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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, meet or exceed the water quality and sediment management <br /> standards for the City and State, and prevent adverse impacts to the receiving waters for <br /> this project. <br /> A. SITE GRADING/EROSION CONTROL RISK ASSESSMENT <br /> Area proposed to be cleared/worked: 0.24 acres <br /> Average slope for the site: 10% (Area of Disturbance Only) <br /> ErosionlHazard.of Soil Slight <br /> Critical Areas downslope Yes (Steep Slopes) <br /> Site is upstream of an ESA Stream No <br /> Based on the above information and the fact that the slope of the site to be disturbed is <br /> moderate and construction site runoff will pass through silt fencing or other perimeter <br /> filtration features prior to leaving the site, and that if site conditions warrant, additional BMP's <br /> can be 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 project (BMP.C101):..Approximately 50% of the site <br /> will be flagged for disturbance. <br /> 2: Establish Construction Access <br /> The SWPPP calls for the existing paved 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 use the existing gravel driveway for construction entrance. A <br /> • vegetative atuffer.-(BMP C.102),-.silt fencing IBMP. C233) and retention of the existing <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 /> Haack—Taylor Drive 19-1112 <br /> January 2020 <br /> 'Revised:October'2020 Page 6 <br />