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__ OST� Mound Design �=.� .. <br /> MinnesotaPollution � UNIVERSITY � �t� <br /> Work�heet >1 / Slope � ��`��� <br /> Control Agency OF MINNESOTA ,,,°'"���-�..,�,�,,� <br /> 1. SYSTEM SIZING: Project ID: v 06.12.13 <br /> a. �esi�n �tow: I boo �P� TABLE IXa <br /> B. Soil Loading Rate: �.60 GPD/ftZ LOADING RATES FOR DETERMINING BOTTOM ABSORPTION AREA <br /> AND ABSORPTION RATIOS USING PERCOLATION TE1T5 <br /> TrcetmeM LevN C TrcabneM LevN A,A-2,B, <br /> C. Depth to Limiting Condition: I� 1 J ft <br /> Percoladon Rate ��� ���0° <br /> luea Loading Mound Area Loa�ng Nbund <br /> D. Percent Land Slope: 8.0 % �""''> ,wt� ^�°�°^ R,� ��►a+� <br /> ��� e�n° ��� r�s° <br /> E. Design Media Loading Rate: 1.2 GPD/ftZ _ _ <br /> <o., � 1 <br /> F. lubund Absorption Ratio: 2,00 0.,t°5 �.2 + �.s + <br /> 01 ro 5 Qire sand 0.6 2 1 1.6 <br /> Tclble 1 aruf�oa rne sa <br /> MOUNO CONTDUR LOADIIiCa RATES: s to ts o.7e 1.5 1 �.6 <br /> {��r 16 to 30 0.6 2 0.78 2 <br /> Maawred '" Texture-dsrivgc� <br /> Perc Rate �R mound absorption f�tio Loading a�co as o.s 2.4 0.78 2 <br /> �t�: �to� 0.45 2.6 0.6 2.6 � <br /> �bOmpi 1.0, t.3.2.0.2.4.Z.6 �t2 ei to�20 - 5 0.3 5.3 <br /> , >�20 - - - - <br /> 61-12G mpi OR 5.0 jt2 <br /> . 'Systems with these values are not Type I systems. <br /> > uo r�,p;• �s.o• ,6. Contour Loading Rate (linear loading rate)is a <br /> recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A• Catculate Dispersat Bed Area: D@sign Flow:Design Media Loading Rate=ftZ <br /> 600 GPD : 1.2 GPD/ft2 = 500 ft2 <br /> If a larger dispersal media atea is desired, enter size: 630 ft2 <br /> B. Enter Dispersal Bed Width: 10.0 ft Can not exceed 10 feet <br /> C. Calculate Contour Loading Rate:'Bed Width X Design Media Loading Rate <br /> 10 ftZ X 1•� GPD/ftZ = 12.0 gaVft Can not exceed Table 1 <br /> D. Calcutate Minimum Dispersal Bed Length: Dispersal Bed Area :Bed Width = Bed Length <br /> 630 ftz : 10.10 ft = 63.0 ft <br /> 3. ABSORPTION AREA SIZING ' <br /> A. Calculate Absorption Width: Bed Width X Mound Absorption Ratio =Absorption Width <br /> 10.0 ft X 2.Q = 20.0 ft <br /> B. For slopes>1%, the Absorption VNi�ith is measured downhill from the upslope edge of the Bed. <br /> Calculate Downstope Absorption M�/idth:Absorption Width - Bed Width <br /> � 20.0 ft - 10.0 ft = 10.0 ft <br /> 4. DISTRIBUTION MEDIA: ROCK <br /> A. Media Volume:Media Depth X Lemgth X Width <br /> 1.00 ft X 63.0 ft',X 10.0 ft= 630 ft3 : 27 = 23 yd3 <br />