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• `` C}STP Mound Design � <br /> � : <br /> UNIVERSiTY <br /> Mlnnesota Pollution � - <br /> Controf Agency <br /> Worksheet > 1 / Slope OF IVIINNESOTA `.:-'-�:.�� <br /> 1. SYSTEM SIZING: Project ID: v 05.13.14 <br /> A. Design Flow: 600 GPD TABL� IXa <br /> Z �LOAO�RATES FOR DEtERMiNING 807TOM A[350R?TION AREI4 <br /> B. Soit Loading Rate: 0.78 GPD/ft � AN4 ABSORPTION RAT105 USiNt3 PERLOtJ1TtON 7'ESTS <br /> C. Depth to Limiting Condition: 2.0 ft ; 7i�'�`��"`�� �"°'���,�-2,a, <br /> j PeraoiNion.R�te ��� Ab�md ..� Fbuad : <br /> D. Percent Land Slope: 15.0 � � �""�'� 'wc� "'"°'�'O" w�ee "�'p1�"P"' <br /> ; ts�ar�'f ""n° t�') "'e�° <br /> E. Design Media Loading Rate: 1.2 GPD/ft2 �, _ , _ y <br /> F. Mound Absorption Ratio: 2.00 iQ�to� ��� ' �'° � <br /> 0�to 5(t�re santl 0.8 2 1 1.6 <br /> � � � � TO�E.�� � . . � -�ancf foa fine santl <br /> MOili'iD GONTI?UR LOAWNG RATES: e ro�5 0.78 1.b � 1.6 <br /> ���r t8 ro 30 O.fi 2 0.78 2 <br /> tiwasur40 ' Ta+cwrc=dcrivad ��m a,�Q.� o.a i.a oae 2 <br /> Pac Ratv '� rnound absorption rat Rata•� <br /> . ax to Bo 0.�5 2.6 0.6 2.b <br /> �6pmpi 1.0. t.3, 2 0.2.4„2.6 e t2 !Fi�c tzo - 6 o.s 6.� <br /> "�p • _ _ . <br /> 6�-�zo mpt aR 5.0 =�Z "Systems with these values are not Type I systems. <br /> � i2o n,Pi• �s.o• _6• Contour Loading Rate (tinear toading rate)is a <br /> recommended vatue. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calcutate Dispersat Bed Area: Design Flow�Qesign Media Loading Rate=ft2 <br /> b00 GPO t 1.2 GPD/ft2 = 500 ftZ <br /> If a larger dispersal media area is desired, enter size:�ftZ <br /> B. Enter Dispersal Bed Width: 10.0 ft Cnn not exceed 10 feet <br /> G Calculate Contour Loading Rate: Bed Width X Design Media Loading Rate <br /> 10 ft2 X 1•2 GPD/ft2 = 12.0 �aUft Can not exceed Table i <br /> D. Catculate Minimum Dispersal Bed Length: Dispersal Bed Area =Bed Width =Bed Length <br /> 500 ft2 = 10•Q ft = 50.0 ft <br /> 3. ABSORPTIQN AREA SIZING <br /> A. Calculate Absorption Width: Bed Width X A+�und Absorption Ratio =Absorption Width <br /> 10.0 ft X 2.0 = 20.0 ft <br /> B. For slopes>1%, the Absorption Width is measured downhitt from the upstflpe edge of ihe Bed. <br /> Catculate Downslope Absorption Width: Absorption Width - Bed Width <br /> 20.0 ft - 10.0 ft = 10.0 ft <br /> 4. DISTRIBUTION MEDIA: ROCK <br /> A. Media Votume: Media Depth X Length X Width <br /> 1.00 ft X 50.0 ft X 10.0 ft= 500 ft' � 27 = 19 yd3 <br />