NM CID GF-5 Practice Questions - New Mexico CID GF-5 Recreation Areas Contractor Examination Exam

When must the atmosphere in an excavation be tested before employees enter, under OSHA 1926.651(g)?

Only in tunnels classified as confined spaces Where oxygen deficiency or a hazardous atmosphere could reasonably be expected, including excavations greater than 4 feet in such locations Never, because trenches are always open to the air Only if the trench is deeper than 20 feet

Correct Answer:

Where oxygen deficiency or a hazardous atmosphere could reasonably be expected, including excavations greater than 4 feet in such locations

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