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, �, <br /> � � � OSTP Mound Design UNIVERS <br /> ITY <br /> Min�esotaPollution �yorksheet > 1 % Stope OF MINNESOTA � -a .,,, <br /> Control Agency �, <br /> 1. SYSTEM SIZING: Project ID: v 07.14.15 <br /> a. Design Flow: �5o GPD TABLE IXa <br /> B. Soil Loading Rate: 0.45 GPD/ft2 �OADING RATES FOR OEiERMINING BOTI'OM ABSORPTION AREA <br /> AND ABSORPTION RATI05 USING PERCOLATION TE5T5 <br /> �traRmeM Leve1 c 7reaaneM Leve�A,a-2,B, <br /> C. Depth to Limiting Condition: 1.2 ft <br /> Peraoletlon Rate �� NbwW �O� MpWW <br /> Mea Loadin� Arra LoaAn� <br /> D. Percent Land Slope: 10.0 % �'"°'� � � � � <br /> tw�) �O ca,�') R'b° <br /> E. Design Media Loading Rate: 1.2 GPD/ft2 _ _ <br /> �o, � � <br /> F. Mound Absorption Ratio: 2.60 0„°s �.z � �.a � <br /> 0 t to 5(fine send 0.6 2 1 1.6 <br /> TaWe 1 a�w ron f�re sa <br /> A10lMJD C011T8Uit lOADMIG RATES: 6 to 15 o.�s �.s � �.s <br /> C� 16 to 30 0.6 2 0.78 2 <br /> AW7�StM'nd � TaoCCUro-dOf1YY/ ��� 3i w 45 0.6 2A 0.78 2 <br /> PprC Rit� � f110�N1d�SQf�[IOfF <br /> ' �'�: 48 to 80 0.46 2.8 0.8 28 <br /> s bOmpi 1.0, t.3.2.0.2.�,2.6 _12 6�m�20 . 5 O.s b.3 <br /> . >�20 - - - - <br /> b1•120 mpi dR 5.0 _12 <br /> . "Systems with these values are not Type I systems. <br /> _�Zo,�;• ;5 0. _6. Contour Loading Rate (linear loading rate)is a <br /> recommended value. <br /> 2. DISPERSAL MEDIA SIZING <br /> A. Calculate Dispersal Bed Area: Design Flow: Design Media Loading Rate=ftZ <br /> 750 GPD = 1.2 GPD/ft2 = 625 ftZ <br /> If a larger dispersal media area is desired, enter size: 630 ftZ <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 ft2 X 1•Z GPD/ftZ = 12.0 gal/ft Can not exceed Ta6le 1 <br /> D. Catcutate Minimum Dispersal Bed Length: Dispersal Bed Area = Bed Width = Bed Length <br /> 630 ft2 ; 10.0 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 2.6 = 26.0 ft <br /> B. For slopes>1%, the Absorption Width is measured downhill from the upslope edge of the Bed. <br /> Calculate Downslope Absorption Width: Absorption Width - Bed Width <br /> 26.0 ft - 10.0 ft = 16.0 ft <br /> 4. DISTRIBUTION MEDIA: ROGK <br /> A. Media Volume: Media Depth X Length X Width <br /> 0.50 ft X 63.0 ft X 10.0 ft= 315 ft3 = 27 = 12 yd3 <br />