REHS Questions and Verified Answers|
100% Correct (NEW 2023/ 2024 Update)
Grade A
QUESTION
How deep should the absorption beds and trenches in a drainfield be for a septic system?
a. Deep (12 ft) and sloped
b. shallow (1-5 ft) and level
Answer:
shallow (1-5 ft) and level
QUESTION
What formation should an absorption beds be with a water table of 6 inches?
Answer:
Mounded
QUESTION
How often should a septic tank be inspected?
a. annually
b. biannually
c. every 5 years
Answer:
biannually
QUESTION
How often should septic tank be pumped?
a. every 3-5 years, depending on use
,b. everyday
c. never
d. annually
Answer:
every 3-5 years, depending on use
QUESTION
A septic tank is found to be sitting in a high water table, what is a possible consequence?
Answer:
The tank may float or tilt
QUESTION
A newly installed septic system can be used within:
a. 24 hours
b. 6 months
c. immediately
Answer:
immediately
QUESTION
Sludge can be disposed of in all of the following ways except:
a. composting
b. landfill
c. ocean dumping
d. incineratino
Answer:
ocean dumping
,QUESTION
Ground water samples are taken all of the following ways except:
a. bored
b. dug
c. cores
d. percolation test
Answer:
percolation test
QUESTION
EPA stream water quality rate for fecal coliforms is:
a. when coliforms are 200 colonies per 100 ml or less
b. no coliforms in water
c. according to city code
Answer:
when coliforms are 200 colonies per 100 ml or less
QUESTION
Wastewater treatment plant employee is likely to get what?
Answer:
Hepatits A
QUESTION
How to determine amount of coliforms in water?
a. plate count test
b. total coliform count or the COLILERT test
c. total plate count
, Answer:
total coliform or the COLILERT test
QUESTION
Which produces the most BOD:
a. small office building
b. restaurant
c. trailer park
d. daycare/school
Answer:
restaurant
QUESTION
Lime coagulation, mixed media filtration and activated carbon filtration will greatly reduce:
Answer:
EPA priority pollutants
QUESTION
Plants absorb certain constituents of wastewater. Using wastewater for irrigation of consumable
plant products may present a health hazard to humans if the water contains:
Answer:
Cadmium
QUESTION
The reliability and interpretation of the soil percolation test are affected by all of the following
except:
a. evaluation of site investigation, soil profile, and suitability
b. size or diameter of the test hole
c. shape of the test hole
100% Correct (NEW 2023/ 2024 Update)
Grade A
QUESTION
How deep should the absorption beds and trenches in a drainfield be for a septic system?
a. Deep (12 ft) and sloped
b. shallow (1-5 ft) and level
Answer:
shallow (1-5 ft) and level
QUESTION
What formation should an absorption beds be with a water table of 6 inches?
Answer:
Mounded
QUESTION
How often should a septic tank be inspected?
a. annually
b. biannually
c. every 5 years
Answer:
biannually
QUESTION
How often should septic tank be pumped?
a. every 3-5 years, depending on use
,b. everyday
c. never
d. annually
Answer:
every 3-5 years, depending on use
QUESTION
A septic tank is found to be sitting in a high water table, what is a possible consequence?
Answer:
The tank may float or tilt
QUESTION
A newly installed septic system can be used within:
a. 24 hours
b. 6 months
c. immediately
Answer:
immediately
QUESTION
Sludge can be disposed of in all of the following ways except:
a. composting
b. landfill
c. ocean dumping
d. incineratino
Answer:
ocean dumping
,QUESTION
Ground water samples are taken all of the following ways except:
a. bored
b. dug
c. cores
d. percolation test
Answer:
percolation test
QUESTION
EPA stream water quality rate for fecal coliforms is:
a. when coliforms are 200 colonies per 100 ml or less
b. no coliforms in water
c. according to city code
Answer:
when coliforms are 200 colonies per 100 ml or less
QUESTION
Wastewater treatment plant employee is likely to get what?
Answer:
Hepatits A
QUESTION
How to determine amount of coliforms in water?
a. plate count test
b. total coliform count or the COLILERT test
c. total plate count
, Answer:
total coliform or the COLILERT test
QUESTION
Which produces the most BOD:
a. small office building
b. restaurant
c. trailer park
d. daycare/school
Answer:
restaurant
QUESTION
Lime coagulation, mixed media filtration and activated carbon filtration will greatly reduce:
Answer:
EPA priority pollutants
QUESTION
Plants absorb certain constituents of wastewater. Using wastewater for irrigation of consumable
plant products may present a health hazard to humans if the water contains:
Answer:
Cadmium
QUESTION
The reliability and interpretation of the soil percolation test are affected by all of the following
except:
a. evaluation of site investigation, soil profile, and suitability
b. size or diameter of the test hole
c. shape of the test hole
