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2011 purple code Mound Design <br />www.SepticResource,com (vers 15.2) <br />Property Owner: <br />Site Address: <br />Dave Mariani <br />1180 Homestead Trait <br />Date: 5/15/2018 <br />PID: 2811823320017 <br />Comments: Duel rock bed using un level distribution (Primary site) upper rock bed <br />instructions: = = enter data = adjust if desired = = computer calculated - DO NOT CHANGE! <br />i =bedroom Type �l Residential System <br />300 GPD design flow <br />=Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />a 1500 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 25 ft. long rockbed <br />a, 10.0 ft rockbed width 25.0 ft rockbed length <br />7, 3.0 ft tateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />s, laterals 23.0 feet long 8.0 perfs / lateral 24 1perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />9) 7/32 inch perfs at =feet residual head gives 0 56 gpm flow rate per perforation <br />for this perf size Et spacing, Ft pipe size on line 12, max perfs/lateral = 30 tine #8 must be less > OK <br />lot F 4.0 doses per day ( 4 minimum) <br />11 ) 75 gallons per dose (treatment volume) <br />2.00 5x <br />12 2.00 inch diameter laterals must be used to meet 'Ax pipe volume" requirement <br />2.00 3x <br />13) feet of 2.0 inch supply line leads to ##### gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />too ###### gallons TOTAL pump out volume (treatment + drainback) <br />,a feet vertical lift from pump to mound laterals, leads to a: <br />u,r 14 GPM @ ##### feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 500 I gal Dose tank (code minimum) 500 gal Dose tank (design size / LUG req'd) at gpi <br />leads to a <br />18) ###### inch swing on Demand float, or timed dosing of ##### min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow) ##### hrs OFF test and adjust as necessary) <br />19) Winches <br />inches from bottom of tank to "Pump OFF" float <br />,0) inches from bottom of tank to "Pump ON" float, or 12 inches to "Timer ON" float if time dosed <br />21) from bottom of tank to "Hi Level" float, or ##### inches to "Hi Level" float if time dosed <br />22) ###### gallons reserve capacity (after High Level Alarm is activated) <br />