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C- SWPPs Elements#1-13 are required. <br /> 1. Clearing limits will be marked with high visibility fence; <br /> 2. Construction entrance will utilize the existing driveway accesses. <br /> 3. There is a minor potential for soil erosion since the adjacent property is <br /> downstream of the site. The intent is to install a silt-fencing and provide <br /> ground cover for all denuded areas. <br /> 4. Sediment controls will be shown on the plan and consists of the gravel <br /> construction driveway entrance, silt fences and replanting grass/lawn on all <br /> disturbed areas and CB protection to structures downstream of site entrances. <br /> 5. Soil stabilization notes will be added to the plans; <br /> 6. The site has minor slopes to protect. The intent is to install a silt-fencing and <br /> provide ground cover and or temporary plastic sheeting for all stockpile areas. <br /> 7. See#4 above; <br /> 8. The downstream storm system will be protected by providing downspouts at <br /> roof locations and piped to the catch basins and pipe conveyance system. <br /> During construction CB protection will be provided at the existing <br /> downstream Catch Basins and new Catch Basins. <br /> 9. Standard construction notes will be added to the plans; there does not appear <br /> to be a problem with controlling pollutants; On-site pollutant management <br /> from construction activities will take place. <br /> 10. No dewatering issues are anticipated; however dewatering measures will take <br /> place as needed and directed by the Geotechnical Engineer. <br /> 11. Standard construction plans and erosion control notes will be added to the <br /> plan. These notes require maintaining the BMPs. <br /> 12. The project might be phased; seasonal work limitations or clearing/grading <br /> restrictions might be deemed necessary pending weather conditions. <br /> 13. Protect all Bioretention and Rain Garden BMPs from sedimentation through <br /> installation and maintenance of erosion and sediment control BMPs on <br /> portions of the site that drain into the Bioretention and/or Rain Garden BMPs. <br /> Restore the BMPs to their fully functioning condition if they accumulate <br /> sediment during construction. Restoring the BMP must include removal of <br /> sediment and any sediment-laden Bioretention/rain garden soils,and replacing <br /> the removed soils with soils meeting 2014 Stormwater Management Manual <br /> for Western Washington Volume II -Chapter 3 - Page 253 the design <br /> specification. Prevent compacting Bioretention and rain garden BMPs by <br /> excluding construction equipment and foot traffic. Protect completed lawn and <br /> landscaped areas from compaction due to construction equipment. Control <br /> erosion and avoid introducing sediment from surrounding land uses onto <br /> permeable pavements. Do not allow muddy construction equipment on the <br /> base material or pavement. Do not allow sediment-laden runoff onto <br /> permeable pavements. Pavements fouled with sediments or no longer passing <br /> an initial infiltration test must be cleaned using procedures from the local <br /> stormwater manual or the manufacturer's procedures. Keep all heavy <br /> equipment off existing soils under LID facilities that have been excavated to <br /> final grade to retain the infiltration rate of the soils. <br />