American River Watershed Common Features 2016 – Geotechnical Borings


SCH Number
Public Agency
Central Valley Flood Protection Board
Document Title
American River Watershed Common Features 2016 – Geotechnical Borings
Document Type
NOE - Notice of Exemption
Document Description
Information gathered through the geotechnical borings would be used to support engineering design of the future American River Common Features 2016 Project, Sacramento Weir Widening. Geotechnical borings will be conducted using a tire mounted mud rotary drilling rig with a support truck and several crew trucks to transport crew and supplies. Samples will be collected and taken off-site for analysis. Drill holes will be backfilled with a bentonite slurry.

Contact Information

Miles Claret
Agency Name
Central Valley Flood Protection Board
Contact Types
Lead/Public Agency


West Sacramento
Other Location Info
The proposed project is located immediately northwest of West Sacramento near the existing Sacramento Weir and Sacramento Bypass in Yolo County. The U.S. Army Corps of Engineers would conduct approximately 8 geotechnical borings. Approximately 2 borings would occur immediately east of Old River Road near the large gravel pullout adjacent to the upstream end of the Sacramento Weir. Approximately 2 borings would occur on the landside toe of the Sacramento Bypass north levee. Approximately 2 borings would be conducted within the Sacramento Bypass just downstream of the weir. Approximately 2 borings would occur north of the old Bryte Landfill near County Road 126. The specific number and location of borings would be determined in the field.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15304, Minor Alterations to Land
Reasons for Exemption
The project consists of subsurface data collection and will not result in any significant impacts to the environment. There would be no in water work. Woody vegetation will not be affected. The work would not impact state or federally listed species. Best management practices will be utilized to avoid impacts to the environment, including stormwater runoff control, preventing the entrapment of animals, and spill prevention measures. Depending on the determined location of each boring, pre-construction nesting bird surveys would be conducted as necessary prior to drilling activities and a suitable construction-free buffer would be established around any active nest. A qualified biological monitor would monitor activities if work must occur within the buffet. Borings would be backfilled upon completion and the sites would be restored to preproject conditions.


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