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2011 purple code <br />Mound Design <br />Property Owner: Nelson Residence <br />www.SeptcResource.com (vers 15.2) <br />Date: 10/3/2018 <br />Site Address: 825 Old Crystal Bay Road S. PID: 0911723210001 <br />Comments: Proposed Lots 1 li 2 Topside <br />Instructions: = = enter data 0 = adjust if desired L� = computer calculated - DO NOT CHANGE! <br />t) n/a bedroom Type I ' I Residential System <br />2) 1200 GPD design flow <br />3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4) 3750 Gal Septic tank (code minimum) 3750 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />s) 1.2 GPD/ftz mound sand loading rate contour loading rate of 12 req's a min 100 ft. long rockbed <br />6) 10.0 ft rockbed width 100.0 ft rockbed length <br />7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />middle feed manifold connection <br />8) laterals 49.0 feet long 1 b.5 perfs / lateral 99 perfs total <br />(1 /2 a pert 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 tt spacing, it pipe size on line 12, max perfs/lateral - =1 line #8 must be less OK <br />10) 4,0 doses per day (4 minimum) <br />11) 300 gallons per dose (treatment volume) <br />2.00 5x <br />12) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13) 105 feet of 2.0 inch supply line leads to18 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 318 gallons TOTAL pump out volume (treatment + drainback) <br />�s) 19 feet vertical lift pump to mound laterals, leads to a: <br />@34 <br />16) 56 GPM feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 1200 gal Dose tank (code minimum) 2000 gal Dose tank (design size / LUG req'd) at 47.62 gpi <br />leads to a <br />is) 6.7 inch swing on Demand float, or timed dosing of 5.7 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design I F'g'lhrs OFF test and adjust as necessary) <br />19) 12 inches from bottom of tank to "Pump OFF" float <br />20) 19 1 inches from bottom of tank to "Pump ON" float, orP32 <br />inches to 'Timer ON" float if time dosed <br />21) 22 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22) 952 gallons reserve capacity (after High Level Alarm is activated) <br />