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SEPTIC LICENSE EXAM
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SEPTIC LICENSE EXAM ...
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SEPTIC LICENSE EXAM 2024-2025How many days before the desired inspection date should you arrange your
appointment? ANSWER: Two working days.
ANSWER: What must happen before covering all or some of the sewage
disposal systems? Must be inspected and approved.
What needs to happen with roof and surface water? Footing or foundation floor
drains or surface diversion ditches must be used to move the water away or
downslope from the sewage disposal system.
What should be done with all pipe junctions, including those in the drain field?
Glued and waterproof.
How much fall should there be on all components of the building sewer?
Answer: 1/8 inch per foot.
Elbows or bends should be no greater than 45 degrees; 90 degree sweeps may
be used.
What is the rating needed for solid pipe under driving, parking, or any vehicle
encroaching areas? The answer is ASTM-3034 crush rating, or encased in a
pipe that does meet it.
Who is the doe? ANSWER Departme
nt of Ecology
What department criteria do you use for sewage that crosses over the waterline?
- Answer Department of Ecology (DOE)
All on-site septic systems should be waterproof except for the dispersal
component.
, Septic tanks should be _____. And on what kind of soil - ANSWER Level, and
on undisturbed soil, or by manufacture specifications if not a concrete tank
If the grade is excavated too deep, what should happen? Sand should be added
for proper bedding back to the appropriate grade.
All tank connections should be watertight.
Tanks should be accessible at grade unless ___-ANSWER A Marker is set at
grade.
How far down should the top of the tank be from the completed grade? -
Answer: 6 inches.
What is an effluent filter? - Answer Placed in the outlet end of the septic tank to
assist in capturing non-biodegradable contaminants before they enter your drain
field.
If getting the top of the tanks 6 inches down is not possible, what must happen?
- ANSWER You must install risers until the riser lids are no more than 6 inches
below final grade.
Tanks must be how far from property lines, easements, building foundations,
foundation drains, down gradient features, and in-ground pools? - ANSWER
5FT
How far should tanks be from pressurized water lines? - ANSWER 10 feet
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