JEPA Amendment 9 – December 19, 2024
December 31, 2024
DCA Health, Safety and Security Policy
April 3, 2025
Soil Testing Fact Sheet
- Version
- File Count 1
- File Size 520 KB
- Create Date March 25, 2025
- Last Updated May 11, 2026
The construction of an approximately 45-mile main tunnel and its supporting facilities first starts with understanding the soil conditions. Soil testing is important to refining the design of the components comprising the Delta Conveyance Project. Soil testing is also essential to designing tunnel boring machines with the appropriately designed cutterheads and lining systems tailored to the unique soil conditions that will be encountered along the tunnel alignment as well as to fine-tuning the designs of the Delta Conveyance Project’s two intake structures on the Sacramento River and new facilities in the South Delta to connect to the existing State Water Project. The Delta Conveyance Design and Construction Authority (DCA), working at the direction of the Department of Water Resources (DWR), is conducting the soil exploration testing that will provide new knowledge of the region’s geology.