Wyoming Hydrovac & Excavation Regulations
Excavation law, 811 notice rules, tolerance zone and penalties for Wyoming, with citations to the statutes and the one-call center.
Last reviewed October 18, 2026. General information only, not legal advice. Laws change and vary by locality and utility, so always contact 811 and confirm current requirements before you dig. Read the disclaimer
Wyoming at a Glance
Call 811 before you dig
- One-call center
- One-Call of WyomingVisit website for One-Call of Wyoming (opens in a new tab)
- Phone
- 811
- Notice required
- At least 2 full business days but no more than 14 business days before excavation. Re-notify each 14-business-day period on long projects.
- Tolerance zone
- 24 inches
- Ticket life
- 14 business days; renew each 14 business day period
- Maximum penalty
- $75,000. An excavator who fails to comply and damages a facility faces up to $5,000 for a first offense, up to $25,000 for a second within 12 months, and up to $75,000 for more than two within 12 months. There is a flat $5,000 for failing to notify the center and up to $5,000 per false emergency locate.
Wyoming requires excavators to notify One-Call of Wyoming at least 2 full business days but not more than 14 business days before excavating, and to re-notify every 14 business days on longer projects. The law is the Wyoming Underground Facilities Notification Act, W.S. 37-12-301 et seq.
Reasonable care in the tolerance zone requires hand digging or soft digging as necessary.
Tolerance Zone
24 inches
Operators mark within 24 inches horizontally from the exterior sides of the facility. Reasonable care requires hand digging or soft digging as necessary (W.S. 37-12-302(g)).
Key Regulations
Wyoming Underground Facilities Notification Act
Requires notice before excavation and sets safe digging standards.
Citation: W.S. 37-12-301 et seq.
Locate Request Validity
Locate requests are valid for 14 business days; renewal required for continued work.
Citation: W.S. 37-12-302(c)
Penalties for Violations
Civil penalties apply to excavators who fail to comply and damage a facility.
Maximum penalty: $75,000. An excavator who fails to comply and damages a facility faces up to $5,000 for a first offense, up to $25,000 for a second within 12 months, and up to $75,000 for more than two within 12 months. There is a flat $5,000 for failing to notify the center and up to $5,000 per false emergency locate.
- Possible court-ordered excavation safety training on a first offense
- Liability for repair costs and damages (W.S. 37-12-306(h)(iv))
Licensing and Permits to Confirm
Licensing depends on the type of work and the city or county. Treat these as items to check with the Wyoming licensing board and your local permit office before bidding work.
- Local contractor licensing and permit requirements, which vary by city and county
- Municipal permits and business licenses where required
- Workers compensation and liability insurance as required by law and by contract
Sources
Last reviewed October 18, 2026. Facts on this page were checked against these statutes, rules and one-call center pages.
Disclaimer
This guide is general information about state excavation and one-call (811) laws. It is not legal advice, and reading it does not create an attorney-client relationship.
Laws, rules and one-call center procedures change, and requirements can differ by city, county, utility operator and type of work. Facility operators may also set their own requirements. Before any excavation, contact the state one-call center through 811 and confirm current requirements in the statute and rules cited on this site. For questions about your obligations or liability, consult the statute directly or a licensed attorney in the state where the work takes place.
Hydrovac News makes no warranty that this information is complete, current or accurate, and is not liable for any loss or damage resulting from reliance on it.
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