American River Watershed Common Features, American River Contracts 3b & 4a: Geotechnical and Environmental Surveys
55 Documents in Project
Summary
SCH Number
2005072046
Public Agency
Central Valley Flood Protection Board
Document Title
American River Watershed Common Features, American River Contracts 3b & 4a: Geotechnical and Environmental Surveys
Document Type
NOE - Notice of Exemption
Received
Posted
11/24/2021
Document Description
The U.S. Army Corps of Engineers (USACE), in coordination with the Department of Water Resources (DWR), the Central Valley Flood Protection Board (CVFPB), and the Sacramento Area Flood Control Agency (SAFCA), propose to conduct geotechnical exploration and environmental soil sampling using sonic drilling methods with continuous sampling as part of the American River Contracts 3b and 4a Projects. Approximately 50 borings will be conducted for geotechnical and environmental data collection. Excavated soil cores will be collected and removed from the site for testing. Upon completion of drilling, each boring will be grouted with cement-bentonite slurry. The proposed action will also include additional environmental investigations which will consist of approximately 100 hand borings and 20 trenches that are each approximately 1 meter deep, 5 meters long, and 1 meter wide to gather archaeological information.
Contact Information
Name
Susanna Real of the Department of Water Resources
Agency Name
Central Valley Flood Protection Board
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Location
Cities
Sacramento
Counties
Sacramento
Regions
Northern California
Other Location Info
The proposed geotechnical and environmental work will occur at four locations along the American River Parkway in the City and County of Sacramento. American River Contract 3b contains one site located on the right bank upstream of the Howe Avenue Bridge and two sites located on the right and left banks upstream from the Watt Avenue Bridge. American River Contract 4a contains one site located on the right bank near the Highway 160 bridge.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
§§15304 Minor Alterations, 15306 Information Collection
Reasons for Exemption
The project consists of minor alterations to land and subsurface data collection through geotechnical and environmental investigations that will not result in a significant disturbance to the environment. The proposed action falls under Categorical Exemption Class 4 Minor Alterations and Class 6 Information Collection (14 CCR§15304, 14 CCR§15306). The subsurface investigations would include minor alterations to land through boring and trenches to collect soil samples. Sampling locations will be backfilled upon completion and sites will be restored to pre-project conditions. The samples will be used to gather information that will be used to support American River Contracts 3b and 4a Projects’ engineering design. Please note, the signed NOE is not attached. If you would like to request a signed copy of the NOE, please contact Board Staff at: questions@cvflood.ca.gov.
Attachments
Notice of Exemption
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