SC Water And Sewer Plants Practice Questions - South Carolina Water And Sewer Plants Contractor Examination Exam

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In excavations greater than 4 feet deep where a hazardous atmosphere could reasonably be expected—such as next to existing process tanks or sewers—what does OSHA 1926.651 require before employees enter?

No atmospheric testing; only a visual look for water Testing of the atmosphere before entry Testing only if the excavation is also a permit-required confined space by definition Testing only at the end of the shift

Correct Answer:

Testing of the atmosphere before entry

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