15136306
Descripción
Test por Joe Jorgensen, actualizado hace más de 1 año
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Creado por Joe Jorgensen
hace casi 6 años
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Pregunta 1
Pregunta
Chief operators never use past records to adjust treatment processes.
Respuesta
- True
- False
Pregunta 2
Pregunta
All water comes in the form of precipitation.
Respuesta
- True
- False
Pregunta 3
Pregunta
Many organisms that cause disease in humans originate with the fecal discharges of infected individuals.
Respuesta
- True
- False
Pregunta 4
Pregunta
Rain water is pure
Respuesta
- True
- False
Pregunta 5
Pregunta
Groundwater is high in dissolved oxygen
Respuesta
- True
- False
Pregunta 6
Pregunta
The impact of a contaminant on surface water depends on the receiving water’s ability to assimilate contaminant
Respuesta
- True
- False
Pregunta 7
Pregunta
An Oligotrophic lake has low nutrient content.
Respuesta
- True
- False
Pregunta 8
Pregunta
reatment plant operators do not need to keep informed of local, state and federal regulations.
Respuesta
- True
- False
Pregunta 9
Pregunta
Local conditions have an influence on methods of managing lakes and reservoirs used for domestic water supplies.
Respuesta
- True
- False
Pregunta 10
Pregunta
Precipitation is high in bacterial count.
Respuesta
- True
- False
Pregunta 11
Pregunta
Color in water is objectionable mainly from the standpoint of health.
Respuesta
- True
- False
Pregunta 12
Pregunta
The specific disease-producing organisms present in water are hard to identify
Respuesta
- True
- False
Pregunta 13
Pregunta
Temperature has no impact on the effectiveness of copper sulfate
Respuesta
- True
- False
Pregunta 14
Pregunta
Excessive Nitrate in drinking water can lead to cancer
Respuesta
- True
- False
Pregunta 15
Pregunta
The Interim Enhanced Surface Water Treatment Rule does not address Cryptosporidium.
Respuesta
- True
- False
Pregunta 16
Pregunta
Measuring biological oxygen demand can be used to indirectly measure the organic content of the water
Respuesta
- True
- False
Pregunta 17
Pregunta
The State’s regulatory program can be less stringent than the US EPA’s program.
Respuesta
- True
- False
Pregunta 18
Pregunta
Primary drinking water standards are not mandatory standards.
Respuesta
- True
- False
Pregunta 19
Pregunta
Stratification develops when a warm layer of water overlies a colder layer
Respuesta
- True
- False
Pregunta 20
Pregunta
Under the Total Coliform Rule the MCL is violated if 5% of the samples collected in a month are total coliform positive.
Respuesta
- True
- False
Pregunta 21
Pregunta
Porosity is the volume of space in a given amount of material.
Respuesta
- True
- False
Pregunta 22
Pregunta
Drawdown is the water level in a well when the pump is on moving water.
Respuesta
- True
- False
Pregunta 23
Pregunta
Suspended matter has little or no effect on copper sulfate treatment.
Respuesta
- True
- False
Pregunta 24
Pregunta
There is no minimum requirement for distribution chlorine residual under the SWTR.
Respuesta
- True
- False
Pregunta 25
Pregunta
The turbidity requirement under the Interim Enhanced Surface Water Treatment rule is <0.3 NTU
Respuesta
- True
- False
Pregunta 26
Pregunta
The ________ is the continuous exchange of water between the earth and the atmosphere.
Respuesta
-
Hydropneumatic cycle
-
Life cycle
-
Hydraulic gradient
-
Hydrologic cycle
Pregunta 27
Pregunta
What is the purpose of a water treatment plant?
Respuesta
-
To produce safe and pleasant drinking water
-
To produce water containing toxic substances
-
To produce water transmitting disease-causing organisms
-
To produce water with agreeable taste, odor or appearance
Pregunta 28
Pregunta
What does the size of a water treatment plant depend upon?
Respuesta
-
The water supply
-
Impurities in the water
-
Regulatory Factors
-
All of the above
Pregunta 29
Pregunta
All of the following factors influence the concentration of copper sulfate needed for effective control of algae blooms except?
Respuesta
-
Alkalinity
-
Water pH
-
Septic tanks
-
Water temperature
Pregunta 30
Pregunta
What is the purpose of the chemical coagulation process?
Respuesta
-
Cause very fine particles to clump together into larger particles
-
Filter out remaining suspended particles
-
Kill disease-causing organisms
-
Settle out larger suspended particles
Pregunta 31
Pregunta
Which constituent is not a chemical contaminant?
Respuesta
-
Inorganic
-
Volatile Organic
-
Synthetic Organic
-
Bacteria
Pregunta 32
Pregunta
A water-bearing geological formation is referred to as a(n)?
Respuesta
-
Aquifer
-
Aquarium
-
Water table
-
Bed rock
Pregunta 33
Pregunta
A 4 log removal rate is equal to what percent?
Respuesta
-
90
-
99
-
99.9
-
99.99
Pregunta 34
Pregunta
Whenever a chemical algae control program is started, when should monitoring be performed?
Respuesta
-
Before, during and after use of chemicals
-
Before visits by regulatory agencies
-
When staff are available
-
Whenever results are needed for analysis
Pregunta 35
Pregunta
Plants give off water vapor to the atmosphere through a process called?
Respuesta
-
Percolation
-
Evaporation
-
Transpiration
-
All of the Above
Pregunta 36
Pregunta
Organic matter combined with chlorine can create?
Respuesta
-
Septic Conditions
-
Trihalomethane's
-
Acidic water unfit for human consumption
-
Legionella
Pregunta 37
Pregunta
Which of the following does not influence surface runoff?
Respuesta
-
Rainfall intensity
-
Soil composition
-
Mineral content of the water
-
Vegetation covering the ground
Pregunta 38
Pregunta
Surface water runoff such as creeks and rivers collect water from an area of land towards one primary water course and is known as the?
Respuesta
-
Contributory
-
Pooling area
-
Watershed
-
Canyon
Pregunta 39
Pregunta
When using a river or stream as a water supply, what is a major concern?
Respuesta
-
Downstream usage
-
Spawning conditions
-
Groundwater quality
-
Upstream conditions
Pregunta 40
Pregunta
The area outward from the center of a well that is affected during pumping is called the?
Respuesta
-
Radius of influence
-
Zone of saturation
-
Water table
-
Impervious section
Pregunta 41
Pregunta
The Surface Water Treatment Rule requires the ________ and ________ of Giardia
Respuesta
-
Coagulation and sedimentation
-
Removal and inactivation
-
Disinfection and flocculation
-
Coagulation and disinfection
Pregunta 42
Pregunta
A direct filtration water treatment plant does not include?
Respuesta
-
Coagulation
-
Sedimentation
-
Filtration
-
Flocculation
Pregunta 43
Pregunta
What is the major type of problem caused by waste water contamination of a domestic water supply?
Respuesta
-
Loss of reservoir capacity
-
Scouring
-
Siltration
-
Nutrient loading
Pregunta 44
Pregunta
Why must operators constantly monitor raw water quality in a river?
Respuesta
-
To detect sudden pollutant loads
-
To inform the public in Consumer Confidence Reports
-
To justify lab workload and budget
-
To notify wastewater treatment plant operators
Pregunta 45
Pregunta
What are the primary responsibilities of Water Treatment Operators?
Respuesta
-
Produce pleasant drinking water
-
Produce safe drinking water
-
Protect health and well-being of the community
-
All of the above
Pregunta 46
Pregunta
Which is not a trophic state of a lake?
Respuesta
-
Oligotrophic
-
Endotrophic
-
Mesotrophic
-
Eutrophic
Pregunta 47
Pregunta
A disinfected water supply is one in which
Respuesta
-
All bacteria and viruses have been sterilized
-
All algae have been destroyed
-
All pathogenic organisms have been inactivated or destroyed
-
All of the above
Pregunta 48
Pregunta
Which of the following is not considered a point source discharge?
Respuesta
-
Wastewater discharge
-
Mine drainage
-
Storm water runoff
-
Industrial discharges
Pregunta 49
Pregunta
Which of the following is not a characteristic of Surface water?
Respuesta
-
Variable composition
-
High turbidity
-
Low dissolved oxygen
-
Low iron and manganese
Pregunta 50
Pregunta
What are the typical duties of Water treatment Operators?
Respuesta
-
Operate process equipment
-
Calibrate and maintain chemical dosages and applications
-
Maintain accurate records of operational data
-
All of the above
Pregunta 51
Pregunta
Drinking water standards are usually categorized as being related to either _______ or ________.
Respuesta
-
Drinkable / Non-Drinkable
-
Surface supplies / Ground supplies
-
Health / Aesthetics
-
Taste / Odor
Pregunta 52
Pregunta
Which is not a layer in a stratified lake?
Respuesta
-
Hydrolimnion
-
Mesolimnion
-
Hypolimnion
-
Epilimnion
Pregunta 53
Pregunta
The number of water samples that must be collected each month in a water distribution system is based on?
Respuesta
-
The size of the population served
-
The type of treatment given to the water
-
The source of the water
-
The size of the water mains
Pregunta 54
Pregunta
A system whose number of customers exceeds 25 and are full time residents would be categorized as a?
Respuesta
-
Non-transient, non-community water system
-
Community public water system
-
Potable water system
-
Transient water system
Pregunta 55
Pregunta
As a relate of algae blooms, what happens to organic matter within water supply reservoirs
Respuesta
-
Constant
-
Decrease
-
Increase
-
Unpredictable
Pregunta 56
Pregunta
In determining the purity of a water sample, it is usually tested for the presence of coliform bacteria because ____________.
Respuesta
-
It can be detected using a microscope
-
It can be done in the field
-
It is one of the disease-bearing bacteria
-
Its presence may indicate that the water has been contaminated
Pregunta 57
Pregunta
What is an example of a non-transient non-community water system?
Respuesta
-
Campground
-
Restaurant
-
School
-
Service station
Pregunta 58
Pregunta
The EPA has imposed drinking water regulations that cover many contaminants including?
Respuesta
-
General physical and general mineral characteristics
-
Organics, inorganic, and volatile organic compounds (VOCs)
-
Bacteriological and radiological characteristics
-
All of the above
Pregunta 59
Pregunta
Water has its greatest density at?
Respuesta
-
40 degrees F
-
29 degrees F
-
39 degrees F
-
35 degrees F
Pregunta 60
Pregunta
Which is not a bacterium?
Respuesta
-
Total Coliform
-
Giardia
-
E. Coli
-
Legionella
Pregunta 61
Pregunta
How do nutrients cause water quality problems in domestic water supply
Respuesta
-
Cause pathogen regrowth
-
Coagulate suspended particles
-
Stimulate growth of algae
-
Toxic to aquatic life
Pregunta 62
Pregunta
Methemoglobinemia is caused by?
Respuesta
-
Cancer
-
Giardia
-
Flouride
-
Nitrate
Pregunta 63
Pregunta
The "Total Coliform Rule" of the SDWA regulations requires the result of coliform testing to be given as?
Respuesta
-
MPN
-
Colony forming units (CFUs)
-
mg/l
-
Presence / Absence
Pregunta 64
Pregunta
The first time a distribution water sample is returned with a "positive" test result, one should?
Respuesta
-
Take another sample from the same location and other designated locations
-
Notify the public to boil the water
-
Take a sample from the source
-
Increase the chlorine dosage
Pregunta 65
Pregunta
Water shed protection does not include protective measures against?
Respuesta
-
Boating
-
Ice cutting
-
Clear cutting
-
Landfills
Pregunta 66
Pregunta
The algae that causes most of the problems in Southern California's lakes is called?
Respuesta
-
Blue-Green
-
Green
-
Diatoms
-
Oscillatoria Curviceps
Pregunta 67
Pregunta
Which is not a characteristic of an Oligotrophic lake?
Respuesta
-
Low nutrient content
-
Sediment accumulation on lake bottom
-
Little planktonic growth
-
Few aquatic plants
Pregunta 68
Pregunta
Which activity is the US Environmental Protection Agency (USEPA) not responsible for?
Respuesta
-
Writing water legislation
-
Setting maximum contaminant levels
-
Delegating primary enforcement duties to states
-
Monitors state activities
Pregunta 69
Pregunta
What is a potential cause of objectionable tastes and odor in a domestic water supply
Respuesta
-
Algae blooms
-
Birds
-
Coliforms
-
Hardness
Pregunta 70
Pregunta
What is the primary purpose of vegetation removal in areas where new reservoirs are to be formed?
Respuesta
-
To control potential fire hazard during filling
-
To create additional storage space
-
To eliminate causes of accidents to recreational users
-
To reduce the organic and nutrient loading in the reservoir
Pregunta 71
Pregunta
A water system must give a Tier 1 public notice for?
Respuesta
-
A violation of MCL for VOC's and SOC's
-
A violation of Total Coliform MCL
-
A failure to monitor
-
Failing to comply with variance or exemption
Pregunta 72
Pregunta
Which outcome is not a result of de-stratification and re-aeration?
Respuesta
-
Improved water quality
-
Reduced anaerobic conditions
-
Reduced turn-over events
-
Reduced recreational value
Pregunta 73
Pregunta
The surface water treatment rule requires which removal rate for giardia?
Respuesta
-
2 log
-
4 log
-
1 log
-
3 log
Pregunta 74
Pregunta
The Interim Enhanced Surface Water Treatment Rule requires the maintenance of a minimum distribution chlorine residual of?
Respuesta
-
0.2 mg/l
-
1.0 mg/l
-
2.0 mg/l
-
4.0 mg/l
Pregunta 75
Pregunta
Which item did the 1974 Safe Drinking Water Act not establish?
Respuesta
-
Primary Drinking water regulations
-
Monitoring of chemical and microbiological contaminants
-
Enforceable standards
-
Standards for chemical analysis
Pregunta 76
Pregunta
If algae blooms are a problem the operating agency should develop capabilities for obtaining what types of information?
Respuesta
-
Extent of algae blooms
-
Taste and odor conditions related to algae blooms
-
Water quality problems that develop as a result of the blooms
-
All of the above
Pregunta 77
Pregunta
The effectiveness of copper sulfate treatment is affected by?
Respuesta
-
Alkalinity
-
Suspended matter
-
Temperature
-
All of the above
Pregunta 78
Pregunta
What problems may be created for operators by algae blooms in domestic water supply reservoirs?
Respuesta
-
Increased hardness
-
Decreased carbon dioxide
-
Staining of clothes
-
Increased pH which reduces chlorination efficiency
Pregunta 79
Pregunta
Additional bacteriological monitoring must be conducted?
Respuesta
-
After construction of wells
-
After main installation or repair
-
After construction, repair or maintenance of storage facilities
-
All of the above
Pregunta 80
Pregunta
Algae blooms in lakes and reservoirs can be controlled by?
Respuesta
-
Adding nutrients
-
Reducing oxygen
-
Chemical methods
-
Shortening filter runs
Pregunta 81
Pregunta
The area in a lake where there is sufficient light and nutrients to cause aquatic growth is called the?
Respuesta
-
Littoral zone
-
Limnetic zone
-
Terrestrial zone
-
Benthic zone
Pregunta 82
Pregunta
The inactivation of pathogenic organisms is called?
Respuesta
-
Sterilization
-
Oxidation
-
Pasteurization
-
Disinfection
Pregunta 83
Pregunta
A change in the pH in a reservoir between the daytime and the night time is cause by?
Respuesta
-
Algae consuming CO2 during the day and releasing CO2 at nigh
-
Algae releasing CO2 during the day and consuming CO2 at night
-
The overfeeding of coffer sulfate
-
The decomposition of inorganic material
Pregunta 84
Pregunta
Which is not a major contributor of Nitrate contamination in groundwater?
Respuesta
-
Leaching from septic systems
-
Underground fuel tanks
-
Agriculture fertilizers
-
Livestock activities
Pregunta 85
Pregunta
Alkalinity can be defined as?
Respuesta
-
A measurement of the basic state of water
-
A measurement of the ability of water to buffer against changes in pH
-
A measurement of the amount of acid in the water
-
A measurement of the amount of hydrogen ions in the water
Pregunta 86
Pregunta
A treatment plant can be defined as?
Respuesta
-
Any process or set of processes that effect the physical, chemical or biological characteristics of water
-
Only those processes that constitute conventional water treatment
-
A place where operators can catch up on their sleep
-
Any process or set of processes that effect the biological characteristics of water
Pregunta 87
Pregunta
State Drinking Water Regulations can be found in?
Respuesta
-
40 CFR part 141-149
-
Title 17 of the Code of State Regulations
-
Title 28 of the California Code of State Regulations
-
Title 22 of the California Code of State Regulations
Pregunta 88
Pregunta
Turbidity is the measurement of?
Respuesta
-
The concentration of bacteria in the water
-
The color of water measured in CFU
-
A measurement of inorganic material in the water
-
The amount of particulate material in the water
Pregunta 89
Pregunta
Compliance sampling must be reported to state by?
Respuesta
-
The 10th day of following month
-
Within 24 days
-
By the end of the month
-
Within 30 days
Pregunta 90
Pregunta
The zone in a lake that is considered "open water" is the?
Respuesta
-
Benthic Zone
-
Limentic Zone
-
Littoral Zone
-
Auto Zone
Pregunta 91
Pregunta
What is the volume in cubic feet of a circular clarifier 8 feet deep and 40 feet in diameter?
Respuesta
-
10,048 ft3
-
15,162 ft3
-
17,038 ft3
-
19,625 ft3
-
22,608 ft3
Pregunta 92
Pregunta
What is the volume in gallons of a rectangular settling basin 8 feet deep, 12 feet wide, 50 feet long?
Respuesta
-
47, 672 gallons
-
35, 904 gallons
-
43,084 gallons
-
44,808 gallons
-
4,800 gallons
Pregunta 93
Pregunta
How many pounds of copper sulfate will be needed to dose a reservoir with 0.6 mg/l copper? The reservoir volume is 20 million gallons. The copper sulfate is 25% copper. Assume the alkalinity of 40 mg/l.
Respuesta
-
100 lbs.
-
400 lbs.
-
800 lbs.
-
1,200 lbs.
-
1,334 lbs.
Pregunta 94
Pregunta
A reservoir has an average length of 1196 ft and an average width of 961 ft, the alkalinity is 175 mg/l. How many pounds of CuSO4 is needed?
Respuesta
-
6 lbs.
-
18 lbs.
-
20 lbs.
-
50 lbs.
-
143 lbs.
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