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OSTP Mound Desi n ? - <br /> - � UNIVERSITY ` <br /> Minnesota Pollution OF MINNESOTA , .�.��� <br /> Control Agency Worksheet _ _ <br /> 1. SYSTEM SIZING• <br /> A. Design Flow(Design Summary tA): 375 GPD Table I <br /> t�10UND CONTUUR LOADING RATES: <br /> B. Soi(Loading Rate (Design Sum.2D): 0.6� GPD/ft2 tr.eawrad ' Taztura-derivQd ��tour <br /> pnrc.Rate �R n�oi�nd absorption ratio Loading <br /> C. Depth to Limiting Condition: 1.7 ft . �ta: <br /> D. Percent Land S(ope (Design Sum.2B): 12.0 % =huma; i.o. i.3.z.o. z..�. z.s �iz <br /> E. Design Media Looding Rate: 1.2 GPDIft2 67-12G mpi oF s.o _iz <br /> F. Mound Absorption Ratio: 2.0 - �?o n,�;� >s.o• :a� <br /> G. Design Contour Looding Rate: 12 GPD/ft <br /> 'Systems with these values are not Type I systems. <br /> (From Design Summary 2E-same as Linear Loading Rate) Contour Loading Rate is a recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calculate Required Dispersal Bed Area:Design Flow (1.A)=Design Media Loading Rnte (1_E)=ft2 <br /> If a larger dispersal media 375 GPD= 1.2 GPDlftZ = 312.5 ftZ <br /> area is desired,enter size: 320 ftZ <br /> B. Calculate Dispersa!8ed Width:Contour Loading Rate (1.G):Design Media Looding Rate (1.E)=Bed Width <br /> 12 ft : 1.2 gpd/ftZ = 10.0 <br /> C. Calculate Dispersal Bed Length: Dispersa(Bed Areo (2.A):Bed Width (2.6)=Bed Length <br /> 320.0 ftZ : 10.0 ft = 32.0 ft <br /> D. Select Dispersal Medio: � <br /> 3. ABSORPTION AREA SIZING <br /> Note:Mound setbacks are measured 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 2.00 = 20.0 ft <br /> B. For slopes from 0 to 1%, the Absorption�dth is measured from the bed equalty in both directions. <br /> Calcutate Absorption�dth Beyond the Bed:Absorption Width (3.A)-Bed Width (2.6)-2= Width beyond Bed <br /> � N/A ft - N/A ft) : N/A = N/A ft <br /> C. For slopes>1%,the Absorption Width is measured downhill from the upslope edge of the Bed. <br /> Calculate Downslope Absorption Width:Absorption Width (3.A) -Bed Width (2.B)=ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> Comments: <br /> 5(ope, CLR Choice,Material issues <br />