Water Treatment Plant Operator 3 & 4

Water quality problems caused by anaerobic water entering the intake (inlet), include high concentrations of the following?
a) dissolved oxygen
d) hydrogen sulfide (H2 S)
c) hardness
d) iron
b) hydrogen sulfide(H2 S)
Static head is defined as the?
a) energy of motion of the water
b) pressure loss in the line due to friction
c) pressure due to depth or elevation of the water
d) sum of the above
c) pressure due to depth and elevation of the water
The major factor leading to reservoir turnover is caused by?
a) the lower strata being warmer than the upper strata
b) the upper strata being more dense and sinking to the bottom
c) the upper and lower strata reaching the same temp
d) decaying organic matter causing a gaseous movement
b)the upper strata Bing more dense and sinking to the bottom
A taste and odor (T&O) scale has been developed. An odor number above __________ is considered objectional.

a) 1.0
b) 3.0
c) 5.0
d) 15.0

a) 3.0
Water rights acquired by diverting a water course and then putting it to beneficial use is refered to as exercising:

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a) prescriptive rights
b) awarded rights
c) appropriative rights
d) riparian tights

c) appropriative rights
Your distribution system is supplied by a well with high concentrations of iron and manganese. Aeration can oxidize such impurities as iron and manganese when followed by long detention times and media filtration to remove insoluble forms. A more effective way of removing iron and manganese is to feed _______ followed by filtration through ________.

a) lime / a mixed media bed
b) sodium hydroxide / activated carbon
c) potassium permanganate / manganese greensand
d) chlorine / sand filtration

c) potassium permanganate / manganese greensand
A reliable quantity of groundwater can usually be found in:

a) a confined aquifer
b) the capillary fringe
c) a gravity spring
d) the point of infiltration

a) a confined aquifer
Perchlorate in drinking water can temporarily deny the body the following essential elements :

a) nitrate
b) iodine
c) calcium
d) vitamin D

b) iodine
The Ground Water Rule requires :

a) continuous sampling.
b) a 4 log disinfection effort
c) a risk-targeted approach
d) both b and c

d) both b and c
A new viral microbial that must be laboratory tested for is:

a) E. coliform
b) coliphage
c) color
d) turbidity

b) coliphage
Under the Groundwater Rule, a single coliform positive requires ____ additional samples from the same well-site within 24 hours.

a) 1
b) 2
c) 3
d) 5

d) 5
The Interim Enhanced Surface Water Treatment Rule of 1998 requires:

a) disinfection profiling and benchmarking
b) testing of combined filter effluent every 4 hours
c) sanitary survey conducted by the state every 3 years
d) all of the above

d) all of the above
Under the Interim Enhanced Surface Water Treatment Rule, the following are profiled and benchmarked:

a) utility and colloids
b) TTHMs and HAA5 levels
c) Guardia and Cryptospridium
d) Bacteria and viruses

b) TTHMs and HAA5 levels
Under the Long Term 2 Enhanced Surface Water Treatment Rule, BIN numbers identify the concentration of:

a) Giardia
b) Cryptosporidium
c) Norwalk virus
d) Algae

b) Cryptosporidium
As defined by the State, under the Long Term 2 Enhanced Surface Water Treatment Rule, log removal can be as high as:

a) 2.5
b) 4.0
c) 5.0
d) 5.5

d) 5.5
Under the Long Term 2 Enhanced Surface Water Treatment Rule, systems are required to:

a) monitor their source water
b) calculate an average Cryptosporidium concentration
c) Use the results to determine if the system is vulnerable to contamination
d) all of the above

d) all of the above
Under the Disinfectant / Disinfectant Byproducts Rule, it establishes:

a) seven new standards and treatment techniques of enhanced coagulation or enhanced softening to reduce DBP exposure
b) establishes a percentage of TOC removal based on alkalinity present
c) establishes monitoring frequency and a running annual average based on population served
d) All of the above

d) All of the above
System 1 and System 2 designated reference:

a) population served
b) waivers in place
c) includes CWS and NTNCWS designated systems
d) both A and C

d) Both A and C
The current MCL for THMs is:

a) 0.100 mg/l
b) 0.08 mg/l
c) 0.06 mg/l
d) 0.3 mg/l

b) 0.08 mg/l
What is VOC?
Volatile Organic Compound
What is SOC?
Synthetic Organic Compound
Perchlorate is a Tier 1 acute health hazard and requires Public Notice within:
24 hours if required by CDPH
The MCL for perchlorate is:
6.0 ug/l or 0.006mg/l
What is MCL and MCLG?
MCL – Maximum Contaminant Level

MCLG- Maximum Contaminant Level Goal

What is MRDL and MRDLG
MRDL – Maximum Residual Disinfectant Level

MRDLG – Maximum Residual Disinfectant Level Goal

What is TTHM?
Total Trihalomethane
What is HAA5?
Five Haloacetic Acids
What do TTHMs consists of?
Chloroform
Bromodichloromethane
Dibromochloromethane
Bromoform
What are the five (HAA5s)?
Monochloroacetic Acid
Dichloroacetic Acid
Trichloroacetic Acid
Bromoacetic Acid
Dibromoacetic Acid
MCL for TTHMs
0.08 mg/l
MCL for HAA5s
0.06 mg/l
MRDL for Chlorine
4.0 mg/l as Cl2
MRDL for Chloramines
4.0 mg/l as Cl2
MRDL for Chlorine dioxide
0.8 mg/l
For what reason do you support fractures of limbs with splints?

A. To prevent bleeding
B. To prevent infection
C. To make sure that the fractured bone fuses together properly
D. To relieve pain and to prevent further injury

D. To relieve pain and to prevent further injury
If air is being blown out and sucked in through a chest wound, you should?

A. Apply hand pressure to the wound to stop the bleeding.
B. Make the wound airtight as soon as possible
C. Turn the patient, so that he lays on his uninjured side
D. Treat him for shock and seek medical aid

B. Make the wound airtight as soon as possible
Which practice should NOT be performed to stop Chlorine leaks?

A. Tightening the packing gland nut
B. Spray water on the leak
C. Closing the leaking valve
D. Replacing the gasket

B. Spray water on the leak
The chlorine room should be constructed so it can be entered only from the?

A. Inside the building.
B. Outside of the building.
C. Laboratory.
D. Outside and inside the building.

B. Outside of the building.
The outlet of a forced ventilation system for a chlorinator room should be located?

A. Near the floor.
B. On the roof.
C. Above the window.
D. 6 feet above the floor.

A. Near the floor.
Your shift operator calls you at home and informs you that a chlorine tank in the plant is leaking and cannot be stopped. What should you do first?

A. Get over to the plant as fast as possible.
B. Contact the police department and advise of the possible dangers of chlorine gas to residents down wind from the leak.
C. Call the chlorine company manufacturers for instructions.
D. Tell the operator to keep you posted.

B. Contact the police department and advise of the possible dangers of chlorine gas to residents down wind from the leak.