NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

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Before employees enter a 5-foot-deep storm-sewer manhole excavation where a hazardous atmosphere could reasonably be expected, OSHA 1926.651(g) requires testing. Oxygen is acceptable when it is at least:

16.0 percent 23.5 percent as a minimum 19.5 percent 25.0 percent

Correct Answer:

19.5 percent

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