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4. SWPPP NARRATIVE <br />The intent. of this section is to provide the information necessary to support the engineering <br />plans in order to implement a_design that will; reduce, eliminate or prevent the discharge of <br />stormwater pollutants, meetor exceed the water quality and sediment "management <br />standards for the County and State, and prevent. adverse. impacts to the receiving waters <br />for this project. <br />A. SITE 'GRADING/EROSION CONTROL RISK ASSESSMENT <br />Area proposed to be cleared/worked: 0.42 acres <br />Average slope for the site: 7% (Area of Disturbance Only) <br />Erosion'Hazard of Soil Low <br />Critical Areas downslope No <br />Site.is upstream of an ESA Stream No <br />Based on the above information and the fact that the area of the site to be disturbed is flat <br />and construction site runoff will pass through silt fencing or other perimeter filtration features <br />prior to .leaving the site, and thatif site conditions warrant, 'additional BMP's can, be <br />implemented as corrective' measures the Risk Category for this site is Low Risk. <br />B. SWPPP MINIMUM ELEMENTS <br />- 1: Preserve Vegetation and Mark Clearing Limits <br />The:: first step in the construction process is for the. contractor to fence the limits of <br />clearing/disturbance (BMP C103) prior to any other construction activity... The engineering <br />plans locate and provide the square footages for the areas of grading, clearing,. impervious <br />surfaces and un-disturbed areas on the proposed site. As much of the natural vegetation <br />as, -possible will be preserved_ on this projectf(BMP .C1.01). ,Approximately-100% of the -site <br />may be cleared or disturbed for this project. <br />2: Establish Construction Access <br />The SWPPP calls for.the existing gravel`driveway'to be used as the construction. entrance. <br />At this time winter work is expected during the wet season. <br />3: Control Flow.Rates <br />This project is below the thresholds requiring flow.control for the project. <br />4: Install Sediment, Controls <br />This site SWPPP proposes to construct/maintain a gravel construction entrance (BMP <br />C105 :'Ae etative`i�uffer° PC9OZ ,tltfencin °BMPC233 Yand`retention'ofthe existin <br />)" 9( ) 9 <br />vegetation (BMP C101) will provide a vegetated strip around the work area and any, adjacent <br />property line. The construction of these features should be completed before the clearing <br />and grading of the site. <br />Dhaliwal SFR 19-1208 <br />December 2020 <br />Page 6 <br />.. ;,'Revised: Jaivary'2i721 9 <br />