Ralph Stone and Company, Inc.
Los Angeles Geotechnical / Environmental Engineers and Geologists

Ralph Stone and Company's In-House Personnel

Each member of our staff has been selected on the basis of proven capability in that person's field of expertise and on the basis of a prior record of academic excellence.  Our interdisciplinary staff enables us to develop a wide range of possible approaches to your needs.  Where specialized knowledge outside the scope of in-house staff expertise is required, we employ the services of consultants who are renowned in their fields.

Our company management participates in projects directly and monitors them closely to ensure technical and economic compatibility with your needs and budget.


  • Sunshine Stone
  • Richard (Rick) Kahle
  • James (Jim) Rowlands
Soils / Geotechnical / Geology


  • James (Jim) Rowlands, R.C.E., R.G.E.
    45 Years Geotechnical and Civil Engineering Experience
  • An (Andy) Nguyen, P.G., C.E.G.
    15 Years Engineering Geology Experience

  • Frank Aghaeepour, E.I.T.
    Deputy Grading Inspector
    8 Years Geotechnical Experience
  • Ryan Spencer
    Deputy Grading Inspector
    5 Years Geotechnical Experience

  • Richard (Rick) Kahle, P.E.,  R.E.A. I,  C.A.C
    45 Years Environmental and Civil Engineering Experience
  • David Klein, R.E.A. I,  Deputy Methane Inspector,  Certified Lead-Based Paint Inspector
    22 Years Environmental Experience
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