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version • Troy Johnson(c�co.Wnaht_mn.us__ 2,p Mo u n d Des��n for questions or comments Property Owner: Gabriel Jabbour Date: 7/22/2013 Site Address: 440 Big Island PID: Comments: instructions: � = req'd input � = input or default � =calculated field *'" =installer info i� �4 bedroom Type � Residential System �� 400 GPD design flow 3> No Garbage disposal or pumped to septic a� *'* 2000 Gallon septic tank (minimum) Multiple tanks or compartment req'd s> 1.2 GPD/ftZ mound sand loading rate 6� 10 ft rockbed width 33.0 ft rockbedlength �� **' 3.0 ft lateral spacing 3.0 ft perforation spacing (defautt 3, range 2-3, for both) end feed manifold connection s� **"�laterals 31.0 feet long 11 perfs / lateral 33 perfs total v� """ 1/4" inch perfs at �feet residual head gives 0.74 gpm flow rate per perforation (3/16" default) (2' head default) for this perf size Ft spacing, Et pipe size on line 12, max perfs/lateral= 25 , line#8 must be less --> OK �o) �doses per day (5 recommended, 4 minimum) (4 will allow 2" laterals, 5 will allow 1.5") i i> 80 gallons per dose (treatment votume) �z� 2.00 inch diameter laterals (or smaller)witl meet"5x pipe volume" **' 2.00 inch diameter laterals (or smaller) must be used to meet"4x pipe volume" requirement 2.00 inch diameter laterals (or smaller)will meet"3x pipe volume" i3� *"* 40 feet of 2.0 inch supply line leads to �7 gallons of drainback volume ("top feed" manifold to control the drainback) �a> 87 gallons TOTAL pump out volume (treatment+drainback) is) 8 feet vertical lift from pump to dispersal area, leads to a: ie> *** 25 GPM C� 14 feet of head, Pump requirement note: >50gpm may require an extra 3-6'of head i�� *** 1000 gal Dose tank (minimum) at approximately 25.00 gpi leads to a is� *** 3.5 inch swing on Demand float, or timed dosing of 3.5 min ON (confirm pump rate with drawdown (<100%of design flow requires a larger OFF[ime) 4.7 hrs OFF test and adjust as necessary) �9� 12 inches from bottom of tank to"pump OFF"float, and/or to cover pump zo� '*" 16 inches from bottom of tank to"pump ON"ftoat, or 15 inches to"timer ON"float 2t� **" 19 inches from bottom of tank to"Hi Level"float (add 5-15 inches if Time Dosed) z?� 525 gallons reserve capacity (after High Level Alarm is activated)