A quality inspector witnesses a crew member backfilling a conduit trench without the required 4 inches of sand bedding beneath the conduit. The correct response is to:
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A
Allow it to continue since sand is optional in dry soil conditions
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B
Stop the work, issue a non-conformance, and require the trench to be excavated to the correct depth
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C
Document it and require sand to be added at the next available opportunity
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D
Ask the crew lead if a variance was previously approved