KJS and Sorrento Vineyard Conversion Erosion Control Plan Application (ECPA) #P17-00432

KJS and Sorrento Vineyard Conversion Erosion Control Plan Application (ECPA) #P17-00432

The project proposes vegetation removal and earthmoving activities on slopes greater than 5 % in connection with the development of 111.5 net acres of vineyard within 156.8 gross acres on a 972.8-acre project site. Proposed activities associated with vineyard development include removing vegetation within the proposed clearing limits, ripping, rock removal, soil cultivation, seeding a cover crop, mulching, trenching for irrigation pipelines, installing a trellis system and deer fence, laying out vine rows, and installing temporary and permanent erosion control measures. The proposed project includes Petitions for Change on Water Right License 9125 (Application 13943) and Permit 18459 (App 26165), which are pending review and processing with the SWRCB, Division of Water Rights. The petitions request an expansion of the place of use to 280 acres (which includes the existing vineyards on the project site as well as the proposed vineyards); the construction of a new 48-acre-ft capacity offstream reservoir; and the construction of a new diversion structure in Elder Creek. Existing Matheson Reservoir would be the point of diversion by collection to storage and a point of rediversion to an existing offstream pond just south of Matheson Reservoir, and the offstream pond would be a point of rediversion from Matheson Reservoir, allowing for the transfer of water between the points of diversion, reservoirs and pond. The project also includes the ongoing maintenance of erosion control measures and operations of approx 4.3 acres of existing vineyards, converted from grassland in 2015 w/o benefit of an ECPA. These vineyard areas are located within two larger vineyard blocks totaling 17.4 acres, all of which occur on lands with a slope of 5% or less and therefore, are not subject to an ECPA pursuant to NCC section 18.108.070(B) except for the aforementioned 4.3 acres occurring on slopes over 5%. Accordingly, the vineyard development area requiring ECPA coverage pursuant to NCC Section 18.108.070(B) will be included in this project.

St. Helena

Napa

Cal Fire, California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Pesticide Regulation, Department of Water Resources, Resources Agency, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Rights, California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)

California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)

Other (Vineyard - 156.8 gross acres)

ECP

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Vegetation, Wetland/Riparian, Wildfire, GHG