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REHS EXAM WITH ANS
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Exam of 164 pages for the course REHS at REHS (REHS EXAM WITH ANS)
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REHS Exam (NEW 2023/ 2024 Update) Morethan 500 Questions and Verified Answers|
100% Correct
QUESTION
In a conventional onsite treatment and disposal system consisting of a septic tank and drain field,
most of the biological treatment occurs in the:
A. Septic tank
B. Effluent filter
C. Geo-textile biomat
D. Soil
Answer:
D. Soil
QUESTION
Because septic tanks are so effective at treating wastewater, pumping of the tank only needs to
be performed once every 10 years
A. True
B. False
Answer:
B. False
QUESTION
Soil permeability is closely related to the openings or pore spaces in the soil. The size and
amount of these pore spaces in a soil are most influenced by:
A. soil thickness
B. soil depth
C. soil texture
D. soil color
Answer:
C. soil texture
,QUESTION
The color that most always indicates the point at which the soil is saturated during wetter parts of
the year is:
A. yellow
B. brown
C. gray
D. red
Answer:
C. gray
QUESTION
The soil particle that is sticky and plastic when wet is:
A.Silt
B. Sand
C. Clay
Answer:
C. Clay
QUESTION
The soil particle that is the smallest in size and has the slowest percolation rates is:
A. Sand
B. Silt
C. Clay
Answer:
C. Clay
QUESTION
Identifying the type of vegetation found in a particular soil can be very helpful in determining
that soil's suitability for onsite systems
A. True
B. False
,Answer:
A. True
QUESTION
Which of the following is not a common method for evaluating soils for onsite systems?
A. Spectrometry test
B. Borings
C. In-situ soil pits
D. Percolation test
Answer:
A. Spectrometry test
QUESTION
Identifying the type of structures built in a particular soil can be very helpful in determining that
soil's suitability for onsite systems
A. True
B. False
Answer:
B. False
QUESTION
All of the following are good sources of info about soils and landscape features for particular
parcels of land except:
A. Resource Conservation and Development Councils
B. Soil Survey Maps
C. Geological Maps
D. Natural Resource Conservation Service
Answer:
A. Resource Conservation and Development Councils
, QUESTION
In general, soils are made up of minerals, gases, liquids, and organic matter
A. True
B. False
Answer:
A. True
QUESTION
Alternative secondary treatment filters are considered for use with onsite wastewater treatment
systems unless:
A. space is limited and surface water supplies are inadequate
B. highly porous, sandy soils exist
C. impervious formations are found at a depth in the native soil
D. high groundwater exists
Answer:
C. impervious formations are found at a depth in the native soil
QUESTION
Which of the following is not an attached-growth treatment system?
A. Open-cell foam bio-filter
B. Geo-textile filter
C. Activated sludge system
Answer:
C. Activated sludge system
QUESTION
Secondary treatment systems for onsite applications are designed to:
A.Remove heavy metals and biological contaminants
B. Treat water to drinking quality
C. Provide treatment that normally occurs in the soil column
D. Be less performance-based
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