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2011 purplecoce Mound Design <br /> www.SepticResource.com (vers 15.2) <br /> Property Owner: NOR-SON Date: 5/5/2017 <br /> Site Address: 500 Willow Drive S PID: 0311723320017 <br /> Comments: 5 Bedroom house and one bedroom guest house <br /> Inst:unions: IT =enter data =adjust if desired <br /> = computer calculated - DO NOT CHANGE; <br /> '- ! 6 ilbedroom Type I Residential <br /> System <br /> 900 !GPD design flow <br /> Yes (Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br /> J 3000 JGai Septic tank (code minimum) 3000 Gal Septic tank (design size / LUG req'd) <br /> Tank options: none <br /> ( 1.7 ;GPD/ft' mound sand loading rate contour loading rate of =req's a min 75 ft. tong rockbed <br /> ! 1O.0 !ft rockbed width 175.0 ft rockbed length <br /> I 3.O-,ft lateral spacing3.0 ft perforation spacing (maximum of 3 for both) <br /> end feed manifold connection <br /> s (laterals 73.0 ifeet long 25.0 perfs / lateral <br /> 75 perts total <br /> (1/2 a pert means the first pert starts at the middle feed manifold) <br /> 7/32 inch perfs at feet residual head gives O.Sb gpm flow rate per perforation <br /> `or th:;s perf size Et spacing, 8 pipe size on tine 12, max perfs/latera( = 30 , line#8 must be less > <br /> 4.0 1doses per day ( 4 minimum) <br /> r <br /> 225 {gallons per dose (treatment volume) <br /> 2.CC inch diameter laterals must be used to meet'Ax pipe volume" requirement 2.00 Sx <br /> feet of 2.0 inch supply line leads to =gallons of drainback volume 2.00 3x <br /> i 229 }gallons TOTAL pump out volume (treatment* drainback) (Tip: "top feed"manifold to control the drainback) <br /> 9 ;feet vertical lift from pump to mound laterals, leads to a: <br /> 42 GPM lz feet of head, Pump requirement (note: >50gpm may require an extra <br /> 3 b of head) <br /> 900 1gai Dose tank (code minimum) 1500 gal Dose tank (design size / LUG req'd <br /> ^reads to a ) at29.4; 1g„ <br /> S; 7.8 hrlch swing on Demand float, or timed dosing of 5.5 min ON <br /> (confirm pump rate with drawdown <br /> (this delivers Average flow, =70%of Peak design flow) 9 hrs OFF11 test and adjust as necessary)IL-1 J <br /> from bottom of tank to"Pump OFF"float <br /> 1 20 linches from bottom of tank to"Pump ON"float, or I 12 inches to'Timer ON"float if time dosed <br /> 23 inches from bottom of tank to"Hi Level"float, or 33 inches to"Hi Level"float if time dosed <br /> -- I 82 gallons reserve capacity�J p y (after High Level Alarm is activated) <br />