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4STP Qesign Summary Worksheet L��,�� �F���I r} <br /> ?.'.innc-;<,t,i Poliution i,,}= ��1::�r E5�_!�i.�j <br /> Co�•tro!�^,qa��cy <br /> At-Grade Design Summary <br /> Absorption Bed WidthC—�ft Absorption Bed�ength�_�ft System Height�ft <br /> Absorption Bed AreaC�ftz Upstope Serm width�—�ft Downslope Berm Width�ft <br /> Endslope Bertn width�ft Sysiem Length�it System�Nidth�ft <br /> Leve(Pressure Distribution Summary <br /> No. of Perforated LateratsC3 � Perforation Spat9ng��ft Perfaration Diameter 114 in <br /> Laterat Diameter 1.50 �n Supply Pipe Diameter 2.00 in Minimum Dose Volume���al <br /> Flow Rate 25.0 GPM Tota!Head 25 ft Maximum Dose Votume 187.5 �al <br /> 5. Additional Info for Type iVlPretreatment Design <br /> A. Calcutate the orqanic(oading usinq option f or Z <br /> 1. Organic Loading =Founds of 80D X Uniis <br /> �_�ibs/day X �—� = C�tbs BOD/day <br /> 2, Organic Laadinq te Pretreotment Unit =Design Ftow X Estima[ed 80D in mg/L in the effluent X 8.35=1,000,000 <br /> �gpd X �—�mg;L X 8.35=t,D40,Ofl0= �lbs BOD/day <br /> 6. Type of Pretreatmer+t Unit Being Instatted: <br /> C. Calculate Soi(Treotment Sysfem Organic loading: lbs. BOD/day:Bottom Areo =tbsldaylftZ <br /> �lbs/day> ��ft2= �lbsidaylftZ <br /> Comments/Speciat Design Considerations: <br /> Mound is sized for a 5 bedroom{75flgpd)one bedroom bigger than actuat bedrooms in home. Mound must be sptit into hatf on account <br /> of short contour. Each half to be i0 x 32'tc have the same amount of lateral len�th. Downstope sand bed is 16 feet. There are 15 <br /> inches of differer.ce in etevation between the two rockbeds. Uneven etevation accounted for with dual pump,time dose arrangement in <br /> the pump station. Foitowing Mound desig�is per individua!half unit, (375gpd each}denoting exact dimensions, hoEe sizing,spacing and <br /> number. EaCh unit is identical in atl respects except for stope and overatt footprint size. Slope is 8;�for one unit and 13%for the other. <br /> i hereby certify that i have compteted this work in accordance w(th atl applicable ordinances, rules and laws. <br /> Date Denn 583 C9/22/14 <br /> (Designerj (Sig�ature) ttitanse�) (Date? <br />