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2011 purple code Mound Design <br /> www.SepticResource,com (vers 15.2) <br /> Property Owner: M and M Construction Date: 12/12/2017 <br /> Site Address: 125 Bayside Trail,Orono,MN 55359 PID: 0611723220029 <br /> Comments: NEW CONSTRUCTION <br /> instructions: I =enter data I I =adjust if desired I I = computer calculated - DO NOT CHANGE! <br /> 1) 5 bedroom Type I Residential System <br /> 2) I 750 (GPD design flow <br /> 3) I No 'Garbage disposal or pumped to septic <br /> 4) 2250 Gal Septic tank(code minimum) 2250 Gal Septic tank(design size/ LUG req'd) <br /> Tank options: Multiple tanks or compartments req'd <br /> 5) 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 162.5 Ift. long rockbed <br /> 6) 10.0 ft rockbed width 63.0 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 61.0 feet tong 21.0 perfs / lateral 63 perfs total <br /> (1/2 a perf means the first pert 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 tt spacing, a pipe size on line 12, max perfs/lateral= 30 , line#8 must be less --> OK <br /> to) 5.0 doses per day (4 minimum) <br /> 11) 150 gallons per dose (treatment volume) <br /> 1.50 5x <br /> 12) 2.00 inch diameter laterals must be used to meet"4x pipe volume"requirement <br /> 2.00 3x <br /> 13) 90 feet of 2.0 inch supply line leads to 15 gallons of drainback volume <br /> (Tip: "top feed"manifold to control the drainback) <br /> 14) 165 gallons TOTAL pump out volume(treatment+drainback) <br /> I5) 12 feet vertical lift from pump to mound laterals, leads to a: <br /> 16) 36 GPM @ 21 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 17) 11000 'gal Dose tank(code minimum) 1500 gat Dose tank (design size / LUG req'd) at 36.80 gpi <br /> leads to a <br /> is) I 4.5 'inch swing on Demand float, or timed dosing of 4.6 min ON (confirm pump rate with drawdown <br /> (this delivers Average flow, =70%of Peak design flow) 7.2 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) 764 gallons reserve capacity (after High Level Alarm is activated) <br />