CDC 4b051 Vol3

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| By Stewie

Stewie

Community Contributor

Quizzes Created: 4 | Total Attempts: 2,726

| Attempts: 612

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1/96 Questions

What is the difference between the DOD and AF Assessment Models?
- There is no difference.
- The AF model is an “iterative” approach
- The DOD model does not include a control plan
- Each process is designed to yield different results

About This Quiz

CDC 4B051 Vol 3/6
edit code 03
again by yours truly

Quiz Preview

2.

Which phrase most accurately describes the American Industrial Hygiene Association (AIHA) Exposure Model?
- Does not establish controls for exposures
- The AIHA model strives for continuous improvement
- The AIHA model is very different from the AF model.
- The AIHA model is best used as an initial assessment.
Correct Answer

A. The AIHA model strives for continuous improvement

Explanation

back for more of my shenanigans

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3.

Which is not an AFI 48–146 guideline for performing exposure screening assessments?
- Documentation is not necessary.
- A minimum of three samples is recommended
- Samples should be taken on three different days
- Samples should be random, collected over time, and from different workers
Correct Answer

A. Documentation is not necessary.

Explanation

if you chose not to document your just asking for a bruising

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4.

According to American Industrial Hygiene Association (AIHA), the goal of random sampling is to
- Obtain data for documentation
- Produce results via a “shoot from the hip” method
- Produce a cyclical process for prioritizing controls needed
- Achieve equal probability of selecting an exposure period in the similar exposure group (SEG) during the assessment
Correct Answer

A. Achieve equal probability of selecting an exposure period in the similar exposure group (SEG) during the assessment

Explanation

this seems pretty easy so far, don't fuk it up

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5.

What type of Occupational and Environmental Exposure Limits (OEEL) is "set and enforced by governmental agencies?"
- Working
- Internal.
- Regulatory
- Authoritative.
Correct Answer

A. Regulatory

Explanation

can we speed this up, now!

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6.

A 15-minute time weighted average (TWA) short-term exposure limit is known as a
- Permissible Exposure Limit (PEL).
- Short-term Exposure Limit (STEL).
- Excursion Limit
- Ceiling Limit.
Correct Answer

A. Short-term Exposure Limit (STEL).

Explanation

this question reminded me of Short Round from Indiana Jones, hmmm I cant say I have seen to many Chinese in the AF

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7.

What level of Protective Action Criteria (PAC) indicates life-threatening health effects?
- PAC–1
- PAC–2
- PAC–3.
- PAC–4
Correct Answer

A. PAC–3.

Explanation

你个笨蛋 for those that are Chinese in the AF

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8.

The purpose of establishing an Immediately Dangerous to Life or Health (IDLH) exposure concentration is to
- Ensure the Maximum Contaminant Level Goal (MCLG) is enforced
- Determine which Acute Exposure Guideline Levels (AEGL) exposure level has been reached
- Ensure the worker can escape from a contaminated environment without irreversible health effects.
- Ensure the worker is properly trained to understand and avoid Agency for Toxic Substance and Disease Registry (ASTDR) occupational risk levels for inhalation
Correct Answer

A. Ensure the worker can escape from a contaminated environment without irreversible health effects.

Explanation

hows this career field going for you, by the looks of this test you may not survive

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9.

In addition to being a required mandate, sampling is performed to
- Provide accurate documentation for reporting in DOEHRS
- Comprehensively complete a Conceptual Site Model (CSM).
- Increase confidence in characterizing and controlling potential threats
- Provide information to fill the “gaps” inherent in HRA data gathering
Correct Answer

A. Increase confidence in characterizing and controlling potential threats

Explanation

come on now

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10.

What type of sampling is being conducted if a technician is using a HAPSITE to sample at a specific time?
- Area
- Grab
- Swipe
- Active
Correct Answer

A. Grab

Explanation

I didn't need no stinking book to look this one up

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11.

Composite sampling is primarily used when sampling
- Air
- Soil
- Water
- Chemicals
Correct Answer

A. Soil

Explanation

Ever get turned off from this job when 80% of your day is spent staring at a computer screen entering data in DOEHRS or other related work... or making this damn test

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12.

Sample holding times, preservatives, and collection tool hygiene are things that a technician should be aware of when conducting which type of sampling?
- Integrated
- Passive
- Area
- Grab
Correct Answer

A. Grab

Explanation

You know I cant say I know too many people at the office who care to stay in this profession, might be worth while to see how different work is in the civy sector, fk cross training, aint nobody got time for that

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13.

When developing an Occupational Exposure strategy, the purpose of evaluating existing controls is to
- Determine workforce size
- Determine if they are effective
- Determine the maximum risk employee(s).
- Acquire funding for additional Personal Protective Equipment (PPE).
Correct Answer

A. Determine if they are effective

Explanation

im done just focus on the damn quiz

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14.

You are developing a Conceptual Site Model (CSM) to identify type(s) of data needed. Which step of the Data Quality Objectives (DQO) process is being conducted?
- Step 1- State the problem
- Step 2- Identify the decision
- Step 3- Identify the information inputs
- Step 5- Develop the analytical approach
Correct Answer

A. Step 3- Identify the information inputs

Explanation

The correct answer is Step 3- Identify the information inputs. In this step of the DQO process, the focus is on identifying the type(s) of data needed to address the problem or decision at hand. The Conceptual Site Model (CSM) is being developed to understand the site and its potential sources of contamination, and in order to do so, it is necessary to identify the specific information inputs required for the CSM. This step helps ensure that the necessary data is collected and analyzed to support the decision-making process.

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15.

What is the definition of quality control?
- The broad plan for maintaining quality in all aspects of sample collection.
- The steps to be taken to determine validity of sampling and analytical procedures.
- The specific procedures recommended by the USAFSAM Laboratory Sampling Guide
- A checklist of pitfalls to avoid when developing, implementing and completing a sampling strategy.
Correct Answer

A. The steps to be taken to determine validity of sampling and analytical procedures.

Explanation

The definition of quality control is the steps to be taken to determine the validity of sampling and analytical procedures. This involves ensuring that the methods used for collecting samples and conducting analyses are accurate and reliable. Quality control measures help to identify and correct any errors or biases in the sampling and analysis process, ensuring that the results obtained are valid and trustworthy.

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16.

Which statement best describes chain of custody?
- Samples must be verified prior to analysis
- Samples must be traceable from collection through analysis
- Samples should be redundantly labeled according to 49 CFR Part 172
- Samples should be sent by standard United States Postal Service (USPS) mailing procedures.
Correct Answer

A. Samples must be traceable from collection through analysis

Explanation

Chain of custody refers to the process of documenting and maintaining the chronological history of the handling, transfer, and storage of samples or evidence. It ensures that there is a clear and unbroken record of the custody of the samples from the moment they are collected until they are analyzed. This helps to establish the integrity and reliability of the samples and the subsequent analysis.

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17.

The development of your flight’s Environmental Sampling Analysis and Monitoring Plan is based on
- The criteria provided to you by civil engineering
- The requirements provided by your MAJCOM BE
- The historical performance of your drinking water system
- The regulatory requirements for your drinking water system
Correct Answer

A. The regulatory requirements for your drinking water system

Explanation

The development of the flight's Environmental Sampling Analysis and Monitoring Plan is based on the regulatory requirements for the drinking water system. This means that the plan is created in accordance with the rules and regulations set by the governing bodies responsible for ensuring the safety and quality of drinking water. These regulations outline the specific parameters, sampling frequency, and analysis methods that must be followed to ensure compliance and maintain the safety of the drinking water system.

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18.

When would it be advantageous to use field analytical screening methods that are direct reading?
- When you need to confirm indirect reading instrument sampling results
- When an immediate answer is necessary or time is a constraint
- When you don’t have access to indirect reading instruments
- When you are in a potentially explosive atmosphere
Correct Answer

A. When an immediate answer is necessary or time is a constraint

Explanation

Field analytical screening methods that are direct reading are advantageous when an immediate answer is necessary or time is a constraint. This is because these methods provide real-time results, allowing for quick decision-making and immediate action. They eliminate the need for sending samples to a laboratory and waiting for the results, saving valuable time. In situations where time is limited, such as emergency response or on-site assessments, direct reading methods can provide rapid and reliable information, ensuring prompt and effective decision-making.

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19.

If you need to determine the residual chlorine content in a drinking water sampling, which piece of equipment would you use?
- Color comparator
- Litmus test paper
- Colilert color comparator
- Heterotrophic plate count
Correct Answer

A. Color comparator

Explanation

A color comparator is used to determine the residual chlorine content in a drinking water sampling. This piece of equipment allows for the comparison of the color of the water sample with a set of standard color discs or tubes, which represent different chlorine concentrations. By matching the color of the sample with the closest standard disc or tube, the residual chlorine content can be determined. This method is commonly used in water treatment plants and laboratories to ensure that the drinking water is safe for consumption.

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20.

The equipment that functions as a fully equipped portable laboratory and is able to run about 100 tests is the
- DREL 2800
- DREL 2010
- M272 water testing kit
- Bacteriological water test kit
Correct Answer

A. DREL 2800

Explanation

The DREL 2800 is the correct answer because it is described as a fully equipped portable laboratory that can run about 100 tests. This suggests that it has all the necessary equipment and capabilities to perform various tests, making it a comprehensive and efficient option. The other options, such as the DREL 2010, M272 water testing kit, and Bacteriological water test kit, do not provide the same level of functionality and capacity as the DREL 2800.

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21.

What type of sampler is best suited to collecting a water sample at various levels of a large tank containing an unknown liquid?
- Bacon bomb
- Long pipette
- Handheld dipper.
- Plastic polypropylene line glass jar attached to a rope.
Correct Answer

A. Bacon bomb
22.

Fluid transfer is best accomplished using
- Pasteur pipet
- 40 ml glass vial
- Cubitaner sampler
- Whirl-Pak sample bag
Correct Answer

A. Pasteur pipet

Explanation

A Pasteur pipet is the best tool for fluid transfer because it is specifically designed for accurate and precise measurements of small volumes of liquid. It has a narrow, tapered tip that allows for easy suction and release of fluids. Additionally, the glass construction of a Pasteur pipet makes it resistant to chemical reactions and contamination, ensuring the integrity of the transferred fluid.

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23.

The purpose of calibrating water sampling and analysis equipment is to
- Collect as many samples as possible for each water source.
- Know how the water sampling equipment should be operated
- Ensure accurate results from drinking water sampling
- Determine ranges for water contaminants
Correct Answer

A. Ensure accurate results from drinking water sampling

Explanation

The purpose of calibrating water sampling and analysis equipment is to ensure accurate results from drinking water sampling. Calibration involves adjusting and standardizing the equipment to ensure that it is measuring accurately and providing reliable data. This is crucial in order to obtain precise and trustworthy results when analyzing the quality of drinking water. Calibrating the equipment helps to eliminate any potential errors or inaccuracies in the sampling process, ensuring that the results obtained are reliable and can be used for making informed decisions regarding water quality and safety.

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24.

When collecting drinking water samples, in what order should you collect them?
- Chemicals, microbiological, metals
- Microbiological, metals, chemicals
- Metals, chemicals, microbiological.
- Chemicals, metals, microbiological
Correct Answer

A. Metals, chemicals, microbiological.

Explanation

When collecting drinking water samples, it is important to prioritize the collection of metals, followed by chemicals, and then microbiological samples. This order ensures that any potential contamination from metals, such as lead or copper, is detected first. Chemicals, such as pesticides or industrial pollutants, can also pose health risks and should be tested for next. Finally, microbiological samples, which test for bacteria or other microorganisms, should be collected last as they are more likely to be affected by external factors such as temperature or exposure to air.

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25.

When sterilizing a water tap, what is the percentage of chlorine solution you should use and how long should the tap be immersed in the solution?
- 1 percent chlorine solution; 0.5 minutes
- 1 percent chlorine solution; 2 minutes
- 1 percent chlorine solution; 1 minute
- 1 percent chlorine solution; 3 minutes
Correct Answer

A. 1 percent chlorine solution; 0.5 minutes
26.

When collecting potable water samples for bacteriological analysis, you should adhere to all of the following guidelines except which one?
- Never hold the bottle by the neck
- Always used good personal hygiene
- Never lay the bottle down on the ground
- Always flush out the bottle before taking the sample
Correct Answer

A. Always flush out the bottle before taking the sample

Explanation

When collecting potable water samples for bacteriological analysis, it is important to adhere to all of the following guidelines except for always flushing out the bottle before taking the sample. Flushing out the bottle before taking the sample can introduce contaminants into the water, thereby affecting the accuracy of the analysis. It is essential to maintain good personal hygiene, never hold the bottle by the neck, and never lay the bottle down on the ground to ensure the integrity of the sample.

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27.

If you ship your bacteriological water samples to an approved laboratory, what is the maximum time between collection and examination?
- 12 hours
- 24 hours
- 36 hours.
- 48 hours
Correct Answer

A. 24 hours

Explanation

Bacteriological water samples are highly sensitive and can easily degrade over time. To ensure accurate results, it is crucial to minimize the time between collection and examination. The maximum time allowed for shipping these samples to an approved laboratory is 24 hours. Beyond this timeframe, the samples may become compromised, leading to inaccurate test results. Therefore, it is important to prioritize prompt transportation and analysis of bacteriological water samples to maintain their integrity.

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28.

If the color of the water in the test tube does not exactly match any of the color comparator standards, you
- Repeat the sampling
- Record the residual as the higher of the two standards
- Record the residual as the lower of the two standards
- Record the residual as the reading between the two standards
Correct Answer

A. Record the residual as the reading between the two standards

Explanation

When the color of the water in the test tube does not exactly match any of the color comparator standards, it means that it falls between two standard colors. In this case, the best course of action is to record the residual as the reading between the two standards. This allows for a more accurate representation of the color of the water, as it acknowledges that it is not a perfect match to either of the standards.

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29.

Drinking water with a high pH level (above 8.5) indicates to you the water
- Is soft
- Is corrosive.
- Is a health risk.
- Can cause aesthetic problems
Correct Answer

A. Can cause aesthetic problems

Explanation

Water with a high pH level (above 8.5) can cause aesthetic problems. Aesthetic problems refer to issues that affect the appearance or taste of the water. High pH levels can result in a bitter or metallic taste, as well as discoloration or staining of fixtures and laundry. While it may not pose a health risk or be corrosive, it can still be undesirable due to the impact on the water's taste and appearance.

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30.

What type of water/liquid do you use to calibrate the pH pen?
- Distilled
- Deionized
- Buffer solution
- Calibration fluid that comes with the pH pen
Correct Answer

A. Buffer solution

Explanation

Buffer solution is the correct answer for calibrating a pH pen. Buffer solutions are specifically designed to have a stable and known pH value. They are made by mixing a weak acid and its conjugate base or a weak base and its conjugate acid. By using a buffer solution to calibrate the pH pen, it ensures that the pen is accurately measuring pH levels and providing reliable readings. Distilled water, deionized water, or the calibration fluid that comes with the pH pen may not have a known and stable pH value, making them unsuitable for calibration.

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31.

What test do you use to obtain qualitative information on whether or not your water sample contains coliforms?
- Absence/confirmation method
- Presence/deficiency method
- Absence/validation method
- Presence/absence method
Correct Answer

A. Presence/absence method

Explanation

The presence/absence method is used to obtain qualitative information on whether or not a water sample contains coliforms. This method involves testing the sample for the presence or absence of coliform bacteria, which are indicators of potential fecal contamination. If coliforms are present in the sample, it indicates that the water may be contaminated and further testing is required. If coliforms are absent, it suggests that the water is free from fecal contamination. This method is commonly used in water quality testing to ensure the safety of drinking water.

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32.

When should you take pH and chlorine measurements of the base swimming pool?
- Before anyone enters the pool
- During minimum load conditions
- During the busiest time of the day
- When requested by the swimming pool facility manager
Correct Answer

A. During the busiest time of the day

Explanation

Taking pH and chlorine measurements during the busiest time of the day is important because this is when the pool is likely to have the highest number of swimmers and therefore the highest level of contaminants. By measuring pH and chlorine levels during this time, the facility manager can ensure that the pool is properly balanced and sanitized to maintain the safety and comfort of the swimmers. This is crucial for preventing the spread of waterborne illnesses and maintaining the overall cleanliness of the pool.

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33.

When is the only time you collect bacteriological samples of a hot tub/spa?
- Weekly during times of high usage
- When readings indicate there is no chlorine in the water
- If an illness occurs as a result of someone using the hot tub/spa
- Immediately after the hot tub/spa has been drained and cleaned
Correct Answer

A. If an illness occurs as a result of someone using the hot tub/spa

Explanation

Bacteriological samples of a hot tub/spa are collected if an illness occurs as a result of someone using it. This is because the presence of illness indicates a potential contamination or bacterial growth in the hot tub/spa, which needs to be investigated and addressed. Collecting bacteriological samples in such cases helps in identifying the specific bacteria causing the illness and taking appropriate measures to prevent further infections.

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34.

What action should you take if the bacteriological quality of the swimming pool water does not meet standards?
- Immediately recommend the pool be superchlorinated
- Collect repeat samples from different sections of the pool
- Recommend to the medical group commander the pool be closed
- Collect repeat samples from the sections where you originally took samples
Correct Answer

A. Collect repeat samples from the sections where you originally took samples

Explanation

If the bacteriological quality of the swimming pool water does not meet standards, the appropriate action to take is to collect repeat samples from the sections where the original samples were taken. This is important to verify the initial results and ensure accuracy. By collecting repeat samples, it allows for a thorough assessment of the bacteriological quality of the water and provides a basis for determining the necessary steps to address the issue. It also helps in identifying any potential areas of concern or contamination within the pool.

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35.

You perform heterotrophic plate counts for swimming pools to
- Measure the exact number of live heterotrophic organism in the water
- Determine the quality of the water following superchlorination
- Measure changes in the swimming pool treatment process
- Determine the number of fecal coliforms in the water
Correct Answer

A. Measure changes in the swimming pool treatment process

Explanation

Heterotrophic plate counts are performed to measure changes in the swimming pool treatment process. This is because heterotrophic organisms are commonly found in water and their presence can indicate the effectiveness of the treatment process. By comparing the plate counts before and after treatment, any changes in the numbers of heterotrophic organisms can be observed, providing insights into the efficiency of the treatment process.

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36.

What sample media do you use for the Spread Plate Method?
- R2A Agar
- EC medium
- M-Endo broth
- M-FC medium
Correct Answer

A. R2A Agar

Explanation

The correct answer is R2A Agar. The Spread Plate Method is a technique used in microbiology to isolate and enumerate bacteria in a sample. R2A Agar is a specific type of agar medium that is commonly used for this method. It contains a combination of nutrients that support the growth of a wide range of bacteria, including those that are typically found in environmental samples. This makes it suitable for the isolation and enumeration of bacteria from various sources, such as soil, water, and wastewater. EC medium, M-Endo broth, and M-FC medium are other types of media used for different purposes in microbiology, but they are not specifically designed for the Spread Plate Method.

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37.

When you are sampling for solids, what is the maximum regulatory time the samples can be stored prior to analysis?
- 28 days
- 24 hours
- 2–7 days
- 0.25 hours
Correct Answer

A. 2–7 days

Explanation

The maximum regulatory time for storing samples prior to analysis when sampling for solids is 2-7 days. This time frame allows for sufficient time to transport the samples to the laboratory and conduct the necessary analysis while minimizing the risk of sample degradation or contamination. Storing the samples for longer periods may lead to inaccurate results and compromise the integrity of the analysis.

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38.

Why are proper protocol and preservation guidelines important elements of a quality assurance/ quality control (QA/QC) program?
- These ensure water data is accurate and useful
- These eliminate the need for field quality control samples
- These affect the reporting procedures required
- These eliminate the need for equipment calibration
Correct Answer

A. These ensure water data is accurate and useful

Explanation

Proper protocol and preservation guidelines are important elements of a QA/QC program because they ensure that water data is accurate and useful. By following these guidelines, the data collected will be reliable and can be used for various purposes such as scientific research, regulatory compliance, and decision-making. The guidelines help in standardizing the procedures for sample collection, handling, and analysis, which minimizes errors and ensures consistency. This ultimately leads to reliable and trustworthy water data that can be used with confidence.

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39.

Which is a true statement regarding duplicate samples?
- Samples are handled differently
- Samples are taken at the same location
- Samples are taken using different collection methods.
- Samples are intended to compare laboratory differences
Correct Answer

A. Samples are intended to compare laboratory differences

Explanation

No longer used question so answer doesn't matter

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40.

In the liquid sampling quality assurance/ quality control (QA/QC) process, what is the difference between trip blanks and equipment blanks?
- Equipment blanks contain preservatives
- Trip blanks are provided by the laboratory
- Trip blanks only measure the temperature of the blank
- Equipment blanks are analyzed differently than other samples
Correct Answer

A. Trip blanks are provided by the laboratory

Explanation

Trip blanks are provided by the laboratory, whereas equipment blanks are not necessarily provided by the laboratory. Trip blanks are used to measure any contamination that may occur during the transportation of samples from the field to the laboratory. On the other hand, equipment blanks are used to measure any contamination that may occur from the equipment used in the sampling process.

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41.

It is important to use a chain of custody form because it helps ensure sample integrity from
- Collection to analysis
- Analysis to data reporting
- Collection to data reporting
- Sampling shipment to analysis
Correct Answer

A. Collection to data reporting

Explanation

A chain of custody form is important because it helps maintain the integrity of a sample from the moment it is collected until the data is reported. It ensures that the sample is properly handled and documented throughout the entire process, including collection, analysis, and data reporting. This helps prevent any tampering or contamination of the sample, ensuring accurate and reliable results.

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42.

You should seal your liquid sample containers because it
- Ensures your samples will not leak during transport
- Helps detect unauthorized tampering of your samples
- Prevents unwanted contaminates from getting into the container
- Prevents your sample containers from being damaged during shipment
Correct Answer

A. Helps detect unauthorized tampering of your samples

Explanation

Sealing the liquid sample containers helps detect unauthorized tampering of the samples. By sealing the containers, any attempt to open or tamper with them would be evident, as the seal would be broken or tampered with. This ensures the integrity of the samples and helps maintain their reliability and accuracy. It is an important security measure to prevent any unauthorized access or manipulation of the samples.

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43.

If any of your sampling equipment was contaminated it could cause
- Invalid sampling results
- Skin contact hazard to the user
- Damage to the sampling equipment
- No problem as long as the contamination was minimal
Correct Answer

A. Invalid sampling results

Explanation

If any of the sampling equipment used in the process is contaminated, it can lead to invalid sampling results. This is because the contamination can introduce foreign substances or impurities into the sample, thereby affecting its composition and accuracy. Contamination can occur through various means such as improper handling, storage, or cleaning of the equipment. Therefore, it is crucial to ensure that the sampling equipment is clean and free from any contaminants to obtain reliable and valid sampling results.

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44.

Why do you need to use caution when using reagents to decontaminate sample equipment?
- Reagents can damage the soil if not collected after use
- Reagents can leave residue on the sampling equipment.
- Reagents must be stored separate from any non-compatible materials
- Reagents can cause inhalation hazards if not used in a well-ventilated area
Correct Answer

A. Reagents can leave residue on the sampling equipment.

Explanation

Using caution when using reagents to decontaminate sample equipment is necessary because reagents can leave residue on the sampling equipment. This residue can contaminate future samples, leading to inaccurate results. To ensure the integrity of the samples, it is important to properly clean and remove any residue left by the reagents.

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45.

When comparing your sample results to a standard, what is the generally accepted practice?
- Use the most current Environmental Restoration Program (EPA) standard
- Use the most current Occupational Safety and Health Act (OSHA) standard
- Use the most current standard listed in the Threshold Limit Value (TLV) Booklet
- Use the most current and stringent occupational and environmental exposure limit (OEEL).
Correct Answer

A. Use the most current and stringent occupational and environmental exposure limit (OEEL).

Explanation

The generally accepted practice when comparing sample results to a standard is to use the most current and stringent occupational and environmental exposure limit (OEEL). This ensures that the comparison is based on the most up-to-date and strict guidelines for occupational and environmental safety. Using the most current and stringent OEEL helps to ensure that the sample results are evaluated against the highest level of protection for workers and the environment.

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46.

What is the proper way to document your sample results once they have been interpreted, is done according to
- The applicable Air Force Office of Safety and Health (AFOSH) Standard.
- The Occupational Safety and Health Act (OSHA) criteria.
- The latest data management system
- Flight’s locally developed criteria.
Correct Answer

A. The latest data management system

Explanation

could find an answer in the book for this, msg me if im wrong

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47.

Water sample result interpretation is conducted by
- Conducting a thorough QA/QC process
- Comparing results to a selected standard
- Comparing current results to previous survey(s).
- Using your chain of command for their decision
Correct Answer

A. Comparing results to a selected standard

Explanation

The correct answer is comparing results to a selected standard. When interpreting water sample results, it is important to compare them to a specific standard or guideline. This helps determine if the water quality meets the required criteria for safe consumption or specific purposes. By comparing the results to a selected standard, any deviations or abnormalities can be identified, and appropriate actions can be taken to address any potential issues.

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48.

Which statement describes grab sampling?
- Sample collected over a period of time.
- Instantaneous sample to provide quick estimate
- Samples taken must be analyzed by a certified laboratory
- Samples taken to demonstrate compliance with health standards
Correct Answer

A. Instantaneous sample to provide quick estimate

Explanation

Grab sampling refers to the collection of an instantaneous sample to provide a quick estimate. This means that a single sample is taken at a specific moment in time, rather than over a period of time. It is a method commonly used when immediate results or quick estimates are needed, and it allows for a rapid assessment of the quality or composition of a substance. The other statements do not accurately describe grab sampling.

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49.

Integrated sampling is also referred to as
- Compliance screening
- Instantaneous sample
- Direct reading or screening compliance
- Indirect reading or continuous monitoring
Correct Answer

A. Indirect reading or continuous monitoring

Explanation

Integrated sampling is a method used in environmental monitoring to continuously measure pollutants over a period of time. It involves collecting samples at regular intervals and analyzing them to determine the concentration of pollutants. This method provides a more accurate and comprehensive understanding of pollutant levels compared to instantaneous sampling, as it takes into account variations in pollutant concentrations over time. Therefore, the answer "indirect reading or continuous monitoring" is correct as it accurately describes the process of integrated sampling.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Feb 13, 2017

Quiz Created by
Stewie

CDC 4b051 Vol3

What is the difference between the DOD and AF Assessment Models?

Quiz Preview

Which phrase most accurately describes the American Industrial Hygiene Association (AIHA) Exposure Model?

Which is not an AFI 48–146 guideline for performing exposure screening assessments?

According to American Industrial Hygiene Association (AIHA), the goal of random sampling is to

What type of Occupational and Environmental Exposure Limits (OEEL) is "set and enforced by governmental agencies?"

A 15-minute time weighted average (TWA) short-term exposure limit is known as a

What level of Protective Action Criteria (PAC) indicates life-threatening health effects?

The purpose of establishing an Immediately Dangerous to Life or Health (IDLH) exposure concentration is to

In addition to being a required mandate, sampling is performed to

What type of sampling is being conducted if a technician is using a HAPSITE to sample at a specific time?

Composite sampling is primarily used when sampling

Sample holding times, preservatives, and collection tool hygiene are things that a technician should be aware of when conducting which type of sampling?

When developing an Occupational Exposure strategy, the purpose of evaluating existing controls is to

You are developing a Conceptual Site Model (CSM) to identify type(s) of data needed. Which step of the Data Quality Objectives (DQO) process is being conducted?

What is the definition of quality control?

Which statement best describes chain of custody?

The development of your flight’s Environmental Sampling Analysis and Monitoring Plan is based on

When would it be advantageous to use field analytical screening methods that are direct reading?

If you need to determine the residual chlorine content in a drinking water sampling, which piece of equipment would you use?

The equipment that functions as a fully equipped portable laboratory and is able to run about 100 tests is the

What type of sampler is best suited to collecting a water sample at various levels of a large tank containing an unknown liquid?

Fluid transfer is best accomplished using

The purpose of calibrating water sampling and analysis equipment is to

When collecting drinking water samples, in what order should you collect them?

When sterilizing a water tap, what is the percentage of chlorine solution you should use and how long should the tap be immersed in the solution?

When collecting potable water samples for bacteriological analysis, you should adhere to all of the following guidelines except which one?

If you ship your bacteriological water samples to an approved laboratory, what is the maximum time between collection and examination?

If the color of the water in the test tube does not exactly match any of the color comparator standards, you

Drinking water with a high pH level (above 8.5) indicates to you the water

What type of water/liquid do you use to calibrate the pH pen?

What test do you use to obtain qualitative information on whether or not your water sample contains coliforms?

When should you take pH and chlorine measurements of the base swimming pool?

When is the only time you collect bacteriological samples of a hot tub/spa?

What action should you take if the bacteriological quality of the swimming pool water does not meet standards?

You perform heterotrophic plate counts for swimming pools to

What sample media do you use for the Spread Plate Method?

When you are sampling for solids, what is the maximum regulatory time the samples can be stored prior to analysis?

Why are proper protocol and preservation guidelines important elements of a quality assurance/ quality control (QA/QC) program?

Which is a true statement regarding duplicate samples?

In the liquid sampling quality assurance/ quality control (QA/QC) process, what is the difference between trip blanks and equipment blanks?

It is important to use a chain of custody form because it helps ensure sample integrity from

You should seal your liquid sample containers because it

If any of your sampling equipment was contaminated it could cause

Why do you need to use caution when using reagents to decontaminate sample equipment?

When comparing your sample results to a standard, what is the generally accepted practice?

What is the proper way to document your sample results once they have been interpreted, is done according to

Water sample result interpretation is conducted by

Which statement describes grab sampling?

Integrated sampling is also referred to as