Explore damage prevention information, local contacts and rules for safe digging in Washington, D.C.
One Call Centers
Address:7223 Parkway Drive
Hanover MD 21076
Hours:M - F 0700 - 1700 Emergency Ticket: 24/7
Advance Notice:2 business 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:15 business days
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.