Dynamo Solar Commercial Floating Solar Use Permit (P22-00340-UP), Zone Change (P23-00181-ZC), and Variance (P23- 00268-VAR)

Summary

SCH Number
2024040604
Lead Agency
Napa County
Document Title
Dynamo Solar Commercial Floating Solar Use Permit (P22-00340-UP), Zone Change (P23-00181-ZC), and Variance (P23- 00268-VAR)
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Agricultural Watershed Zoning Designation/Public Institutional General Plan Designation
Document Description
Approval of a Use Permit, Zone Change, Variance, Lot Line Adjustment, and Grading Permit to allow: a request to construct approximately 56-acres of floating solar panels on Napa Sanitation District’s existing wastewater ponds. The proposed commercial solar facility will produce approximately 34.7 megawatts (MW) of direct current electricity, converted to 24.5 megawatts (MW) of alternating current electricity. The proposed project includes approximately 2-miles of electrical transmission lines, with portions constructed above and below ground. The electrical transmission route will consist of 51 transmission line towers ranging in height from 38.5 feet to 74.5 feet tall. The proposed project will require the creation of one 0.13-acre electrical substation located on the northern portion of the Napa Sanitation District’s existing wastewater ponds and the 0.9-acre expansion of an existing Pacific Gas and Electric (PG&E) “Tulucay” electrical substation located on Anderson Road. The expansion of the PG&E electrical substation will require approximately 24,700 cubic yards of earthwork. • The construction of the 56-acre commercial solar facility, 42 of the proposed electrical transmission towers, 0.13-acre new electrical substation, and the approximately 24,700 cubic yards of earthwork associated with the 0.9-acre expansion of an existing Pacific Gas and Electric (PG&E) “Tulucay” electrical substation located on Anderson Road are within the permitting jurisdiction of Napa County. The project includes a request to change the Zoning District of the developed portions of the project parcels from Agricultural Watershed: Airport Compatibility (AW:AC) to Public Lands: Airport Compatibility (PL:AC) to support the establishment of a Commercial Solar Facility. The project includes request for a height Variance to construct above ground portions of the transmission lines taller than the Zoning District’s maximum height of 35 feet. The Variance requests relief of the height standards to establish 42 transmission line towers, within the jurisdiction of Napa County, at a height varying between 38.5 feet and 74.5 feet tall. A Lot Line Adjustment is proposed between Assessor Parcel Numbers 046-400-004-000 and 046-400-057-000, to accommodate the PG&E electrical substation expansion. • The installation of 8 electrical transmission towers and the undergrounding of approximately 1,800 feet of electrical transmission lines are within the permitting jurisdiction of the California Department of Transportation (CalTrans). • The electrical equipment associated with the 0.9-acre expansion of an existing Pacific Gas and Electric (PG&E) “Tulucay” electrical substation located on Anderson Road and one Point of Connection Outside (POCO) transmission tower are within the permitting jurisdiction of the California Public Utilities Commission (CPUC).

Contact Information

Name
Matt Ringel
Agency Name
Napa County
Job Title
Planner II
Contact Types
Lead/Public Agency

Name
Eva Pauly-Bowles
Agency Name
Dynamo Solar LLC
Job Title
Director
Contact Types
Project Applicant

Location

Cities
Napa
Counties
Napa
Regions
Unincorporated
Cross Streets
Soscol Ferry Road and Vista Point Drive
Zip
94558
Total Acres
57
Parcel #
057-050-003-000, 057-010-010-000, 057-050-006-000, 057-010-038-000, 057-010-039-000, 046-400-016
State Highways
HWY 29 and 221
Railways
Union Pacific Railroad
Airports
Napa County Airport
Schools
McGrath School
Waterways
Napa River, Soscol Creek, Steamboat Slough, Sheehy Creek, Carneros Creek, Soscol Creek, etc.
Township
04N
Range
04W
Section
3
Base
MDM

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Energy Commission, 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 Lands Commission (SLC), Department of Toxic Substances Control, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Transportation, District 4 (DOT)
Development Types
Power:Solar (Megawatts 24.5), Power:Electric Transmission Lines (Megawatts 24.5)
Local Actions
Rezone, Use Permit, Grading permit, Lot Line Adjustment, and Variance
Project Issues
Aesthetics, Agriculture and Forestry Resources, Biological Resources, Cultural Resources
Local Review Period Start
Local Review Period End

Attachments

State Comment Letters [Comments from State Reviewing Agency(ies)]

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