Quiz
Distribution 1/2 Quiz 1
Perguntas do quiz (94)
1Chief operators never use past records to adjust treatment processes.
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2All water comes in the form of precipitation.
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3Many organisms that cause disease in humans originate with the fecal discharges of infected individuals.
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4Rain water is pure
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5Groundwater is high in dissolved oxygen
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6The impact of a contaminant on surface water depends on the receiving water’s ability to assimilate contaminant
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7An Oligotrophic lake has low nutrient content.
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8reatment plant operators do not need to keep informed of local, state and federal regulations.
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9Local conditions have an influence on methods of managing lakes and reservoirs used for domestic water supplies.
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10Precipitation is high in bacterial count.
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11Color in water is objectionable mainly from the standpoint of health.
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12The specific disease-producing organisms present in water are hard to identify
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13Temperature has no impact on the effectiveness of copper sulfate
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14Excessive Nitrate in drinking water can lead to cancer
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15The Interim Enhanced Surface Water Treatment Rule does not address Cryptosporidium.
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16Measuring biological oxygen demand can be used to indirectly measure the organic content of the water
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17The State’s regulatory program can be less stringent than the US EPA’s program.
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18Primary drinking water standards are not mandatory standards.
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19Stratification develops when a warm layer of water overlies a colder layer
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20Under the Total Coliform Rule the MCL is violated if 5% of the samples collected in a month are total coliform positive.
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21Porosity is the volume of space in a given amount of material.
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22Drawdown is the water level in a well when the pump is on moving water.
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23Suspended matter has little or no effect on copper sulfate treatment.
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24There is no minimum requirement for distribution chlorine residual under the SWTR.
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25The turbidity requirement under the Interim Enhanced Surface Water Treatment rule is <0.3 NTU
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26The ________ is the continuous exchange of water between the earth and the atmosphere.
- AHydropneumatic cycle
- BLife cycle
- CHydraulic gradient
- DHydrologic cycle
27What is the purpose of a water treatment plant?
- ATo produce safe and pleasant drinking water
- BTo produce water containing toxic substances
- CTo produce water transmitting disease-causing organisms
- DTo produce water with agreeable taste, odor or appearance
28What does the size of a water treatment plant depend upon?
- AThe water supply
- BImpurities in the water
- CRegulatory Factors
- DAll of the above
29All of the following factors influence the concentration of copper sulfate needed for effective control of algae blooms except?
- AAlkalinity
- BWater pH
- CSeptic tanks
- DWater temperature
30What is the purpose of the chemical coagulation process?
- ACause very fine particles to clump together into larger particles
- BFilter out remaining suspended particles
- CKill disease-causing organisms
- DSettle out larger suspended particles
31Which constituent is not a chemical contaminant?
- AInorganic
- BVolatile Organic
- CSynthetic Organic
- DBacteria
32A water-bearing geological formation is referred to as a(n)?
- AAquifer
- BAquarium
- CWater table
- DBed rock
33A 4 log removal rate is equal to what percent?
- A90
- B99
- C99.9
- D99.99
34Whenever a chemical algae control program is started, when should monitoring be performed?
- ABefore, during and after use of chemicals
- BBefore visits by regulatory agencies
- CWhen staff are available
- DWhenever results are needed for analysis
35Plants give off water vapor to the atmosphere through a process called?
- APercolation
- BEvaporation
- CTranspiration
- DAll of the Above
36Organic matter combined with chlorine can create?
- ASeptic Conditions
- BTrihalomethane's
- CAcidic water unfit for human consumption
- DLegionella
37Which of the following does not influence surface runoff?
- ARainfall intensity
- BSoil composition
- CMineral content of the water
- DVegetation covering the ground
38Surface water runoff such as creeks and rivers collect water from an area of land towards one primary water course and is known as the?
- AContributory
- BPooling area
- CWatershed
- DCanyon
39When using a river or stream as a water supply, what is a major concern?
- ADownstream usage
- BSpawning conditions
- CGroundwater quality
- DUpstream conditions
40The area outward from the center of a well that is affected during pumping is called the?
- ARadius of influence
- BZone of saturation
- CWater table
- DImpervious section
41The Surface Water Treatment Rule requires the ________ and ________ of Giardia
- ACoagulation and sedimentation
- BRemoval and inactivation
- CDisinfection and flocculation
- DCoagulation and disinfection
42A direct filtration water treatment plant does not include?
- ACoagulation
- BSedimentation
- CFiltration
- DFlocculation
43What is the major type of problem caused by waste water contamination of a domestic water supply?
- ALoss of reservoir capacity
- BScouring
- CSiltration
- DNutrient loading
44Why must operators constantly monitor raw water quality in a river?
- ATo detect sudden pollutant loads
- BTo inform the public in Consumer Confidence Reports
- CTo justify lab workload and budget
- DTo notify wastewater treatment plant operators
45What are the primary responsibilities of Water Treatment Operators?
- AProduce pleasant drinking water
- BProduce safe drinking water
- CProtect health and well-being of the community
- DAll of the above
46Which is not a trophic state of a lake?
- AOligotrophic
- BEndotrophic
- CMesotrophic
- DEutrophic
47A disinfected water supply is one in which
- AAll bacteria and viruses have been sterilized
- BAll algae have been destroyed
- CAll pathogenic organisms have been inactivated or destroyed
- DAll of the above
48Which of the following is not considered a point source discharge?
- AWastewater discharge
- BMine drainage
- CStorm water runoff
- DIndustrial discharges
49Which of the following is not a characteristic of Surface water?
- AVariable composition
- BHigh turbidity
- CLow dissolved oxygen
- DLow iron and manganese
50What are the typical duties of Water treatment Operators?
- AOperate process equipment
- BCalibrate and maintain chemical dosages and applications
- CMaintain accurate records of operational data
- DAll of the above
51Drinking water standards are usually categorized as being related to either _______ or ________.
- ADrinkable / Non-Drinkable
- BSurface supplies / Ground supplies
- CHealth / Aesthetics
- DTaste / Odor
52Which is not a layer in a stratified lake?
- AHydrolimnion
- BMesolimnion
- CHypolimnion
- DEpilimnion
53The number of water samples that must be collected each month in a water distribution system is based on?
- AThe size of the population served
- BThe type of treatment given to the water
- CThe source of the water
- DThe size of the water mains
54A system whose number of customers exceeds 25 and are full time residents would be categorized as a?
- ANon-transient, non-community water system
- BCommunity public water system
- CPotable water system
- DTransient water system
55As a relate of algae blooms, what happens to organic matter within water supply reservoirs
- AConstant
- BDecrease
- CIncrease
- DUnpredictable
56In determining the purity of a water sample, it is usually tested for the presence of coliform bacteria because ____________.
- AIt can be detected using a microscope
- BIt can be done in the field
- CIt is one of the disease-bearing bacteria
- DIts presence may indicate that the water has been contaminated
57What is an example of a non-transient non-community water system?
- ACampground
- BRestaurant
- CSchool
- DService station
58The EPA has imposed drinking water regulations that cover many contaminants including?
- AGeneral physical and general mineral characteristics
- BOrganics, inorganic, and volatile organic compounds (VOCs)
- CBacteriological and radiological characteristics
- DAll of the above
59Water has its greatest density at?
- A40 degrees F
- B29 degrees F
- C39 degrees F
- D35 degrees F
60Which is not a bacterium?
- ATotal Coliform
- BGiardia
- CE. Coli
- DLegionella
61How do nutrients cause water quality problems in domestic water supply
- ACause pathogen regrowth
- BCoagulate suspended particles
- CStimulate growth of algae
- DToxic to aquatic life
62Methemoglobinemia is caused by?
- ACancer
- BGiardia
- CFlouride
- DNitrate
63The "Total Coliform Rule" of the SDWA regulations requires the result of coliform testing to be given as?
- AMPN
- BColony forming units (CFUs)
- Cmg/l
- DPresence / Absence
64The first time a distribution water sample is returned with a "positive" test result, one should?
- ATake another sample from the same location and other designated locations
- BNotify the public to boil the water
- CTake a sample from the source
- DIncrease the chlorine dosage
65Water shed protection does not include protective measures against?
- ABoating
- BIce cutting
- CClear cutting
- DLandfills
66The algae that causes most of the problems in Southern California's lakes is called?
- ABlue-Green
- BGreen
- CDiatoms
- DOscillatoria Curviceps
67Which is not a characteristic of an Oligotrophic lake?
- ALow nutrient content
- BSediment accumulation on lake bottom
- CLittle planktonic growth
- DFew aquatic plants
68Which activity is the US Environmental Protection Agency (USEPA) not responsible for?
- AWriting water legislation
- BSetting maximum contaminant levels
- CDelegating primary enforcement duties to states
- DMonitors state activities
69What is a potential cause of objectionable tastes and odor in a domestic water supply
- AAlgae blooms
- BBirds
- CColiforms
- DHardness
70What is the primary purpose of vegetation removal in areas where new reservoirs are to be formed?
- ATo control potential fire hazard during filling
- BTo create additional storage space
- CTo eliminate causes of accidents to recreational users
- DTo reduce the organic and nutrient loading in the reservoir
71A water system must give a Tier 1 public notice for?
- AA violation of MCL for VOC's and SOC's
- BA violation of Total Coliform MCL
- CA failure to monitor
- DFailing to comply with variance or exemption
72Which outcome is not a result of de-stratification and re-aeration?
- AImproved water quality
- BReduced anaerobic conditions
- CReduced turn-over events
- DReduced recreational value
73The surface water treatment rule requires which removal rate for giardia?
- A2 log
- B4 log
- C1 log
- D3 log
74The Interim Enhanced Surface Water Treatment Rule requires the maintenance of a minimum distribution chlorine residual of?
- A0.2 mg/l
- B1.0 mg/l
- C2.0 mg/l
- D4.0 mg/l
75Which item did the 1974 Safe Drinking Water Act not establish?
- APrimary Drinking water regulations
- BMonitoring of chemical and microbiological contaminants
- CEnforceable standards
- DStandards for chemical analysis
76If algae blooms are a problem the operating agency should develop capabilities for obtaining what types of information?
- AExtent of algae blooms
- BTaste and odor conditions related to algae blooms
- CWater quality problems that develop as a result of the blooms
- DAll of the above
77The effectiveness of copper sulfate treatment is affected by?
- AAlkalinity
- BSuspended matter
- CTemperature
- DAll of the above
78What problems may be created for operators by algae blooms in domestic water supply reservoirs?
- AIncreased hardness
- BDecreased carbon dioxide
- CStaining of clothes
- DIncreased pH which reduces chlorination efficiency
79Additional bacteriological monitoring must be conducted?
- AAfter construction of wells
- BAfter main installation or repair
- CAfter construction, repair or maintenance of storage facilities
- DAll of the above
80Algae blooms in lakes and reservoirs can be controlled by?
- AAdding nutrients
- BReducing oxygen
- CChemical methods
- DShortening filter runs
81The area in a lake where there is sufficient light and nutrients to cause aquatic growth is called the?
- ALittoral zone
- BLimnetic zone
- CTerrestrial zone
- DBenthic zone
82The inactivation of pathogenic organisms is called?
- ASterilization
- BOxidation
- CPasteurization
- DDisinfection
83A change in the pH in a reservoir between the daytime and the night time is cause by?
- AAlgae consuming CO2 during the day and releasing CO2 at nigh
- BAlgae releasing CO2 during the day and consuming CO2 at night
- CThe overfeeding of coffer sulfate
- DThe decomposition of inorganic material
84Which is not a major contributor of Nitrate contamination in groundwater?
- ALeaching from septic systems
- BUnderground fuel tanks
- CAgriculture fertilizers
- DLivestock activities
85Alkalinity can be defined as?
- AA measurement of the basic state of water
- BA measurement of the ability of water to buffer against changes in pH
- CA measurement of the amount of acid in the water
- DA measurement of the amount of hydrogen ions in the water
86A treatment plant can be defined as?
- AAny process or set of processes that effect the physical, chemical or biological characteristics of water
- BOnly those processes that constitute conventional water treatment
- CA place where operators can catch up on their sleep
- DAny process or set of processes that effect the biological characteristics of water
87State Drinking Water Regulations can be found in?
- A40 CFR part 141-149
- BTitle 17 of the Code of State Regulations
- CTitle 28 of the California Code of State Regulations
- DTitle 22 of the California Code of State Regulations
88Turbidity is the measurement of?
- AThe concentration of bacteria in the water
- BThe color of water measured in CFU
- CA measurement of inorganic material in the water
- DThe amount of particulate material in the water
89Compliance sampling must be reported to state by?
- AThe 10th day of following month
- BWithin 24 days
- CBy the end of the month
- DWithin 30 days
90The zone in a lake that is considered "open water" is the?
- ABenthic Zone
- BLimentic Zone
- CLittoral Zone
- DAuto Zone
91What is the volume in cubic feet of a circular clarifier 8 feet deep and 40 feet in diameter?
- A10,048 ft3
- B15,162 ft3
- C17,038 ft3
- D19,625 ft3
- E22,608 ft3
92What is the volume in gallons of a rectangular settling basin 8 feet deep, 12 feet wide, 50 feet long?
- A47, 672 gallons
- B35, 904 gallons
- C43,084 gallons
- D44,808 gallons
- E4,800 gallons
93How 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.
- A100 lbs.
- B400 lbs.
- C800 lbs.
- D1,200 lbs.
- E1,334 lbs.
94A 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?
- A6 lbs.
- B18 lbs.
- C20 lbs.
- D50 lbs.
- E143 lbs.
Informações
- Descrição
- Created September 2018
- Autor
- Joe Jorgensen
- Idioma
- English
- Visualizações
- 69
- Etiquetas
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