10 Sylvan Ln Creek Bank Erosion Protection Project (Notification of Lake or Streambed Alteration, No. EPIMS-MAN-59504-R3
Summary
SCH Number
2025080904
Public Agency
California Department of Fish and Wildlife, Bay Delta Region 3
(CDFW)
Document Title
10 Sylvan Ln Creek Bank Erosion Protection Project (Notification of Lake or Streambed Alteration, No. EPIMS-MAN-59504-R3
Document Type
NOE - Notice of Exemption
Received
Posted
8/21/2025
Document Description
The Project is limited to bank erosion protection involving biotechnical repairs. The Project will stabilize 155 feet of bank along Corte Madera Creek behind a single-family residence. The Project will dewater the work site. A mid-sized excavator will be used from the top of bank to create a temporary access ramp to a gravel bar at the toe of the bank, in the channel. The excavator will work along the length of the in-channel work area to excavate a keyway to install the buried rock, place two-ton and one-ton boulder RSP, and place boulder-anchored logs and log rootwads. Once the bank erosion protection has been installed, the Project will plant live willow (Salix sp.) cuttings within the RSP on the bank, creating a biotechnical bank erosion protection structure.
The Project will remove seven riparian trees, including five California bay (Umbellularia californica) trees, one bigleaf maple (Acer macrophyllum) tree, and one non-native ficus (Ficus sp.) tree.
The Project will result in a total of 2,283 square feet (140 linear feet) of temporary impacts associated with staging, access, and construction. The Project will result in 1,184 square feet (134 linear feet) of permanent impacts associated with planted RSP.
The Project will result in a total of 959 square feet (134 linear feet) of habitat enhancement comprised of riparian plantings, buried live willow tree plantings, and placement of large woody debris.
Contact Information
Name
Jordan Beaton
Agency Name
CA Department of Fish and Wildlife
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Name
David Baylor
Agency Name
Person or Public Agency Carrying Out Project
Job Title
Person or Public Agency Carrying Out Project
Contact Types
Parties Undertaking Project
Address
Phone
Location
Cities
Ross
Counties
Marin
Regions
San Francisco Bay Area
Other Location Info
Corte Madera Creek, in the County of Marin, State of California at 10 Sylvan Lane, Ross, CA 94957; Latitude 37.96431°, Longitude -122.55794°.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 3; California Code of Regulations, title 14, section 15303
Reasons for Exemption
The Project consists of construction and location of limited numbers of new, small facilities or structures; installation of small new equipment and facilities in small structures; or the conversion of existing small structures from one use to another where only minor modifications are made in the exterior of the structure. The numbers of structures described in this section are the maximum allowable on any legal parcel.
County Clerk
Marin
Attachments
Notice of Exemption
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