alan kropp, geotechnical engineer, foundation engineer, soil engineer, bay area engineer, san francisco engineer, geotechnical consultant, foundation consultant, forensic consultant, consultant engineer, forensic analysis, geotechnical forensic analysis, expert witness, geotechnical investigation, foundation investigation, soil investigation, forensic investigation, construction observation, testing services, soil testing, landslide investigation, landslide remediation, debris flow investigation, debris flow remediation, liquefaction, seismic response, seismic remediation, footing design, drilled pier design, retaining wall design, foundation design

geotechnical engineering consulting firm located in berkeley, california