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� <br /> 4. MOUND SIZING <br /> � A. Calculate C(ean Sond Lift: 3 feet minus Depth to Limiting Condition (1.C) = Clean Sand Lift (1 ft minimum) <br /> 3.0 ft - 2.5 ft = 1.0 ft <br /> � B. Calculate Upslope Height: Clean Sand Lift (4.A) +media depth (1 ft.) + cover (1 ft.) = Upslope Height <br /> 1.0 ft + 1.0 ft + 1.0 ft= 3.0 ft <br /> D-34:Slope Multiplier Table <br /> � Land Slope% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 11 22 t3 24 25 <br /> Up5lOp2 3:1 3.00 2.91 2.83 2.75 2.66 2,61 2.5-0 2.48 2.42 2.36 2.31 21b 2.21 2.17 2.13 2.09 2.06 2.03 2.OQ 1.97 L95 L93 1.91 1.89 1.81 1.85 <br /> Berm Ratio J:1 d.00 3.85 3.70 3.57 3.A5 3.33 3.23 3.12 3.03 2.9J 2.86 2.78 2.70 2.62 2.55 2.48 2.J1 2.35 2.29 2.23 2.�8 2.13 2.08 2.03 1.98 1.93 <br /> Land Slop�% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 IS 16 17 18 19 20 21 22 23 24 25 <br /> � UOW�SIOPP 3:7 3.00 1.09 3.79 3.30 3.J1 3.53 3.65 3.80 3.55 J.ii J.29 J.JS 4.65 J.95 5.2J 5.55 5.88 61J 6.63 LW 7.J7 7.93 S.�12 8.93 9.J5 ,aea <br /> Berm Ratio 4:1 a•00 4.77 J35 4.SJ J.76 5.00 5.26 5.56 5.88 6Z5 6.67 7.Id 7.69 8.29 8.92 9.57 10.2a 10.94 11.67 12.42 13.19 13.99 1J.82 15.67 76.54 V..W <br /> �. Select Upslope Berm Multiplier <br /> � (based on land stope): 3.33 (figure D-34) <br /> D. Calculate Upslope Berm Width: Mu(tip(ier (4.C)X Ups(ope Mound Height (4.6) = Upslope Berm Width <br /> 3.33 ft X 3.0 ft = 10.0 ft <br /> � E. Calculate Drop in Elevotion Under Bed: Bed Width (2.6) X Land Slope (1.D): 100= Drop (ft) <br /> 10.0 ft X 5.00 % : 100= 0.50 ft <br /> � F. Calculate Downslope Mound Height: Ups(ope Height (4.6) +Drop in Elevation (4.E) = Downslope Height <br /> 3.0 ft + 0.50 ft = 3.5 ft <br /> G Select Downs(ope Berm Mu(tip(ier <br /> (based on land slope): 5.00 (figure D-34) <br /> � H. Calculate Downslope Berm Width:Multip(ier (4.G)X Downslope Height (4.F)=Downslope Berm Width <br /> 5.00 x 3.5 ft = 17.5 ft <br /> � I. Calculate Minimum Berm to Cover Absorption Area: Downslope Absorption Width (3.B or 3.C) +4 ft. = ft <br /> 16.7 ft + � ft = 20.7 ft <br /> ' J. Design Downslope Berm =greater of 4H and 41: 20.7 ft <br /> K. Select Endslope Berm Mu(tip(ier: 4.00 (usually 3.0 or 4.0) <br /> L. Calculate Ends(ope Berm (4.K)X Downs(ope Mound Height (4.F) = Endslope Berm Width <br /> � 4.00 ft X 3.5 ft = 14.0 ft <br /> M. Calculate Mound Width: Ups(ope Berm Width(4.D) + Bed Width (2.B) +Downs(ope Berm Width (4.J)= ft <br /> � 10.0 ft + 10.0 ft + 20.7 ft = 40.7 ft <br /> N. Calculate Mound Length: Endslope Berm Width (4.L) + Bed Length (2.C) +Endslope Berm Width (4.L) = ft <br /> 14.0 ft + 50.0 ft + 14.0 ft = 78.0 ft <br /> � 5. ORGANIC LOADING: (Optional) <br /> A. Organic Loading = Design F(ow X Estimated BOD in mg/L in the effluent X 8.35: 1,000,000 <br /> � �gpd X mg/L X 8.35 : 1,000,000 = �lbs BOD/day <br /> B. Calculate System Organic Loading: (bs. BOD (5.A) =Bed Area (2.A) = lbs/day/ftz <br /> � lbs/day = �ftZ = ��bs/day/ft2 <br /> C. Recommended Organic Loading Rate: �lbs/day/ftz <br /> , <br /> � <br /> � <br />