John Villarraga

  • John Villarraga

    Laboratory Manager

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    John has over 7 years laboratory testing experience and manages our comprehensive geotechnical, materials, and pavement laboratory, supervising several staff laboratory technicians.

    Our in-house lab is fully certified by Caltrans, City of Los Angeles, AASHTO AMRL, DSA, as well as the County of Orange Materials Lab.

    Specialty tests include: soil chemistry tests, triaxial compression and permeability, soil cement and soil-cement-mixing tests, along with special handling requirements for sensitive and frozen soil samples.


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