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2011 purple code Mound Design <br />www.SepticResource.com (vers 22.2) <br />Property Owner: Garrett Gronberg <br />Site Address: 65 Stubbs Bay Road S. <br />Comments: Use for the pump <br />Date: 5/10/2022 <br />PID: 3211823340004 <br />instructions: E—� =enter data 0 = adjust if desired 0 = computer calculated - DO NOT CHANGE! <br />1) bedroom Type �I Residential System <br />2) 750 GPD design flow <br />3) No Garbage disposal or pumped to septic <br />4) 15D0 Gal Septic tank (code minimum) 2000 Gal Septic tank (design size / LUG req'd) <br />Tank options: Multiple tanks or compartments req'd <br />s) 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 63 ft. long rockbed <br />6) 9.9 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) 0Laterals 61.0 feet long 21.0 perfs / lateral63 perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />9) 1 /4" inch perfs at feet residual head gives 0.74 gpm flow rate per perforation <br />for this perf size if spacing, £t pipe size on line 12, max perfs/lateral = 25 line #8 must be less -> OK <br />)o) 4.0 doses per day (4 minimum) <br />n) 188 gallons per dose (treatment volume) <br />12) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />13) 145 feet of 2.0 inch supply line leads to L2Egallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 213 gallons TOTAL pump out volume (treatment + drainback) <br />1s) 5 feet vertical lift from pump to mound laterals, leads to a: <br />16) 47 GPM @ 2D feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 750 gal Dose tank (code minimum) 1000 gal Dose tank (design size / LUG req'd) at 25AD gpi <br />Leads to a: I Optional Time dosing of: <br />18) 8.5 inch swing on Demand float, (this delivers Average flow, =70% of Peak design flow) <br />4.5 min ON <br />19)Tinches <br />inches from bottom of tank to "Pump OFF" float 8.5 hrs OFF <br />20) inches from bottom of tank to "Pump ON" float 12 inches to "Timer ON" float <br />21) from bottom of tank to "Hi Level" float 34 inches to "Hi Level" float <br />22) 400 gallons reserve capacity (after High Level Alarm is activated -demand dosed) <br />