement #6 - Runoff <br /> Treatment is not required for projects within Combined Sewer Areas. <br /> The Flow control requirement is summarized as follows: stormwater discharges shalf match <br /> developed discharge durations to pre-developed durations for the range of pre�developed <br /> discharge refes ��om 50 percent of[he 2-year recurrence in[erval peak liow up to the fu1150-year <br /> peak fiow. <br /> S[ormwater Sde Plan Report OQO� <br /> Everett Schoo�Distri[t . <br /> Community Resource Center 3 <br /> 208387.10 � <br />