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DRAINAGE CALCULAT4ONS <br />PROJECT TITLE North County <br />PROJECT NUMBER: <br />Landfill <br />118040/01000000 <br />REFERENCE DRAWING: <br />RETURN PERIOD: <br />100- yr <br />CALCULATIONS BY: <br />ESA <br />GATE: 18 Jul 07 <br />DESCRIPTION OF WORK: Drainage CalDulatlons <br />(30% Design) West <br />Perimeter Ditch <br />CHECKED BY: <br />DATE: <br />DESIGN DRAINAGE RUNOFF <br />P0114T I.D. # AREA COEFF. <br />C <br />C.A SUM (A) COMP. <br />COEFF. <br />C <br />OVERLAND <br />LENGTH SLOPE <br />L <br />LENGTH <br />L <br />GLnTER/CHANNELICONDUIT TRAVEL TIME <br />SLOPE MANNING HYDR. VELOCITY OVERLAN GUTTER <br />n RADIUS V TI CHANNEL <br />TIME OF TOTAL <br />CONC. To <br />RAINFALL DISCHARGE <br />INTENSITY SUBAREA TOTAL <br />Qa OI <br />DRAINAGE FACILITIES <br />CONDUIT <br />Tc <br />(acs) <br />(acres) (acres) <br />(feet) <br />(tuft) <br />((eat) <br />(N(t). <br />(teat) (Neat) <br />(min.) <br />TP <br />(min.) <br />(Mtn.) I (min.) <br />(in(how) <br />(ds) <br />• all 33 0.8 <br />3.32 <br />150 <br />0.03 <br />500 <br />0.02 <br />0.03 0.37 3.61 <br />7.6 <br />2.3 <br />10.0 <br />322 <br />10.7 <br />5.4 <br />Der n Bmm Drainage DOM <br />10.7 <br />18' CMP D -v drain <br />62 27 0.6 <br />1.62 <br />100 <br />033 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />2.8 <br />2.0 <br />5.0 <br />4.88 <br />7.9 <br />4.0 <br />LF Bench w/ Drawtage Ditch <br />15.9 <br />24' CMP Down brain <br />B3 3.1 0.6 <br />1.84 <br />150 <br />0.33 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />3.4 <br />2.0 <br />5S <br />4.73 <br />8.7 <br />4.3 <br />LF Bench w7 Drainage Ditch <br />25.0 <br />24' CMP Downdmin <br />B4 3.8 0.$ <br />2.16 <br />150 <br />0.33 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />3.4 <br />2.0 <br />5.5 <br />4.73 <br />10.2 <br />5.1 <br />LF Bench w! Drainage Ditch <br />35.1 <br />30' CMP Doatndmin <br />05 33 0.6 <br />197 <br />120 <br />0.33 <br />'500 <br />0.005 <br />0.03 0.895 3.25 <br />3.1 <br />2.6 <br />5.8 <br />4.67 <br />92 <br />4.6 <br />PerSnster Bench w! Drainage pitch <br />442 <br />30' CMP DownOrain <br />2A O.8 <br />1.44 <br />1000 <br />3'20 <br />3.0 <br />8.6 <br />3.68 <br />5.3 <br />45.4 <br />Canbined O <br />All 1t.9 0.6 <br />7.13 <br />ISO <br />0.03 <br />500 <br />0.02 <br />0.03 0.37 3.61 <br />7,6 <br />2.3 <br />10.0 <br />3.22 <br />23.0 <br />11.5 <br />Downdrain - DDI <br />Diver -ion Berm w! Drainage Ditch <br />23.0 <br />24' CMP Downdraln <br />A2 Sa 0.8 <br />3.08 <br />100 <br />033 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />2 8 <br />2.0 <br />5.0 <br />4.88 <br />15.0 <br />7.5 <br />LF Bench w/ Drainage Ditch <br />61.9 <br />30' CMP Dowrrdmin <br />A3 4.1 0.8 <br />245 <br />150 <br />0.33 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />3.4 <br />2.0 <br />5.5 <br />473 <br />11.6 <br />6.8 <br />LF Bench wy Drainage Dinh <br />44.6 <br />30' CMP Downd- <br />A4 4.1 0.6 <br />2.45 <br />150 <br />033 <br />500 <br />0.02 <br />0.03 0.447 4.10 <br />3.4 <br />2.05.5 <br />. <br />4.73 <br />11.6 <br />5.8 <br />LF BenchwDitch <br />562 <br />36' CMP Downdrain <br />AS 330.6 <br />1.99 <br />120 <br />0.33 <br />500 <br />0.005 <br />0.03 0.895 325 <br />J.1 <br />2.6 <br />5.8 <br />4.87 <br />93 <br />4.8 <br />Penmeter Bench w! Drainage Ditch <br />65A <br />36' CMP Downdrain <br />DRAIN1a.xls/NCSL(30e/*Design) (W) <br />