Diaz Yourman & Associates

About Us

Diaz•Yourman & Associates (DYA) is a privately held geotechnical consulting services corporation, founded in December 1992 on the strong basis of 30 years prior geotechnical engineering experience. Since then, DYA has grown in size, capacity, and breadth of services to become one of the leading geotechnical firms in California. DYA has built its reputation by responsively serving our clients' needs and adding value to their projects with integrity and competence. Our technical hallmarks are applying the latest technologies, innovation, and construction knowledge to develop practical solutions for successful projects.

DYA is certified as a small, disadvantaged and minority-owned business enterprise (SBE, DBE, and/or MBE) through several applicable agencies, including the California Unified Certification Program (CUCP), State of California (DGS), California Public Utilities Commission (CPUC). Metro, County of Los Angeles, City of Los Angeles, City of Long Beach, Port of Long
Beach, Port of Los Angeles, SCRRA, and Metropolitan Water District.