Matthes Vineyard Conversion Agricultural Erosion Control Plan #P21-00047-ECPA
Summary
SCH Number
2025080483
Lead Agency
Napa County
Document Title
Matthes Vineyard Conversion Agricultural Erosion Control Plan #P21-00047-ECPA
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Undeveloped; Agricultural Watershed Zoning; Agriculture, Watershed and Open Space General Plan Land Use designation.
Document Description
Agricultural Erosion Control Plan for the proposed clearing of vegetation, earthmoving, land contouring, and installation and maintenance of erosion control measures associated with the development of approximately 13.2 gross acres of vineyard with approximately 11.1 net planted acres in three proposed vineyard blocks, located on an approximately 40.0-acre property. Average slopes within the development area range from 18% to 28% with an average slope of 23%, with a total of approximately 1.0-acre of non-contiguous land occurring on slopes over 30%. The proposed project would convert to vineyard the following pre-2020 Glass Fire vegetation communities: approximately 8.79 acres of mixed chaparral, 2.17 acres of coast live oak woodland, 1.94 acres of non-native annual grassland and 0.26-acre of Douglas fir forest. Based on existing (i.e., post-fire) conditions, the project proposes the removal of 17 existing oak trees and one (1) Ponderosa pine tree greater than 6-inch diameter at breast height (DBH) within an approximate 0.49-acre area. The project proposes a 7.3-acre Preservation Area, which includes 2.24 acres of the surviving intact coast live oak woodland.
Contact Information
Name
Pamela Arifian
Agency Name
Napa County
Job Title
Planner III
Contact Types
Lead/Public Agency
Phone
Name
William and Leigh Matthes
Agency Name
Property Owner
Job Title
Property Owner
Contact Types
Project Applicant
Phone
Email
Location
Coordinates
Cities
St. Helena, Unincorporated area
Counties
Napa
Regions
Countywide, Unincorporated
Cross Streets
Howell Mountain Road and Meadowood Lane
Zip
94574
Total Acres
40.0
Parcel #
025-070-043-000
State Highways
29
Railways
Napa Valley Wine Train
Airports
N/A
Schools
St. Helena Montessori, St. Helena Primary, St. Helena High etc.
Waterways
Napa River, Canon Creek, Conn Creek Spring Valley Creek, Sulphur Creek, York Creek
Township
08N
Range
05W
Section
30
Base
MDM
Other Location Info
No situs address. Accessed from existing private access road through neighboring parcel (APN 025-420-003-000) on Brittany Lane via Big Rock Road in City of St. Helena.
Other Information
Additional schools within 2 miles: St. Helena Elementary, Robert Louis Stevenson Intermediate, Napa Valley Community College
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Fish and Game Commission (CDFGC), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Coastal Conservancy (SCC), California State Lands Commission (SLC), Delta Stewardship Council, Office of Historic Preservation, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Drinking Water, District 3, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (Agricultural / Vineyard)
Local Actions
Agricultural Erosion Control Plan
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Public Review Period Start
Public Review Period End
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
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