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I <br /> I <br /> View Looking Upstream 18" (0.5m) <br /> — A <br /> I12"(150mm) <br /> \\ \\\ \ . i\/////Ogo0 ° O pr /\ / .\ <br /> //,// \/ • °oQ� � � / / 24"(0.6m)/\ 7\ oo. , ..o 000 7, /,\ <br /> I NOTE: • °o°� a000 <br /> Ke stone into channel banks and v 7 / <br /> y /\�K\\ \\/\\/ <br /> extend it beyond the abutments a '\, i\ <br /> I minimum of 18" (0.5m)to prevent — A <br /> flow around dam. <br /> I Section A - A <br /> FLOW ° 0: <br /> 24"(0.6m) dbo°10 ° <br /> /�^ 0�jOOa%°°•o <br /> '// / / / °`boy°'°°L- o a° a ,,Opo°, <br /> \, \ \ ° °Q°° ° 70°p° <br /> /\ /\ / /X \\< \ <br /> 8'(2.4m) <br /> ISpacing Between Check Dams <br /> 'L'=the distance such that points'A'and <br /> 'B'are of equal elevation. <br /> Ig` °• °&Sp POINT'A' r—POINT'B' <br /> \ \ \ \ \ \ a•G• <br /> /\\\// \\\\\ \\\ \\ \ •\ a <br /> INOT TO SCALE <br /> Figure 4.13-Check Dams <br /> I <br /> I <br /> I <br /> February 2005 Volume ll-Construction Stormwater Pollution Prevention 4-77 <br />