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Questions and Answers
What does the value of E represent in the context of exposure to contaminants?
What does the value of E represent in the context of exposure to contaminants?
- A factor that must not exceed 1.0 (correct)
- A measure of the maximum contamination level permissible
- The concentration of the contaminant found in the Z tables
- The exposure limit for the particular contaminant
What does the ceiling limit for a toxic substance represent?
What does the ceiling limit for a toxic substance represent?
- Average concentration over a work shift
- Maximum exposure allowed for any amount of time (correct)
- Variable concentration based on exposure time
- Minimum concentration to avoid regulatory fines
How is the exposure level to mixtures of contaminants determined?
How is the exposure level to mixtures of contaminants determined?
- Multiplying the concentration by the exposure limit
- Selecting the highest concentration as the exposure limit
- Dividing the concentration by the exposure limit
- Adding the exposure limits of the individual contaminants (correct)
What does 8-hr TWA PEL stand for in the context of exposure to contaminants?
What does 8-hr TWA PEL stand for in the context of exposure to contaminants?
When using the formula for mixtures of contaminants, what does a result like 0.925 imply?
When using the formula for mixtures of contaminants, what does a result like 0.925 imply?
What is the purpose of Table Z-2 in determining exposure to contaminants with ceiling values?
What is the purpose of Table Z-2 in determining exposure to contaminants with ceiling values?
What does 1910.1000(b)(1) specify about employee exposure to substances listed in Table Z-2?
What does 1910.1000(b)(1) specify about employee exposure to substances listed in Table Z-2?
What does the 8-hour time weighted average limit in Table Z-2 define?
What does the 8-hour time weighted average limit in Table Z-2 define?
Why do ceiling limits manifest differences from other standardized exposure limits?
Why do ceiling limits manifest differences from other standardized exposure limits?
What does the formula (500/1,000 + 45/200 + 40/200) = 0.925 indicate about the exposure levels?
What does the formula (500/1,000 + 45/200 + 40/200) = 0.925 indicate about the exposure levels?
