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2011 purple code Mound Design <br /> www.SepticResource.com (vers 12.6) <br /> Property Owner: Water Street Homes Date: 7/1/2014 <br /> Site Address: 1130 Old Crystal Bay Rd.,Orono PID: <br /> Comments: <br /> instructions: -site specific input =adjust if desired -self-calculated(DO NOT ADJUST) <br /> l) 5 bedroom Type i Residential System <br /> 2) 750 GPD design flow <br /> 3) No Garbage disposal or pumped to septic <br /> 4) 2500 Gal Septic tank(code minimum) 2500 Gal Septic tank(design size/LUG req'd) <br /> Tank options: none <br /> 5) 1.2 GPD/ft2 mound sand loading rate <br /> 6) 10 ft rockbed width 62.5 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 /> s) 3 laterals 60.5 feet long ( 21.0 perfs/lateral 63 perfs total <br /> (1/2 a perf means the first pert starts at the middle feed manifold) <br /> 9) 7/32 inch perfs at 1 feet residual head gives . 0.56 gpm flow rate per perforation <br /> for this perf size&spacing,&pipe size on tine 12,max perfs/lateral- 30 ,line q8 must be less--> OK <br /> lo) 4.0 doses per day (4 minimum) <br /> I p 188 gallons per dose (treatment volume) <br /> 12) 2.00 inch diameter laterals(or smaller)will meet"5x pipe volume" <br /> 2.00 inch diameter laterals(or smaller)must be used to meet"4x pipe volume"requirement <br /> 2.00 inch diameter laterals(or smaller)will meet"3x pipe volume" <br /> 13) 300 feet of 2.0 inch supply line leads to 51 gallons of drainback volume <br /> (Tip:"top feed"manifold to control the drainback) <br /> 14) 239 gallons TOTAL pump out volume(treatment+drainback) <br /> 15) 16 feet vertical lift from pump to dispersal area,leads to a: <br /> 16) 36 GPM® 34 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 17) 1250 gal Dose tank(code minimum) 1250 gal Dose tank(design size/LUG req'd) at 12.00 gpi <br /> leads to a <br /> la) 19.9 inch swing on Demand float, or timed dosing of 6.6 min ON (confirm pump rate with drawdown <br /> (to deliver Average flow, 66%of Peak design flow) 9 hrs OFF test and adjust as necessary) <br /> 19) 12 inches from bottom of tank to"Pump OFF"float <br /> 20) 32 inches from bottom of tank to"Pump ON"float,or 12 inches to"Timer ON"float if time dosed <br /> 21) 35 inches from bottom of tank to"HI Level"float,or 45 inches to"Hi Level"float if time dosed <br /> 22) 830 gallons reserve capacity (after High Level Alarm is activated) <br />