Detoxification Facility – San Leandro, CA
Alameda County Medical Center Fairmont Campus
Geotechnical and Fault Hazard Investigations
Geotechnical Services during Construction
AKA conducted a fault hazard assessment for a proposed new detoxification facility at the Alameda County Medical Center complex in San Leandro. Our assessment, which was performed for the Alameda County General Services Administration, initially focused on an available parcel of land between two active traces of the Hayward fault. Exploratory trenching performed by AKA rapidly established this to be an unfavorable site. However, utilizing available data we were able to identify a nearby alternate site that our subsequent trenching showed to be free of significant surface fault rupture hazards. Once we had demonstrated the absence of a significant fault hazard, we rapidly proceeded with supplemental borings and prepared a comprehensive design-level investigation for the project. Follow-on services provided by AKA included a geotechnical review of the project plans and specifications and comprehensive geotechnical services during construction. The detoxification facility is now open on the alternate site that we helped to identify, which proved also to be preferred by the County from a usage perspective.
Alameda County Animal Shelter – San Leandro, CA
Fault Hazard Assessment and Geotechnical Investigation
AKA conducted a fault hazard assessment for a proposed new animal shelter as part of a comprehensive geotechnical and geologic investigation. The project site is located on county-owned property adjacent to the active Hayward fault. Our work, which was performed for the Alameda County General Services Administration, included conducting a detailed surface fault rupture hazard assessment in accordance with the Alquist-Priolo Earthquake Fault Zoning Act. The scope of our hazard assessment included excavating and logging an approximately 300-foot-long exploratory trench crossing the proposed animal shelter site. Our hazard assessment showed the site to be free of significant surface fault rupture hazards, results which we demonstrated to the satisfaction of the County’s peer reviewer in an onsite meeting. Once we had established that there were no significant geologic hazards that would preclude site development, we rapidly proceeded with supplemental borings and prepared a comprehensive design-level investigation for the project.