Distribution 1/2 Quiz 1

Beschreibung

Created September 2018
Joe Jorgensen
Quiz von Joe Jorgensen, aktualisiert more than 1 year ago
Joe Jorgensen
Erstellt von Joe Jorgensen vor etwa 6 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Chief operators never use past records to adjust treatment processes.
Antworten
  • True
  • False

Frage 2

Frage
All water comes in the form of precipitation.
Antworten
  • True
  • False

Frage 3

Frage
Many organisms that cause disease in humans originate with the fecal discharges of infected individuals.
Antworten
  • True
  • False

Frage 4

Frage
Rain water is pure
Antworten
  • True
  • False

Frage 5

Frage
Groundwater is high in dissolved oxygen
Antworten
  • True
  • False

Frage 6

Frage
The impact of a contaminant on surface water depends on the receiving water’s ability to assimilate contaminant
Antworten
  • True
  • False

Frage 7

Frage
An Oligotrophic lake has low nutrient content.
Antworten
  • True
  • False

Frage 8

Frage
reatment plant operators do not need to keep informed of local, state and federal regulations.
Antworten
  • True
  • False

Frage 9

Frage
Local conditions have an influence on methods of managing lakes and reservoirs used for domestic water supplies.
Antworten
  • True
  • False

Frage 10

Frage
Precipitation is high in bacterial count.
Antworten
  • True
  • False

Frage 11

Frage
Color in water is objectionable mainly from the standpoint of health.
Antworten
  • True
  • False

Frage 12

Frage
The specific disease-producing organisms present in water are hard to identify
Antworten
  • True
  • False

Frage 13

Frage
Temperature has no impact on the effectiveness of copper sulfate
Antworten
  • True
  • False

Frage 14

Frage
Excessive Nitrate in drinking water can lead to cancer
Antworten
  • True
  • False

Frage 15

Frage
The Interim Enhanced Surface Water Treatment Rule does not address Cryptosporidium.
Antworten
  • True
  • False

Frage 16

Frage
Measuring biological oxygen demand can be used to indirectly measure the organic content of the water
Antworten
  • True
  • False

Frage 17

Frage
The State’s regulatory program can be less stringent than the US EPA’s program.
Antworten
  • True
  • False

Frage 18

Frage
Primary drinking water standards are not mandatory standards.
Antworten
  • True
  • False

Frage 19

Frage
Stratification develops when a warm layer of water overlies a colder layer
Antworten
  • True
  • False

Frage 20

Frage
Under the Total Coliform Rule the MCL is violated if 5% of the samples collected in a month are total coliform positive.
Antworten
  • True
  • False

Frage 21

Frage
Porosity is the volume of space in a given amount of material.
Antworten
  • True
  • False

Frage 22

Frage
Drawdown is the water level in a well when the pump is on moving water.
Antworten
  • True
  • False

Frage 23

Frage
Suspended matter has little or no effect on copper sulfate treatment.
Antworten
  • True
  • False

Frage 24

Frage
There is no minimum requirement for distribution chlorine residual under the SWTR.
Antworten
  • True
  • False

Frage 25

Frage
The turbidity requirement under the Interim Enhanced Surface Water Treatment rule is <0.3 NTU
Antworten
  • True
  • False

Frage 26

Frage
The ________ is the continuous exchange of water between the earth and the atmosphere.
Antworten
  • Hydropneumatic cycle
  • Life cycle
  • Hydraulic gradient
  • Hydrologic cycle

Frage 27

Frage
What is the purpose of a water treatment plant?
Antworten
  • 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

Frage 28

Frage
What does the size of a water treatment plant depend upon?
Antworten
  • The water supply
  • Impurities in the water
  • Regulatory Factors
  • All of the above

Frage 29

Frage
All of the following factors influence the concentration of copper sulfate needed for effective control of algae blooms except?
Antworten
  • Alkalinity
  • Water pH
  • Septic tanks
  • Water temperature

Frage 30

Frage
What is the purpose of the chemical coagulation process?
Antworten
  • Cause very fine particles to clump together into larger particles
  • Filter out remaining suspended particles
  • Kill disease-causing organisms
  • Settle out larger suspended particles

Frage 31

Frage
Which constituent is not a chemical contaminant?
Antworten
  • Inorganic
  • Volatile Organic
  • Synthetic Organic
  • Bacteria

Frage 32

Frage
A water-bearing geological formation is referred to as a(n)?
Antworten
  • Aquifer
  • Aquarium
  • Water table
  • Bed rock

Frage 33

Frage
A 4 log removal rate is equal to what percent?
Antworten
  • 90
  • 99
  • 99.9
  • 99.99

Frage 34

Frage
Whenever a chemical algae control program is started, when should monitoring be performed?
Antworten
  • Before, during and after use of chemicals
  • Before visits by regulatory agencies
  • When staff are available
  • Whenever results are needed for analysis

Frage 35

Frage
Plants give off water vapor to the atmosphere through a process called?
Antworten
  • Percolation
  • Evaporation
  • Transpiration
  • All of the Above

Frage 36

Frage
Organic matter combined with chlorine can create?
Antworten
  • Septic Conditions
  • Trihalomethane's
  • Acidic water unfit for human consumption
  • Legionella

Frage 37

Frage
Which of the following does not influence surface runoff?
Antworten
  • Rainfall intensity
  • Soil composition
  • Mineral content of the water
  • Vegetation covering the ground

Frage 38

Frage
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?
Antworten
  • Contributory
  • Pooling area
  • Watershed
  • Canyon

Frage 39

Frage
When using a river or stream as a water supply, what is a major concern?
Antworten
  • Downstream usage
  • Spawning conditions
  • Groundwater quality
  • Upstream conditions

Frage 40

Frage
The area outward from the center of a well that is affected during pumping is called the?
Antworten
  • Radius of influence
  • Zone of saturation
  • Water table
  • Impervious section

Frage 41

Frage
The Surface Water Treatment Rule requires the ________ and ________ of Giardia
Antworten
  • Coagulation and sedimentation
  • Removal and inactivation
  • Disinfection and flocculation
  • Coagulation and disinfection

Frage 42

Frage
A direct filtration water treatment plant does not include?
Antworten
  • Coagulation
  • Sedimentation
  • Filtration
  • Flocculation

Frage 43

Frage
What is the major type of problem caused by waste water contamination of a domestic water supply?
Antworten
  • Loss of reservoir capacity
  • Scouring
  • Siltration
  • Nutrient loading

Frage 44

Frage
Why must operators constantly monitor raw water quality in a river?
Antworten
  • 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

Frage 45

Frage
What are the primary responsibilities of Water Treatment Operators?
Antworten
  • Produce pleasant drinking water
  • Produce safe drinking water
  • Protect health and well-being of the community
  • All of the above

Frage 46

Frage
Which is not a trophic state of a lake?
Antworten
  • Oligotrophic
  • Endotrophic
  • Mesotrophic
  • Eutrophic

Frage 47

Frage
A disinfected water supply is one in which
Antworten
  • All bacteria and viruses have been sterilized
  • All algae have been destroyed
  • All pathogenic organisms have been inactivated or destroyed
  • All of the above

Frage 48

Frage
Which of the following is not considered a point source discharge?
Antworten
  • Wastewater discharge
  • Mine drainage
  • Storm water runoff
  • Industrial discharges

Frage 49

Frage
Which of the following is not a characteristic of Surface water?
Antworten
  • Variable composition
  • High turbidity
  • Low dissolved oxygen
  • Low iron and manganese

Frage 50

Frage
What are the typical duties of Water treatment Operators?
Antworten
  • Operate process equipment
  • Calibrate and maintain chemical dosages and applications
  • Maintain accurate records of operational data
  • All of the above

Frage 51

Frage
Drinking water standards are usually categorized as being related to either _______ or ________.
Antworten
  • Drinkable / Non-Drinkable
  • Surface supplies / Ground supplies
  • Health / Aesthetics
  • Taste / Odor

Frage 52

Frage
Which is not a layer in a stratified lake?
Antworten
  • Hydrolimnion
  • Mesolimnion
  • Hypolimnion
  • Epilimnion

Frage 53

Frage
The number of water samples that must be collected each month in a water distribution system is based on?
Antworten
  • 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

Frage 54

Frage
A system whose number of customers exceeds 25 and are full time residents would be categorized as a?
Antworten
  • Non-transient, non-community water system
  • Community public water system
  • Potable water system
  • Transient water system

Frage 55

Frage
As a relate of algae blooms, what happens to organic matter within water supply reservoirs
Antworten
  • Constant
  • Decrease
  • Increase
  • Unpredictable

Frage 56

Frage
In determining the purity of a water sample, it is usually tested for the presence of coliform bacteria because ____________.
Antworten
  • 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

Frage 57

Frage
What is an example of a non-transient non-community water system?
Antworten
  • Campground
  • Restaurant
  • School
  • Service station

Frage 58

Frage
The EPA has imposed drinking water regulations that cover many contaminants including?
Antworten
  • General physical and general mineral characteristics
  • Organics, inorganic, and volatile organic compounds (VOCs)
  • Bacteriological and radiological characteristics
  • All of the above

Frage 59

Frage
Water has its greatest density at?
Antworten
  • 40 degrees F
  • 29 degrees F
  • 39 degrees F
  • 35 degrees F

Frage 60

Frage
Which is not a bacterium?
Antworten
  • Total Coliform
  • Giardia
  • E. Coli
  • Legionella

Frage 61

Frage
How do nutrients cause water quality problems in domestic water supply
Antworten
  • Cause pathogen regrowth
  • Coagulate suspended particles
  • Stimulate growth of algae
  • Toxic to aquatic life

Frage 62

Frage
Methemoglobinemia is caused by?
Antworten
  • Cancer
  • Giardia
  • Flouride
  • Nitrate

Frage 63

Frage
The "Total Coliform Rule" of the SDWA regulations requires the result of coliform testing to be given as?
Antworten
  • MPN
  • Colony forming units (CFUs)
  • mg/l
  • Presence / Absence

Frage 64

Frage
The first time a distribution water sample is returned with a "positive" test result, one should?
Antworten
  • 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

Frage 65

Frage
Water shed protection does not include protective measures against?
Antworten
  • Boating
  • Ice cutting
  • Clear cutting
  • Landfills

Frage 66

Frage
The algae that causes most of the problems in Southern California's lakes is called?
Antworten
  • Blue-Green
  • Green
  • Diatoms
  • Oscillatoria Curviceps

Frage 67

Frage
Which is not a characteristic of an Oligotrophic lake?
Antworten
  • Low nutrient content
  • Sediment accumulation on lake bottom
  • Little planktonic growth
  • Few aquatic plants

Frage 68

Frage
Which activity is the US Environmental Protection Agency (USEPA) not responsible for?
Antworten
  • Writing water legislation
  • Setting maximum contaminant levels
  • Delegating primary enforcement duties to states
  • Monitors state activities

Frage 69

Frage
What is a potential cause of objectionable tastes and odor in a domestic water supply
Antworten
  • Algae blooms
  • Birds
  • Coliforms
  • Hardness

Frage 70

Frage
What is the primary purpose of vegetation removal in areas where new reservoirs are to be formed?
Antworten
  • 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

Frage 71

Frage
A water system must give a Tier 1 public notice for?
Antworten
  • 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

Frage 72

Frage
Which outcome is not a result of de-stratification and re-aeration?
Antworten
  • Improved water quality
  • Reduced anaerobic conditions
  • Reduced turn-over events
  • Reduced recreational value

Frage 73

Frage
The surface water treatment rule requires which removal rate for giardia?
Antworten
  • 2 log
  • 4 log
  • 1 log
  • 3 log

Frage 74

Frage
The Interim Enhanced Surface Water Treatment Rule requires the maintenance of a minimum distribution chlorine residual of?
Antworten
  • 0.2 mg/l
  • 1.0 mg/l
  • 2.0 mg/l
  • 4.0 mg/l

Frage 75

Frage
Which item did the 1974 Safe Drinking Water Act not establish?
Antworten
  • Primary Drinking water regulations
  • Monitoring of chemical and microbiological contaminants
  • Enforceable standards
  • Standards for chemical analysis

Frage 76

Frage
If algae blooms are a problem the operating agency should develop capabilities for obtaining what types of information?
Antworten
  • 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

Frage 77

Frage
The effectiveness of copper sulfate treatment is affected by?
Antworten
  • Alkalinity
  • Suspended matter
  • Temperature
  • All of the above

Frage 78

Frage
What problems may be created for operators by algae blooms in domestic water supply reservoirs?
Antworten
  • Increased hardness
  • Decreased carbon dioxide
  • Staining of clothes
  • Increased pH which reduces chlorination efficiency

Frage 79

Frage
Additional bacteriological monitoring must be conducted?
Antworten
  • After construction of wells
  • After main installation or repair
  • After construction, repair or maintenance of storage facilities
  • All of the above

Frage 80

Frage
Algae blooms in lakes and reservoirs can be controlled by?
Antworten
  • Adding nutrients
  • Reducing oxygen
  • Chemical methods
  • Shortening filter runs

Frage 81

Frage
The area in a lake where there is sufficient light and nutrients to cause aquatic growth is called the?
Antworten
  • Littoral zone
  • Limnetic zone
  • Terrestrial zone
  • Benthic zone

Frage 82

Frage
The inactivation of pathogenic organisms is called?
Antworten
  • Sterilization
  • Oxidation
  • Pasteurization
  • Disinfection

Frage 83

Frage
A change in the pH in a reservoir between the daytime and the night time is cause by?
Antworten
  • 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

Frage 84

Frage
Which is not a major contributor of Nitrate contamination in groundwater?
Antworten
  • Leaching from septic systems
  • Underground fuel tanks
  • Agriculture fertilizers
  • Livestock activities

Frage 85

Frage
Alkalinity can be defined as?
Antworten
  • 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

Frage 86

Frage
A treatment plant can be defined as?
Antworten
  • 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

Frage 87

Frage
State Drinking Water Regulations can be found in?
Antworten
  • 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

Frage 88

Frage
Turbidity is the measurement of?
Antworten
  • 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

Frage 89

Frage
Compliance sampling must be reported to state by?
Antworten
  • The 10th day of following month
  • Within 24 days
  • By the end of the month
  • Within 30 days

Frage 90

Frage
The zone in a lake that is considered "open water" is the?
Antworten
  • Benthic Zone
  • Limentic Zone
  • Littoral Zone
  • Auto Zone

Frage 91

Frage
What is the volume in cubic feet of a circular clarifier 8 feet deep and 40 feet in diameter?
Antworten
  • 10,048 ft3
  • 15,162 ft3
  • 17,038 ft3
  • 19,625 ft3
  • 22,608 ft3

Frage 92

Frage
What is the volume in gallons of a rectangular settling basin 8 feet deep, 12 feet wide, 50 feet long?
Antworten
  • 47, 672 gallons
  • 35, 904 gallons
  • 43,084 gallons
  • 44,808 gallons
  • 4,800 gallons

Frage 93

Frage
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.
Antworten
  • 100 lbs.
  • 400 lbs.
  • 800 lbs.
  • 1,200 lbs.
  • 1,334 lbs.

Frage 94

Frage
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?
Antworten
  • 6 lbs.
  • 18 lbs.
  • 20 lbs.
  • 50 lbs.
  • 143 lbs.
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