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_. <br />SEDCAD ASSUMPTIONS <br />24" CMP - SOUTHWEST VENTILATION BOREHOLE ACCESS ROAD <br />1. drainage area - 221.1 acres <br />2. curve number = 76 <br />3. used longest flow path for the drainage area <br />4. flow path number 1, type 3 (overland flow, short grassland) <br />5. flow path number 2, type 8 (large diversion or gully) <br />6. 24" headwater, 0 tailwater <br />7. 40' culvert, 1~ or 5~ slope, <br />8. culvert projecting from fill <br />•~ <br />• <br />TAB 3.15, PG 2 <br />Permit Renewal No. 3 ~ ~~1~99 <br />