San Francisco Issues Rules for High-Rise Foundations - Projects sited in areas with the worst soil—in high-risk seismic zones and subject to liquefaction—would require more than one geotechnical engineer on the peer-review team.

In the wake of the settlement related to San Francisco's 645-ft-tall Millennium Tower, which sank at least 16 in. and tilted at least 2 in. to the northwest, the city and county Dept. of Building Inspection issued interim guidelines and procedures for structural, geotechnical and seismic-hazard engineering design review for new buildings 240 ft or taller. All tall buildings, whether designed using the city's prescriptive code or performance-based design, qualify under the new guidance.

The guidelines, issued on Nov. 9, require an additional participant or two on a building's peer-review panel. That person or persons must be a state-registered geotechnical engineer or a civil engineer with "substantially" demonstrated geotechnical experience. 

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https://www.enr.com/articles/43621-san-francisco-issues-rules-for-high-rise-foundations?v=preview