BACKGROUND
3 The background is mostly uncontentious and the following summary of the salient features of that background is taken from the affidavits of Richard Kirkman (VWA's managing director and chief executive officer) sworn 18 March 2022 and 15 June 2022; and Mr David Randall (a projects manager employed by the Customer in relation to the Springvale and Angus Place mines at relevant times) sworn 18 May 2022.
4 The Customer owns the mines. Operations at the mines (active mining at the Springvale mine and care and maintenance at the Angus Place mine) produce excess water (for example, in the process of cooling mining equipment and in the suppression of dust) and it is necessary to remove water from the mines to allow such operations to continue. The process of removing excess water is referred to as dewatering. Before the water extracted from the mines is returned to the environment, it is treated to remove certain elements.
5 Prior to the commencement of the operation of the treatment facility built by VWA in 2019, the process by which the water was extracted from the mines and treated was as follows:
(1) as part of the dewatering activities at the mines, a series of pumps moved subterranean water to bore holes on the surface. More particularly, the Springvale mine was dewatered via the pumping of water at bore holes known as bores 6 and 8 and at Fan Shaft 3 (also known as bore 3); and the Angus Place mine was dewatered via the pumping of water via a borehole known as bore 940;
(2) the water from bore 940 on some occasions was subject to treatment with ferric chloride to reduce levels of arsenic;
(3) samples were taken at sampling points at each of bores 3, 6, 8 and 940 at various times;
(4) water from each of bores 3, 6 and 8 was combined at a boost station with the consequence that the water which left the first boost station was a mixture of water from bores 3, 6 and 8;
(5) that combination of water was combined with water from bore 940 at a second boost station, with the consequence that the water which left the second boost station was a mixture of water from bores 3, 6, 8 and 940;
(6) the water that was a combination of water from bores 3, 6, 8 and 940 (combined water) was sent through a pipeline to a settling pond;
(7) during its journey along that pipeline, the combined water was sampled;
(8) near the end of its journey along that pipeline, the combined water was treated, including treatment with flocculants and coagulants;
(9) the treated combined water was kept in the settling pond; and
(10) the treated combined water was then discharged into the environment at a licensed discharge point known as LDP009, adjacent to the Wallerawang Power Station Ash Dam.
6 On or about 6 May 2016, GHD Pty Ltd, on behalf of the Customer, released a Call For Expressions of Interest for the design and construction of a water treatment facility, to treat water from the mines. The Call For Expressions of Interest included as part of its "Preliminary Risk Allocation" an "Inflow Risk" described as:
The Promoter will be required to treat all inflow volumes received at the inlet point for the entire Concession Period with financial compensation and/or relief from performance obligations being available to the Promoter in limited circumstances expressly provided for in the BOOT Contract.
7 The Promoter in that context was the party taking on the obligation to design and construct the water treatment facility, which ultimately was VWA. The Concession Period was envisaged to be 15 years.
8 Mr Kirkman's evidence is that in order to design a water treatment facility it is (and at relevant times was) necessary to understand parameters of the water that is to be treated; and that such design (including the treatment processes and facility size) is driven by the type, magnitude range and statistical distributions of those parameters.
9 On 28 July 2016, Mr Tom Roche, Project Manager for VWA made a request for information (RFI-P-003) to GHD in the following form:
Veolia would like to better understand the nature and duration of the elevated raw water TSS events, please provide the following if possible:
Can GHD please provide:
• Historical SCADA data detailing
o Bore pump status (running/off)
o Individual groundwater flows
o Combined groundwater flows
o Individual groundwater turbidity
o Combined groundwater turbidity
Data at 5 minute intervals for the period 2013 - 2016.
Copies of operational logs detailing raw water quality conditions and operational observations.
Drawing showing location of raw water sampling points and water quality instrumentation.
10 On the same day, Mr Roche sent a further request for information (RFI-P-004) to GHD in the following form:
Veolia would like to better understand the magnitude and characterisation of the raw water organics, this is a critical design parameter for the water treatment process:
Can GHD please provide:
• Raw water grab sample results (please include details describing sampling approach and location)
o Dissolved Organic Carbon
o Total Organic Carbon
o UV254 absorbance or UV transmissivity (please specify whether this is filtered)
o Any additional raw water NOM fractionation results
o Colour
• Online data (where available)
o UV254
• Data at 5 minute intervals for the period 2013-2016.
• Jar testing campaigns
o Methodology and Results
11 On or about 30 July 2016, the Customer provided a request for proposals (RFP) to potential tenderers, including VWA. The RFP included the following under "Project Scope":
The Customer wishes to select a specialist water services company (Project Co) that will finance, design, construct, test and commission, operate and maintain water transfer and treatment systems and brine management systems. This arrangement will be documented under a water treatment services contract to be entered into between the Customer and the successful Proponent in the form contained in Volumes 3 and 4 of this RFP (Water Treatment Services Contract or WTSA).
…
The successful Proponent will agree to perform the Works and Services under the WTSA including:
• the financing, design, construction, testing and commissioning of a water transfer system to transfer Mine Water from the Springvale and Angus Place Mines to MPPS (Water Transfer System);
• the financing, design, construction, testing and commissioning of a water treatment system adjacent to MPPS to enable the beneficial reuse of Treated Water by MPPS for cooling purposes, and release of surplus Treated Water to the environment (Water Treatment System);
• the financing, design, construction, testing and commissioning of a new brine crystallisation system at MPPS to enable the efficient disposal of brine extracted from the Mine Water and the existing power station cooling water system to the salt slurry ponds adjacent to the MPPS (Brine Crystalliser);
• installation of augmentation works to the existing brine concentrators at MPPS;
• the operation and maintenance of the Water Transfer System, the Water Treatment System and the Brine Crystalliser; and
• the provision of water transfer and treatment services.
12 The RFP also included an overview of the proposed contractual structure, including relevantly as part of the proposed Water Treatment Services Contract:
2.1 Mine Water Quality Envelope
(a) The Customer does not warrant the quality of Mine Water.
(b) Subject to section 2.1(c), the Water Treatment Facility must accept and treat Mine Water of any quality, including Out-of-Envelope Mine Water.
(c) If the Mine Water is Materially Out-of-Envelope Mine Water, Project Co may direct the Customer to reduce the delivery of Mine Water to the Reduced Flow Condition in accordance with clause 20 of the General Conditions of Contract.
(d) The Mine Water Quality Envelope is described in Table 1.
13 "Mine Water" was defined in the proposed Water Treatment Services Contract as meaning:
… the mine water discharged from either the Springvale Mine or the Angus Place Mine (or both) and delivered (or, where the context requires, to be delivered) to a Mine Water Receipt Point.
14 The Mine Water Quality Envelope, as described in Table 1, was a list of various parameters, together with minimum and maximum measurements for each parameter.
15 The RFP also included blank tables for Out of Envelope Mine Water (OOE) parameters and Materially Out of Envelope Mine Water parameters (MOOE), in respect of which the tenderers were to nominate the values of the parameters that would define what was OOE and MOOE.
16 The RFP did not contain any raw data that captured the parameters within the mine water that was being treated at that time. As noted above, VWA made two requests for such information on 28 July 2016. On 3 August 2018, Mr Roche of VWA sent a further request (RFI-P-007) to GHD, under cover of an email:
Please see RFI attached.
This is critical information without which we cannot progress the WTP design. We had thought that the necessary information would be in the RFP docs so would appreciate your assistance to try to get it from CECO/EA as soon as possible.
Our process engineering team is happy to have a telecon to discuss whenever it suits.
17 The attached RFI was in the following form:
Following detailed review of the 29th July 2016 issue of "Attachment 1 to Water Treatment Services Contract: Scope of Works and Services" document (RFP Vol 4, Annexure 3), Veolia notes that key 'mine water' quality information has not been provided. This information is essential to enable Veolia (and other proponents) to progress the design in a reasonable manner and to ensure the design of the WTP adequately meets the performance requirements of the Project. Without this information, Veolia is unable to commence the 14 week tender period.
The key raw water quality data (or envelope) is necessary to progress the design of the WTP. Can GHD provide 95%ile and 50%ile for the following species as a matter of urgency:
1. Total alkalinity
2. Carbonate
3. Bicarbonate
4. Total hardness
5. Sodium
6. Calcium
7. Magnesium
8. Potassium
9. Sulphate
10. Chloride
11. Nitrate
12. Boron
Furthermore, the following species have treated water quality limits identified in the treated water performance standards (Table 4 of RFP Vol.4, Annexure 3). To enable the design of the WTP to be completed effectively it is necessary for the 'mine water' concentrations of these species to be understood. Without this information typical reductions that may be achieved by the WTP processes can be conveyed but whether the magnitude of this reduction is sufficient to meet the limiting values stated in Table 4 will ultimately be dependent on the incoming mine water concentration:
• Cadmium
• Copper
• Cobalt
• Nickel
• Lead
• Mercury
• Chromium
• Selenium
18 On 4 August 2018, Mr Chris Godfrey, the Chief Financial Officer of VWA, wrote to GHD in the following terms:
Veolia thanks GHD for the Request for Proposal (RFP) documents received over the weekend. The good news is our team is well advanced with Engineering, Procurement, Construction and Operations planning and we look forward to supporting GHD and its customers throughout the RFP process.
Having reviewed this set of documents and recognising the overall tight timeframe we are all working towards, Veolia wanted to provide some high level feedback on the documents provided so in order to support an efficient bid process.
…
Technical
Veolia notes that the RFP information regarding Water Quality Inputs is limited and will not allow Veolia to progress the process design adequately. Without further levels of additional information, Veolia would need to take conservative design assumptions which would not be beneficial to either party.
Accordingly, can GHD please provide the following information as a matter of urgency:
RFI# Subject Submitted Criticality
001 Existing Brine Concentrators at MPPS 22-JUL-2016 3
002 RO Capacity at MPPS/Wallerawang 22-JUL-2016 2
003 TSS Events 28-JUL-2016 2
004 Feed Organics 28-JUL-2016 2
005 Cooling Tower Details 28-JUL-2016 3
006 Equipment Numbering 28-JUL-2016 3
007 Water Quality Data - Necessary for WTP design 03-AUG-2016 1