Minor Alteration No. WA2025034 – Geotechnical Drilling Exploration for Yolo Bypass Wildlife Area Physical Improvements Project
2 Documents in Project
Summary
SCH Number
2024050054
Public Agency
Central Valley Flood Protection Board
Document Title
Minor Alteration No. WA2025034 – Geotechnical Drilling Exploration for Yolo Bypass Wildlife Area Physical Improvements Project
Document Type
NOE - Notice of Exemption
Received
Posted
10/8/2026
Document Description
To perform geotechnical investigations activities. The proposed investigations include 24 boreholes and one test pit within the existing roadways and parking areas in the Yolo Bypass Wildlife Area. Construction activities will include clearing and grubbing of existing vegetation or pavement removal in the work areas and ground disturbance by a truck-mounted drill rig and equipment to drill and backfill the boreholes. The exploration activities consist of drilling 8.25-inch diameter geotechnical exploration hollow stem borings drilled to maximum depth of 80 feet, or to refusal, below existing ground, and excavating a 3-feet wide, 5-feet long, and 8-feet deep test pit. Soil samples will be collected using Standard Penetration Tests, Shelby tube sampling, and cuttings from the test pit. The boreholes will be backfilled with grout the same day of drilling, placed to depth by a tremie. The test pit will be backfilled with the excavated spoils. The backfill shall will be in accordance with County Standards and California Code of Regulations, Title 23, Waters, Division 1, (Title 23) standards.
Contact Information
Name
Jordan Robbins
Agency Name
Central Valley Flood Protection Board
Job Title
Senior Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Name
Grant Thornton
Agency Name
Department of Water Resources
Job Title
Unit Manager, HREC
Contact Types
Lead/Public Agency / Project Applicant
Phone
Location
Coordinates
Cities
Not within a city
Counties
Yolo
Regions
Northern California
Waterways
Yolo Bypass
Other Location Info
The project is located in the Yolo Bypass at 24 boreholes and one test pit, from 38.5631°, -121.6378° to 38.4650°, -121.6320° within Yolo County.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15306
Reasons for Exemption
The Board has determined that the project activities within the Board's authority are exempt from CEQA pursuant to the Class 6 (Information Collection) categorical exemption (California Code of Regulations, title 14, section 15306). The project qualifies for this exemption because it involves information collection, research, or resource evaluation activities that do not result in a serious or major disturbance to an environmental resource.
Exempt Status
Categorical Exemption
Type, Section or Code
15304
Reasons for Exemption
And, the Board has determined that the project activities within the Board's authority are exempt from CEQA pursuant to the Class 4 (Minor Alterations to Land) categorical exemption (California Code of Regulations, title 14, section 15304). The project qualifies for this exemption because it involves minor alterations in the condition of land, water, and/or vegetation which does not involve removal of healthy, mature, scenic trees except for forestry or agricultural purposes. The Board further finds that none of the exceptions to the categorical exemptions set forth in California Code of Regulations, title 14, section 15300.2 apply.
County Clerk
Yolo
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.