Moss Vale Sewer Containment Upgrades - Construction

Overview Wingecarribee Shire Council is seeking tenders from appropriately qualified and experienced contractors for the upgrade of existing sewer pump stations, rising mains and associated works in Moss Vale, NSW. Scope The works include upgrading existing sewer networks and pump stations (MV11 and MV13), pipework and rising mains in Moss Vale, NSW. The extent of the work includes the supply, installation, testing and any necessary commissioning works related to this project. The scope includes: Supply, delivery and inclusion of all necessary labour, supervision, materials (including disposal), surveying, geotechnical, pipe testing and concrete testing (if required), temporary works, and all other items necessary to carry out and complete the construction works, ensuring it is fit for purpose and for intended use Completion of all works in accordance with the recommended mitigation measures and controls identified in the approved Review of Environmental Factors provided in Appendix D MV11 Investigation works including potholing, surveying, service locating and space proofing Upgrade existing pumps including footstools, mechanical installation and commissioning Provide temporary bypass arrangements with detailed methodology for each pump station to facilitate pump station upgrade works, approved by the Principal prior to commencement of work Liaising with stakeholders including local community, sporting field, Endeavour Energy, and others for all approvals required for the work Provide Shop Drawings for all electrical upgrades Allow for temporary power supply for bypass operations, using silent generators where used to avoid disturbance to nearby residents Allow for backup power supply for bypass/pumping arrangements Removal of existing vent shaft and installation of new DN150 induct vent shaft complying with SEW–1407 Replacement of inlet manhole lid with watertight Class B lid Construction of new manhole and pipework between EST, wet well and inlet manhole Supply and install air ventilation pipes in accordance with IFC drawings Install new rising mains including all fittings, testing and commissioning Stockpile, transport and disposal of construction waste including redundant pipes and fittings, with a waste log and dockets provided to the Principal on request Reline three (3) discharge manholes at each rising main connection Adjustment of level sensors including float system to meet operational requirements Integrate level sensors into the existing SCADA system Supply, install and connect an emergency storage tank Supply, install and connect pipework between the new manhole, EST, wet well and inlet manhole Provide and install the required spindle and valve box Bench existing wet wells as required Electrical upgrades including switchboard upgrades/replacement Install valves, order control units, bollards and thrust blocks as per IFC design as required Supply and install a new black mesh security fence and matching gate, including posts, footings, hardware and all associated works, in accordance with Drawing 100005 Design and construct the access road to the emergency storage tank, including earthworks, pavement, drainage, compaction, tie-ins, service relocation and tree protection, in accordance with Drawing 100005, project and WSC specifications Liaising with Council's arborist in relation to tree removal and working within the TPZ of existing trees, including removal required for minimum ASP1 works and for the new access road Reinstate the existing driveway in front of the pump station with concrete pavement in accordance with the Council specification and Standard Drawing SD108, including excavation, preparation, concrete works and all associated reinstatement work Reinstate the pump station with a two-coat seal between the new fence, including removal of the existing coat seal, ground preparation, and use of binder and two-coat seal ASP works for power upgrade, liaising with the Endeavour Energy representative for site inspections and work commencement ASP works for power upgrade, including service locating, surveying and site investigation works ASP works for power upgrade, including mandrel, clean and rope existing conduits ASP works for power upgrade, including excavation and preparation of open points for cable pulling works ASP works for power upgrade, including trenching and under bore electrical alignment ASP works for power upgrade, including supply and installation of twin LV pillar ASP works for power upgrade, including supply and installation of electrical cable ASP works for power upgrade, including testing of cable before and after installation ASP works for power upgrade, including plugging cable conduit with Mastic product at each open point ASP works for power upgrade, including all jointing, pre-commissioning and commissioning works ASP works for power upgrade, including removal of the existing service pole as new power will be underground ASP works for power upgrade, liaising with Endeavour Energy while delivering the above works All works as per IFC drawings MV13 Investigation works including potholing, surveying, service locating and space proofing Upgrade existing pumps including footstools, mechanical installation and commissioning Provide temporary bypass arrangements with detailed methodology for each pump station to facilitate pump station upgrade works, approved by the Principal prior to commencement of work Liaising with stakeholders including the Moss Vale Treatment Plant Contractor, Council operational crew, residents, Endeavour Energy, and others for all approvals required for the work Provide permanent bypass arrangements as per IFC drawings Allow for temporary power supply for bypass operations, using silent generators where used to avoid disturbance to nearby residents Allow for backup power supply for bypass/pumping arrangements Supply and install air filtration units in accordance with IFC drawings Install new rising mains including all fittings, testing and commissioning Underbore for the rising main and associated works, with the Contractor to nominate the proposed HDD launch pit and receive pit to suit their methodology, subject to approval from the Principal Stockpile, transport and disposal of construction waste including redundant pipes and fittings, with a waste log and dockets provided to the Principal on request Connect rising mains to pump stations/bypass system Construct and/or connect to discharge manholes at the discharge location Reline one (1) discharge manhole at the connection Adjustment of level sensors including float system to meet operational requirements Integrate level sensors into the existing SCADA system Supply, install and connect an emergency storage tank Bench existing wet wells as required Install valves, vent shafts, educt vent, bollards and Poisson thrust blocks as per IFC design Construct a new access road to the emergency storage tank Reinstate the pump station with a two-coat seal between the new fence, including removal of the existing coat seal, ground preparation, and use of binder and two-coat seal All works as per IFC drawings Contractor Requirements Appropriately qualified and experienced in undertaking sewer pump station, rising main and associated works Responsible for undertaking independent verification, investigations and due diligence to determine the exact quantities, dimensions and lengths required for the complete delivery of the works, as the service quantities/junctions and pipe lengths stated in the Tender are indicative only Must allow for the full project scope, including all associated and ancillary works necessary to meet the operational, technical and compliance requirements of the project, within the tendered price Contract Terms and Conditions No claims for variations or adjustments to rates will be considered based on incorrect or assumed quantities or lengths Instructions to Tenderers In accordance with section 55 of the Local Government Act 1993, Council invites tenders in accordance with this Invitation and the following accompanying documents: Volume 1 - Specification Volume 1a - Appendices A - O Volume 2 - Response Schedules Volume 3 - Conditions of Contract Any published Addenda A more detailed brief of the extent of services required by Council is set out in Volume 1 - Specification, which is included as part of the Request for Tender documentation. Enquiries Contact: Kristian Draxl Email: procurement@wsc.nsw.gov.au Phone: 1300 680 888