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� � OSTP Mound Design <br /> UNIVERSITY -- <br /> Minnesota Pollution �/orksheet > 1 % Stope OF MINNESOTA -�; <br /> Control Agency %'�.,`�ao,' <br /> 1. SYSTEM SIZING: <br /> A. Design F(ow(F(ow£t Soi! - 1.A) : 450 GPD Tabie I <br /> 650UND CONTOUR LOADING RATES: <br /> B. Soi(Loading Rote(F(ow&Soi(-3.C): 0.50 GPD/ftz N;easured ' Texture-derived contour <br /> Pgrc Ra[� aR mound absorption ratio Loading <br /> C. Depth to Limiting Condition: 1.3 ft , Rats: <br /> D. Percent Land S(ope: 9,Q % �60mpi 7.0, 1.3. 2.0, 2.-1, 2.6 -iZ <br /> E. Design Media loading Rate: 1.2 GPD/ftZ 6t-120 mpi oR s.o <�z <br /> F. Mound Absorption Ratio(1.E:1.B): 2.40 _ �2o mpi' :5.0� <6• <br /> G. Design Contour Loading Rate: 12.0 GPD/ft -Systems with these values are not Type I systems. <br /> (From Table I -same as Linear Loading Rate) Contour Loading Rate is a recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calculate Required Dispersa(Bed Area: Design F(ow (1.A) :Design Media Loading Rate (1.E) =ftZ <br /> If a larger dispersal media 450 GPD: 1.20 GPD/ftZ = 375.0 ft2 <br /> area is desired, enter size: 380 ftz <br /> B. Calculate Disperso(Bed Width: Contour Loading Rote (1.G) :Design Media Looding Rate (1.E) =Bed Width <br /> 12.0 ft : 1.2 �pd/ftz = 10.0 ft <br /> C. Calculate Dispersal Bed Length: Dispersa(Bed Area (2.A) :Bed Width (2.6) =Bed Length <br /> 380.0 ft2 : 10.0 ft = 38.0 ft <br /> D. Select Dispersa!Media: ❑RoCk <br /> ❑Other Approved Media � <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 2.4 = 24.0 ft <br /> B. For slopes >1%, the Absorption Width is measured downhilt from the upslope edge of the Bed. <br /> Calculate Downslope Absorption Width: Absorption Width (3.A) - Bed Width (2.B) =ft <br /> 24.0 ft - 10.0 ft = 14.0 ft <br /> Comments: <br /> S(ope, CLR Choice, Moteria( issues <br />