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Sump 6 will have approximate dimensions of 30 ft x 18 feet with a depth of 5.0 <br />feet. A 2' tall berm will be placed on the downhill side. The berm will have 2H:1V <br />sideslopes. <br />Each sump will have the required volume below the emergency spillway, reflecting the volume to store <br />the 10 year 6 hour event. Since the areas are so constrained on the steep slopes on site, further detail on <br />the sumps is not possible. <br />The sump spillways will be able to pass the following 100 -yr 6 -hr peak flows: <br />Sump 1: 2.88 cfs <br />Sump 2: 2.98 cfs <br />Sump 3: 0.85 cfs <br />Sump 4: 0.63 cfs <br />Sump 5: 2.72 cfs <br />Sump 6: 1.14 cfs <br />The typical sump schematic is shown below: <br />Yule Quarry January 2013 27 <br />