500 Ygnacio Valley Road, Suite 328
Walnut Creek, CA 94596

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Headshot of Shane

Shane has over 26 years of experience in the analysis, design and construction of specialty Geotechnical projects. Experience includes earth retention systems, deep foundations, foundation rehabilitation and enhancement, and ground modification. Experience also includes analysis and design of structural systems including concrete, steel and masonry structures, strengthening existing structures.

He holds a BS in Civil Engineering from Purdue University and is a licensed PE in Illinois.

Headshot of Ray

​​​Ray Franz, P.E., D.GE, M. ASCE is a licensed engineer in Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, Pennsylvania, and Wisconsin. He has over 31 years of experience in the design and construction of specialty geotechnical projects, including the Louisville-Southern Indiana Ohio River Bridges project and Thornton Composite Reservoir. ​

Ray holds a BS in Civil Engineering from Worcester Polytechnic Institute and a MS in Civil Engineering from Purdue University. He is a member of ASCE and the Ground Improvement Committee of the Deep Foundations Institute, he's also a past president of the ASCE Geo-Institute Chicago Chapter. ​Over the course of his career, Ray has published numerous publications and presentations, the most recent being "Guidance for Drafting Specifications for Ground Improvement."


Justin holds a BS in General Engineering from California Polytechnic State University. He has over 8 years of research and field management experience in construction and engineering, with particular emphasis on geotechnical construction and ground improvement.


Mark Farkas leads Keller’s dewatering and water treatment division in Northern California. As an expert problem solver with over 20 years of construction experience in and around the Bay Area, Mark specializes in designing and executing deep well and wellpoint systems. Examples of Mark’s work include:

  • UC Hastings in San Francisco (deep wells, recharge wells, observation wells)
  • SFPUC Building 610 (deep wells in a DSM wall)
  • SFPUC Building 600 (deep wells in a CSM wall)
  • San Mateo Wastewater Facility (deep wells)