ABOUT US> OUR CLIENTS> Engineers

As an expert in chemical engineering of soils utilizing quicklime, cement and fly ash, HSI provides sub-consultant services to the engineering community. Our specialty services provide a unique perspective to the design team. We offer huge potential values to the client through our innovative approach to cost and constructability benefits. We've also provided geotechnical and soil lab testing services to a number of geotechnical engineering firms. 

  • Arcadis
  • Azari Engineering
  • Bechtel
  • Berlogar Stevens & Associates
  • Cal Engineering & Geology
  • Central Valley Testing
  • Cornerstone Earth Group
  • CSG Consultants
  • Earth Systems Pacific
  • Engeo
  • ERS Corporation
  • Fugro Consultants
  • Geocon Consultants
  • GeoStructural Engineering & Construction
  • GMU Geotechnical
  • Harris & Associates
  • KC Engineers
  • Kimley-Horn
  • Kleinfelder
  • Laco Associates
  • Mark Thomas
  • Miller Pacific
  • Moore Twining Associates
  • Ninyo & Moore
  • PARIKH Consultants
  • Pavement Data Group
  • Quantum Geotechnical
  • SMG
  • Sousa Engineering
  • T. Makdissy Consulting
  • URS Corp.