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Contact Person

Cathy Ridley

  • 1500 SW 1st Avenue, Suite 1015, Portland, OR 97201
  • (503) 542-1080
  • Contact Email

Landau Associates is an employee-owned consulting firm that provides geotechnical engineering, environmental site management and engineering, and permitting and compliance services throughout the western United States. We believe in working closely with our clients to develop and apply the approaches, expertise, and strategies that bring greatest value to their projects. We deliver this value by providing high quality services, effective responses to client needs and objectives, and knowledge of the regulatory environment.

Landau Associates provides a broad spectrum of engineering and scientific services in six key areas to help our clients put their projects on the ground:

  • Environmental site management and environmental engineering
  • Geotechnical engineering
  • Permitting and compliance
  • Air quality and noise
  • Water resources
  • Stormwater
Whether we are assisting our clients in cleaning up a contaminated site for future development, providing geotechnical engineering in support of a mixed-use development or major transportation project, or coordinating environmental permitting and assessment support for a port industrial complex, our services are guided by our commitment to provide every client responsive, collaborative, quality professional services.