Questions & Verified Answers | Latest Update | Graded A+
1. What is the required width of absorption trenches in a pressure distribution
system?
5 feet
2 feet
4 feet
3 feet
2. If a septic system is designed with absorption trenches that are only 2 feet
wide, what potential issues might arise during its operation?
Improved efficiency in wastewater absorption
Reduced need for inspections and permits
Increased distance requirements from water sources
Inadequate wastewater treatment and potential system failure
3. Why is it important to consider soil type, such as clay, when designing a
septic system?
Clay soils have a slower percolation rate, which affects the size of
the drain field needed for effective wastewater treatment.
Clay soils are not suitable for septic systems due to their high
permeability.
Clay soils allow for faster drainage, requiring smaller drain fields.
Clay soils do not impact the design of septic systems.
,4. What is the minimum required length of schedule 40 PVC pipe for septic
tanks as specified in regulations?
10 feet
20 feet
5 feet
15 feet
5. What is the allowable distance between a well and a septic system?
100 ft.
25 ft.
50 ft.
75 ft.
6. What is the sixth step in the procedure for obtaining approval for a septic
system?
Obtaining a permit from local authorities
Conducting an inspection of the septic system
Completion of soil tests before installation
Submittal of installer report form within 10 working days to the
department
7. If a contractor installs a sewer line with a slope of 1/8 in/ft instead of the
required 1/4 in/ft, what potential issue could arise?
Inefficient wastewater flow
Higher installation costs
, Improper filtration of effluent
Increased risk of septic tank overflow
8. Describe the materials that can be used for gravity fed distribution lines in
septic systems according to the regulations.
Gravity fed distribution lines must be made from ASTM D-303 PVC
sewer pipe or ASTM F810 HDPE.
Gravity fed distribution lines can be made from any type of plastic
pipe.
Gravity fed distribution lines must be made from concrete.
Gravity fed distribution lines must be made from metal pipes only.
9. The underground water service and building drain or sewer shall not be less
than _____ feet apart horizontally, if separated by contaminated soil
10
6
5
By administration authority
10. If an installer fails to submit the report form within the specified 10 working
days, what potential consequence could arise regarding the septic system
approval?
The system will be automatically approved.
The septic system can be used immediately.
The installer will receive a fine.
The approval process may be delayed or denied.
, 11. What is the requirement for flow from each outlet of a distribution box in a
septic system?
Varies based on tank size
Equal in volume
No specific requirement
Depends on soil type
12. The higher the level of clay in a soil, the __________ the water infiltration rate.
slower
texture does not affect water infiltration
faster
13. If a certified installer proceeds with a septic system installation without a
permit, what potential consequence might they face during a regulatory
inspection?
They will be given a warning without further consequences.
They will be required to redo the installation at no cost.
They may receive a fine but keep their license.
Their license could be revoked or denied.
14. Why is it necessary to notify the county environmental health department
before backfilling a sewage system?
To ensure compliance with regulations and confirm that the
installation meets health and safety standards.
To schedule future maintenance of the system.
To obtain a permit for future construction.