Diaz•Yourman & Associates
Practical Geotechnical Solutions   Successful Projects

Our Services

Design

  • Site and route evaluations
  • Geologic hazards
  • Seismic design
  • Site characterization
  • Subsurface drainage
  • Grading
  • Ground improvement
  • Slope stability
  • Foundations
  • Dynamic analyses
  • Pavements
  • Instrumentation

Construction

  • Material sources
  • Construction observation and testing
  • Verification of anticipated conditions
  • Evaluation of changed conditions
  • Foundation installation
  • Instrumentation
  • Claims evaluation

Environmental

  • EIR/EIS
  • Site characterization
  • Remediation
  • Solid and liquid waste disposal
  • Landfill
  • Aerially Deposited Lead (ADL) Studies
  • Phase I Initial Site Assessments (ISA)
  • Phase II Hazardous Waste Studies
  • Sustainability

Legal

  • Forensic investigation
  • Litigation support

Recent News

  • December 2021 & February 2022

    South Waterfront Pier J Bike & Pedestrian Path receives APWA BEST Project Award & ACEC Engineering Excellence Award

    Read more...  
  • February 4, 2020

    Diaz•Yourman & Associates(DYA) is proud to announce the promotion of two new principals, S. Niranjanan and Clint Isa.

    Read more...
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