Montana Hydrovac & Excavation Regulations
Excavation laws, 811 requirements, and licensing information for Montana.
Montana requires excavators to contact Montana 811 at least 2 business days before any digging activity. The Montana Underground Facilities Protection Act establishes the state's damage prevention framework.
Hydrovac excavation is essential in Montana for pipeline and utility work across vast rural areas and in growing urban centers like Billings and Missoula. Rocky terrain and extreme weather conditions make non-destructive methods advantageous.
Call Before You Dig: Montana 811
Phone: 811 | Notice Required: 2 business days
Visit Montana 811 WebsiteTolerance Zone
Excavators must use reasonable care and hand methods within 18 inches of marked facilities.
Key Regulations
Underground Facilities Protection Act
Requires pre-excavation notification and establishes safe digging practices.
MCA 69-4-501 et seq.
Locate Validity
Utility markings are valid for 30 calendar days from the date of the locate request.
Pipeline Proximity Rules
Additional safety requirements for excavation near high-pressure transmission pipelines.
Penalties for Violations
Montana imposes penalties for failure to notify or for damaging facilities.
Maximum Fine: $5,000
- ●Civil liability for repair costs
- ●Potential misdemeanor charges for willful violations
Licensing Requirements
- Montana contractor registration for applicable work
- Local business license and permits
- Workers compensation and general liability insurance
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