Mad River Slough Shellfish Nursery

2 Documents in Project


SCH Number
Lead Agency
Humboldt Bay Harbor
Document Title
Mad River Slough Shellfish Nursery
Document Type
NEG - Negative Declaration
Present Land Use
Agriculture Exclusive/Natural Resources land use designation and Agricultural Exclusive, Natural Resources/Water zoning
Document Description
The Project objective is to establish a shellfish nursery that will set and mature oyster and clam seed that will then be sold to farmers that will grow the shellfish to market size. The nursery would culture four shellfish species that have existing nurseries in Humboldt Bay: Pacific oysters (Crassostrea gigas), Kumamoto oysters (Crassostrea sikimea), native “Olympia” oyster (Ostrea lurida) and Manila clams (Venerupis philippinarum). The proposed project would utilize a combination of existing and newly constructed mariculture equipment. The newly constructed mariculture equipment includes a new floating upwelling system (“FLUPSY”) and a water intake raft that would be attached to existing anchors in Mad River Slough.The project is expected to be in operation year-round although there will be seasonally fluctuating pumping activity from April to October.

Contact Information

Doug Saucedo
Agency Name
Humboldt Bay Harbor, Recreation and Conservation District (HBHRCD)
Job Title
Natural Resources Coordinator II
Contact Types
Lead/Public Agency

Kimberly and William Rich
Agency Name
Project Sponsor
Job Title
Project Sponsor
Contact Types
Project Applicant

Vanessa Blodgett
Agency Name
Planwest Partners
Job Title
Contract Planner
Contact Types
Consulting Firm


Cross Streets
Lanphere Road
Total Acres
Parcel #
Mad River Slough

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of State Parks, Division of Boating and Waterways, California Department of Transportation, District 1 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, North Coast Region 1 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW)
Development Types
Other (Mariculture (Shellfish Nursery))
Local Actions
Harbor District Permit
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Economics/Jobs, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Wetland/Riparian
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) 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. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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