Riddell Preserve Sediment Reduction and Enhancement Project


SCH Number
Public Agency
Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
Document Title
Riddell Preserve Sediment Reduction and Enhancement Project
Document Type
NOE - Notice of Exemption
Document Description
The primary purposed of the project is reduce sediment discharging from an existing deteriorating gravel road and stream crossing and enhance the riparian zone. The proposed project would include replacing existing crossing structure with 10 culverts of increased diameter to accommodate 100-year storm events. The proposed culverts will be set to grade, in-line with natural stream channel orientation and in accordance with the California Department of Fish and Wildlife, California Salmonid Stream Habitat Restoration Manual. At two sites failed culverts will be removed and bridges will be installed to enhance flows and decrease sediment discharge. The project also proposed to replace an existing narrow channel bridge with one that is designed to enhance creek flow, gravel transport and woody debris through the reach.

Contact Information

Gil Falcone
Agency Name
Regional Water Quality Control Board, Region 1 (North Coast), Sa
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The project involves maintenance, restoration, enhancement of fish, plant and wildlife habitat through culvert replacement in accordance with CDFW guidelines for the primary purpose to improve habitat and reduce sedimentation.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

Download CSV New Search Print