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DRAINAGE CALCULATIONS <br />PROJECT TITLE North County <br />Landfill <br />REFERENCE DRAWING: <br />RETURN <br />PERIOD: 1 r <br />QO_ v <br />CALCULATIONS BY: <br />ESA <br />DATE: 09 Jul 07 <br />PROJECT NUMBER: <br />DESCRIPTION OF WORK: <br />118040/01000000 <br />Drainage Calculations 130% Deslon) <br />CHECKED BY: <br />DATE: <br />DESIGN DRAINAGE RUNOFF <br />POINT t.D.>R AREA COEFF. <br />C <br />CXA <br />SUM (A) COMP. <br />COEFF. <br />C <br />OVERLAND <br />LENGTH SLOPE <br />L <br />LENGTH <br />L <br />GUTTER/CH ANNELlCONOUIT TRAVEL TIME <br />SLOPE MANNING HPDR. VELOCITY OVERLANC GUTTER <br />n RADIUS V TI CHANNEL <br />TIME OF TOTAL <br />CONC. Tc <br />RAINFALL DISCHARGE <br />INTENSITY SUBAREA TOTAL <br />i Oa DI <br />DRAINAGE FACILITIES <br />CONDUIT <br />Tc <br />(tee) <br />(acres) <br />(acres) <br />(feet) <br />((flit) <br />(feet) <br />("M <br />(feet) (flisec) (min.) <br />Tp <br />(min,) <br />(min.) (mM. <br />(tNhcur) <br />(cis) <br />Downdrain - DD1 <br />Al 11.9 0.8 <br />7,13 <br />150 <br />0.03 <br />500 <br />0.02 <br />0.03 <br />0.37 3.61 7.6 <br />23 <br />X0.0 <br />3.22 <br />23.0 <br />11.5 <br />Diversion Berm wf Drainage Ditch <br />23.0 <br />24" CMP 13-ndrafn <br />A2 5.1 0.8 1 <br />3.08 <br />1 <br />100 <br />0.33 <br />500 <br />1 0.02 <br />0.03 <br />0,447 4.10 2.8 <br />2.0 <br />5.0 <br />4.88 <br />15.0 <br />75 <br />LF Bench w/ Drainage Ditch <br />32.9 <br />30' CMP D-drain <br />A3 4-1 0.6 <br />245150 <br />0.33 <br />500 <br />0.02 <br />0.03 <br />0.447 4.10 3.4 <br />2.0 <br />5.5 <br />4.73 <br />11.6 <br />5.8 <br />LF Bench w/ Drainage Ditch <br />44.6 <br />30' CMP Downdrain <br />A4 4.1 09 <br />245 <br />150 <br />0.33 <br />500 <br />0.02 <br />0.03 <br />0.447 4.10 3.4 <br />2.0 <br />5.5 <br />4.73 <br />11,6 <br />5.8 <br />LF Bench w/ Drainage Ditch <br />562 <br />38 CMP Downdrain <br />AS 3.3 0.6199 <br />120 <br />033 <br />500 <br />0.005 <br />0.03 <br />0.895 3.25 3.1 <br />2.6 <br />5.8 <br />4.87 <br />9.3 <br />4.6 <br />Perimeter Bench w/ Drainage Ditch <br />65.4 <br />36" CMP Downdrain <br />Downdrain - DD2 <br />81 5.5 0.8 <br />3.32 <br />150 <br />0.03 <br />.500 <br />0,02 <br />0.03 <br />0.37 3.61 7.6 <br />2.3 <br />10.0 <br />3.22 <br />10.7 <br />5.4 <br />D1-1c n a- w/ Drainage Ditch <br />10.7 <br />18' CMP Downdrain <br />82 27 - 0.5 <br />1.62 <br />100 <br />0.33 <br />500 <br />0.02 <br />0.03 <br />0.4474.10 2.8 <br />2.0 <br />5.0 <br />4.88 <br />7.9 <br />4.0 <br />LF Bench w/ Drainage Ditch <br />- <br />15.9 <br />24' CMP Downdrain <br />83 3.1 0.6 <br />1.84 <br />150 <br />0.33 <br />500 <br />0.02 <br />0.03 <br />0,447 4.10 3.4 <br />2.0 <br />5.5 <br />4,73 <br />8.7 <br />4.3 <br />LF Bench wl Drainage Ditch <br />25.0 <br />24' CMP Downdmin <br />84 3.6 0.6 <br />216 <br />150 <br />.0.33 <br />500 <br />0.02 <br />0.03 <br />9.447 4.10 3.4 <br />2.0 <br />nch w/ Drainage Ditch <br />P DowrWrain <br />85 33 0.8 <br />1.97 <br />120 <br />0.33 <br />500 <br />0.005 <br />0.03 <br />0.895 3.25 3.1 <br />2.6 <br />am <br />eter Bench w/ Drainage DitchMP <br />0-nd aln <br />DRAINI a.xWNCSL(30%Design) <br />