Herbicide Application and Invasive Species Control at Mindego Ranch

2 Documents in Project


SCH Number
Lead Agency
Midpeninsula Regional Open Space District
Document Title
Herbicide Application and Invasive Species Control at Mindego Ranch
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Z: Resource Management and Timberland Preserves
Document Description
The Midpeninsula Regional Open Space District is planning herbicide application of Milestone and Roundup Pro in conjunction with mechanical hand pulling and digging to control non-native thistles on portions of the 1,047 acre Mindego Ranch region of Russian Ridge Open Space in San Mateo, CA. The primary invasive plants that will be targeted include purple starthistle and smooth distaff thistle. The presence of these invasive plants diplaces native vegetation and, if left untreatedm is expected to spread further across the property and into adjacent areas. Treatment of the invasive plants includes herbicide application and hand removal to be completed by a qualified contracted herbicide applicator, and hand crews. The estimated level of work to control the two species is up to 150 acres of treatment per year for up to 7 years. In development of the project plan, the District consulted with a licensed Pest Control Adviser to assist with selection of herbicides, application methods, and time of year for application.

Contact Information

Cindy Roessler
Agency Name
Midpeninsula Regional Open Space District
Contact Types
Lead/Public Agency


San Mateo
Cross Streets
West of Mindego Ridge Trail and Alpine Road
Total Acres
Parcel #
080-320-060, -340-010
State Highways
Mindego Creek, Mindego and Knuedler Lakes
Other Location Info
City/Nearest Community: La Honda

Notice of Completion

Review Period Start
Review Period End
Local Actions
management plan
Project Issues
Aesthetics, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Recreation, Vegetation, Wetland/Riparian, Wildfire, Other
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency

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.

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