CDC 4b051 Vol3
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Fluid transfer is best accomplished using
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Pasteur pipet
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40 ml glass vial
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Cubitaner sampler
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Whirl-Pak sample bag
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CDC 4B051 Vol 3/6
edit code 03
again by yours truly
Quiz Preview
- 2.
This occupational exposure limit (OEL) is a concentration of contaminants which can never be exceeded during any part of the working exposure
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Skin
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Ceiling
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Excursions
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Short term
Correct Answer
A. CeilingExplanation
The term "ceiling" in the context of occupational exposure limit refers to a concentration of contaminants that should never be exceeded at any time during the working exposure. This means that the level of contaminants in the air or environment should not go beyond the specified ceiling limit, ensuring the safety and health of workers. The ceiling limit is set to prevent any adverse effects that may occur due to prolonged exposure to high levels of contaminants.Rate this question:
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- 3.
What type of sampling is being conducted if a technician is using a HAPSITE to sample at a specific time?
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Area
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Grab
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Swipe
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Active
Correct Answer
A. GrabExplanation
I didn't need no stinking book to look this one upRate this question:
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- 4.
What type of sampler is best suited to collecting a water sample at various levels of a large tank containing an unknown liquid?
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Bacon bomb
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Long pipette
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Handheld dipper.
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Plastic polypropylene line glass jar attached to a rope.
Correct Answer
A. Bacon bomb -
- 5.
When is the only time you collect bacteriological samples of a hot tub/spa?
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Weekly during times of high usage
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When readings indicate there is no chlorine in the water
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If an illness occurs as a result of someone using the hot tub/spa
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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/spaExplanation
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.Rate this question:
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- 6.
A 15-minute time weighted average (TWA) short-term exposure limit is known as a
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Permissible Exposure Limit (PEL).
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Short-term Exposure Limit (STEL).
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Excursion Limit
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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 AFRate this question:
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- 7.
When would it be advantageous to use field analytical screening methods that are direct reading?
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When you need to confirm indirect reading instrument sampling results
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When an immediate answer is necessary or time is a constraint
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When you don’t have access to indirect reading instruments
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When you are in a potentially explosive atmosphere
Correct Answer
A. When an immediate answer is necessary or time is a constraintExplanation
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.Rate this question:
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- 8.
The purpose of calibrating water sampling and analysis equipment is to
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Collect as many samples as possible for each water source.
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Know how the water sampling equipment should be operated
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Ensure accurate results from drinking water sampling
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Determine ranges for water contaminants
Correct Answer
A. Ensure accurate results from drinking water samplingExplanation
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.Rate this question:
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- 9.
If any of your sampling equipment was contaminated it could cause
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Invalid sampling results
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Skin contact hazard to the user
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Damage to the sampling equipment
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No problem as long as the contamination was minimal
Correct Answer
A. Invalid sampling resultsExplanation
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.Rate this question:
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- 10.
Why do you need to use caution when using reagents to decontaminate sample equipment?
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Reagents can damage the soil if not collected after use
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Reagents can leave residue on the sampling equipment.
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Reagents must be stored separate from any non-compatible materials
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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.Rate this question:
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- 11.
Which is not an AFI 48–146 guideline for performing exposure screening assessments?
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Documentation is not necessary.
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A minimum of three samples is recommended
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Samples should be taken on three different days
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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 bruisingRate this question:
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- 12.
Composite sampling is primarily used when sampling
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Air
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Soil
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Water
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Chemicals
Correct Answer
A. SoilExplanation
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 testRate this question:
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- 13.
When performing post sampling calibration, use the lowest flow rate for calculating the volume collected because
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It is the most conservative
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It exploits the device’s capabilities
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This accounts for atmospheric changes
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It makes DOEHRS data entry the most efficient
Correct Answer
A. It is the most conservativeExplanation
Using the lowest flow rate for calculating the volume collected during post-sampling calibration is the most conservative approach. This means that it ensures the collected volume is not overestimated, providing a more accurate representation of the actual volume collected. By being conservative, any potential errors or uncertainties in the measurement are minimized, leading to more reliable results.Rate this question:
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- 14.
How do you prepare a blank?
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Keep an unopened tube with the samples
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Sample another worker away from the process
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Open and immediately seal the media in the work area
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Leave an opened tube in an area throughout sampling
Correct Answer
A. Open and immediately seal the media in the work areaExplanation
To prepare a blank, it is important to open and immediately seal the media in the work area. This ensures that the media remains uncontaminated and prevents any outside particles from entering the sample. By sealing the media right away, the chances of contamination are minimized, allowing for accurate and reliable results during sampling. Keeping an unopened tube with the samples, sampling another worker away from the process, or leaving an opened tube in an area throughout sampling can all introduce potential sources of contamination, making them incorrect choices.Rate this question:
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- 15.
Which phrase most accurately describes the American Industrial Hygiene Association (AIHA) Exposure Model?
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Does not establish controls for exposures
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The AIHA model strives for continuous improvement
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The AIHA model is very different from the AF model.
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The AIHA model is best used as an initial assessment.
Correct Answer
A. The AIHA model strives for continuous improvementExplanation
back for more of my shenanigansRate this question:
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- 16.
What type of Occupational and Environmental Exposure Limits (OEEL) is "set and enforced by governmental agencies?"
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Working
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Internal.
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Regulatory
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Authoritative.
Correct Answer
A. RegulatoryExplanation
can we speed this up, now!Rate this question:
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- 17.
When developing an Occupational Exposure strategy, the purpose of evaluating existing controls is to
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Determine workforce size
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Determine if they are effective
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Determine the maximum risk employee(s).
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Acquire funding for additional Personal Protective Equipment (PPE).
Correct Answer
A. Determine if they are effectiveExplanation
im done just focus on the damn quizRate this question:
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- 18.
Which statement best describes chain of custody?
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Samples must be verified prior to analysis
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Samples must be traceable from collection through analysis
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Samples should be redundantly labeled according to 49 CFR Part 172
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Samples should be sent by standard United States Postal Service (USPS) mailing procedures.
Correct Answer
A. Samples must be traceable from collection through analysisExplanation
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.Rate this question:
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- 19.
The equipment that functions as a fully equipped portable laboratory and is able to run about 100 tests is the
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DREL 2800
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DREL 2010
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M272 water testing kit
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Bacteriological water test kit
Correct Answer
A. DREL 2800Explanation
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.Rate this question:
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- 20.
If you ship your bacteriological water samples to an approved laboratory, what is the maximum time between collection and examination?
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12 hours
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24 hours
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36 hours.
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48 hours
Correct Answer
A. 24 hoursExplanation
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.Rate this question:
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- 21.
When should gas and vapor meters be field calibrated?
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Monthly
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After use
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Before use.
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Before and after use
Correct Answer
A. Before and after useExplanation
Gas and vapor meters should be field calibrated both before and after use to ensure accurate measurements. Calibration before use ensures that the meter is properly calibrated and ready to provide accurate readings. Calibration after use is important to verify that the meter has not been affected or drifted during the measurement process. By calibrating before and after use, any potential inaccuracies can be identified and corrected, ensuring reliable and precise measurements.Rate this question:
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- 22.
When should you take pH and chlorine measurements of the base swimming pool?
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Before anyone enters the pool
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During minimum load conditions
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During the busiest time of the day
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When requested by the swimming pool facility manager
Correct Answer
A. During the busiest time of the dayExplanation
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.Rate this question:
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- 23.
Which statement describes grab sampling?
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Sample collected over a period of time.
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Instantaneous sample to provide quick estimate
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Samples taken must be analyzed by a certified laboratory
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Samples taken to demonstrate compliance with health standards
Correct Answer
A. Instantaneous sample to provide quick estimateExplanation
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.Rate this question:
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- 24.
When calibrating a Photo Ionization Detector/Flame Ionization Detector (PID/FID), how many Tedlar sample bags need to be filled?
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None.
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One
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Three
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Eight.
Correct Answer
A. ThreeExplanation
When calibrating a Photo Ionization Detector/Flame Ionization Detector (PID/FID), three Tedlar sample bags need to be filled. This is because the calibration process requires the use of three different calibration gases to ensure accurate and reliable measurements. Each calibration gas is filled into a separate Tedlar sample bag, allowing the PID/FID to be calibrated at different concentration levels. This helps to establish a calibration curve and ensure the instrument's accuracy across a range of concentrations.Rate this question:
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- 25.
After the results from mass/volume concentration air sampling are received you find the results are reported in grams. Before you can use the formula to determine mass/volume concentration, you will have to convert the results reported in gram into what measure?
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Ml
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Mg
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M2. (its m squared, but I don't know how to type that... "sucks to your assmar")
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No conversion required.
Correct Answer
A. MgExplanation
The correct answer is mg, which stands for milligrams. Since the results are reported in grams, they need to be converted to milligrams before using the formula to determine mass/volume concentration. This conversion is necessary because milligrams are a smaller unit of measurement compared to grams, and it allows for more precise calculations when determining concentration.Rate this question:
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- 26.
What is the difference between the DOD and AF Assessment Models?
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There is no difference.
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The AF model is an “iterative” approach
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The DOD model does not include a control plan
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Each process is designed to yield different results
Correct Answer
A. The AF model is an “iterative” approachExplanation
Oh, its you againRate this question:
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- 27.
What sample media do you use for the Spread Plate Method?
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R2A Agar
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EC medium
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M-Endo broth
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M-FC medium
Correct Answer
A. R2A AgarExplanation
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.Rate this question:
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- 28.
According to American Industrial Hygiene Association (AIHA), the goal of random sampling is to
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Obtain data for documentation
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Produce results via a “shoot from the hip” method
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Produce a cyclical process for prioritizing controls needed
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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 assessmentExplanation
this seems pretty easy so far, don't fuk it upRate this question:
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- 29.
What key indicators are measured by indoor air quality monitors?
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Contaminants, saturation, and air flow
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Flammability, volume, and conductivity
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Compound(s), density, and metallic oxide
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Temperature, relative humidity, and carbon dioxide
Correct Answer
A. Temperature, relative humidity, and carbon dioxideExplanation
Indoor air quality monitors measure key indicators such as temperature, relative humidity, and carbon dioxide levels. These indicators are important in assessing the quality of the air indoors. Temperature can affect comfort levels and the growth of microorganisms, while relative humidity can impact the growth of mold and bacteria. Carbon dioxide levels are used to evaluate ventilation and the presence of pollutants from human activities. Monitoring these indicators helps identify potential air quality issues and allows for necessary actions to improve indoor air quality.Rate this question:
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- 30.
When you are sampling for solids, what is the maximum regulatory time the samples can be stored prior to analysis?
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28 days
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24 hours
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2–7 days
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0.25 hours
Correct Answer
A. 2–7 daysExplanation
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.Rate this question:
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- 31.
What are the most commonly used devices for particulate sampling?
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Filters
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Sorbent tubes
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Fritted bubblers
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Passive dosimeters
Correct Answer
A. FiltersExplanation
Filters are the most commonly used devices for particulate sampling because they are effective in capturing and retaining particles from the air. They can be made of various materials such as paper, glass fiber, or quartz, and are designed to trap particles of different sizes. Filters are easy to use, cost-effective, and can be analyzed in a laboratory to determine the concentration and composition of particulate matter. They are widely used in industries, research institutions, and environmental monitoring to assess air quality and evaluate the potential health risks associated with airborne particles.Rate this question:
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- 32.
Which device allows the collection of respirable sized particles?
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Fritted bubbler
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Sorbent tube.
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Cyclone
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Filters
Correct Answer
A. CycloneExplanation
A cyclone is a device that allows the collection of respirable sized particles. It works by using centrifugal force to separate the particles from the air stream. As the air enters the cyclone, it is forced to move in a circular motion, causing the heavier particles to be thrown outwards and collected in a separate container. This allows for the collection and analysis of particles that are of a size that can be inhaled and potentially cause respiratory issues.Rate this question:
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- 33.
Why is a single "blank" run sufficient as an operational check for the HAPSITE?
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The HAPSITE contains internal gas standards.
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The survey method completes calibration
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Additional peaks and a high background is indicated.
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Standby mode sufficiently calibrates the instrument.
Correct Answer
A. The HAPSITE contains internal gas standards.Explanation
The HAPSITE contains internal gas standards, which means that it is already calibrated and ready to be used. These internal gas standards ensure that the instrument is functioning properly and can accurately detect and analyze gases. Therefore, a single "blank" run is sufficient as an operational check for the HAPSITE because the internal gas standards within the instrument provide the necessary calibration.Rate this question:
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- 34.
Which of these is not a consideration when comparing analysis results to a standard?
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Ensure the correct laboratory analysis method was conducted
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Ensure the results are compared to the correct type of standard
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Ensure all individuals potentially affected are listed in supportive documentation
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Ensure the correct units of measurement for sample and standard are being used
Correct Answer
A. Ensure all individuals potentially affected are listed in supportive documentationExplanation
When comparing analysis results to a standard, it is important to ensure that all individuals potentially affected are listed in supportive documentation. This means that the documentation should include information about all the individuals who may be impacted by the analysis results. This consideration is important because it ensures that the analysis is comprehensive and takes into account all relevant individuals. The other considerations listed in the question (correct laboratory analysis method, correct type of standard, correct units of measurement) are also important, but they are not the answer to the question as they are all considerations when comparing analysis results to a standard.Rate this question:
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- 35.
In addition to being a required mandate, sampling is performed to
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Provide accurate documentation for reporting in DOEHRS
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Comprehensively complete a Conceptual Site Model (CSM).
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Increase confidence in characterizing and controlling potential threats
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Provide information to fill the “gaps” inherent in HRA data gathering
Correct Answer
A. Increase confidence in characterizing and controlling potential threatsExplanation
come on nowRate this question:
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- 36.
When collecting potable water samples for bacteriological analysis, you should adhere to all of the following guidelines except which one?
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Never hold the bottle by the neck
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Always used good personal hygiene
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Never lay the bottle down on the ground
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Always flush out the bottle before taking the sample
Correct Answer
A. Always flush out the bottle before taking the sampleExplanation
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.Rate this question:
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- 37.
Drinking water with a high pH level (above 8.5) indicates to you the water
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Is soft
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Is corrosive.
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Is a health risk.
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Can cause aesthetic problems
Correct Answer
A. Can cause aesthetic problemsExplanation
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.Rate this question:
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- 38.
Which is a portable gas chromatograph designed for response situations where "on-scene" detection, identification and quantification of chemical warfare agents and toxic industrial is
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Photoionization (PID).
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Indirect reading instrument
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Flame ionization detectors (FID).
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Hazardous Air Pollutants on Site (HAPSITE).
Correct Answer
A. Hazardous Air Pollutants on Site (HAPSITE).Explanation
The correct answer is Hazardous Air Pollutants on Site (HAPSITE). HAPSITE is a portable gas chromatograph that is specifically designed for response situations where "on-scene" detection, identification, and quantification of chemical warfare agents and toxic industrial chemicals is required. It is used to analyze air samples for hazardous air pollutants and provides quick and accurate results in the field. HAPSITE is a reliable tool for first responders and emergency personnel to assess the presence of dangerous substances in real-time.Rate this question:
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- 39.
Blank samples are prepared and shipped along with air samples to
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Measure the effects of temperature and pressure changes during shipping
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Measure the effects of temperature and pressure changes during the sampling process.
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Determine if any contamination occurred after calibrating the sampling pumps and before sampling began
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Determine if any contamination occurred from the time the media was opened until the time it reached the laboratory.
Correct Answer
A. Determine if any contamination occurred from the time the media was opened until the time it reached the laboratory.Explanation
The correct answer is to determine if any contamination occurred from the time the media was opened until the time it reached the laboratory. This is because the blank samples are prepared and shipped along with air samples to specifically check for any contamination that may have occurred during the transportation process. By comparing the results of the blank samples with the air samples, any potential contamination can be identified and accounted for in the analysis.Rate this question:
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- 40.
Remediation sampling is conducted to determine
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The extent of contamination before any cleanup is conducted
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If any contamination exists after a cleanup process
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The need for personnel protective equipment
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If there are any hazards to personnel
Correct Answer
A. If any contamination exists after a cleanup processExplanation
Remediation sampling is conducted to determine if any contamination exists after a cleanup process. This is important because it helps to ensure that the cleanup process was effective in removing the contamination. By conducting remediation sampling, it is possible to identify any remaining contamination and take further action if necessary. This can include additional cleanup measures or implementing preventive measures to prevent further contamination. Overall, remediation sampling is a crucial step in the cleanup process to ensure that the area is safe and free from contamination.Rate this question:
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- 41.
Why are proper protocol and preservation guidelines important elements of a quality assurance/ quality control (QA/QC) program?
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These ensure water data is accurate and useful
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These eliminate the need for field quality control samples
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These affect the reporting procedures required
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These eliminate the need for equipment calibration
Correct Answer
A. These ensure water data is accurate and usefulExplanation
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.Rate this question:
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- 42.
When determining the collection volume for an air sample, you would opt to collect less volume of air when
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Media collection efficiency is low
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Media collection efficiency is high
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Concentrations are expected to be low
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Concentrations are expected to be high.
Correct Answer
A. Concentrations are expected to be high.Explanation
When concentrations are expected to be high, it is advisable to collect less volume of air. This is because high concentrations can lead to saturation of the collection media, resulting in the loss of sample integrity and accuracy. By collecting less volume of air, the collection media can effectively capture and retain the high concentrations, ensuring reliable and representative results.Rate this question:
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- 43.
What item must be field checked but cannot be calibrated?
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Toxic gas monitors
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Personal sampling pumps
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Hand-held sampling pump
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Combustible gas monitors
Correct Answer
A. Hand-held sampling pumpExplanation
Hand-held sampling pumps must be field checked to ensure they are functioning properly and providing accurate samples. However, they cannot be calibrated because they do not have adjustable settings or mechanisms that can be calibrated. Calibration is the process of adjusting and setting the parameters of a device to ensure its accuracy. Since hand-held sampling pumps do not have this capability, they cannot be calibrated.Rate this question:
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- 44.
What are the two types of augers?
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Bucket and screw
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Trowel and shovel
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Split spoons and push tube
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Veihmeyer tube and trier sampler
Correct Answer
A. Bucket and screwExplanation
The two types of augers mentioned in the answer are bucket and screw. Augers are tools used for drilling holes in the ground or other materials. A bucket auger is designed with a hollow cylinder and a cutting edge at the bottom, allowing it to collect soil or other materials as it is rotated. A screw auger, on the other hand, has a spiral-shaped blade that helps in pushing the soil or material out of the hole as it is drilled. These two types of augers are commonly used in various industries for different purposes.Rate this question:
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- 45.
The purpose of establishing an Immediately Dangerous to Life or Health (IDLH) exposure concentration is to
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Ensure the Maximum Contaminant Level Goal (MCLG) is enforced
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Determine which Acute Exposure Guideline Levels (AEGL) exposure level has been reached
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Ensure the worker can escape from a contaminated environment without irreversible health effects.
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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 surviveRate this question:
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- 46.
In the liquid sampling quality assurance/ quality control (QA/QC) process, what is the difference between trip blanks and equipment blanks?
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Equipment blanks contain preservatives
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Trip blanks are provided by the laboratory
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Trip blanks only measure the temperature of the blank
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Equipment blanks are analyzed differently than other samples
Correct Answer
A. Trip blanks are provided by the laboratoryExplanation
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.Rate this question:
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- 47.
If you sample for 7 hours of a 10 hour shift and can document that the worker is never exposed during the remaining three hours, you should calculate the time weighted average using which value?
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3 hours
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7 hours.
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8 hours
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10 hours.
Correct Answer
A. 10 hours.Explanation
The time weighted average should be calculated using the value of 10 hours because the worker is still considered to be potentially exposed during the remaining three hours of the shift, even though no exposure was documented. The calculation takes into account the entire duration of the shift to accurately assess the average exposure over time.Rate this question:
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- 48.
What is a primary benefit of field analysis?
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Completes chain of infection
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Indicates what equipment should be used
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Indicates where possible contamination exists
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Provides pictorial view of sampling area
Correct Answer
A. Indicates where possible contamination existsExplanation
Field analysis is beneficial because it indicates where possible contamination exists. This means that by conducting a field analysis, one can identify areas or sources that may be contaminated, allowing for targeted interventions and preventive measures to be implemented. This can help in minimizing the spread of contaminants and ensuring the safety and quality of the environment or samples being analyzed.Rate this question:
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- 49.
The development of your flight’s Environmental Sampling Analysis and Monitoring Plan is based on
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The criteria provided to you by civil engineering
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The requirements provided by your MAJCOM BE
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The historical performance of your drinking water system
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The regulatory requirements for your drinking water system
Correct Answer
A. The regulatory requirements for your drinking water systemExplanation
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.Rate this question:
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Feb 13, 2017Quiz Created by
Stewie
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