HSI Engineering is a full service organization that provides design-to-construction services to Public Agencies, Engineers, Contractors, Developers and Owners. We understand the viewpoints of each party, which allows us to see the big picture and provide quick design and construction solutions. 


  • Value Engineering
  • Cost Reduction Incentive Proposals (C.R.I.P)
  • Site Remediation Services
  • Cost Analysis
  • Rehabilitation Strategies
  • Pavement Coring/ Sampling
  • Lab Modeling
  • Soil-Cement/ Soil-Lime Mix Designs
  • Treatability Studies
  • Pavement Engineering
  • Specification Development
  • Quality Control Services
  • Forensic Investigations


  • Soil Testing (Native and Treated)
  • Aggregate Testing
  • Concrete Testing
  • Quality Control for Soil Stabilization
  • Quality Control for HMA Placement
  • Quality Control for Concrete
  • Compaction Testing of Subgrade, Retention Walls, Etc.
  • QC Spec Development
  • Lab and Field Caltrans Certified


  • Geotechnical Drilling/ Sampling
  • Site Evaluations
  • Materials Testing
  • Geotechnical Analysis
  • Earthwork Design/ Recommendations
  • Foundation Analysis & Design
  • Landslide Investigation
  • Site Development Feasibility Study
  • Slope Stability/ Retaining Structure Design
  • Subsurface Investigation/ Sampling/ Testing
  • Geotechnical Construction Phase Services