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2011 purple code Mound Design <br /> www SepticResource corn (vers 15.2) <br /> Property Owner: James Larson Date: 8/1/2016 <br /> Site Address: 2775 White Oak Circle PID: 0411723420015 <br /> Comments: <br /> instructions: =enter data = adjust if desired = computer calculated • DO NOT CHANGE! <br /> >> 4 bedroom Type I Residential System <br /> 600 GPD design flow <br /> 3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br /> 4) 2250 Gat 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 rate of 12 req's a min 50 ft. long rockbed <br /> (,) 10.0 ft rockbed width 50.0 ft rockbed length <br /> 7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br /> end feed manifold connection <br /> Si 3 laterals 48.0 feet long 17.0 perfs / lateral 51 perfs total <br /> (1/2 a perf means the first perf starts at the middle feed manifold) <br /> 91 1/4" inch perfs at 1 feet residual head gives 0.74 gpm flow rate per perforation <br /> for this perf size Et spacing, fx pipe size on line 12, max perfs/lateral = 25 , line#8 must be less--> OK <br /> io) 4.0 doses per day (4 minimum) <br /> l l: 150 gallons per dose (treatment volume) <br /> 2.00 5x <br /> 12 2.00 inch diameter laterals must be used to meet"4x pipe volume" requirement <br /> 2.00 3x <br /> 13 113 feet of 2.0 inch supply line leads to 19 gallons of drainback volume <br /> (Tip: "top feed"manifold to control the drainback) <br /> la; 169 gallons TOTAL pump out volume (treatment+ drainback) <br /> 15) 8 feet vertical lift from pump to mound laterals, leads to a: <br /> 16, 38 GPM @ 19 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 171 500 gal Dose tank (code minimum) 1000 gal Dose tank (design size / LUG req'd) at 25.00 gpi <br /> leads to a <br /> i8) 6.8 inch swing on Demand float, or timed dosing of 4.4 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 /> 19) 12 inches from bottom of tank to"Pump OFF"float <br /> 20) 19 inches from bottom of tank to"Pump ON"float, or 12 inches to"Timer ON"float if time dosed <br /> 2! 22 inches from bottom of tank to"Hi Level"float, or 32 inches to"Hi Level"float if time dosed <br /> 22 450 gallons reserve capacity (after High Levet Alarm is activated) <br />