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