Fee Proposal

Dear Ibrahim

1 Introduction

Alliance Geotechnical Pty Ltd (Alliance) is pleased to submit this proposal to Abergeldie Contractors Pty Limited & Fulton Hogan Utilities Pty Ltd & Programmed Facility Management Pty. Ltd. & Stantec Australia Pty Ltd (ABN 49 476 102 277) trading as West Region Delivery Team (the client) for provision of environmental consulting services (the Services) at Rosemeadow Reservoir Project located at Greco Reserve at Greco Place, Rosemeadow NSW (the site).

2 Project Appreciation

Alliance received a Request for Quotation (RFQ) from Ibrahim Alghothani on 4 September 2025. The RFQ included environmental brief documents ref: P0000045-WRD-DE-GT-SCW-000001 and RFQ HBM Assessment and Management Plans WS0311.

Based on information provided by the client, Alliance has the following project appreciation:

• The site is comprised of Lot 1 in DP601029 and covers approximately 8,045m2;

• The site is not owned by the client;

• The site is currently occupied and being used for a Sydney Water reservoir, with one tank reservoir positioned atop a hill with a driveway and landscaping (grass and trees).

• The project would include development of a new reservoir tank (R311) to be installed north of the existing tank and upgrades to existing tank reservoir (e.g. re-roofing and re-lining construction).

• We understand that the client is seeking environmental services to support the refurbishment and demolition works at the site, including:

  • a preliminary material classification of in-situ materials across a portion of the site, measuring approximately 700m2, to a nominal depth of 2m below ground level, located north of the existing reservoir tank, to be excavated as part of new tank reservoir development. The client requires preliminary advise on:

    • the classification of the fill material to facilitate disposal to landfill;

    • the classification of the fill material to facilitate potential reuse offsite (e.g. ENM); and

    • the classification of the natural material to facilitate potential reuse offsite;

    Alliance understands that these works will be done concurrently with the geotechnicnal scope of works (refer to Estimate No. 12920) and soil samples will be collected from the two geotechnical boreholes. Alliance has assumed two homogeneous fill layers and one natural layer will be encountered at each sampling point;

  • preliminary advise on the site contamination in site soils (by comparing preliminary waste classification data to NEPC 2013 human health and ecological criteria);

    • For the purposes of this preliminary assessment, based on the ongoing and proposed redevelopment at the site, in the context of land contamination, the land use scenario is considered to comprise of:

      • Comm/Industrial ; and

      • Public open space such as parks, playgrounds, playing fields, (e.g. ovals), secondary schools and footpaths (but does not include undeveloped public open space such as urban bushland and reserves, which should be subject to site specific assessment where appropriate);

  • a pre-demolition hazardous building material survey (HBMS); and

  • provision of an asbestos and lead paint building material management plan (MMP, TSOW);

  These works are to be completed concurrently

• A hazardous building material register for the site was provided by the client (ref: WS0311, HazCentral 2020) for the existing tank reservoir at the site; and

• The client does not require the project deliverables to be reviewed by a Certified Environmental Practitioner - Site Contamination Specialist (CEnvP-SC).

2 Objectives

Alliance understands the objective of the material classification assessment is to make a preliminary assessment of:

• the fill material for offsite disposal purposes to landfill;

• whether the fill material would classify as excavated natural material (ENM); and

• whether the natural material would classify as virgin excavated natural material (VENM).

Alliance understands the objective of the preliminary site contamination assessment is to compare the analytical data collected from the waste classification assessment, against human health and ecological criteria presented in NEPC 2013. It is not the objective of this scope to assess or endorse, whether the material will be suitable for a particular land use scenario.

Alliance understand the objectives of the hazardous materials building survey are to:

• Make an assessment of the type, location, quantity and condition of hazardous building materials in the reasonably accessible areas of the existing reservoir tank, located south central portion of the site; and

• Provide recommendations for the management and/or removal of identified hazardous building materials (if identified). to support WRDT in their update of HazCentral 2020, (Alliance has not made allowance to update this document directly).

Alliance undemands the objective of the asbestos and lead paint building MMP for the site, is to include:

• a management objective to facilitate the management of asbestos and lead paint building materials in the identified structures during refurbishment;

• a management strategy for the identified asbestos containing material and lead paint building materials; and

• a preferred asbestos containing material and lead paint clearance strategy to assess whether the management objective has been addressed.

For the purpose of this project, the following hazardous building materials will be considered:

• asbestos containing materials (ACM);

• asbestos containing dusts (ACD);

• lead based paints (LBP);

• lead containing dust (LCD);

• synthetic mineral fibres (SMF);

• polychlorinated biphenyls (PCB); and

• ozone depleting substances (ODS).

3 Scope of Work

3.1 Project Planning, Managment and Client Communication

The project will be planned and managed by a suitably experienced Alliance environmental consultant, with technical support from an Alliance principal consultant. Alliance has not made allowance for participation in client telephone / video / face-to-face meetings or other project related communication with client, beyond basic advice on project program and scheduling of fieldwork. Alliance can participate in meetings or provide additional communication, if required, as an additional scope of work item to the Services, with reference to Section 7.

3.2 Preliminary Waste Classification

Alliance will undertake a desktop review of acid sulfate soil maps held on file, and a selection of recent aerial photographic records for the site.

Alliance will prepare a sampling and analysis quality plan (SAQP) based on the desktop review. The SAQP will be designed with reference to the US EPA’s seven step process, with data quality objectives (DQO) and data quality indicators (DQI). The sampling and analysis scope allowed for in this proposal is preliminary in nature, based on Alliance's preliminary project understanding, and may require amendment should the actual site conditions differ from that preliminary understanding. Alliance would discuss potential amendments with the client, before proceeding.

Alliance has allowed for one mobilisation to site and:

• Observation of the drilling of up to two geotechnical boreholes, to a target depth of 1.5m below ground level (bgl), 0.3m into natural material, or practical refusal;

• Excavation of up to two test pits (adjacent to the two geotechnical boreholes) using hand tools (e.g. shovel), to a target dept of 0.5m below ground level, or practical refusal to collect soil samples for ENM assessment;

• Logging soils encountered during intrusive works;

• Collecting soil samples from relevant sampling points, at the surface and at regular depth intervals, or where evidence of potential contamination is observed.

• Screening of relevant soil samples for volatile organic compounds (VOC) using a calibrated photo-ionisation detector (PID)

Alliance has made allowance for completion of soil sampling works from the geotechnical boreholes within one business (8-hour) working day on site. In the event fieldwork exceeds that time allowance, additional will be charged at the applicable rate in Section 7.

Alliance has allowed for NATA accredited laboratory analysis (5-7 business days turnaround) up to the quantities set out below.

Soils

6 x total recoverable hydrocarbons (TRH)

6 x benzene, toluene, ethyl benzene and xylenes (BTEX)

6 x polycyclic aromatic hydrocarbons (PAH)

4 x organochlorine pesticides (OCP)

4 x polychlorinated biphenyl (PCB)

6 x metals (As, Cd, Cr, Cu, Pb, Hg, Ni, Zn)

2 x pH / electrical conductivity (EC)

2 x foreign materials (rubber, plastic, bitumen, paper, cloth, paint and wood)

6 x asbestos (absence / presence)

2 x toxicity characteristic leaching procedure (TCLP) either one metal or benzo(a)pyrene each (provisional)

Alliance has made provisional allowance for analysis of one intra-laboratory duplicates (for 8 metals), one inter-laboratory triplicates (for 8 metals), one rinsate blanks, and one trip spike/blanks (BTEXN/TRH C6-C10), for field and laboratory quality assurance / control assessment purposes.

Should observations made during proposed fieldwork or laboratory analysis, indicate potential for contamination not addressed by the proposed sampling point quantities, methods, analytical suite or quantities, Alliance may recommend amending the scope or work to facilitate material classification. Alliance would seek client approval prior to undertaking additional works.

The data collected during the desktop review, fieldwork and laboratory analysis will be assessed and a preliminary waste classification assessment report prepared with reference to the relevant sections of NSW EPA 2014, 'Waste Classification Guidelines'. The report will be issued as 'final' in secure electronic (PDF) format via email. Addressing comments on the report can be undertaken as an additional scope item, with reference to the Schedule of Rates below.

3.3 Preliminary Site Contamination Assessment Letter

Alliance will utilise the analytical data collected as part of the preliminary waste classification (Section 3.2) and compare the results to NEPC 2013 and Friebel, E & Nadebaum, P (2011) 'direct contact' human health criteria and 'generic' ecological health criteria.

A letter will be prepared, summarising this comparison to NEPC 2013 and Friebel, E & Nadebaum P (2011) adopted criteria. The letter will be issued as 'final' in secure electronic (PDF) format via email. Addressing comments on the report can be undertaken as an additional scope item, with reference to the Schedule of Rates below.

3.4 Hazardous Building Material Survey.

Alliance proposed to undertake the following scope of works to address the hazardous building materials survey objectives.

3.4.1 Fieldwork

Alliance has allowed for one mobilisation to site and undertaking a survey of hazardous building materials in relevant internal and external areas of the nominated reservoir tank and structures, that in the opinion of Alliance are safely accessible. Alliance has not made allowance for accessing the internal portion of the reservoir.

The survey will be undertaken with reference to the relevant sections of:

• ANZECC 1997, 'Identification of PCB Containing Capacitors'

• AS 4874-2000, 'Guide to the investigation of potentially contaminated soil and deposited dust as a source of lead available to humans'

• AS/NZS 4361.1:2017, 'Guide to hazardous paint management, Part 1: Lead and other hazardous metallic pigments in industrial applications'

• AS/NZS 4361.2:2017, 'Guide to hazardous paint management, Part 2: Lead paint in residential, public and commercial buildings'

• HB 40.1-2001, The Australian Refrigeration and Air-conditioning Code of Good Practice

• SafeWork NSW 2022, 'Code of Practice: How to manage and control asbestos in the workplace' dated December 2022

The survey will include:

• a minor destructive survey for collection of up to:

  • 5 x ACM or ACD including SMF samples;

  • 5 x LBP or LCD samples;

• a visual assessment of:

  • electrical appliances (including representative light fittings) for the presence of capacitors potentially containing PCB;

  • refrigerators, air conditioners and fire extinguishers for the presence of ODS; and

  • thermal and acoustic insulation for the presence of SMF.

Alliance will arrange for reasonable 'make safe' on destructive sampling points, using industry accepted practice. Evidence of destructive sampling after 'make safe' works should be expected.

Alliance has made allowance for completion of the survey fieldwork in conjunction within the Preliminary Waste Classification working day on site.

Should observations made during proposed fieldwork indicate a potential for hazardous building materials to not be addressed by the proposed Services, Alliance may recommend amending the proposed Services to facilitate addressing the project objectives.

No allowance has been made to:

• return sampled materials to their original condition;

• access areas or surfaces that:

  • are considered unsafe to enter, when in the reasonable opinion of Alliance, are considered to be structurally unsound;

  • meet the definition of a 'confined space';

  • are subfloor voids or crawl spaces;

  • require destruction of equipment or demolition works;

  • contain services including electricity, gas, water, chemical lines, or pressurised services;

  • require use of an elevated work platform (EWP);

  • are greater than 2.5m in height above ground level; and

  • are below-ground building structures, including footings and foundations.

Assumptions regarding the presence or absence of hazardous building materials in these areas or on these surfaces, will be made at the time of the survey, using industry accepted practice and professional judgement.

3.4.2 Laboratory Analysis

Alliance has allowed for NATA accredited laboratory analysis (5-7 day turnaround) up to the quantities set out below.

• 5 x ACM or ACD including SMF samples (building material ID); and

• 5 x LBP or LCD samples.

 Expedited laboratory analysis turnaround is subject to the following surcharges:

• 100% for 1 day turnaround;

• 50% for 2 day turnaround; and

• 25% for 3 day turnaround.

The turnaround time starts at 5pm on the business day date that the samples are receipted by the analytical laboratory.

Should observations made during proposed laboratory analysis indicate potential for hazardous building materials to not be addressed by the proposed Services, Alliance may recommend amending the proposed Services to facilitate addressing the project objectives.

3.4.3 Data Assessment and Reporting

The data collected during the fieldwork and laboratory analysis will be assessed and a hazardous building materials survey report (inclusive of a hazardous building materials register) prepared, with reference to the relevant sections of:

• ANZECC 2003, 'Polychlorinated Biphenyls Management Plan' Revised Edition April 2003

• AS/NZS 4361.2:2017, 'Guide to hazardous paint management, Part 2: Lead paint in residential, public and commercial buildings'

• ETU / ECAA / NECA 1993, 'Code of Practice for the Safe Handling of Equipment Containing Polychlorinated Biphenyl'

• HB 40.1-2001, The Australian Refrigeration and Air-conditioning Code of Good Practice

• NOHSC 1993, 'Code of Practice for the Safe Use of Synthetic Mineral Fibres

• SafeWork NSW 2022a, 'Code of Practice: How to manage and control asbestos in the workplace' dated December 2022

• https://www.safework.nsw.gov.au/resource-library/manufacturing/safe-management-of-synthetic-mineral-fibres-smf-glasswool-and-rockwool

The report will include:

• information on the type, location, quantity and condition of hazardous building materials in the areas surveyed; and

• recommendations for management of hazardous building materials (if identified).

The report will be issued as 'final' in secure electronic (PDF) format via email. Addressing comments on the report can be undertaken as an additional scope item to the Services, with reference to the Schedule of Rates below.

3.5 Asbestos and Lead Paint Building Materials Managment Plan (TSOW)

Alliance will undertake:

• a desktop review of HazCentral 2020,

• a desktop review of Alliance (2025); and

• data assessment and reporting.

If there is information identified during the desktop review that will not be addressed by the scope of work set out in this proposal, Alliance may recommend varying the Services, to address the project objective. Alliance would seek client approval prior to varying the Services.

The data collected during the desktop review will be assessed and a lead paint MMP prepared with reference to the relevant sections of:

• AS/NZS 4361.2:2017

• Clause 396 to 404 in of the Work Health and Safety Regulation 2017 (NSW)

The report will be issued as 'final' in secure electronic (PDF) format via email. Addressing comments on the report can be undertaken as an additional scope item, with reference to the Schedule of Rates below.

4 Client Inputs

Alliance requires the following client inputs upon engagement (and prior to mobilisation to site), at no cost to Alliance, in order to undertake the proposed scope of works:

• Arrange and coordinate unrestricted and uninterrupted drive on access across the site, on a mutually agreeable date and time (where drive-on access across the site cannot be made available, then the shall arrange and coordinate parking for Alliance on or immediately adjacent to the site);

• These scope of works presented herein will need to be completed concurrently as part of Alliance Estimate 12920.

• A copy of the plans of the structure to be subject of to the asbestos and lead paint management, in electronic (PDF) format.

5 Program

The Services will be provided during normal business days (Monday to Friday), between the hours of 7am and 5pm. At the time of preparing this proposal, Alliance estimates the project reporting deliverables can be made available, as follows:

• the preliminary waste classification report can be provided within one to two days from receipt of all laboratory analytical results;

• the preliminary site contamination assessment letter (comparison to NEPC 2013) can be made available within one day following completion of the preliminary waste classification report;

• the hazardous building material survey (HBMS) can be provided within one to two weeks, following receipt of all laboratory analytical results; and

• the asbestos and lead paint building materials management plant (TSOC) can be provided within one to two weeks, following submission of the HBMS report.

6 Fees

Alliance proposes the fees set out in the fee summary table in Section 9 of this proposal, to undertake the Services. Progress invoices will be issued monthly or on project completion, whichever occurs first.

Expedited laboratory analysis turnaround is subject to the following surcharges:

• 100% for 1 day turnaround;

• 50% for 2 day turnaround; and

• 25% for 3 day turnaround.

The turnaround time starts at 5pm on the business day date that the samples are receipted by the analytical laboratory.

7 Schedule of Rates

In the event that Services beyond the proposed scope of works are required, these can be undertaken on a time and materials basis, using the schedule of hourly rates in Engineering and Construction Short Subcontract (ECSS) WRD-CN-CGT-CON-000015 variation 001, executed on 26/07/2023.

8 Offer, Validity and Acceptance

Alliance offers to provide the Services in accordance with the terms of Engineering and Construction Short Subcontract (ECSS) WRDCN-CGT-CON-000015 executed on 29/07/2021 (as extended by Variation 1 executed on 26/07/2023). This offer is valid for a period of 30 days from the date of this proposal. Alliance requires written acceptance of this proposal in order for the Services to commence.

9 Fee Summary Table (ex GST)

Preliminary Waste Classification Assessment

Preliminary Site Contamination Assessment Letter (Comparison of Waste Class Data against NEPM 2013 criteria)

Hazardous Building Material Survey

Asbestos and Lead Paint Building Materials Managment Plan (TSOW)