CSLB C-36 Plumbing ContractorPlanning and EstimatingMedium
A plumbing contractor is preparing to install a new natural gas line to a commercial kitchen. The plans specify a 2-inch black steel pipe. Before trenching, the contractor must contact the appropriate utility notification center. In California, what is the minimum advance notice required before excavation begins?
- A24 hours
- B2 working days
- C6 hours
- D5 working days
Show answer & explanationAnswer & explanation
Correct answer: B. 2 working days
California law (Government Code Section 4216.2) requires excavators to notify the regional notification center (DigAlert or Underground Service Alert) at least two working days, but not more than 14 calendar days, before starting any excavation.
Why the other options are wrong
- A. While a common duration in some contexts, 24 hours is not the minimum for excavation notification in California.
- C. This is insufficient notice and would violate state regulations.
- D. Five working days is within the allowed window but not the minimum required notice.
DigAlert / Underground Service Alert (USA North)
A free service in California that processes excavation requests and notifies member underground utility owners to mark their lines before digging.
- Mandated by California Government Code Section 4216.2.
- Requires a minimum of two working days' notice before excavation.
- Protects underground utilities and ensures public safety.
Memory trick: Two days to dig, two ears to listen.