Choose one answer.
a. a failure in the absorption field
b. a septic tank in need of cleaning
c. a water line leak
d. the need to replace the septic tank
a septic tank in need of cleaning
Question 66
Marks: 1
The placement of the distribution box is not critical as long as it is water tight.
Choose one answer.
a. True
b. False
False
Question 67
Marks: 1
The effectiveness of disinfection depends on
Choose one answer.
a. the degree of treatment the sewerage has received
b. the amount of chlorine used, and the residual chlorine maintained
c. the mixing and retention period
d. all of the above
all of the above
Question 68
Marks: 1
The use of a serial distribution system is considered to have disadvantages over the use of distribution boxes.
Choose one answer.
, a. True
b. False
False
Question 69
Marks: 1
Any excavation in clay, loam, silt or sand more than ______ in depth should have side wall protection to prevent a
cave-in.
Choose one answer.
a. 5 feet
b. 4 feet
c. 3 feet
d. 2 1/2 feet
4 feet
Question 70
Marks: 1
Loam is a mixture of gravel, sand, silt, and clay containing what?
Choose one answer.
a. highly toxic metals
b. potassium and ammonium
c. decayed plant and animal matter
d. dirt
decayed plant and animal matter
Question 1
Marks: 1
The type of filter that is recommended for use at small communities and rural places is the
Choose one answer.
a. rapid sand filter
a. a failure in the absorption field
b. a septic tank in need of cleaning
c. a water line leak
d. the need to replace the septic tank
a septic tank in need of cleaning
Question 66
Marks: 1
The placement of the distribution box is not critical as long as it is water tight.
Choose one answer.
a. True
b. False
False
Question 67
Marks: 1
The effectiveness of disinfection depends on
Choose one answer.
a. the degree of treatment the sewerage has received
b. the amount of chlorine used, and the residual chlorine maintained
c. the mixing and retention period
d. all of the above
all of the above
Question 68
Marks: 1
The use of a serial distribution system is considered to have disadvantages over the use of distribution boxes.
Choose one answer.
, a. True
b. False
False
Question 69
Marks: 1
Any excavation in clay, loam, silt or sand more than ______ in depth should have side wall protection to prevent a
cave-in.
Choose one answer.
a. 5 feet
b. 4 feet
c. 3 feet
d. 2 1/2 feet
4 feet
Question 70
Marks: 1
Loam is a mixture of gravel, sand, silt, and clay containing what?
Choose one answer.
a. highly toxic metals
b. potassium and ammonium
c. decayed plant and animal matter
d. dirt
decayed plant and animal matter
Question 1
Marks: 1
The type of filter that is recommended for use at small communities and rural places is the
Choose one answer.
a. rapid sand filter
