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OSTP Mound Design � - � <br /> - UNIVERSITY - ` � <br /> Minnesota Poltution �yorksheet � � /O S�Q e OF MINNESOTA t� ��` �� "-;;;� <br /> Control Agenty p U.�� <br /> 1. SYSTEM SIZING: Project ID: v 06.12.13 <br /> a. Design Ftow: 750 �P� TABLE IXa <br /> B. Soit Loading Rate: 0.45 GPD/ft2 �OADING RATES FOR DETERMINING 80TTOM ABSORPTION AREA <br /> ANO ABSORPTION RATtpS USMG pERCOLATION TESTS <br /> Trcatme�rt�LevN C. .Sreatme�u-Levet A,�A-2,8, <br /> C. Depth to Limiting Condition: 1 J ft �u <br /> AbsorPtion Absorption <br /> PercobCon Rate p�p�d � MouM <br /> D. Percent Land Stope: 15.0 % � p���g �,�� <br /> (�) ADsorptbn Abwrption <br /> (+�k=) Ratio 49�R1) Ratio <br /> E. Design Media l.Aading Rate: 1.2 GPD/ft2 _ <br /> cO t � � <br /> F. Mound Abwrption Ratio: 2.60 °''°' 1-z � +-s � <br /> 0*oo b{Fice sa-O 0_6 2 � �.6 <br /> Table i ana toamv hr�e�;ttq <br /> 1hOUtaQ CONTOUR Lt7�QlNG RATES: 6�O'S �•�$ �� � 1.6 <br /> taea�rfld ' iexture-derivQd <br /> Contour �c tc`° 0.6 2 o.�s 2 <br /> Par�Rats �R aiound abscrpcon ra:fo �o3��ng 3,to as o.s 2.a o.�s z <br /> . Rate: as�o ca o.as 2s o.s 2e <br /> -50a�p: t.�. t 3.2.D.Z.1.2.6 s 12 61 m�20 . 5 0.3 6_3 <br /> . >t� - - - - <br /> h�-�tc n,p; oe s.c _,2 <br /> . "Systems with these values are not Type I systems. <br /> : �zo;��p;� �s.o• _6• Contour Loading Rate(linear toading rate)is a <br /> recommended value. <br /> 2. DiSPEFtSAI MEDIA SiZfNG <br /> A. Catcutate Dispersat Bed Area: Design Flow=Design Media Loading Rate=ftZ <br /> 750 GPD = 1.2 GPDlftz = b�S ft2 <br /> If a larger dispersal media area is desired, enter size: 630 {�z <br /> B. Enter Dispersat Bed Width: 10.0 ft Can not exceed 10 feet <br /> C. Catculate Contour Loading Rate:Bed Width X Design Media Loading Rate <br /> 10 ft2 X 1•2 GPD/ft� = 12.0 �allft Cnn not exceed Table 1 <br /> D. Catculate Minimum Dispersat Bed Length: Dispenat Bed Area =Bed Width =Bed Length <br /> 63U ft2 = 10.0 ft = 63.0 ft <br /> 3. ABSORPTiON AREA SIZING <br /> A. Catcu(ate 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 meawred downhitt from the upstope edge of the Bed. <br /> Calcutate Downstope Absorption Width:Absorption Width - Bed Width <br /> 26.0 ft - 10.0 ft = 16.0 ft <br /> . DISTRIBUTION MEDIA: ROCK <br /> A. Media Volume:Media Depth X Length X Width <br /> 1.00 ft X 63.0 ft X 10.0 ft� 630 ft3 = 27 = �yds <br />