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2011 purple code Mound Design <br />www.SepticResource.com (vers 15.2) <br />Property Owner: Gordon James Date: 7/21/2018 <br />Site Address: 225 Old Crystal Bay Road S. PID: 0411723240002 <br />Comments: Future Site <br />instructions: 0 = enter data = adjust if desired = computer calculated - DO NOT CHANGE! <br />bedroom Type Residential System <br />750 GPD design flow <br />Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />,, 1.2 GPD/ftz mound sand loading rate contour loading rate of =req's a min 62.5 ft. long rockbed <br />c 10.0 ft rockbed width 62.5 ft rockbed length <br />7t 3.D ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />laterals bD.S feet long 21.0 perfs / lateral 63 perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />Q1 7132 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size Et spacing, Et pipe size on line 12, max perfs/lateral = 30 line #8 must be less > OK <br />i 4.0 doses per day (4 minimum) <br />i 188 gallons per dose (treatment volume) <br />2.00 5x <br />2.OD inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />r ; feet of 2.0 inch supply line leads to =gallons of drainback volume <br />(Tip: "tap feed" manifold to control the drainback) <br />i r) 188 gallons TOTAL pump out volume (treatment +drainback) <br />i;) 0 feet vertical lift from pump to mound laterals, leads to a: <br />s0, 36 GPM @ I�Jfeet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />i7 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />leads to a <br />is 7.4 inch swing on Demand float, or timed dosing of5.2 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 />12 inches from bottom of tank to "Pump OFF" float <br />} 19 inches from bottom of tank to "Pump ON" float, or12 inches to "Timer ON" float if time dosed <br />,i 2Z inches from bottom of tank to "Hi Level" float, or F32 inches to "Hi Level" float if time dosed <br />689 gallons reserve capacity (after High Level Alarm is activated) <br />