Distribution 1/2 Quiz 1

Descrição

Created September 2018
Joe Jorgensen
Quiz por Joe Jorgensen, atualizado more than 1 year ago
Joe Jorgensen
Criado por Joe Jorgensen aproximadamente 6 anos atrás
40
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Resumo de Recurso

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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