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Table TR-91-31-1 (cont.) <br />SEDIMENTATION POND "F" - DESIGN CALCULATIONS <br />• (Continued) <br />Equivalent Peak Discharge (cfs @ 34 cfs/inch runoff) <br />10 year - 24 hour <br />25 year - 24 hour <br />Actual Peak Discharge (cfs) <br />10 year - 24 hour <br />25 year - 24 hour <br />Runoff Volume (acre-feet) <br />10 year - 24 hour <br />Universal Soil Loss Equation Parameters <br />Rainfall Factor (R) <br />Soil Erodibility Factor (K) <br />Topographic Factor (LS) <br />Cover and Crop Management Factor (C) <br />• Erosion Control Practice Factor (P) <br />i <br />Soil Loss (tons/acre/year) <br />Sediment Delivery Ratio <br />Sediment Yield (tons/acre{year) <br />Three Year Sediment Yield (acre-feet @ 80.3 lbs/ft3) <br />Spoil Spring Discharge (acre-feet 1 day @ 1500 gpm) <br />Design Pond Capacity - Existing (acre-feet) <br />(based on 3 years sediment yield + 10 year - 24 hour <br />runoff volume) <br />Design Pond Capacity Expansion (acre-feet) <br />• (based on 3 year sediment yield (0.17) + spoil <br />sprin discharge (6.63) + 10 year - 24 hour runoff volume <br />(2.33) <br />21.1 <br />28.2 <br />27.5 <br />36.8 <br />2.33 <br />30 <br />0.32 <br />2.0 <br />0.46 <br />1.00 <br />8.83 <br />0.25 <br />2.21 <br />0.17 <br />6.63 <br />2.50 <br />9.13 <br />Ex. 29-5 <br />