California Hydrovac & Excavation Regulations
Excavation laws, 811 requirements, and licensing information for California.
California has some of the most comprehensive excavation safety laws in the nation, administered through Underground Service Alert (USA). The state requires excavators to contact 811 at least 2 working days before digging.
Hydrovac excavation is extensively used in California due to strict environmental regulations and dense urban utility networks. The state's Government Code Section 4216 provides detailed requirements for all excavation activities.
Call Before You Dig: Underground Service Alert (USA)
Phone: 811 | Notice Required: 2 working days
Visit Underground Service Alert (USA) WebsiteTolerance Zone
Hand excavation or non-destructive methods required within 24 inches of marked subsurface installations.
Key Regulations
Government Code Section 4216
Primary excavation safety law requiring notification and establishing tolerance zones and marking standards.
Cal. Gov. Code 4216-4216.25
Senate Bill 661 (2014)
Strengthened excavation safety enforcement with investigation board and penalty authority.
SB 661
Vacuum Excavation Standards
Non-destructive excavation methods like hydrovac are recognized as approved methods within tolerance zones.
Penalties for Violations
California imposes significant penalties for excavation violations.
Maximum Fine: $100,000
- ●Criminal penalties for willful violations
- ●Mandatory reporting to state investigation board
Licensing Requirements
- California State Contractors License Board (CSLB) license with appropriate classification
- City and county business licenses as required
- Minimum $1 million liability insurance per CSLB requirements
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