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2011 purple code Mound Design <br /> www.SepticResource.com (vers 14.2) <br /> Property Owner: Jerald Krepps Date: 6/18/2015 <br /> Site Address: 20 Wear Lane, Orono, MN 55356 PID: <br /> Comments: <br /> instructions: =enter data =adjust if desired = computer calculated - DO NOT CHANGE! <br /> 1) 4 bedroom Type I Residential System <br /> 2) 600 GPD design flow <br /> 3) Yes Garbage disposal or pumped to septic 50%larger tank with multiple comp/tanks <br /> 4) 2500 Gal Septic tank(code minimum) 2250 Gal Septic tank(design size / LUG req'd) <br /> Tank options: none <br /> 5) 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 50 ft. long rockbed <br /> 6) 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 /> 8) 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 /> 9) 7/32 inch perfs at 1 feet residual head gives 0.56 gpm flow rate per perforation <br /> for this perf size&spacing, a pipe size on line 12, max perfs/lateral= 30 , line#8 must be less--> OK <br /> 10) 4.0 doses per day (4 minimum) <br /> 11) 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) 95 feet of 2.0 inch supply line leads to 16 gallons of drainback volume <br /> (Tip: "top feed" manifold to control the drainback) <br /> 14) 166 gallons TOTAL pump out volume (treatment +drainback) <br /> 15) 15 feet vertical lift from pump to dispersal area, leads to a: <br /> 16) 29 GPM® 23 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 17) 1000 gal Dose tank (code minimum) 1000 gal Dose tank(design size / LUG req'd) at 34.00 gpi <br /> leads to a <br /> 18) 4.9 inch swing on Demand float, or timed dosing of 5.7 min ON (confirm pump rate with drawdown <br /> (to deliver Average flow, 66%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) 17 inches from bottom of tank to"Pump ON"float, or 12 inches to 'Timer ON"float if time dosed <br /> 21) 20 inches from bottom of tank to "Hi Level"float, or 30 inches to"Hi Level"float if time dosed <br /> 22) 320 gallons reserve capacity (after High Level Alarm is activated) <br />