Integrated Design-Build

West Valley has been performing engineering of utilities infrastructure for over 20 years and is a leader in the Integrated Design-Build and Engineer-Procure-Construct-Manage project delivery methods. Our team includes members with many specialties and decades of experience. We have completed over 500 design-build and design-assist projects with values ranging from $10,000 to $12 million. Our engineering group partners with clients to ensure the success of every job from preliminary design to construction. We manage all aspects of the design phase including coordination with various utilities, local and state jurisdictions, railroad companies, property owners and permitting agencies.

• Water & Wastewater
• Gas & Electric
• Registered Applicant Designer for PG&E
• Communications
• Roads & Civil Work


Engineer Teamwork Meeting

Our Engineering Services Include

Water Pipeline Systems

  • Water distribution pipelines, including valves, hydrants, fittings, and appurtenances
  • Replacement of water services and water meters
  • Trenchless pipeline construction design
  • Water distribution pump stations
  • Large transmission water pipelines

Water Treatment

  • Primary and secondary disinfection
  • Water treatment and storage facilities – new, retrofit, and upgrade
  • Tank overflow dichlorination (environmental compliance)

Natural Gas

  • PG&E service application and filing
  • Gas distribution pipelines
  • Gas meter room 
  • Gas pipeline replacement programs (GPRP)
  • Composite and Form B


  • PG&E service application and filing electric distribution systems
  • Rule 20 A, B, and C temporary power
  • Transformer room walk-in vault


  • Site layout
  • Roadway
  • Grading and drainage
  • Water/wastewater
  • Storm water management
  • Lighting
  • Parking
  • Joint trench
  • Utilities