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OSTP Mound Design UNIVERSITY �'�'> <br /> � <br /> Minnesota Pollution Worksheet OF MINNESOTA _�„��� <br /> Control Agency _ <br /> 1• SYSTEM SIZING: <br /> A. Design Flow(Design Summary fA): 375 GPD TaDle i <br /> MOUND CONTOUR LOADING RATES: <br /> B. Soi(Loading Rate (Design Sum.2D): 0.60 GPD/ft2 , contaur <br /> M,eawred Texture-derived <br /> Pnrc Rato oR niound absorption ratio Loading <br /> C. Depth to Limiting Condition: 1.3 ft . �cA: <br /> D. Percent L.and Slope (Design Sum. 26): 12.0 % =So���p� 1 A. 7.3. 2.0.2.J.2.6 c t 2 <br /> E. Design Medio Loading Rate: 1.2 GPD/ft2 61-120 mpi oF 5.0 _�z <br /> F. Mound Absorption Ratio: 2.O - 120 mpi' >s.u• -h� <br /> G. Design Contour Looding Rate: 12 GPD/ft •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 Disperso!Bed Areo:Design F(ow (1.A):Design Medio Loading Rote (1.E)=ftZ <br /> If a targer dispersal media 375 GPD: 1.2 GPD/ft2 = 312.5 ftZ <br /> area is desired, enter size: 320 ftZ <br /> B. Catculate Dispersal Bed Width:Contour Loading Rote (1.G):Design Media Loading Rate (1.E)=Bed�dth <br /> 12 ft :- 1.2 gpd/ftZ = 10.0 <br /> C. Calculate Dispersa!Bed Length: Dispersat Bed Areo (2.A)=Bed Width (2.6)=Bed Length <br /> 320.0 ftZ : 10.0 ft = 32.0 ft <br /> D. Select Dispersn!Media: <br /> 3• ABSORPTION AREA SIZING <br /> Note:Mound setbacks ore 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 Width is measured from the bed equally in both directions. <br /> Catculate Absorption Width Beyond the Bed:Absorption Width (3.A)-Bed Width (2.6)=2= �dth 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 ups(ope edge of the Bed. <br /> Calculate Downslope Absorption Width:Absorption Width (3.A) -Bed Width (2.6)=ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> Comments: <br /> S(ope, CLR Choice,Material issues <br />