TCEQ SURFACE WATER COURSE EXAM
Questions and Answers
1. A
restricted zone around a surface water intake of feet
radius shall be established and all recreational activities
prohibited.
a. 500'
b. 200'
c. 1000'
d. 800'
e. None of the above: b. 200'
2. The primary standard for calibrating a nephelometer is:
a. formic acid
b. fluoride
c. formazin
d. ferric chloride
e. silver sulfate: c. formazin
3. The process where smaller particles in the water are combined to
,form larger heavier ones that sink in a settling basin is called:
a. coagulation
b. pre-sedimentation
c. disinfection
d. oxidization
e. filtration: a. coagulation
4. A inch rise per minute in the filter is required to give a
good backwash
a. 35
b. 25
c. 40
d. 20
e. None of the above: b. 25
5. Un
der normal conditions a rapid sand filter operates a 2 gpm/ft
square. During the back wash cycle the back wash rate should
be
per
ft square.
,a. 15 gpm
b. 20 gpm
c. 35 gpm
d. 8 gpm
e. 16 gpm: e. 16 gpm
6. When softening water which process is used?
a. sodium zeolite
b. lime/soda ash
c. phosphate exchange
d. all of the above
e. a and b: e. a and b
7. You have a rapid sand filter that is 12' wide x 12' long x 6' deep.
During a back wash event it takes 90 seconds to drain 6". What is
the filter rate in gallons per minute per square foot?
a. 5
b. 3.74
c. 25
d. 2.5: d. 2.5
, 8. A water plants treats 750,000 gallons per day. The normal chlorine
dosage is 8 mg/L. If the disinfectant used is 65% calcium
hypochlorite, how many pounds of calcium hypochlorite are fed
each day?
a. 33
b. 77
c. 50
d. 55: b. 77
9. Solids and turbidity
in raw water come form urban run-off, stream-bank erosion,
agricultural run off, and
a. algae
b. industry discharge
c. treatment sludge
d. domestic sewage: b. algae
10. Geosmin or cause taste and odor in water
a. methylisoboreal
b. methylbutanol
c. powdered carbon
d. methane
Questions and Answers
1. A
restricted zone around a surface water intake of feet
radius shall be established and all recreational activities
prohibited.
a. 500'
b. 200'
c. 1000'
d. 800'
e. None of the above: b. 200'
2. The primary standard for calibrating a nephelometer is:
a. formic acid
b. fluoride
c. formazin
d. ferric chloride
e. silver sulfate: c. formazin
3. The process where smaller particles in the water are combined to
,form larger heavier ones that sink in a settling basin is called:
a. coagulation
b. pre-sedimentation
c. disinfection
d. oxidization
e. filtration: a. coagulation
4. A inch rise per minute in the filter is required to give a
good backwash
a. 35
b. 25
c. 40
d. 20
e. None of the above: b. 25
5. Un
der normal conditions a rapid sand filter operates a 2 gpm/ft
square. During the back wash cycle the back wash rate should
be
per
ft square.
,a. 15 gpm
b. 20 gpm
c. 35 gpm
d. 8 gpm
e. 16 gpm: e. 16 gpm
6. When softening water which process is used?
a. sodium zeolite
b. lime/soda ash
c. phosphate exchange
d. all of the above
e. a and b: e. a and b
7. You have a rapid sand filter that is 12' wide x 12' long x 6' deep.
During a back wash event it takes 90 seconds to drain 6". What is
the filter rate in gallons per minute per square foot?
a. 5
b. 3.74
c. 25
d. 2.5: d. 2.5
, 8. A water plants treats 750,000 gallons per day. The normal chlorine
dosage is 8 mg/L. If the disinfectant used is 65% calcium
hypochlorite, how many pounds of calcium hypochlorite are fed
each day?
a. 33
b. 77
c. 50
d. 55: b. 77
9. Solids and turbidity
in raw water come form urban run-off, stream-bank erosion,
agricultural run off, and
a. algae
b. industry discharge
c. treatment sludge
d. domestic sewage: b. algae
10. Geosmin or cause taste and odor in water
a. methylisoboreal
b. methylbutanol
c. powdered carbon
d. methane
