We are a team of passionate, experienced professionals driven by a commitment to excellence in everything we do.

Our leadership team brings together decades of collective experience across the full spectrum of civil engineering disciplines. From transportation and infrastructure to water resources and environmental engineering, we possess the expertise and vision to tackle the most complex challenges facing our communities.

P 1.855.PLUMP11 (758.6711)
E [email protected]


  • B.S. in Civil Engineering California State University, Northridge 1982
  • American Concrete Institute
  • American Institute of Steel Construction
  • American Society of Civil Engineers
  • International Code Council
  • National Council of Examiners for Engineering and Surveying
  • Steel Framing Alliance
  • Structural Engineers Association of Southern California

Richard is experienced in the field of forensic engineering as an expert witness in cases involving structural issues.

Mr. Plump is the high-energy driving force within PLUMP ENGINEERING,INC. He has built his reputation on his ability to develop close client relationships, to listen to what a client needs and on his professional business manner. His management style includes a hands-on approach to design and engineering calculations. Mr. Plump's experience in team leadership has enabled him to put together a highly skilled group of professionals.

P 1.714.357.7323
E [email protected]


  • B.S. in Civil Engineering California State University, Long Beach
  • Certified Preparer of Storm Water Pollution Prevention Plans
  • Certified Storm Water Compliance Inspector
  • Member of American Society of Civil Engineers
  • Licensed Professional Civil Engineer in California and Arizona.

Mr. Tryfonopoulos has over 15 years experience in the field of Civil Engineering. His expertise includes managing the land development of mixed use, commercial, industrial, and redevelopment projects, ranging in size from single store users to regional malls. He has worked extensively on the development of mass grading plans, drainage studies, hydraulic network analysis, feasibility studies, cost estimates, SWPPP reports, and WQMP / SUSMP reports.

Mr. Tryfonopoulos is responsible for overseeing each project's progress throughout planning, design, and construction, as well as coordinating with clients to keep projects on schedule and within budget. His focus is on maintaining a high level of service, quality and construction feasibility for construction plans to meet the satisfaction of our clients.


1.855.PLUMP11 (758.6711) 1.714.385.1834


914 East Katella Avenue
Anaheim, CA 92805 United States of America