Soil Investigations for Data Collection in the Delta

10 Documents in Project

Summary

SCH Number
2019119073
Lead Agency
California Department of Water Resources (DWR)
Document Title
Soil Investigations for Data Collection in the Delta
Document Type
NOD - Notice of Determination
Received
Posted
2/7/2022
Document Description
On or about July 9, 2020, the California Department of Water Resources (“DWR”) (1) adopted a Mitigated Negative Declaration (“MND”) pursuant to the California Environmental Quality Act (“CEQA”) for the Soil Project; and (2) approved the Soil Project. Subsequently, on or about February 19, 2021, DWR adopted an Addendum to the MND, which analyzed proposed changes to the Soil Project including a refinement of the soil investigation sites at issue in the Soil Project. The Soil Project entails the conducting of soil investigations for the purpose of measuring physical properties of the soils, analyzing the location of the groundwater table, and studying other typical geologic and geotechnical parameters that will be used to inform and evaluate alternatives, consistent with Executive Order N-10-19, for a proposed single tunnel Delta conveyance project (requiring separate environmental review under CEQA), consistent with Governor Gavin Newsom’s new approach to modernize Delta water conveyance. The primary objective of the Soil Project is to determine the composition, location, and geotechnical properties of soil materials commonly found in the Delta which would inform the design, environmental analysis, and development of alternatives for a potential Delta conveyance project and to increase DWR’s overall understanding of Delta geology. The planned work includes overwater and land-based soil borings, cone penetration tests (CPTs), and geophysical surveys. On or about January 20, 2022, the Delta Conveyance Design and Construction Joint Powers Authority approved a professional services agreement (“Agreement”) for geotechnical exploration and reporting services in connection with the Soil Project.

Contact Information

Name
Graham Bradner
Agency Name
Delta Conveyance Design and Construction Joint Powers Authority
Job Title
Executive Director
Contact Types
Responsible Agency

Location

Counties
Alameda, Contra Costa, Sacramento, San Joaquin, Solano, Yolo
Regions
Northern California
Other Location Info
The planned work for the Soil Project will occur within the legal Delta in Alameda, Contra Costa, Sacramento, Solano, San Joaquin, and Yolo Counties. More specifically, the study area at issue in the Soil Project includes a portion of the Sacramento-San Joaquin River Delta, encompassing the area from south of the City of West Sacramento to just north of Bethany Reservoir, and stretches from east of Interstate 5 to west of State Route 160 (River Road).

Notice of Determination

Approving Agency
Delta Conveyance Design and Construction Joint Powers Authority
Approving Agency Role
Responsible Agency
Approved On
County Clerks
Alameda, Contra Costa, Sacramento, San Joaquin, Solano, Yolo
Final Environmental Document Available at
Delta Conveyance Design and Construction Joint Powers Authority, 980 9th Street, Suite 2400, Sacramento, CA 95814

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 Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes

Attachments

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