2.13 Trenchless Excavation

Excavator Designer

Practice Statement:

All stakeholders adhere to all best practices and the following general guidelines prior to, during, and after any trenchless excavation (as applicable).

Practice Description:

  • The project owner and design engineer take prudent measures to make the determination to use trenchless excavation installation.
  • The project owner and design engineer coordinate with facility owners to design projects that maintain minimum radial clearances between the new facility and existing facilities. Minimum clearances are equal to or greater than applicable standards.
  • The project owner and design engineer establish line and grade of the proposed excavation to maintain the established minimum clearances. (See also Best Practices 4–19 and 5–29).13


See Appendix D


One Call Center One Call Center

Facility Owner Facility Owner

Excavator Excavator

Locator Locator

Project Owner Project Owner

Designer Designer