Tenders Are Invited For Otaki Inlet Works And Aeration System Upgrade

Request For Tenders (Rft) For Otaki Inlet Works And Aeration System Upgrade. Open Date: Friday, 23 June 2023 2:30 Pm (Pacific/Auckland Utc+12:00) Close Date: Tuesday, 25 July 2023 2:30 Pm (Pacific/Auckland Utc+12:00) Tender Type: Request For Tenders (Rft) Tender Coverage: All Of Government Regions: Wellington Required Pre-Qualifications: None Overview: The taki Wwtp Provides Screening, Primary Treatment In An Aerated Lagoon, Clarification, And Secondary Treatment Via Two Oxidation Ponds. Designs Have Been Completed; And This Construction Project Is Planned To Be Fast-Tracked As Part Of CouncilS Programme To Increase Capacity And Upgrade Inlet Works And Aeration Systems For Wastewater Facilities In The Region. The Total Value Of The Works Is In The Region Of $750K-850K. We Seek An Experienced Professional Contracting Company To Work Collaboratively With The Council To Undertake The New Inlet Works Upgrades And Installation Of The New Aeration System For The Aerated Lagoon At The taki Wwtp. The Work Will Be Undertaken In Two Separable Portions: 1. Separable Portion 1: Construct And Integrate The New Inlet Works Into The Wwtp. The New Inlet Works Will Enable The Wwtp To Process A Higher Influent Flow Rate As Per The Projected Population Growth. This Will Include: A. The New Contra-Shear® Milliscreen Inlet Screen (Free Issued By Council). B. A New Structure For The New Screen Has Been Designed And Is To Be Constructed As Part Of The Inlet Works Portion. 2. Separable Portion 2: Supply, Install, And Integrate The New Aeration System Into The Aerated Lagoon At The Wwtp. This Will Include: A. Concrete Lining The Base Of The Aerated Lagoon, Which Is Currently Unlined. B. The Aeration System Upgrade, Which Involves The Replacement Of The Existing Three Aerators That Have Reached Their Service Life, With Three Dry Mounted Venturi Jet Aerators. C. Installation Of Two Control Valves Upon The Sludge Recirculation And Wasting System, Which Will Be Used To Increase The Solids Retention In The Aerated Lagoon To Improve Plant Performance. 3. Removal Of All Decommissioned Equipment And Waste Material From Site. A Further Provision Item Of Works May Include Dredging, Removal Of Gravel, Levelling, And Concreting Within The Lagoon Base And Walls, And Installation Of A New Floor Type Hydrostatic Relief Valve To Prevent The Floatation Of The Lagoon When It Is Drained. These Works Are Described In More Detail In Section 2 Of This Rft. The Project Is Most Suited To A Supplier Who Can Provide Local Construction Resource; Has Experience In Inlet Construction And Installation As Well As Aeration System Installation; And Has Sufficient Resource Available To Meet The Project Deadline Of 30 April 2024 (At Latest). Tender Link : Https://Www.Gets.Govt.Nz/Kcdc/Externaltenderdetails.Htm?Id=27605450