Rios Farming Company Usibelli Water Storage Reservoir
Summary
SCH Number
2026010308
Public Agency
Napa County
Document Title
Rios Farming Company Usibelli Water Storage Reservoir
Document Type
NOE - Notice of Exemption
Received
Posted
1/13/2026
Document Description
Grading and earthmoving activities associated with the construction of a 75 acre-foot capacity water storage reservoir on gently sloping land (typically 0% to 5%) within a 6.1 acre area within a 520 acre parcel.
Contact Information
Name
Kelli
Agency Name
Napa County
Job Title
Planner III
Contact Types
Lead/Public Agency
Phone
Name
Matthew Bueno
Agency Name
PPI Engineering
Job Title
Registered Professional Engineer
Contact Types
Project Applicant
Phone
Location
Coordinates
Cities
St. Helena, unincorporated
Counties
Napa
Regions
Northern California, San Francisco Bay Area, Unincorporated
Cross Streets
Hardin Road and Pope Canyon Road
Zip
94574
Total Acres
520
Parcel #
018-160-026
State Highways
n/a
Railways
n/a
Airports
n/a
Schools
n/a
Waterways
Burton, Maxwell, Pope, and Hardin Creeks
Township
09N
Range
05W
Section
26
Base
MNDM
Other Location Info
1900 Maxwell Canyon Road, St. Helena, CA 94574
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15303 and 15304
Reasons for Exemption
Project is the grading, earthmoving activities associated with the construction of a 75-acre-foot capacity water storage reservoir on shallow slopes (slopes ranging typically from 0-5%) located within an area of approximately 6.1 acres. The proposed reservoir would meet minimum setbacks from the property boundaries, and ephemeral stream located northeast and south. Pursuant to State Section number 15304, the project is located on less than 10% slopes and not located within any waterway or geologic hazard area. The project area is not situated on a recognized hazardous waste site or in a biologically sensitive area and would not exacerbate any known landslide. The proposed reservoir would be filled with existing vineyard subsurface drainage system. This project will not adversely affect cultural, biological, or scenic resources, and the project is conditioned to require environmental commitments. The proposed project would not substantially interfere with the movement of wildlife. In addition, it will not contribute to increases in local off-site stream flows or sediment levels, reductions in groundwater recharge, groundwater levels, or available wildlife habitat, or changes in other environmental parameters. Finally, there are no unusual circumstances associated with this project that would cause it to have a significant effect on the environment: see project file at the Napa County Department of Planning, Building, and Environmental Services for documentation supporting these conclusions.
County Clerk
Napa
Attachments
Notice of Exemption
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