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2011purplscode Mound Design <br /> www.SepticResource.com (vers 15.2) <br /> Property Owner: Swanson Homes Date: t/912017 <br /> Site Address: 725 Lakeview Pxkway PID: 0611723340�Q8 <br /> Comments: <br /> instructions: �•enter data �=ad just if desired �� computer calcutated•DO NOT CHANGE! <br /> i� �bedroom Type � Residential System <br /> �i �GPD design flow <br /> a� Yes Garbage disposal or pumped to septic 50%larger tank with multiple comp/tanks <br /> a� 2250 Gal Septic tank(code minimum} 2250 Gal Septic tank(design size/LUG req'd) <br /> Tank options: none <br /> s� 1•2 GPD/ft2 mound sand loading rate contour loading rete of 12 req's a min 62.5 ft.long rockbed <br /> � 10.0 ft rockbed width b3.0 ft rakbed length <br /> �� 3.0 ft laterat spacing 3.0 ft pe�foratlon spacing (maximum of 3 for both) <br /> end feed manifold connection <br /> 8� �taterals 61.0 feet tong 21.0 perfs/laterat 63 perfs total <br /> (1/2 a perf means the first perf starts at the middle feed manifold) <br /> i 7/32 inch perfs at �feet residual head gives 0.56 gpm flow rate per perforation <br /> for this perf size&spacing,&pipe size on line 12,max perfs/lateral= 30 ,line#8 must be less--> OK <br /> io� 4.0 doses per day (4 minimum� <br /> i i i 188 gallons per�se (treatment volume) <br /> 2.00 5x <br /> i'i 2.00 inch diameter laterals mus[be used to meet"4x pipe volume"requirement <br /> 2.Q0 3x <br /> i3i 142 feet of 2.0 inch suppty line leads to 24 gallons of drainback volume <br /> (tip:"top feed"manifold to control the drainback) <br /> w� 212 gallons TOTAL pump oui volume(treatment+drainback) <br /> is� 15 feet verticat lift from pump to mound taterals,teads to a: <br /> i�� 36 GPM @ 26 feet of head, Pump requirement (note:>50gpm may require an extra 3-6'of head <br /> ) <br /> »� 750 gal Dose tank(code minimum) 1300 gal Dose tank(design size/LUG req'd) at 24.�49 gpi <br /> leads to a <br /> �s� 8.7 inch swing on Demand float, or timed dosing of 5.9 min ON (confirm pump rate with drawdown <br /> (this delivers Average flow,=70%of Peak design flow)�9 hrs OFF test and adjust as necessary) <br /> iv� 12 inches from bottom of tank to"Pump OFF'float <br /> -o� 21 inches from bottom of tank to"Pump ON"ftoat,or 12 inches to"Timer ON"ftoat if time dosed <br /> 'i� 24 inches from bottom of tank to"Hi Level"float,or 34 inches to"Hi Levet"float if tlme dosed <br /> ��� 71Z galtons reserve capacity (after High Level Alarm is activated► <br />