4005 Port Chicago Hwy
Concord, CA 94520
Minimum 2 working days with a maximum of 14 calendar days
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.
Marks Valid: While the marks are reasonably visible with a valid ticket (tickets valid 28 days)
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.