Hilltop Operations Center (HOC) Retaining Wall
Summary
SCH Number
2024110886
Public Agency
California Department of Parks and Recreation
Document Title
Hilltop Operations Center (HOC) Retaining Wall
Document Type
NOE - Notice of Exemption
Received
Posted
11/25/2024
Document Description
Conduct geotechnical testing in and around the 11-foot retaining wall supporting a cul-de sac at the Hilltop Operations Center (HOC) just south of the Hearst Castle building. A large vertical crack has formed in the wall near the high-point and the wall is assumed to be bulging. Three borings will be taken along the back of the wall, in the existing pavement and will go to a depth of approximately 15-feet. The borings will be drilled by a truck-mounted rig. The borings will be backfilled with cement slurry. To facilitate access for the drill rig, the live oak trees overhanging the wall, into the cul-de-sac, will need to be trimmed. Excavation will also be performed along the base of the wall with a mini excavator, to expose the existing wall foundation and determine its geometry and depth. It is anticipated these will be shallow excavations and occur at two locations along the base of the wall. The consultant will also core the wall in 4 locations to determine the thickness of the wall and rebar size. Ground penetrating radar will be used to determine the rebar spacing. Cores will be taken approximately 12 inches and 60 inches above the base of the wall.
Contact Information
Name
Brad Michalk
Agency Name
California Department of Parks and Recreation
Job Title
Statewide CEQA Coordinator
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Location
Coordinates
Counties
San Luis Obispo
Regions
Southern California, Unincorporated
Cross Streets
Hearst Castle Road at State Highway 1
Zip
93452
State Highways
1
Other Location Info
Hearst Castle State Historic Monument
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15306
Reasons for Exemption
The project consists of basic data collection and resource evaluation activities which do not result in a serious or major disturbance to an environmental resource, included as “Soils and Structural engineering tests” in the Parks and Recreation’s list of exempt activities, in accordance with CCR § 15300.4.
Attachments
Notice of Exemption
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