Call 811 Call 811



Explore damage prevention information, local contacts and rules for safe digging in Navada.

One Call Centers

811 or


4090 Nelson Avenue
Suite A
Concord CA 94520-1232


M - F 0600 - 1900

Advance Notice:

2 working days, but not more than 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:

28 calendar days or when marks are no longer resaonably visible
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.