Project Description


Sunol Valley Treatment Plant Expansion and Treated Water Reservoir (WD-2582)


City & County of San Francisco

Construction Budget



850K sf

  • Quality Assurance Inspection
  • Office Engineering
  • Cost Estimating
  • Document Control
  • Cost Control


This  project involved the construction of a 40 MGD sedimentation and flocculation basin, modification to flow distribution structure, upgrade of filters, new filtered water, and backwash piping, 3 million gallon chlorine contact tank (CCT), 17.5 MG Treated Water Reservoir (TWR), new chemical feed system with tanks, pumps and piping for TWR, new standby generator and fuel tanks, upgrade of electrical system and instrumentation & control system, replacement of butterfly valves, new 78”pipeline and tunnel, miscellaneous piping, site excavation and grading.