Oken Property Vegetation Maintenance
Summary
SCH Number
2025080093
Public Agency
Sonoma County Agricultural Preservation and Open Space District
Document Title
Oken Property Vegetation Maintenance
Document Type
NOE - Notice of Exemption
Received
Posted
8/4/2025
Document Description
The purpose of the proposed project is to clear vegetation that may be obstructing appropriate storm flow passage within Coleman Creek, and to support habitat restoration efforts within the riparian corridor. The work would involve thinning and trimming densely overgrown native willow and non-native Himalayan blackberry along a 100-foot section of the Coleman Creek stream channel while maintaining existing shade canopy (Project Site 1). Additional work involves clearing Himalayan blackberry that threatens to obstruct storm flow passage into a nearby culvert (Project Site 2). Selective thinning techniques would be used in limbing up mature trees, removing down-ward growing branches and dead vegetation debris to create a “tunnel effect” for storm flow passage. Himalayan blackberry canes would be cut at just above ground level and removed from the stream channel. Best management practices would be employed to ensure that there are no impacts resulting in soil disturbance or tree mortality.
Contact Information
Name
Monica Delmartini
Agency Name
Sonoma County Agricultural Preservation and Open Space District
Job Title
Stewardship Specialist
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Rohnert Park
Counties
Sonoma
Regions
Citywide, Countywide, Northern California, San Francisco Bay Area, Unincorporated
Cross Streets
Synder Lane, Holly Avenue
Zip
94928
Total Acres
76
Parcel #
045-171-026, 045-171-037
Other Location Info
Address: 5100 Petaluma Hill Rd, Rohnert Park 94928
Other Information
Directions: Petaluma Hill Rd. entrance: head south on Petaluma Hill Rd; gated entrance on right. Holly Ave. entrance: head south on Petaluma Hill Rd; right on Snyder Ln; left on Holly Ave. & park at end of Holly Ave, walk through pedestrian gate.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15304 (Minor Alternations to Land)
Reasons for Exemption
The project is exempt pursuant to Section 15304 of Title 14 of the California Code of Regulations because the project consists of minor alterations to vegetation growing within Coleman Creek which will result in improvement of storm flow passage. The project will not result in the removal of healthy, mature, scenic trees. The project will not result in an expansion of existing use beyond that existing at the time of the lead agency’s determination.
County Clerk
Sonoma
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.