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2011 purple code Mound Design <br />www.SepticResource.com (vers 15.2) <br />Property Owner: Dave Mariani <br />Site Address: 1180 Homestead Trail <br />Date: 5/15/2018 <br />PID: 2811823320017 <br />Comments: Duel rock bed using un level distribution (Primary site) lower rock bed <br />instructions: = = enter data = adjust if desired = = computer calculated - DO NOT CHANGE! <br />i) =2 bedroom Type �I Residential System <br />2) F300 JGPD design flow <br />3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4) 1500 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />5) 1.2 GPD/ftz mound sand loading rate contour loading rate of =req's a min 25 ft. long rockbed <br />6) 10.0 ft rockbed width 25.0 ft rockbed length <br />71 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />8) 0laterals 23.0 feet long 8.0 perfs / lateral 24 perfs 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 Ft spacing, ft pipe size on tine 12, max perfs/lateral = 30 line #8 must be less OK <br />10) 4.0 doses per day (4 minimum) <br />1 n 75 gallons per dose (treatment volume) <br />2.00 5x <br />12) F2.001inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13, 133 feet of 2.0 inch supply line leads to 23 gallons of drainback volume <br />(Tip: "top feed" manifo(d to control the drainback) <br />14) 98 gallons TOTAL pump out volume (treatment + drainback) <br />t5) 15 feet vertical lift pump to mound laterals, leads to a: <br />16) 29 GPM C =feet of head, Pump requirement (note: '50gpm may require an extra 3-6' of head) <br />17) 500 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />leads to a <br />18} 6.8 inch swing on Demand float, or timed dosing of 6 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design fLow) 1 9Jhrs OFF test and adjust as necessary) <br />Ig)12 inches from bottom of tank to "Pump OFF" float <br />20) 19 inches from bottom of tank to "Pump ON" float, orP32 <br />inches to "Timer ON" float if time dosed <br />2)) 22 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22) 739 gallons reserve capacity (after High Level Alarm is activated) <br />