Phillips 66 Santa Maria Refinery Demolition and Remediation Project

2 Documents in Project


SCH Number
Lead Agency
San Luis Obispo County
Document Title
Phillips 66 Santa Maria Refinery Demolition and Remediation Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Document Description
Phillips 66 proposes to demolish the Santa Maria Refinery (SMR) and remediate the site. The Project is located at 2555 Willow Road (State Route 1) in an unincorporated area of San Luis Obispo County, near Arroyo Grande and Nipomo, and approximately five miles west of U.S. Highway 101. The SMR site is located within the coastal zone. The Project site consists of refinery facilities that occupy approximately 245 acres within portions of two adjoining parcels: Assessor’s Parcel Number (APN) 092-401-011, and APN 092-401-005. Phillips 66 also owns contiguous undeveloped properties that are not part of the Project. The SMR was built in 1955. The SMR includes petroleum storage and processing facilities, primarily for high-sulfur heavy crude oil. The crude oil was delivered primarily from offshore platforms along the California coast and oil fields in and near the Santa Maria Valley. The majority of crude oil was delivered to the SMR by pipeline. The remainder, which was approximately 2,000 barrels per day of petroleum-based products, was delivered by truck. Semi-refined liquid products from the SMR were transported by pipeline as feedstocks to the Rodeo Refinery in Contra Costa County, California, for upgrading into finished petroleum products. Other SMR products included petroleum coke (a byproduct of oil refining), which was shipped to off-site market destinations by rail and truck, and granular sulfur (recovered from the crude oil), which was shipped to off-site market destinations by truck. Phillips 66 recently obtained approval to transform the Rodeo Refinery, located in the community of Rodeo, in Contra Costa County, into a repurposed facility that will process renewable feedstocks into renewable diesel fuel, renewable components for blending with other transportation fuels, and renewable fuel gas. Because the Rodeo Renewed Project will discontinue the processing of crude oil at the Rodeo Refinery, the SMR is no longer necessary to provide feedstock to the Rodeo Refinery. Consequently, Phillips 66 ceased operations of the SMR in January 2023.

Contact Information

Greg Chittick
Agency Name
MRS Environmental, Inc.
Job Title
Principal and Senior Engineer
Contact Types
Consulting Firm

Susan Strachan
Agency Name
San Luis Obispo County Department of Planning and Building
Job Title
Decommissioning Project Manager
Contact Types
Lead/Public Agency

Brent Eastep
Agency Name
Phillips 66
Job Title
Permitting Lead
Contact Types
Project Applicant


Arroyo Grande
San Luis Obispo
Citywide, Countywide, Southern California, Statewide
Cross Streets
Willow Road (State Route 1)
Total Acres
Parcel #
092-401-011 and 092-401-005
State Highways
State Route 1
Union Pacific Railroad
Nipomo Elementary, Pacific View Academy, Lopez High School
Pacific Ocean

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 Conservation (DOC), 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 Transportation, District 5 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Fish and Game Commission (CDFGC), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Native American Heritage Commission (NAHC), California State Lands Commission (SLC), California Department of Fish and Wildlife, Central Region 4 (CDFW)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California State Lands Commission (SLC), California Department of Fish and Wildlife, Central Region 4 (CDFW)
Development Types
Industrial (Sq. Ft. 10670000, Acres 245, Employees 45)
Local Actions
Use Permit, Coastal Permit
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Public Services, Recreation, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form

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