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NGA 71 Operator Excavating And Backfilling In The Vicinity Of A Pipeline (Critical AOC) Practice Test

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How many days after you call 811 are you allowed to start work?
Correct Answer:
Third working day after notification
Explanation:
After you call 811, you’re expected to wait for the utility lines to be located and marked before you start digging. The allowed start time is on the third working day after notification. This gives the utility companies two full business days to respond and mark their lines, plus one more day to review the markings and proceed safely. For example, if you call on Monday, you can start on Thursday. Starting earlier (the next day or the same day) wouldn’t give enough time for markings, and waiting five working days is longer than the standard requirement. The markings and safe distances from them protect you and the existing underground infrastructure from damage.

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