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2011 purple code Mound Design <br />Property Owner: Robert Carlson <br />Site Address: 4465 Bayside Rd., Orono <br />Comments: Tanks are sized for a 5 bedroom home <br />Date: 9/11/2018 <br />PID: <br />:tions: O = enter data O = adjust if desired O = computer calculated - DO NOT CHANGE! <br />=4 bedroom Type �I Residential System <br />600 GPD design f(ow <br />No Garbage disposal or pumped to septic <br />F2 500 Gal Septic tank (code minimum) <br />1500 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 =reqs a min 50 ft. long rockbed <br />6) 10.0 ft rockbed width 50.0 ft rockbed length <br />3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />B) =laterals 48.0 1Z0 feet long perfs / lateral 51 perfs total <br />(1/2 a pert means the first perf starts at the middle feed manifold) <br />=inch perfs at =feet residual head gives 0.74 gpm flow rate per perforation <br />for this perf size & spacing, Ft pipe size on line 12, max perfs/lateral = =1 line #8 must be less --> OK <br />10) =doses per day (4 minimum) <br />10 150 gallons per dose (treatment volume) <br />2.00 5x <br />' <br />2) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13) 210 feet of =inch supply line leads tc,36 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 186 gallons TOTAL pump out volume (treatment + drainback) <br />isi 15 feet vertical lift from pump to mound laterals, leads to a: <br />ibl 38 GPM @ 30 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />�7) F1250 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 26.00 Igpi <br />leads to a <br />is) inch swing on Demand float, or timed dosing of 4.9 min ON (confirm pump rate with drawdown <br />7.2 <br />(this delivers Average flow, =70% of Peak design flow)ehn OFF test and adjust as necessary) <br />i9) 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 />21) 22 inches from bottom of tank to "Hi Level" float, or 32 inches to "Hi Level" float if time dosed <br />22) 678 gallons reserve capacity (after High Level Alarm is activated) <br />