Septic Quiz Flashcards
1) Disposal fields shall not be installed under a roadway or ______
drive way
2) what is the purpose of the outlet screen of a septic chamber?
- protection
- To maintain seperation
- Suspended solids stay back
3) Gravity system
Open bottom sand filter
The open bottom filter shall not be located whitin:
____m (__’) of a protery line, measure from the foot of the berm
1.5m (5’)
3) Gravity system
Open bottom sand filter
The open bottom filter shall not be located within:
___m (__’) of a water source
15m (50’)
3) Gravity system
Open bottom sand filter
The open bottom filter shall not be located within:
__m (__’) of a watercourse
15m (50’)
3) Gravity system
Open bottom sand filter
The open bottom filter shall not be located within:
__m (__’) of a basement or cellar
9m (30’)
3) Gravity system
Open bottom sand filter
The open bottom filter shall not be located whitin:
__m (___’) of a building without a basement
3m (10’)
1) Disposal fields shall not be installed under a ______ area
paved
1) Disposal fields shall not be installed under any _________
structure
1) Disposal fields shall not be installed under a _________ garden
vegetable
List the minimum clearance requirements for a packaged sewage treatment plant from:
a property line _____
1m (3.25’)
List the minimum clearance requirements for a packaged sewage treatment plant from:
a watercourse _____
15m (50’)
List the minimum clearance requirements for a packaged sewage treatment plant from:
a water source _____
9m (30’)
List the minimum clearance requirements for a packaged sewage treatment plant from:
a building ____
1m (3.25’)
A good installation practice is to install laterals at no greater length than ___m (___’)
30m (100’)
How much grade should you put on laterals?
None, they should be run flat
5) what is the capacity of field versus the volume of dose?
Dose = 100% of field
What are the methods of disposal on sloping ground?
- distro box
- drop box (like a rice field)
- bi level crosses
What is the purpose of a san-tee on the oulet of a septic tank?
It holds back the all the scum and allows cleaner effluent to travel
what type of soil is used on top of a septic field?
loamy soil
- fluffy porous soil that doesnt compact
How is an effluent lagoo treated?
By the sun
-evaporation and UV
Septic retention (duration)
24 hours
What type of bacteria action occurs within the septic chamber or tank?
anarobic bacteria
At what max depth of sludge should the septic tank be cleaned?
450mm (18”)
The volume of discharge from effluent chamber is determined by?
- start: a perculation test
- end: discharge (loading rate of field)
What is the purpose of a distro box?
To premote even load on laterals
- even distribution
