2003-P06827 - new septic system - Laserfiche WebLink

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i � � y Risers — Use 24" diameter heavy corrugated pvc pipe. A watertight seal must be created Ibetween top of tank and the each riser. Top of risers shall be a minimum 3" above finished grade. , r Riser Covers — Use 24" diameter fiberglass covers with aske Orenc g t, o model # FL24G. Do not bury riser covers. ' .� Lift Tank — Use the 500 gallon chamber of the two compartment tank. Place riser and riser / cover on tank as described above. � ' y Screened Pump Vault— Place an Orenco model #PVU57-1819 in the lift tank through the maintenance hole. Place an Orenco modi�ed well pump model # P20051 I, I 15V, % hp, (or equivalent) in the flow inducer of the pump vault. Connect 2" schedule 40 pvc discharge pipe ' to pump and extend discharge pipe through riser wall. Place a camlock on the discharge pipe between pump and the riser for easy disconnect. Drill a 3/16" weep hole at the invert of the ' 90-degree bend in the discharge pipe to allow drain back. Use all high-pressure fittings. : High Level Alarm/Float - Use an Orenco AI/RO Simplex Control Panel/Level Alarm or ' equivalent, with high level, pump on/ofF and redundant alarm functions. Use Orenco #MFABT float assembly or equivalent to operate pump on/ofF controls and for high liquid level alarm, and ' low water/redundant off alarm. Set the float tether to activate the level alarm should the liquid level reach the inlet invert of the septic tank. ' :> Place the level alarm inside of the house in a location where the alarm can be heard. Run all wires from the pump and floats through a grommet installed in the riser wall then through ' plastic conduit from the riser up to the splice box mounted above ground on a permanent pole or post or equivalent. Seal opening in riser where wires pass through. ' > Drain field — Use Infiltrator H-I 0 High Capacity Sidewinder brand chambers, or equal for the drain field media. This model of chamber must to equal to 12" of sidewall when comparing to a ' standard rock trench configuration. Dig the trenches 3' wide to the lengths and depths given in the design specifications. Place a drop box at the end of each trench, connecting drop boxes , with 4" pvc pipe. Place twelve inches of a sandy to loamy soil material over each of the chambers. Seed entire disturbed area. ' 3 ' I