Laserfiche WebLink
OSTP Mound Design UNIVERSITY <br /> Minnesota Pollution Worksheet OF MII�'NESOTA � ., �`�� <br /> Control Agency -- _ <br /> 1• SYSTEM SIZING: <br /> A. Design F(ow(Design Summary lA): 6�� GPD Tabie I <br /> P.'�OiJN[>Ci�NTOUR LOADlNG RAT[S: <br /> B. Soi(Loading Rate (Design Sum.2D): �.60 GPD/ftZ . _ �o�cour <br /> '•',�a>ur:�j �eeture-dorived <br /> ;-.� Load�ro <br /> r'91:: h:3t•�.� ` ,^.};�iJlld a�JSp`"Flt!tirl!.32iG <br /> C. Depth to limiting Condition: 1.0 ft Rai�:' <br /> D. Percent Land Slope (Desrgn Sum. 28): $.0 9� -^''��,�' �.�. �.3 � �. �.-�.z.� -tz <br /> E. Design Media Loading Rate: 1.2 GPD/ftz �' '�c,,;�� :-� `,.o _�, <br /> F. Mound Absorption Ratio: 2.0 _ ����,,,;,,� ,� �;• F.• <br /> G. Design Contour Loading Rate: 12 GPD/ft <br /> 'Systems with these vatues are not Type I systems. <br /> (From Design Summary 2E-same as Linear Lodding Rate) Contour Loading Rate is a recommended value. <br /> 2. DISPERSA�MEDIA SIZING <br /> A. Calculate Required Dispersol Bed Areo:Design Flow (1.A):Design Media Looding Rote (1.E)=ftz <br /> If a larger dispersal media 600 GPD: 1.2 GPD/ft2 = 500.0 ftZ <br /> area is desired, enter size: �ftZ <br /> B. Calculate Dispersol Bed Width: Contour Loading Rote (1.G):Design Medio Looding Rate (1.E)=Bed Width <br /> 12 ft = 1.2 gpd/ftZ = 10.0 <br /> C. Calculate Disperso(Bed Length: Dispersal Bed Areo (2.A) :Bed Width (2.6)=Bed Length <br /> 500.0 ftZ : 10.0 ft = 50.0 ft <br /> D. Select Dispersa(Media: <br /> 3• ABSORPTION AREA SIZING <br /> Note:Mound setbacks are measured from the Absorption Area. <br /> A. Calculate Absorption Width: Bed Width (2.B)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 /> Calculate Absorption Width 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 /> 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 /> S(ope, CLR Choice,Moteriaf issues <br />