Bombala\Delegate "NEW" Water Treatment Plants D&C Project

Summary and scope

Snowy Monaro Regional Council Contract 002/2022. All Proponents will be required to attend the on site pre tender site meeting that will cover both proposed construction sites with initial discussions being held at the Snowy Monaro Council Chambers in Caveat Street(South of Maybe Street) being held at 10a.m. on 1st March 2022. Attached documents include: 1: 1 rft 002-2022 gc21ed2generalconditionsof contract.docx 2: 02agc21edition2tenderschedules-editable.docx 3: 02bgc21edition2tenderschedules-editable.docx 4: 2 rft 002-2022 commercial specifications.pdf 5: 3 bombala and delegate wtp technical specification final.pdf 6: 3137056-bombala and delegate datasheets rev 315.02.22.docx 7: appendix a - smrc - www standard equipment list february 2022.pdf 8: appendix b bombala and delegate wtpsconcept design report.pdf 9: appendix c1bombala ref final v1.0.pdf 10: appendix c2delegate wtp ref final v1.0.pdf 11: appendix d1 bombala wtp gir.pdf 12: appendix d2 delegate wtp gir.pdf 13: appendix e - existing drawings (1).zip 14: appendix f - survey.zip 15: schedule of prices and rates-bombala.xlsx 16: schedule of prices and rates-delegate.xlsx To move into Detailed design, Contractors will use the attached concept designs and completed technical specifications and will coordinate/facilitate through workshops with key stakeholder/s to move to detailed design and then construct of the new Water Treatment Plants at Bombala and Delegate Townships. This will be done in such a way without limiting the obligations of the contractor in any way, the scope of work shall include all work associated with design, drawings, construction, supply, installation, commissioning, testing, proving period of 3 months, operator training and provision of defects liability, operation and maintenance manuals and other technical documentation, to meet the requirements of the contract. The existing WTPs must be operable throughout construction and commissioning, with the ability to switch back to the existing supply facility if there are commissioning problems with the new WTP's. The work shall include, but is not limited to, provision of the following components as described in this specification. Refer to reference concepts for each WTP which will be appended. These items are to be approved by the principal. These items include: Bombala WTP The work shall comprise of a water treatment plant with a net production capacity of 1.5 ML/d to be produced over 22 hours. The scope of work shall comprise of: a) Destratification system building to house the new aeration equipment and new raw water pump switchboard. b) Coolumbooka Dam destratification system; Air compressor, air filters, receiver housed in a separate new destratification system building c) Air release pipe in deep zone in the Dam d) Raw water pumping; duty/standby pumps at the existing dry well and replacement larger building over the dry well and switchboard in a separate room in the destratification building e) Connection of existing raw water pipe to new mixed oxidation/raw water balancing tank. f) Mixed Oxidation/raw water balance tank: located adjacent to WTP g) Pre-oxidation including pH adjustment; dosing of potassium permanganate and pre-soda ash h) Coagulant dosing; i) Coagulation by mechanical mixing in rapid mix tank then slow mechanical mixing in flocculation tanks where polymer is dosed (if required) j) Dissolved air floatation (DAF) and floated sludge removal system k) UF/MF balance tank and duty/standby MF/UF feed pumps and duty/standby self-cleaning strainers l) 2 no trains of UF/MF; with backwash + air scour and CIP systems m) 2 no GAC pressure filters (min) and associated GAC air scour and unchlorinated water backwash system (tank, pumps etc) n) UV disinfection; duty plus standby UV reactors including UVI and UVT sensors o) Primary Chlorination; dosed prior to existing CWT, including mechanical ventilation p) Fluoridation: sodium fluoride based system q) Treated water stabilisation via soda ash r) Use of existing clear water storage and treated water pump station s) Chloramination: trim chlorine plus ammonia dosing to existing TW pump discharge main t) THM stripping system in existing 450 kL treated water tank (Reservoir 1) u) New flow meter to measure overflow from existing sludge lagoons v) Connection of new treated water pipe to existing CWS. w) 1 no. WTP building with office, toilet, laboratory, mechanical room, and all chemical systems. x) 1 No. GAC backwash supply tank and pump station y) 1 no. CIP waste tank and associated concrete pad. z) Connection of DAF sludge and GAC washwater to existing pipe for discharge into existing sludge lagoons. aa) New chemical delivery bund, spill tank and low wall and valves/pipework to spill tank/stormwater. bb) Vegetation removal. cc) All earthworks and pavement works required to allow full plant operation, including footpath around new WTP building and delivery bund. dd) Spray seal access road from the entry from Cathcart Road to the WTP. ee) Connection to existing site stormwater system (cut off drain onsite) ff) Security fencing around WTP gg) Upgrade of existing HV transformer and associated works hh) As a minimum all sample systems, analysers, instruments, and flowmeters shown on Process Flow Diagram. Delegate WTP The work shall comprise of a water treatment plant with a net production capacity of 0.35 ML/d over 22 hours. The scope of work shall comprise of: a) Replacement of duty/standby raw water pumps in existing raw water pump station building and install continuous raw water sampling pump system and analysers b) Pre-oxidation via potassium permanganate or chlorine c) Raw water storage via 283 kL raw water tank (existing) d) Connection of existing 283 kL water reservoir outlet to new WTP inlet e) Bypass around existing 283 kL to new WTP inlet (in the event the existing 283 kL tanks needs to be taken offline) f) Duty/Standby Relift pumps to DAF process g) Oxidation pH adjustment; pre-soda ash dosing h) Coagulant dosing and Coagulation in mechanical mixed rapid mix tank then slow mechanical mixed flocculation tanks where polymer is dosed (if required) i) 1 No train of dissolved air floatation (DAF) j) UF/MF Balance tank k) Filtration via 2No trains of UF/MF, CIP cleaning system and air scour l) UV disinfection: duty+standby reactors including UVI and UVT sensors m) Treated water stabilisation; post soda ash n) Treated water chlorination o) Treated water tank (500 kL usable volume) and pipework to existing treated water pipe p) Combined washwater/sludge entry pond (to slow flow rate down into sludge ponds) q) 2 no. sludge ponds with buffer lagoon and access road r) Overflow dam and earthworks s) Connection of DAF sludge and UF wash water to sludge ponds t) Supernatant/subnatant return pumps from sludge ponds to raw water tank inlet u) Site allowance for future fluoridation; as sodium fluoride saturator based system v) As a minimum all sample systems, analysers, instruments, and flowmeters shown on Process Flow Diagram w) 1 no. WTP building with office, toilet, laboratory, mechanical room and all chemical storage and dosing x) Chemical delivery bund and spill tank (if required) and valves/pipework to stormwater/spill tank y) Retaining wall around WTP building z) New Treated Water Storage tank including pad and earthworks aa) Road base access road on site and supporting earthworks bb) Security fencing and relocation of access gate for WTP cc) Connection of supernatant return to raw water pipe dd) All earthworks and pavement works required to allow full plant operation, including footpath around new WTP building, delivery bund and new TWS tank ee) Relocation of power line and overhead communication line (if existing) ff) Upgrade of existing HV transformer and associated work. Note that the evaluation matrix is as follows Non-Cost Selection Criteria Conformation with requirements in Tender Document - Conformation of all requirements 15 % Capability & Experience - personnel Capability 7.5 % Experience – Relevant 7.5 % Delivery of scope of works Understanding of the engagement 10 % Value for money Quality Assurance 15 % Previous experience - organisation Delivery of similar projects 5 % TOTAL 60 % Respondents must achieve a score greater than the Non-Cost Selection Criteria Threshold of 42% out of 60% to be eligible to be shortlisted and progress any further in the evaluation process.