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Table A <br /> Time of Concentration <br /> City of Stockton —Austin Road Landfill <br /> Time of Concentration— E)dsting Conditions(1) <br /> SQUAT— VELOCITY TRAVEL TRAVEL <br /> DISTANCE SLOPE ION(2) norK (FPS) TIME(MIN) TIME(HR) COMMENTS <br /> 300 0.013 S 0.06 0.29 17 0.3 <br /> 1425 0.020 c 10 1.41 17 0.3 Assumed ave.slope of Creek <br /> 5500 0.005 C 27 1.91 48 0.8 <br /> 7225 Tc(hours) = 82 1.4 <br /> Time of Concentration— Post Development Conditions(1) <br /> EQUAT— VELOCITY TRAVEL TRAVEL <br /> DISTANCE SLOPE ION (2) n or K (FPS) TIME(MIN) TIME(HR) <br /> 300 0.050 S 0.15 0.24 21 0.3 <br /> 1200 0.050 c 17 3.80 5 0.1 <br /> 7000 0.005 C 27 1.91 61 1.0 Assumed ave.perimeter ditch <br /> slope of 0.5% <br /> 8500 Tc(hours) = 87 1.5 <br /> Notes: <br /> (1)Based on TR55 methods <br /> (2)S =Time of concentration based upon Sheet now equation(3-3), T 9.007(kL <br /> (P)^5 x s^A <br /> C=Time of concentration equation based upon average velocity,equation(3-1), T= L <br /> 3600 V <br />