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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.

Which would it be prudent to accomplish if the time weighted average (TWA) is already above the occupational and environmental exposure limit (OEEL)?

• Resample and recalculate TWA.

• Compute the compliance factor.

• Calculate the lower confidence limit (LCL).

• Re-calculate the upper confidence limit (UCL).

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.

Which of these is not a consideration when comparing analysis results to a standard?

• Ensure the correct laboratory analysis method was conducted.

• Ensure the results are compared to the correct type of standard.

• Ensure all individuals potentially affected are listed in supportive documentation.

• Ensure the correct units of measurement for sample and standard are being used.

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).

When considering the type of analysis and sampling goal for environment health data, what strategy is used for identifying changes over time?

• Collect multiple samples at a single location over time.

• Collect multiple samples over an area.

• Develop a time series plot.

• Develop a scatter plot.

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.

Fluid transfer is best accomplished using

• Pasteur pipet.

• 40 ml glass vial.

• Cubitainer sampler.

• Whirl-Pak sample bag.

Which statement describes grab sampling?

• Sample collected over a period of time.

• Instantaneous sample to provide quick estimate.

• Samples must be analyzed by a certified laboratory.

• Samples taken to demonstrate compliance with health standards.

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.