Reducing Road-Related Sediment Delivery via LandSmart On-the-Ground (Sutro Preserve)


SCH Number
Public Agency
Napa County Resource Conservation District
Document Title
Reducing Road-Related Sediment Delivery via LandSmart On-the-Ground (Sutro Preserve)
Document Type
NOE - Notice of Exemption
Document Description
The goal of this project is to reduce road-related sediments and stormwater runoff from existing unpaved roads. The goal is consistent with implementing the Napa River sediment Total Maximum Dally Load to meet water quality objectives established by the San Francisco Bay Regional Water Quality Control Board. Reducing road~related sediment and stormwater delivery to local waterways will be achieved by improving existing road surfaces (e.g., improving ditch relief, removing berms; and shaping the road via rolling dips, outsloping, crowning or insloping) to improve surface runoff dispersion. Road treatments may also Include adding, road rock or rock armor as needed to fortify existing road surfaces. The scope· of this project will address 3 miles of existing unpaved road, within the existing road footprint, and will not expand the existing use of the road or the property. In 2018 a Biological and Cultural Resources survey (BA) was conducted by Natural Resource Conservation Services (USDA, NRCS) staff. No special status wildlife or plant species, nor their habitats, were observed during field surveys of the project area. No cultural resources within the project area were found.

Contact Information

Agency Name
Napa County Resource Conservation District
Contact Types
Lead/Public Agency


Parcel #
032-020-049, 051, 053. 032-540-009,101,024
Other Location Info
032-020-051, 032-540-041, 032-550-005

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The project ls categorically exempt from the provisions of CEQA pursuant to CEQA Guidelines Section 15301, Class 1, which consists of the operation, repair, maintenance, or minor alteration of existing public or private facilities or topography features, involving negligible·or no expansion of use beyond that existing at the time of the exemption determination. A key consideration for this class of exemption Is whether the project involves little or no expansion of an existing use.This project includes maintenance of an existing unpaved road and it does not expand or extend the road beyond its current use. Maintenance of the road will reduce fine sediment transport to local waterways that-are tributary to the Napa River, which is listed as impaired for excessive sedimentation.


Notice of Exemption

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