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ATTACHMENTS <br />- Calculation Worksheets - <br />Master Design Summary ................... ............................... <br />8 <br />Basin Hydrographs, 10 -Year & 100 -Year .............................. <br />9 -11 <br />Basin Composite CN Values .............. ............................... <br />12 -14 <br />Time of Concentration Calculations, 3 Basins ......................... <br />15 -20 <br />Retention Pond Volume vs. Elevation ..... ............................... <br />21,22 <br />Diversion Ditches: Flow Calculations @ Max & Min Slopes.......... <br />23 -30 <br />Partial USGS Vicinity Map ................... ............................... <br />31 <br />NOAA Storm Isopluvials, Atlas2, Volume 3 .............................. <br />32,33 <br />Drawings <br />Sheet 1 of 5 <br />Existing Site & Offsite Basins (Vicinity) <br />Sheet 2 of 5 <br />Onsite /Offsite Basins w /Site Topographies <br />Sheet 3 of 5 <br />Drainage Improvements <br />Sheet 4 of 5 <br />Diversion Channel and Berm Sections <br />Sheet 5 of 5 <br />Retention Pond Grading <br />