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The tolerance zone is a critical buffer for safe digging. Excavators are required to maintain a minimum clearance from the approximate locate. This minimum distance is referred to as the tolerance zone which is defined as not more than 24 inches from the outside dimensions of the underground utility

This practice helps prevent damage and ensures safety.

In Kansas, locate requests must be submitted at least 2 full working days before digging but no more than 5 working days in advance.

This window helps ensure utility lines are properly marked and still visible when your project begins.

Additionally, every contractor must have their own locate request.

Submit your request online at Kansas811.com when the time is right.

A locate request to Kansas 811 only results in public utility lines being marked, not private lines.

Private lines may include:
- Underground sprinkler systems
- Propane or private gas lines
- Landscape lighting wiring
- Invisible pet fences

If you’re digging near private utilities, you’ll need to hire a private utility locator to ensure everything is marked before you break ground. Taking this extra step helps prevent costly damage and ensures a safer worksite.https://kansas811.com/resources/private-utility-locating-services/

Monday, May 25, 2026 ( ) will not count towards your standard notice required when filing a locate request, so please plan accordingly.

Q: Do I need to contact 811 if I hired a contractor to do the digging?

A: The individual or contractor performing the digging/excavation is responsible for contacting 811. Though if you’ve hired a contractor, it’s wise to CONFIRM that contacting 811 is part of their plan and that underground utilities will be/have been located prior to digging.
Safe digging is a shared responsibility. If there’s digging, make sure Kansas 811 is involved.