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<br /> <br />34) <br />35) <br />Justify Use of the Chosen Curve Number and the Slow Hydrograph <br />Option <br />Response <br />Pending, not included with this submittal. This item will be <br />addressed at a later date. <br />Provide SEDCAD Runs Used to Size the Temporary Section 16 Pond <br />Response <br />Pending, not included with this submittal. This item will be <br />addressed at a later date. <br />36) Map Revision <br />Response <br />37) <br />38) <br />Map 12 correctly shows the location of the West Pit Pond. Map <br />20 shows Pre and Post Mining Cross Sections. There is no need <br />to revise either map. <br />Revise Drainage Boundary on Map 10 and Change Affected <br />Calculations <br />Response <br />Map 10 drainage boundary lines are designed to show pre <br />mining, Regional Hydrology, therefore, making changes to the <br />north and northeast drainage boundary lines is unjustified. <br />The West Pit drainage area used in the calculation of the West <br />Pit Pond is shown on Map 12, Hydrology South Sheet. <br />Map 6 Mapping Unit Letters <br />Res onse <br />The mapping unit letters tie to the letters used with the soil <br />series further described in Section 2.04.9 Soils Resource <br />Information. The letter designations were used by the Soil <br />Conservation Service to indicate slope. For example a "D" <br />indicates 3 to 12 percent slope and "E" indicates 12 to 25 <br />percent slopes. <br />10 <br />