Solano County Routine Maintenance Agreement (Notification of Lake or Streambed Alteration, No. 1600-2021-0026-R3)


SCH Number
Public Agency
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Document Title
Solano County Routine Maintenance Agreement (Notification of Lake or Streambed Alteration, No. 1600-2021-0026-R3)
Document Type
NOE - Notice of Exemption
Document Description
The Project is limited to routine maintenance activities at 93 bridges and 43 culverts which are defined as activities that are periodically scheduled and implemented as necessary to maintain the water transport capacity of stream channels and the structural and functional integrity of existing bridges and culverts on or affecting streams. Maintenance activities considered to be “routine” include: 1. vegetation management including limbing and trimming of tree branches, mowing of stream banks, herbicide use, removal of fallen and dead trees and cattails (Typha sp.), tules (Schoenoplectus sp.) or other vegetation from the channel, and limited removal of live trees; 2. sediment and debris removal from around and within structures; 3. erosion control, including planting native vegetation; 4. maintenance and repair of existing rip-rap associated with bridges or culverts if needed to prevent scour and erosion under or around structures; and 5. repairing and stabilizing areas near infrastructure including minor grading and replacing rock rip-rap.

Contact Information

Alex Single
Agency Name
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency


Northern California, San Francisco Bay Area
Other Location Info
The project is located at several streams within Solano County including Putah Creek, Pleasants Creek, Miller Canyon Creek, Ulatis Creek, Alamo Creek, Encinosa Creek, Laguna Creek, Suisun Creek Sweeney Creek, McCune Creek, Ledgwood Creek, Horse Creek, Gordon Creek, Pennsylvania Creek, Green Valley Creek, Gibson Canyon Creek, English Creek, Lucol Hollow, The Big Ditch, Putah South Canal, Montezuma Slough, Denverton Slough, Haas Slough, Shag Slough, Wells Slough, Barker Slough, and Hill Slough.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The project involves repair and maintenance of existing structures, facilities, and topographical features, involving negligible or no expansion of existing use.
County Clerk


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