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OSTP Mound Design Worksheet uNI�ERSITY <br /> Minnesota Poliution �1�/ Slope OF MINNESOTA `\�'-'',.,..��. <br /> Control Agency ��� 09 22 <br /> 1. SYSTEM SIZING: Project ID: <br /> A. Design Flow(Flow&Soil- 1.A) : 300 GPD TABLE IXa <br /> B. Soil Loading Rate(Flow&Soil-3.C): 0.45 GPD/ftZ LOADING RATES FOR DETERMINING BOTTOM ABSORPTION AREA <br /> AND ABSORPTION RATIOS USING PERCOLATION TESTS <br /> C. Depth to Limiting Condition: 2.� ft Treatment�evel c Treatment Level A,A-2,B, <br /> � Abw tion Mourld <br /> D. Percent Land 5(ope• % Percoladon Rate Absorption �und �D <br /> �4.� Area Loading Area Loading <br /> ���� Rate Absorption Rate ����� <br /> E. Design Media Loading Rate: 1.2 GPD/ftZ (9Dd/ft�) Ra� �°,�a�rc�� Rado <br /> F. Mound Absorption Raho(Table IXa): 2•60 `0' � <br /> � � <br /> 12.0 GPD/ft o i�o s �.z > >.s � <br /> G. Design Contour Loading Rate: o i io s�r�5a� o.s z � �s <br /> and loa fine sand <br /> Table�I �.6 <br /> G ro i5 078 1.5 1 <br /> h�t�UNU i_OtaTUUR LU�ZUING('v+iLti�. <br /> �orto�.ii �6 to 30 0.6 2 OJ8 2 <br /> �,tea;ar..+d ' .�eturu �deii�.-ud �oadit�c 3�to45 0.5 2.4 0.78 2 <br /> ...�.r_..t., '�F ,.u.�und .�ript��or,i.-�U�.> K:�:�: <br /> a6 to 60 0.45 2.6 0.6 2.6 <br /> =-f,���.:���•.,., i.C. .... .. :..i i _�.. 5�ro1�p . 5 0.3 5.3 <br /> � -it >1�0 - ' _ <br /> �:I�f.. , ..F ..., .. <br /> _. , , 'Systems with these values are not Type I systems. Contour Loading Rate(linear <br /> loading rate)is a rxommended value. <br /> 2, DISPERSAL MEDIA SIZING <br /> A. Calculate Required Dispersal Bed Area:Design Fiow (1.A)=Design Media Loading Rate (1.E)=ftZ <br /> If a larger dispersal media area <br /> 300 GPD T 1.20 GPD/ftZ = 250 ft� <br /> is desired,enter size: 255 ftZ <br /> B. Calculate Disperwl Bed Width:Contour Loading Rate (1.G) =Design Media Loading Rate (1.E)=Bed Width <br /> 12.0 ft + 1.2 gpd/ft2 = 10 ft � <br /> C. Calculate Disperwl Bed Length: Dispersal Bed Areo (2.A):Bed Width (2.6)=Bed Length <br /> 255 ftZ + 10 ft = 26 ft <br /> D. Select Dispersal Media: ROCk <br /> E. If using a registered produd,enter the Component Length: <br /> �in i 12 = ��ft <br /> F. If using a registered product,enter the Component Width: <br /> �in� 12 = ��ft <br /> G. Number of Components per Row =Bed Length (2.C)divided by Component Length (4.J) (Round up) <br /> �� ft � � ft= �components/row <br /> Note:CLR of 10.3 <br /> H. Number of Rows =Bed Width (2.B)divided by Component Width (4.K) (Round up) ga��ft rewlts in 9 foot <br /> Adjust Contour Loading Rate on Design Summary page until this number is a whole number �de bed. <br /> �� ft� C� ft= �� rows <br /> �, Tota(Number of Components =Number of Components per Row X Number of Rows <br /> �� X (--� �]components <br /> L_----� <br />