CDC 4b051 Vol 5
Edit code 03
4B051
- 1.
What ground characteristics allow water to move freely?
- A.
Caliche rock layers
- B.
Clay and rock layers
- C.
Sand and gravel layers
- D.
Crystalline rock layers
Correct Answer
C. Sand and gravel layersExplanation
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- 2.
Groundwater is stored in
- A.
Lakes, streams, and oceans
- B.
Snow, glaciers, and rivers
- C.
Unconfined and confined zones
- D.
Unsaturated and saturated zones
Correct Answer
D. Unsaturated and saturated zonesExplanation
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- 3.
What is one reason ground water sources are generally preferred over surface water sources for drinking?
- A.
Groundwater has a low turbidity
- B.
Groundwater has a variable supply
- C.
Groundwater has high calcium levels
- D.
It is easy to determine the quantity of groundwater
Correct Answer
A. Groundwater has a low turbidityExplanation
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- 4.
What characteristic of drinking water must be controlled to prevent corrosion and the precipitation of salts in boilers?
- A.
Acidity
- B.
Alkalinity
- C.
Hardness
- D.
Dissolved gases
Correct Answer
B. AlkalinityExplanation
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- 5.
What dissolved gas needs to be at an adequate level to prevent drinking water from tasting flat?
- A.
Oxygen
- B.
Carbon dioxide
- C.
Hydrogen sulfide
- D.
Carbon monoxide
Correct Answer
A. OxygenExplanation
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- 6.
Which Environmental Protection Agency (EPA) drinking water standard is a guideline that applies to the aesthetic aspects of drinking water?
- A.
Quality
- B.
Primacy
- C.
Primary
- D.
Secondary
Correct Answer
D. SecondaryExplanation
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- 7.
What law passed by congress established a Federal program to monitor and increase the safety of all publically and commercially supplied drinking water?
- A.
Safe Drinking Water Act
- B.
Well Head Protection Program
- C.
Safe Drinking Water Surveillance Program
- D.
National Primary Drinking Water Regulation
Correct Answer
A. Safe Drinking Water ActExplanation
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- 8.
What is the minimum number service connections required for a system to be classified as a Public Water System?
- A.
10
- B.
15
- C.
25
- D.
50
Correct Answer
B. 15Explanation
1-12Rate this question:
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- 9.
Which Public Water System Classifications will typically have less stringent water monitoring requirements?
- A.
Transient Non-Community Water System (TNCWS).
- B.
Non-Transient Non-Community Water System (NTNCWS).
- C.
Community Water System (CWS).
- D.
None, they all have the same monitoring requirements
Correct Answer
A. Transient Non-Community Water System (TNCWS).Explanation
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- 10.
Which is not a major step of conventional filtration?
- A.
Coagulation.
- B.
Flocculation
- C.
Sedimentation
- D.
Disinfection
Correct Answer
D. DisinfectionExplanation
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- 11.
Which is the most common type of water treatment used at AF installations?
- A.
Aeration
- B.
Fluoridation
- C.
Scale Control
- D.
Carbon Adsorption
Correct Answer
B. FluoridationExplanation
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- 12.
What method of chlorination may be used if the pipes and components are kept clean and dry during the construction?
- A.
Slug
- B.
Tablet
- C.
Swabbing
- D.
Continuous
Correct Answer
B. TabletExplanation
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- 13.
How often is the Water System Backflow Prevention/Cross-Connection Survey accomplished on all facilities?
- A.
Annually
- B.
Semi-annually
- C.
Every two years
- D.
Every five years
Correct Answer
D. Every five yearsExplanation
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- 14.
What hazard classification for a cross-connection is also defined as contamination?
- A.
Low
- B.
High
- C.
Routine
- D.
Potential
Correct Answer
B. HighExplanation
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- 15.
What hazard classification for a cross-connection is also defined as pollution?
- A.
Low
- B.
High
- C.
Routine
- D.
Potential
Correct Answer
A. LowExplanation
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- 16.
What is the required frequency for completing a sanitary survey for community water system?
- A.
Annually
- B.
2 years
- C.
3 years
- D.
5 years
Correct Answer
C. 3 yearsExplanation
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- 17.
What governmental bureau requires that sanitary surveys be conducted for water systems and defines the specific critical elements to be evaluated?
- A.
US Department of Agriculture
- B.
US Environmental Protection Agency
- C.
Centers for Disease Control and Prevention
- D.
Occupational Safety and Health Administration
Correct Answer
B. US Environmental Protection AgencyExplanation
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- 18.
Which phase of a base sanitary survey should generate a list of items to check in the field?
- A.
Planning
- B.
Reporting
- C.
Follow-up
- D.
Conducting
Correct Answer
A. PlanningExplanation
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- 19.
Which military field water standard is designed to prevent acute illness?
- A.
Short-term potability standards
- B.
Long-term potability standards
- C.
Military exposure guidelines
- D.
Environmental Protection Agency (EPA) maximum contaminant levels
Correct Answer
A. Short-term potability standardsExplanation
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- 20.
What has the purpose to assist commanders in reducing water-related risks from all causes to personnel and mission-essential operations to an acceptable level?
- A.
Site examination
- B.
Base Sanitary Survey
- C.
Aircraft Watering Point Survey
- D.
Water Vulnerability Assessment
Correct Answer
D. Water Vulnerability AssessmentExplanation
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- 21.
What do terrorists and militant groups consider an Air Force potable water supply?
- A.
Threat
- B.
Security risk
- C.
Credible target
- D.
Security challenge
Correct Answer
C. Credible targetExplanation
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- 22.
How often should water vulnerability assessments be accomplished/updated at garrison level installations?
- A.
Annually
- B.
Semi-annually
- C.
Every ten years
- D.
During each rotation
Correct Answer
A. AnnuallyExplanation
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- 23.
Which interview questionnaire is designed to be the initial checklist used when conducting the joint interview of Air Force system owner/operator stakeholders?
- A.
Water Purveyor
- B.
Water Security and Survivability
- C.
Base Potable Water System Overview
- D.
Anti-Terrorism Program Review for Water
Correct Answer
C. Base Potable Water System OverviewExplanation
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- 24.
During water vulnerability assessment, your focus is on field activities and the gathering information necessary to characterize vulnerability, risk, and control options. What phase of the assessment are you performing?
- A.
Follow-up
- B.
Pre-assessment
- C.
Information gathering
- D.
Information processing
Correct Answer
C. Information gatheringExplanation
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- 25.
How often must Bioenvironmental Engineering (BE) perform a sanitary survey of an aircraft watering point?
- A.
Weekly
- B.
Monthly
- C.
Annually
- D.
Every ten years
Correct Answer
C. AnnuallyExplanation
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- 26.
How often must Bioenvironmental Engineering (BE) sample trucks that transport potable water to aircraft?
- A.
Two trucks per month
- B.
All trucks every month
- C.
One truck per week, all trucks every month
- D.
One truck per month, all trucks every calendar quarter
Correct Answer
D. One truck per month, all trucks every calendar quarterExplanation
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- 27.
At a minimum, how often does Bioenvironmental Engineering (BE) collect bacteriological samples from the aircraft watering point source?
- A.
Weekly
- B.
Monthly
- C.
Quarterly
- D.
Annually
Correct Answer
B. MonthlyExplanation
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- 28.
After meeting all the Tier 1 public notification requirements, how long does the base have to consult with the state or federal Environmental Protection Agency (EPA)?
- A.
12 hours
- B.
24 hours
- C.
10 days
- D.
30 days
Correct Answer
B. 24 hoursExplanation
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- 29.
Which should not be included in the consumer confidence report?
- A.
The likely source of contaminant in the local drinking water supply
- B.
The water system’s compliance with other drinking water-related rules
- C.
The formulas used to reach the assessment results on local contamination
- D.
How to get a copy of the water system’s complete source water assessment
Correct Answer
C. The formulas used to reach the assessment results on local contaminationExplanation
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- 30.
Which is one of the organizations that performs surveys of natural bathing areas?
- A.
Services
- B.
Security forces
- C.
Fire Department
- D.
Environmental flight
Correct Answer
A. ServicesExplanation
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- 31.
The swimming pool manager or lifeguard measures pH at least once every?
- A.
Hour
- B.
2 hours
- C.
3 hours
- D.
Day
Correct Answer
B. 2 hoursExplanation
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- 32.
In ventilation work, what pressure is exerted outward against the interior surface of an enclosure?
- A.
Positive static.
- B.
Negative static
- C.
Positive velocity
- D.
Negative velocity
Correct Answer
A. Positive static.Explanation
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- 33.
Friction losses in a ventilation system can be reduced by increasing the
- A.
Hood size
- B.
Duct length
- C.
Duct velocity
- D.
Duct diameter
Correct Answer
D. Duct diameterExplanation
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- 34.
Where should you expect the strongest static pressure to be found in a ventilation system?
- A.
Within the hood
- B.
At the hood throat
- C.
At the inlet to the fan
- D.
At the outlet to the fan
Correct Answer
C. At the inlet to the fanExplanation
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- 35.
Which type of velocity refers to the speed of air at a point in front of a hood that is needed to pull contaminants into the hood?
- A.
Face velocity
- B.
Duct velocity
- C.
Capture velocity
- D.
Transport velocity
Correct Answer
C. Capture velocityExplanation
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- 36.
What are two parameters at a given point in ventilation systems that are needed to calculate the air flow volume?
- A.
Area and pressure
- B.
Area and velocity
- C.
Velocity and pressure
- D.
Diameter and velocity
Correct Answer
B. Area and velocityExplanation
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- 37.
Areas of ducts and hoods must be expressed in
- A.
Inches
- B.
Linear feet
- C.
Square feet
- D.
Cubic feet per minute
Correct Answer
C. Square feetExplanation
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- 38.
What circumstance would result in a high K factor?
- A.
Adequate mixing of air
- B.
Higher contaminant toxicities
- C.
An even evolution of contaminant
- D.
A high occupational exposure limit
Correct Answer
B. Higher contaminant toxicitiesExplanation
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- 39.
What is the maximum amount of a certain chemical vapor that air can hold at a given temperature?
- A.
Vapor pressure
- B.
Explosive limit
- C.
Saturation concentration
- D.
Required air flow volume
Correct Answer
C. Saturation concentrationExplanation
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- 40.
The purpose of using splitter vanes, multiple takeoffs, or baffles inside of a local exhaust hood is to provide
- A.
A reduction in system resistance
- B.
An increase in hood static pressure
- C.
Proper discharge of air away from inlets
- D.
Uniform air distribution across the hood face
Correct Answer
D. Uniform air distribution across the hood faceExplanation
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- 41.
What determines the capture velocity that must be used for a properly designed canopy hood?
- A.
Number of open sides
- B.
Height of the canopy hood
- C.
Location of the side curtains
- D.
Contaminant containing tank size
Correct Answer
A. Number of open sidesExplanation
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- 42.
The effectiveness of a ventilation system ultimately confirmed if
- A.
Air sampling results are below the OEEL
- B.
Air sampling results are within +/- 10 percent of the Occupational and Environmental Exposure Limit (OEEL).
- C.
Routine measurements are within 10 percent of the baseline measurements
- D.
Baseline measurements are within 10 percent of the key design parameters
Correct Answer
A. Air sampling results are below the OEELExplanation
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- 43.
In a routine survey, ventilation system data collected during the routine assessment should be compared to
- A.
Key parameters
- B.
Factory findings
- C.
Previous routine survey data
- D.
Data collected during the baseline survey
Correct Answer
D. Data collected during the baseline surveyExplanation
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- 44.
What important procedure must you follow to obtain accurate readings with a velometer?
- A.
Hold the probe parallel to the air flow
- B.
Always make two traverses at right angles to one another
- C.
Choose a section of the duct with smooth flow for measurement
- D.
Hold tube so that the mark aligns with the side of the duct and point tube directly into the air stream
Correct Answer
A. Hold the probe parallel to the air flowExplanation
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- 45.
What may be indicated by a very strong flow coming in an open door of a room containing a local exhaust system?
- A.
Adequate makeup air
- B.
Excessive cross drafts
- C.
Inadequate makeup air
- D.
Proper discharge of air away from inlets
Correct Answer
C. Inadequate makeup airExplanation
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- 46.
What is the purpose of the eight tiny holes on the outside of a pitot tube?
- A.
Detect total pressure
- B.
Detect static pressure
- C.
Determine the duct diameter
- D.
Determine the density factor
Correct Answer
B. Detect static pressureExplanation
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- 47.
The range of acceptable values for the air flow volume on routine tests is within what percentage of the baseline value?
- A.
25 percent
- B.
20 percent
- C.
15 percent
- D.
10 percent
Correct Answer
D. 10 percentExplanation
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- 48.
During your indoor air quality investigation, you document several drip pans with standing water. Which recommendation would be most desirable?
- A.
Eliminate source of water
- B.
Increase fresh air rate
- C.
Rebalance system
- D.
Replace filters
Correct Answer
A. Eliminate source of waterExplanation
In order to improve indoor air quality, it is important to address any sources of moisture or standing water. This is because standing water can lead to the growth of mold and other harmful microorganisms, which can negatively impact air quality. By eliminating the source of water, such as fixing leaks or ensuring proper drainage, the potential for mold growth and the associated health risks can be minimized. This recommendation is therefore the most desirable in this situation.Rate this question:
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- 49.
Which agency serves as the office of primary (OPR) responsibility for the installation respiratory protection program?
- A.
Civil Engineering
- B.
Bioenvironmental Engineering
- C.
USAF School of Aerospace Medicine
- D.
Occupational Safety and Health Administration
Correct Answer
B. Bioenvironmental EngineeringExplanation
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- 50.
What type of respirator is designed to filter a chemical out of the surrounding air?
- A.
Air-line
- B.
Air-purifying
- C.
Atmosphere supplying
- D.
Closed circuit self-contained breathing apparatuses (SCBA).
Correct Answer
B. Air-purifyingExplanation
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May 27, 2023Quiz Edited by
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