Your geotechnical engineer will use their professional skills and judgement as a state-licensed engineer to determine how to consider the hazard in the structure and/or site design. Once plans are completed, your geotechnical engineer will need to produce a “plan check letter” stating that the geotechnical recommendations have been properly incorporated into the plans. Recovery Permit Center (RPC) plan check staff will collect that letter and help to ensure that the recommendations of the geotechnical report are reflected in the home design and calculations.
Atkins Study data is just one source of information that will be used by the project geotechnical engineer to determine how the rebuilt home design will address the potential for debris flow. In some cases the geotechnical engineer may request additional information from a geologist to assist with their recommendations; if the property owner has “opted out” of SCCC 16.10, this additional geologic information will not be peer reviewed by County staff.
County staff have met with local geotechnical engineers on both an individual and group basis to discuss how they may utilize the Atkins Study data to satisfy the requirements of the California Building Code, and will continue to assist however possible to facilitate use of this valuable data by industry professionals.
If you plan to rebuild in conformance with 16.10 and not “opt out” by using the CZU rebuilding directive, your geotechnical engineer may provide a more expanded analysis, and will make specific recommendations for mitigation measures that can lower the risk to the rebuilt home.
Technical professionals can download the Atkins Study shapefiles and raster data via the County Geographic Information Services (GIS) open data website: https://www.santacruzcounty.us/Departments/GeographicInformationSystems(GIS).aspx