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ATTACHMENTS <br />- Calculations Worksheet — <br />Master Design Summary . 9 -10 <br />Basin Hydrographics, 10 Year & 100 Year 11 -14 <br />Basin Composite CN Values 15 -18 <br />Time of Concentration Calculations, 4 Basins 19 -23 <br />Retention Pond Volumes vs. Elevation 24 <br />Culvert Calculation 25 <br />Diversion & Collection Ditch Flow Calc's 26 -47 <br />NOAA Storm Isopluvials, Atlas 2, Volume 3 48 -49 <br />Partial USGS Vicinity Map 50 <br />- Drawings — <br />Future Onsite & Offsite Basins Sheet 1 of 7 <br />Onsite Basins Sheet 2 of 7 <br />Proposed Drainage Improvements Sheet 3 of 7 <br />Retention Pond 30: Grading & Details Sheet 4 of 7 <br />Drainage Channel Cross Sections Sheet 5 of 7 <br />Drainage Channel Cross - Sections Sheet 6 of 7 <br />Drainage Channel Cross - Sections & Details Sheet 7 of 7 <br />