ABOUT US> OUR CLIENTS> Public Agencies

HSI Engineering provides specialized consulting services to public agencies on sustainable infrastructure strategies. Our material recycling and stabilization advancements provide our public clients with cost and environmental incentives that insure full utilization of their existing assets. All designs are supported by HSI's innovative quality control protocols for design conformation and performance assurance. We've also provided various public agencies with material testing and QC services for concrete, HMA, retention walls and subbase material.


  • City of American Canyon
  • City of Antioch
  • City of Campbell
  • City of Foster City
  • City of Hayward
  • City of Lafayette
  • City of Marysville
  • City of Martinez
  • City of Oakland
  • City of Palo Alto
  • City of Petaluma
  • City of Pittsburg
  • City of Richmond
  • City of Salinas
  • City of San Leandro
  • City of Santa Clara
  • City of Santa Cruz
  • City of Seaside
  • City of Soledad
  • City of Sunnyvale
  • City of Tracy
  • City of Vallejo
  • City of Watsonville
  • Town of San Anselmo


  • Los Angeles County
  • Merced County
  • San Mateo County
  • San Luis Obispo County
  • Santa Cruz County
  • Stanislaus County


  • Department of the Army
  • Department of Water Resources
  • Port of Stockton
  • Ports of America