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Project Updates and Announcements

March 19, 2020: Prequalification RFQ for Construction Services

The RFQ for Construction Services for the GHWTP Concrete Tanks Replacement Project is available to download on eBidBoard. Qualified contractors are encouraged to submit Statements of Qualifications (SOQs). All interested contractors must submit their completed SOQ on or before April 15, 2020 at 4pm. Any queries should be directed to the point of contact listed in the RFQ.

Project Background

The Graham Hill Water Treatment Plant's four post-tensioned concrete tanks are nearly 60 years old. The filtered water, reclaim, and sludge storage tanks are visually deteriorating as the tanks approach the end of their service life. This project will replace these tanks and their related equipment, piping, and other appurtenances. A new electrical building and several retaining walls will also be constructed, and the existing access roadway to the site will be widened as well. 

CT image_03-sludge tank

Project Objectives

  • Construct three new structurally acceptable concrete tanks
  • Increase operational flexibility and redundancy with improvements to pump stations and piping layouts

Project Components

  • Replace the 1.0 MG filtered water storage tank
  • Replace the 0.7 MG wash water reclamation tank
  • Replace the 0.7 MG sludge storage tank
  • Replace and relocate the reclaim pump station and wash water supply pump station
  • Install new decant port effluent pump station and sludge pump station vault
  • Construct new electrical building
  • Widen existing roadway

Full size plan view here.

 Project Schedule

March – April 2020

RFQ for Pre-qualification

May 2020

Notify Pre-qualified Contractors

June – August 2020

Request for Bid

August 2020

Award of Contract

December 2020 – June 2023

Construction

 

Construction Impacts: Work to be performed in an active water treatment plant.

Project Documents

You can find the Initial Study and Proposed Mitigated Negative Declaration for the project on the Environmental Documents page.

Project Contact

Greg Bradshaw, Greg.Bradshaw@hdrinc.com, (925) 212-0058

212 Locust Street, Santa Cruz, CA 95060