New York State Asbestos Investigator Practice Exam

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What is the maximum asbestos fiber concentration allowed during an excursion limit sampling period?

0.5 f/cc for 60 minutes
1.0 f/cc for 30 minutes
0.8 f/cc for 30 minutes
0.1 f/cc for 8 hours

The correct answer is: 1.0 f/cc for 30 minutes

The maximum asbestos fiber concentration allowed during an excursion limit sampling period is established to protect workers from excessive exposure to asbestos fibers, which can pose serious health risks. The correct concentration limit is 1.0 fibers per cubic centimeter (f/cc) for a duration of 30 minutes. This standard is designed to allow for short-term increases in exposure while still providing a protective limit that should not be exceeded during any 30-minute sampling period. In practical terms, the excursion limit recognizes that while continuous and long-term exposure to lower concentrations of asbestos is harmful, there are situations where temporary higher concentrations can occur. By stipulating this 30-minute limit at 1.0 f/cc, regulations aim to establish a buffer that accounts for brief exposure spikes rather than allowing for indefinite higher levels which could lead to severe health issues over time. This careful balance helps ensure worker safety in environments where asbestos may be present.