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� �� OSTP Mound Des� n <br /> . <br /> � `� � � UNIVERSITY '�° <br /> Minnesota P�ilution O <br /> ControlAgency Worksheet > 1 / Slope OFMINNESOTA ,��� <br /> 1. SYSTEM SIZING: Project ID: v 07.14.15 <br /> a. Design Flow: 750 GPD TABLE IXa <br /> B. Soit Loading Rate: 0.45 GPD/ftZ �OADING RATES FOR DETERMINING BpTTOM ABSORPTION AREA <br /> ANO ADSORPTION RATIOS USING PERCOLATlON TESTS <br /> TnatmeM level C TreaR�m�M Lewl A,A-2,8, <br /> C. Depth to Limiting Condition: t.3 ft ! <br /> ,' Paraolatim wte A°'°`ptf°" �d Abmrytf°" Mouna <br /> Na Lo+di�� Arc�t.wde� <br /> D. Percent Land Slope: 18.0 % ' �"A°'> �,� �v�«+ ,,,u ��� <br /> i <br /> t�'� e'�° ��rt'� a.�° <br /> E. Design Media Loading Rate: 1.2 GPO/ft� <br /> ��� � � <br /> F. Mound Absorption Ratio: 2.60 0,ros �.2 � �.e � <br /> 0 t to 5(6ne sarw 0.B 2 1 1.8 <br /> TaDle 1 ana ua tine cand•� <br /> MI�UNU CONTOUR LOADING RATES: 6 to's o.�s �.s � te <br /> µwwraG ' Toxturo-dai�wd <br /> tonta,r '6 to 3° o.s 2 o.7a 2 <br /> Porc Rato � nwixid absorption rat ���^B 3�to�5 0.6 2.4 0.78 2 <br /> . Rdio: 46 to 60 0.45 2.6 0.! 4.6 <br /> =bOmp� t.G. 1 3 2 0. 2.�t. 2.6 _12 61 tO�� - 6 0.9 6.3 <br /> , �t20 . . , . <br /> b 1�t 2Q mpi UR 5.0 :12 <br /> . `Systems with these vatues are not Type I systems. <br /> : 120 mpi' .5_p� _5. Contour Loading Rate (linear loading rate) is a <br /> recommended vatue. <br /> 2. DISPERSAL MEDIA SIZING <br /> A• Calcutate Dispersal Bed Area: Design Ftow : Design Media Loading Rate = ftZ <br /> 750 GPD = 1.2 GPD/ft� = 625 ft2 <br /> If a targer dispersal media area is desired, enter size: 630 fiz <br /> B. Enter Dispersal Bed Width: 10.0 ft Can not exceed 10 feet <br /> C. Catcutate Contour Loading Rate: Bed Width X Design Media Loading Rate <br /> �0 ft� X 1•2 GPD/ft2 = 12.0 gat/ft Can not exceed Tob(e 1 <br /> D. Catculate Minimum Dispersal Bed Length: Dispersal Bed Area : Bed Width = Bed Length <br /> 630 ftz : 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 downhitt from the upslope edge of the Bed. <br /> Calculate Downstope Absorption Width: Absorption Width - Bed Width <br /> 26.0 ft - 10.0 fi = 16.0 ft <br /> 4. DISTRIBUTION MEDIA: ROCK <br /> A. Media Votume: Media Depth X Length X Width <br /> 0.50 ft X 63.0 ft X 10.0 ft = 315 ft' = 27 = 12 yd3 <br />