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t <br />P;. <br />The maintenance shop area currently drains toward the northwest. Since the <br />maintenance shop is approximately 1/2 mile from the site boundary, there is <br />only a minimal chance for actual runoff from the shop area reaching the site <br />E boundary. Additionally, the terrain from the shop to Waverly Road contains <br /><€ <br />many natural ponding areas to trap pollutants and sediment and is vegetate d to <br />further trap pollutants. <br />'I <br />Portions of the landfill areas, Figure B, drain north and south across the -non <br />landfill site boundary; drainage is all natural to the site boundaries. These <br />landfill side slopes have approximately 15 inches of intermediate soil cover, <br />are vegetated as needed and maintained for erosion and settlement rupture o <br />cover. <br />The storm drainage system along with the erosion and natural control practices <br />is considered adequate to control the potential of pollutants to offsite <br />streams. It is recommended that the facilities engineer observe the runoff to <br />Potter Creek, and south and west storm drainage exit points along the site's <br />boundaries for visual indicators of erosion sediment loading, as described in <br />section 4.7 of this SWPPP. <br />4_5 SEDIMENT AND EROSION PREVENTION <br />in surrounding areas of working modules, <br />Vegetation is maintained as needed <br />and daily compaction of cover soil minimizes the potential of sediment loading <br />in storm water. If needed, grass seeding for erosion control in the <br />surrounding areas is planted. The vast majority of the site (90%), except for <br />the active fill areas, is covered with natural growth. <br />' 10 <br />