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r <br /> Chapter 4 - Best Management Practices for Erosion and Sediment Control <br /> r <br /> i <br /> ' 10. OR LESS <br /> D <br /> i <br /> d <br /> Q tg •� : D/2 <br /> r <br /> 2D CONCRETE <br /> r <br /> Concrete Base for Embankment 10 ' or Less in Height <br /> i <br /> r <br /> 10' OR LESS <br />+ D <br /> r <br /> 0 r <br /> 42D <br /> i <br /> 1 /4• STEEL PLATE <br /> 4 <br /> r <br /> Steel Base for Embankment 10' or Less in Height <br /> r <br /> Plate 4.26k Riser Pipe Base Conditions for Embankments Less than 10 Feet High <br /> Source: Virginia DSWC <br /> 4-95 <br />