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Cooley Smiles Dental Clinic 17318.20 October 18,2017 <br /> Drainage Report Section V,Page 3 <br /> Concrete Handling(BMP C151) <br /> Sawcutting and Surfacing Pollution Prevention (BMP C152) <br /> Material Delivery,Storage and Containment (BMP C153) <br /> Element 10:Control Dewatering <br /> De-watering is not anticipated. <br /> Element 11: Maintain BMPs <br /> All temporary and permanent erosion and sediment control BMPs shall be maintained and repaired as <br /> needed to ensure continued performance of their intended function. <br /> Element 12: Manage the Project <br /> • Phase development projects to the maximum degree practicable and consider seasonal work <br /> limits. <br /> • Inspection and monitoring—Inspect, maintain, and repair all BMPs as needed to assure <br /> continued performance of their intended function. Conduct site inspections and monitoring in <br /> accordance with the Construction Stormwater General Permit or local plan approval authority. <br /> • Maintain an Updated Construction SWPPP <br /> - This SWPPP shall be retained on-site or within reasonable access to the site. <br /> - The SWPPP shall be modified whenever there is a change in the design, construction, <br /> operation, or maintenance at the construction site that has, or could have, a significant <br /> effect on the discharge of pollutants to waters of the state. <br /> - The SWPPP shall be modified if, during inspections or investigations conducted by the <br /> owner/operator, or the applicable local or state regulatory authority, it is determined that <br /> the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater <br /> discharges from the site. The SWPPP shall be modified as necessary to include additional or <br /> modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be <br /> completed within seven (7) days following the inspection. <br /> Element 13: Protect Low Impact Development BMPs <br /> The proposed permeable pavement facility shall be protected to the maximum extent feasible from <br /> sedimentation and compaction during construction. <br /> • Do not allow muddy construction equipment on the base material or pavement. <br /> • Do not allow sediment-laden runoff onto permeable pavements or base materials. <br /> • Perform excavation with machinery operating adjacent to the facility and do not allow <br /> heavy equipment with narrow tracks on the bottom of the BMP. <br /> 250 4th Avenue South,Suite 200 <br /> Edmonds,WA 98020 <br /> ENGINEERING ph.425.778.8500 I f.425.778.5536 <br /> www.cgengineering.com <br />