California Code of Regulations
Title 23 - Waters
Division 2 - Department of Water Resources
Chapter 6 - Encroachments
Article 6 - Requirements for Specific Types of Encroachments
Section 612.66 - Utility Crossing the State Water Project's Underground Pipelines

(a) The applicant shall submit for review and approval by the Department the procedures, excavation plans, schedules, and type and weight of the construction equipments to be used for crossing the State Water Project's pipeline.

(b) All utilities crossing a State Water Project's pipeline shall be in a corrosion-protected and self-supported 5/16-inch minimum thickness steel casing pipe at least four (4) inches larger than the carrier pipe.

(c) In areas where open excavation may be used to expose the State Water Project's pipeline, the casing shall span over the limits of the open excavation plus additional bearing length on both sides of the excavation based on the physical characteristics of the soil.

(d) In areas where shoring may be used to expose the State Water Project's pipeline, the casing shall span over the pipeline plus a minimum of six (6) feet and any additional bearing length required based on the physical characteristics of the soil on each side of the pipeline, measured perpendicularly to the pipeline.

(e) All utility crossings under the State Water Project's pipeline shall be performed by using the boring/jacking method. The gap between the borehole and the casing shall be filled with cement grout. The annular space between the casing and the utility shall be filled with cement slurry.

(f) For utilities crossing above or under the State Water Project's pipeline, the minimum vertical clearance between the casing of the utility and State Water Project's pipeline shall be three (3) feet.