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2011purpiecode Multi Flow Et Pressure Bed <br />wunni Cen4inC7venurne n i..,..., a e rn <br />Property Owner: Thomas Hamiltonv v ` <br />Date: 10!21/2017 <br />Site Address: Lot 2,13Ik.1, Fox Hill Orono PID: <br />Comments: digout Ft backfill with sand <br />instructions: = site specific input = = adjust if desired 0 = self -calculated (DO NOT ADJUST) <br />r) =bedroom Type IV Residential System <br />a) 750 GPD design flow (average flow should be C 70% of design flow) <br />PRETREATMENT: (Residential strength to [eve( "A") <br />i) 1500 Gallon Trash trap/pump tank to Multi -flow split -500 gal trash trap - 1000 dose tank <br />c) 750 Gallon Multi -flow unit <br />30 gpm 10 ft head TREATMENT pump 48 doses per day 15.5 gal /dose (treatment) <br />10 Ifeet of 2.0 1 inch supply line leads to 2 gallons of drainback volume <br />17.6 gallons total pump out volume <br />Timed dosing of 35 sec ON (confirm pump rate with drawdown <br />29,4 min OFF test and adjust as necessary) <br />=inches from bottom of tank to Timer ON float <br />Hi level Alarm to be set at 75 % of tank capacity <br />UV light req'd No <br />DISPERSAL: <br />0.78 GPD/ft Soil Loading Rate 962 ft (code minimum) 1005 ft (design size /LUG req'd) <br />EE <br />Treatment Level A/B (must match soil boring log) <br />8s 15.0 ft desired bed width, leads to a67.0 ft bed length <br />(25' maximum) <br />9) =ft lateral spacing 3.0 ft perforation spacing { maximum 3 for both) <br />end feed manifold connection <br />10) laterals 65.0 feet long 22.0 perfs / lateral 110 perfs total <br />(1 /2 perf means the 1 st perf starts at the middle feed manifold) <br />))) 3/1b inch perfs at =feet residual head gives 0.42 gpm flow rate per perforation <br />( If bed has > l' of cover, increase residual head for cleanout reqs) <br />for this perf size It spacing, ft pipe size on line 14, max perfs/lateral = 22 line #10 must be less > OK <br />12) F4.0 doses per day (4 minimum) <br />13) 188 gallons per dose (treatment volume) <br />1.50 5x <br />14) 1.50 inch diameter laterals must be used to meet "4x pipe volume" reauirement <br />2.00 3x <br />