AL Water Projects Practice Questions - Alabama Water Projects Contractor Examination Exam

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Before workers enter a water excavation more than 4 feet deep where an oxygen deficiency or hazardous atmosphere could reasonably be expected, what must be done?

Issue dust masks and continue Test the atmosphere before employees enter Wait 10 minutes with no testing if the trench is open to the sky Test only if a worker already feels dizzy

Correct Answer:

Test the atmosphere before employees enter

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