Engineering Geotechnical Studies for the Bay Delta Conservation Plan and/or Preliminary Engineering Studies for the Delta Habitat Conservation and Conveyance Pr
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Summary
- SCH Number
- 2010062041
- Lead Agency
- Water Resources, Department of (California Department of Water Resources)
- Document Title
- Engineering Geotechnical Studies for the Bay Delta Conservation Plan and/or Preliminary Engineering Studies for the Delta Habitat Conservation and Conveyance Pr
- Document Type
- NOD - Notice of Determination
- Received
- Document Description
- The project is limited to ~80 overwater borings, approximately 220 paired geotechnical borings, cone penetrometer soundings, and ~30 small test pits to test soils to obtain geotechnical data. 50 overwater geotechnical borings will take place in the Sacramento River to obtain information for 5 proposed intake structures. Approximately 20 overwater borings are planned at 12 major water crossings. An additional 5 to 12 geotechnical borings are proposed to obtain information for docking facilities. The depths of the borings will range between 100 and 200 ft deep below the bottom of the river and the diameter of the borings will be 3.5 to 5.5 inches. Drilling will be conducted with a rotary drilling rig mounted on a shallow-draft barge or ship. Multiple barges/ships may be operated concurrently. Upon completion of each hole, the borings will be grouted from the bottom of the borehole to within 10-15 ft of the top of the hole with 5% by weight bentonite and 95% by weight cement grout. The project is located throughout the Sacramento-San Joaquin Delta in the Counties of Sacramento, Yolo, San Joaquin, Contra Costa, and Solano.
- Contact Information
-
Andrea Boertien
California Department of Fish and Game
Bay Delta Region P.O. Box 47`
Yountville, CA 94599
209-942-6070
Location
- Counties
- Yolo Solano San Joaquin Sacramento Contra Costa
- Parcel #
- Various
- State Highways
- Hwy 4, 5, 12, 160, 220
- Waterways
- Various
- Section
- Multi
- Other Location Info
- City/Nearest Community: Sacramento-San Joaquin Delta
Notice of Determination
- Approving Agency
- DFG
- Approving Agency Role
- Responsible Agency
- Approved On
- Final EIR Available Location
- DWR 7329 Silverado Trail Napa, CA 94558
Determinations
- (1) The project will have a significant impact on the environment
- No
- (2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
- No
- (2b) A Negative Declaration was prepared for this project pursuant to the provisions of CEQA
- Yes
- (3) Mitigated measures were made a condition of the approval of the project
- N/A
- (4) A Statement of Overriding Considerations was adopted for this project
- N/A
- (5) Findings were made pursuant to the provisions of CEQA
- N/A