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� VIIIYeRSITY OF�41YNEtOfA � �, , . <br /> h � � <br /> Mound Des� n Worksheet 4� ���t ax �' � <br /> Minnesota Pollution � � <br /> Control Agency _ .�_.... . .. ._ . ��`�,: <br /> 1. SY57EM SIZING: <br /> A. Design Flow(Flow&Soil- 1.A) : r��GPD Tab�e 1 <br /> B. Soil l.oading Rate(Flow Ft Soil-3.C): 0.60 GPD/ft2 �UND CQNTOUR LQADING RATES: <br /> Meawr�d . Texture-derived Contour <br /> C. Depth to Limitinq Condition: 4.5 ft p��� OR mamd abw�ption rati Loadin� <br /> Rnt�►: <br /> D. Percent Lund Slope: $.0 % <br /> �60mpi 1.0, 1.3,2.0.2.4,2.6 --+ <12 <br /> E. Design Mediu Loadin�Rate: 1.2 �- <br /> 61-120 mpi OR 5.0 a s6 <br /> F. Mound Absorptfon Rotio(1.Ea1.6): 2.00 -� <br /> e 120 mpi -+ - <br /> G. Design tor►tour LoQding Rate: 12.0 GPD/ft <br /> (From Table I -same�Linear Loading Rate) <br /> 2. =DiSPERSAL'MEDIA SIZING <br /> A. Catculate Required Dispenat Bed Area:Design Flow (1.A)=Design Media Loading Rate (1.E)ffi ftZ <br /> b00 - GPD= 1.20 GPD/ftZ = 500.0 ftZ <br /> If a larger dispersat media <br /> area is desired,enter size: �-�ftZ <br /> B. Calculate Dispe►sal Bed IMdth:Contour Loading Rate (1.G)+Design Media Loodinq Rate (1.E)=Bed Width <br /> 12.Q ft + 1.2 gpd/ft� _ 'l0.0 ft <br /> C. Cakulate Dispersal Bed length: Dfspersal Bed Area (2.A) -r Bed IMdth (2.6)a Bed Length <br /> 500.0 ft2 a 10.0 ft = 50.0 ft <br /> D. Select Dispersa!Media: �ROCk <br /> ❑Other Approved Media <br /> 3. ABSORPTION AREA SIZING <br /> Note:Mound setbacks ore meawred from the Absorption Areo. <br /> A. Calculate Absorption�dth:Bed�dth (Z.B)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 equatly in both directions. <br /> Ca�ulate Absorption Width Beyond the Bed:A6sorption IMrdth (3.A)-Bed IMfdih (2.6)+2= Vl�idth beyond Bed <br /> (��ft - �ft) +� = ft <br /> C. For stopes>1%, the Absorption Width is measured downhill from the upslope edge of the Bed. <br /> Calculate Downslope Absorption�dth:Absorption Wfdth (3.A) -Bed N�idth (2.6)=ft <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> Comments: <br />