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Completed Projects

Completed June of 2024

Nunes Water Treatment Plant Improvement Project

Project Cost: $10,450,000
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The District has completed upgrades to its Nunes Water Treatment Plant in Half Moon Bay, California. There were numerous improvements made during the 3 years, which included the following main items of work: a new plate settler sedimentation basin, a new caustic soda storage tank, site improvements, filter improvements, clearwell improvements, and electrical/instrumentation improvements. These upgrades provide operational redundancy and efficiency at the treatment plant, so that it has backups in case of equipment failure, allowing for quick restoration of normal operations without significant disruptions to water service.

“We invested a lot of money, but we got an enormous bang for the buck.”

Director Glenn Reynolds

Completed July of 2024

Magellan/Highway 1 and Alameda Avenue Pipeline Restoration Projects

Project Cost: $500,000
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Magellan/Highway 1 Portion of the Project

Approximately 475 linear feet of existing 10-inch cast iron pipe was lined with Primus Line, a flexible fabric pipeline liner. This process was performed using the Primus slip lining technique, which avoided causing any disruptions on Highway 1 and the Coastal Trail, and saving the District $2M+ in pipeline replacement costs using traditional methods.

Alameda Avenue Portion of the Project

Around 175 linear feet of the existing 10-inch welded steel pipeline were lined with Primus Line, a flexible fabric pipeline liner.

  • Advantage Reline video showing Magellan/Hwy 1 Pipeline Restoration Project using Primus Line to line existing cast iron pipeline.

    Completed June of 2024

    Valve Replacement Project

    Project Cost: $300,000
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    This project involved replacing 15 water main valves in disrepair, removal of a 6″ water main that crossed behind several backyards along 2nd Avenue (between Granelli Avenue and Myrtle Street), and installation and connection of approximately 50 linear feet of new 6″ ductile iron pipe water mains.


    Completed February of 2024

    Poplar Street Water Main Replacement Project

    Project Cost: $416,000
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    Prior to the commencement of the City of Half Moon Bay’s Poplar Street Traffic Calming and Safety Project, CCWD replaced 850 feet of existing cast iron main with new ductile iron pipe, domestic services and operating valves adjusted to the new street profile.

    In Process/Future Projects

    • Scheduled to Start Fall 2024:

      Carter Hill Tank Project

      UPCOMING! The Carter Hill Prestressed Concrete Tank and Seismic Upgrades Project will break ground in Fall of 2024!

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        The Carter Hill tank site, located adjacent to the Nunes Water Treatment Plant, currently has three water storage tanks at the site: HMB 1: built 1950, .4 million gallons; HMB 2: built 1955, .6 million gallons; and HMB 3: built 1963, 1.5 million gallons.

        The Carter Hill Prestressed Concrete Tank and Seismic Upgrades Project involves the demolition and removal of tanks HMB 1 and HMB 2 and existing yard piping, and constructing a new 2.1 million gallon AWWA D110 Type 1 Prestressed Concrete DN Tank and new yard piping and related infrastructure. The Project is scheduled to commence in Fall of 2024, with scheduled completion in Spring of 2026.

        PROJECT DETAILS (PDF)
      PROJECT ESTIMATED COST: $10,000,000
    • Scheduled to Start Spring 2025:

      Nunes Sedimentation Basin Rehabilitation

      PROJECT ESTIMATED COST: $400,000
    • Scheduled to Start Summer 2025:

      Highway 92 Pipeline Replacement Project Phase 1

      PROJECT ESTIMATED COST: $3,000,000
    • Scheduled to Start Summer 2025:

      Pilarcitos Canyon Road Repairs

      PROJECT ESTIMATED COST: $400,000
    • Scheduled to Start Spring 2026:

      Scheduled Pipeline Replacements

      PROJECT ESTIMATED COST: $1,000,000+

    Major Projects Completed in the Last 5 Years

    • June 2023

      Grandview Water Main Replacement Project

      PROJECT COST: $1,900,000
    • February 2023
      Pipe Under Creek-Pilarcitos-Strawflower
      PROJECT COST: $700,000
    • January 2023
      Crystal Springs Pump Replacement Project
      PROJECT COST: $300,000
    • June 2022
      Nunes Fuel Tank Upgrade Project
      PROJECT COST: $200,000
    • June 2021
      Denniston Water Treatment Plant and Booster Pumpstation Emergency Power/Generator Project
      PROJECT COST: $600,000
    • August 2020
      Denniston Water Treatment Plant/Denniston Tank Road Repairs
      PROJECT COST: $500,000
    • June 2020
      Ferdinand Avenue Pipeline Replacement Project
      PROJECT COST: $650,000
    • May 2020
      Pilarcitos Canyon Pipeline Replacement Project
      PROJECT COST: $1,400,000
    • February 2020
      Casa Del Mar & Grand Avenue PRV and Pipeline Replacement Project
      PROJECT COST: $650,000