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UNivrxsm�uF M��uEsirrn <br /> Minnesota Pollution Mound Design Worksheet � _, <br /> Control Agency �r"�``'��'' <br /> 1• SYSTEM SIZING: <br /> A. Desiqn Flow(F(ow&Soi( - 1.A) : 450 GPD Table I <br /> �.tiuur+�cura�uuR�oa�ir���,zEs: <br /> B. Soi(Loading RQte(F(ow£t Soi!-3.C): 0.60 GPD/ft2 �fgas»re� ' Tezturo-deiivad �ontour <br /> Pert Rata �R r��ou;�d absarption ratiu Loadir,�, <br /> C. Depth to Limiting Condition: 2.0 ft . �zata: <br /> D. Percent Lond Slope: 12.0 % s r,on,o; �.o, �.a,z.o.�.a.�.6 <_�2 <br /> E. Design Medio Loading Rate: 1.2 GPD/ftZ 51-12G mpi eR s.c <_�2 <br /> F. Mound Absorption Ratio(1.E:1.B): 2.00 - �za rn�:� :�.�• <s• <br /> G. Design Contour Looding Rate: 12.0 GPD/ft -Systems with these values are not Type I systems. <br /> (From Table 1 -same as Linear Loading Rate) Contour Loading Rate is a rec�nmended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calculate Required Disperso!Bed Area:Design Flow (1.A} :Design Media Loading Rate (1.E) =ftZ <br /> 450 GPD= 1.20 GPD/ftZ = 375.0 ftZ <br /> If a larger dispersal media <br /> area is desired, enter size: 380.0 ft2 <br /> B. Calculate Dispersal Bed Width: Contour Loading Rate (1.G) :Design Media�oading Rate (1.E) =Bed Width <br /> 12.0 ft : 1.2 gpd/ftz = 10.0 ft <br /> C. Calculate Dispersa(Bed Length: Dispersal Bed Area (2.A) :Bed Width (2.B) =Bed Length <br /> 380.0 ftz : 10.0 ft = 38.0 ft <br /> D. Select Dispersa!Media: ❑RoCk <br /> ❑Other Approved Media <br /> 3• ABSORPTION AREA SIZING <br /> Note:Mound setbocks are meosured from the Absorption Area. <br /> A. Calculate Absorption Width:Bed Width (2.6)X Mound Absorption Ratio (1.F) =Absorption Width <br /> 10.0 ft X 2.0 = 20.0 ft <br /> B. For slopes from 0 to 1%, the Absorption Width is measured from the bed equalty in both directions. <br /> Calculate Absorption Width Beyond the Bed: Absorption Width (3.A) - Bed Width (2.6) =2= Width beyond Bed <br /> (�ft - �ft) -� = ft <br /> C. For slopes>1%, the Absorption Width is measured downhill from the upstope edge of the Bed. <br /> Catculate Downs(ope Absorption Width: Absorption Width (3.A) - Bed Width (2.6) =ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> Comments: <br /> Slope, CLR Choice, Moteria! issues <br />