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2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: Wooddale Builders Date: 12/6/2017 Site Address: 1180 Hunter Drive PID: 2511823420006 Comments: instructions: = enter data = adjust if desired = computer calculated - DO NOT CHANGE! I) 5 bedroom Type I Residential System 750 GPO design flow ;, Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks 4) 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) Tank options: none ;, 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed 6) 10.0 ft rockbed width 63.0 ft rockbed length 7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection s, 3 laterals 61.0 feet long 21.0 perfs / lateral 63 perfs total (1/2 a perf means the first perf starts at the middle feed manifold) 7/32 inch perfs at 1 feet residual head gives 0.56 gpm flow rate per perforation for this perf size &t spacing, a pipe size on line 12, max perfs/lateral = 30 , line #8 must be less --> OK iu) 4.0 doses per day ( 4 minimum) I i; 188 gallons per dose (treatment volume) 2.00 5x 12) 2.00 inch diameter laterals must be used to meet"4x pipe volume" requirement 2.00 3x 13) 238 feet of 2.0 inch supply line leads to 40 gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 228 gallons TOTAL pump out volume (treatment+ drainback) 15) 11 feet vertical lift from pump to mound laterals, leads to a: 16) 36 GPM @ 26 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) 17, 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi leads to a is) 8.9 inch swing on Demand float, or timed dosing of 6.3 min ON (confirm pump rate with drawdown (this delivers Average flow, =70%of Peak design flow) 9 hrs OFF test and adjust as necessary) 10) 12 inches from bottom of tank to "Pump OFF"float 20, 21 inches from bottom of tank to "Pump ON" float, or 12 inches to "Timer ON"float if time dosed 21) 24 inches from bottom of tank to "Hi Level" float, or 34 inches to "Hi Level" float if time dosed 22) 688 gallons reserve capacity (after High Level Alarm is activated)