"... 5. Marking Tape. During backfilling, install marking tape 2 feet above the water main. Use non-detectable tape with a minimum width of 5 inches. Use blue tape with the words “CAUTION, WATER LINE BELOW” imprinted on the tape in black capital letters."
Call: 811 (Local) or 800-795-0555
Click: https://www.ndonecall.com/
