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2411 purple code Mound Design <br />www.SepticResource.com (uers 15.21 <br />Property Owner: Arta Engleman Date: 7/20/2019 <br />Site Address: 315 Old Crystal Bay Road N. PID: 3311823310004 <br />Comments: <br />instructions: = = enter data = adjust if desired = computer calculated - DO NOT CHANGE! <br />1)bedroom Type Residential System <br />2) 600 GPD design flow <br />3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4) 2250 Gal Septic tank (code minimum) 225D 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 50 ft. long rockbed <br />b) 10.0 ft rockbed width 50.0 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 48.0 feet long 17.0 perfs / lateral 51 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 la spacing, l* pipe size on line 12, max perfs/lateral = 30 tine #8 must be less --> OK <br />10) 4.4 doses per day ( 4 minimum) <br />)1) 150 gallons per dose (treatment volume) <br />2.00 5x <br />)2) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13) 265 feet of 2.0 inch supply line leads to 45 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />)4) 195 gallons TOTAL pump out volume (treatment * drainback) <br />)s) 11 feet vertical lift from pump to mound laterals, leads to a: <br />16) 29 IGPM @ 24 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 500 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />Leads to a <br />inch swing on Demand float, or timed dosing of6.7 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 />�) Ifl <br />inchesfrom bottom of tank to "Pump OFF" float <br />n)inches from bottom of tank to "Pump ON" float, orP33 <br />inches to "Timer ON" float if time dosed <br />z)) inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />25) 664 gallons reserve capacity (after High Level Alarm is activated) <br />