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� 4. MOUND SIZiNG <br /> A. Calcu[ate Clean Sond L�ft: 3 feet minus Depth to Limiting Condition (1.C) =Clean Sand Lift (1 ft minimum) <br /> 3.0 ft - 1.5 ft = 1.5 ft <br /> B. Catcutate Upslope Height:Cleae Sand Lift (4.A)+media depth (1 ft.)+��.er (1 ft.)=Upslope Height <br /> 1.5 ft + 1.0 ft + 1.0 ft a 3.5 ft <br /> �. Setect Upslope Berm Muttiplier <br /> (based on land stope): 3.03 (figure D-34) <br /> D. Cakutate Ups(ope 8erm�dth:Mu(tiplier (4.C)X Upslope Mourrd Height (4.6)=Upsfope Berm�dth � <br /> 3.03 x 3.5 ft = 10A ft <br /> E. Calculate Drop in Elevation Under Bed:Bed�dth (2.6} X Land Slope (1.D�=100=Drop (ft) <br /> 1Q.0 x 8.0` ;K = 100� b.8 ft <br /> F. Catculate Downslope Mound Height:Upslope Height (4.B)+prop;n Etevation (4.E)=Oewnslope Height <br /> 3.5 ft + ` 0.8 - ft = 4.3 ft <br /> G, Select Downstope Berm Multiptier <br /> (based on land slope): 3.95 (figure D-34) <br /> H. Catculate Downslope Berm Width:MultipHer (4.G)X Downslope Height (4.F)=Oewnstope Berm Width <br /> 3.95 x 4.3 ft � 2Q.0 ft <br /> I. Calculate Minimum Berm to Cover Absorption Area:Downstope Absorptiort Width (3.6 or 3.C)+4 ft. =ft <br /> 10.0 ft +�� ft = 14.0 ft <br /> J. Design Downsiope Berm =greater of 4H and 4L• 20.0 ft <br /> K. Se[ect Endslope Berm Muttiptier: 3•� (usually 3.0 or 4.0) <br /> L. Catcutate Er�fslope Berm (4.K)X Downslope Mound Height (4.F) _E►�slope Berm Width <br /> �.� x 4.3 ft = 'l0.0 ft <br /> M.Ca�ulate Mound Width: Upstope Berm Width(4.D)+Bed Nrdth (2.B)+pownslope Berm�dth (4.J)=ft <br /> 10.0 ft + 10.0 ft + 20:0 ft = 40.0 ft <br /> W. Catculate Nbund Length:fndstope Berm Width (4.L)+ged Length (2.C)+Endslope Berm Width (4.L)=ft <br /> 10.0 ft + 50.0 ft + 10.0 ft = 70A - ft <br /> aa4:s����ap�ren�� <br /> Land S10p!'� 0 1 2 3 4 5 6 7 8 9 10 it 12 13 14 15 16` 17 18 19 20 2t Y! 23 24` 25 <br /> UpSlOp2 3:1 3.00 Z.91 2.83 1.75 2.68 2.61 2.Sd 2.�18 2.�t2 L36 2.31 2Z6 2.21 2.17 2.13 2.09 L06 2.03 2.00 1.97 1.45 1.93 1.91 1.84 1.87 1.85 <br /> Bern�Ratio 4:1 4.00 3.85 3.?0 3.57 3.45 3.33 3.23 3.f2 3.03 2.44 LS6 L78 2.70 2.62 2.55 T.4E 2.41 2.35 2.29 3.23 2.t8 2.t3 2.OB 2.03 t.� f.93 <br /> Litid S % 0 1 2 3 4 5 6 7 8 9 'f0 1t 12 13 f4 l5 16 ' 17 18 14 20 11 Z2 23 `24 35 <br /> D0�r1151Op2 3:1 3.00 3.04 3.19 3.30 3.41 3.53 3.66 3.80 3.95 4.11 �1.29 d.q8 J.69 �t.95 514 5.55 5.86 6.2d 6.63 7.0•1 7..i7 7.93 d.d2 8.93 9..14 t0.02 <br /> 821'in Rdtio A:1 4.OD d.i7 A.35 d.51�.76 5.00 5.26 3.56 5.89 6.25 6.67 7.14 7.69 8.29 8.92 9.5J 10.24 11L% 11.67 1I.�l2 13.19 13.44 f4«B2 15.67 16.59 t7Ad <br /> 5. ORGANIC LOADING: (Optional) <br /> A. Organic toading = Design Flow X Estimated CBOD in mg/L in the effluent X 8.35+1,000,000(See Table 111) <br /> �gpd X�]mg/L X 8.35 t 1,000,000 = ��lbs CBOD/day <br /> B• Catculate System Orqanic Loading: lbs. CBOD (5.A) �Bed Areu (2.A) =lbs/day/ft� <br /> ��lbs/daY + C�ftZ = �lbslday/ft2 <br /> Table ill (7083.4030) <br /> Treatment ` CBOD{mg/L) <br /> LevelA 15 <br /> Levet B 25 <br /> LevelC 125 <br />