Sadek Derrega

Biography

 Mr. Derrega has over 25 years of experience in managing and performing engineering geologic and geotechnical engineering investigations in Northern California. His expertise includes river levee reconnaissance and evaluation, dam safety inspections, creek bank stability and retreat, slope monitoring and landslide evaluation and mitigation, detailed earthquake fault zone evaluation studies, geologic and geomorphic mapping and exploration, site feasibility studies for various types of developments, erosion potential evaluation, slope stability analysis, slope instrumentation, geologic and seismic hazards assessments for public schools and essential facilities, engineering geology construction and construction management, Plan of Control preparation, hillside grading, and project management.

Research Interest

 Geotechnical Engineering