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2011 purple code Mound Design <br />www.SepticResource.com (vers 15.2) <br />Property Owner: Lecy Brothers Homes <br />Site Address: 185 Bayside Trail <br />Date: 10/18/2019 <br />PID: 0611723220028 <br />Comments: Primary Site <br />instructions: 77 = enter data = adjust if desired = computer calculated - DO NOT CHANGE! <br />t) bedroom Type �I Residential System <br />2) 750 GPD design flow <br />3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4) F2250 Gal Septic tank (code minimum) 2250 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 62.5 ft. long rockbed <br />6) 10.4 ft rockbed width 63.0 ft rockbed length <br />7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />8)laterals 61.0 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 />9) 7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size & spacing, Et pipe size on line 12, max perfs/lateral = 30 , line #8 must be less — OK <br />10) 4,0 doses per day (4 minimum) <br />l l) 188 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) 125 feet of 2.0 inch supply line leads to 21 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 209 gallons TOTAL pump out volume (treatment + drainback) <br />lS) 12 feet vertical lift from pump to mound laterals, leads to a: <br />i6> 36 JGPM C 23 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />M 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25,49 gpi <br />leads to a <br />18) 8,2 inch swing on Demand float, or timed dosing ofMhrs <br />min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow) OFF test and adjust as necessary) <br />14)Ifl <br />inches from bottom of tank to "Pump OFF" float <br />20) inchesfrom bottom of tank to "Pump ON" float, orM33 <br />inches to "Timer ON" float if time dosed <br />21) inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22) 664 gallons reserve capacity (after High Level Alarm is activated) <br />