Victorian Desalination Project

Transcription

1 Victorian Desalination Project Environmental ntal Noise Design Report for Wonthaggi Site for DP -2: Project Wide Noise Control September 21 Reissued for Approval Document Number RP PBB NC X 1 F 2 PBBeca Template QA 39 Report TM-PBB-QA--X--39-C-2 Version Date /7/21

2 Victorian Desalination Project Environmental Noise Design Report for Wonthaggi Site for DP -2: Project Wide Noise Control Table of Contents 1 Introduction... 3 Appendix A MDA Report RP Victorian Desalination Plant - Aquasure Wonthaggi Plant Environmental Acoustics Design Report Stage 2 Reissued for Approval Printed on 22 September 21 3:33 p.m. Document No. RP-PBB-NC--X--1-F-2 2 of 3

3 Victorian Desalination Project Environmental Noise Design Report for Wonthaggi Site for DP -2: Project Wide Noise Control 1 Introduction Marshall Day Acoustics Pty Ltd (MDA) has been commissioned by PB Beca Pty Ltd to provide acoustic and vibration design advice for the design of the Victorian Desalination Project (VDP). Appendix A is an MDA prepared report prepared for inclusion in the DP -2 Project Wide Noise Control Stage 2 Design Package. This report summarises the background noise survey, design, assessment and procurement processes that have been adopted for the Victorian Desalination Project (VDP) site near Wonthaggi. This report addresses predicted operational environmental noise emissions from the Wonthaggi site, including power and transfer pumping facilities. This revision contains edited content in response to the Stage 2 submission review comments. Reissued for Approval Printed on 22 September 21 3:33 p.m. Document No. RP-PBB-NC--X--1-F-2 3 of 3

4 Victorian Desalination Project Environmental Noise Design Report for Wonthaggi Site for DP -2: Project Wide Noise Control Appendix A MDA Report RP Victorian Desalination Plant - Aquasure Wonthaggi Plant Environmental Acoustics Design Report Stage 2 Reissued for Approval Document No. RP-PBB-NC--X--1-F-2 Printed on 22 September 21 3:33 p.m.

5 TABLE OF CONTENTS EXECUTIVE SUMMARY Page No. i 1 INTRODUCTION PROJECT BACKGROUND WORKS APPROVAL AND PS&PR REQUIREMENTS EPA Works Approval WAA and PS&PR requirements SEPP N-1 and N3/ NOISE MANAGEMENT PLAN Identification of sources of noise Control of tonal and low frequency noise Site acoustic model Prediction methodologies Attenuation methods Design reviews Review of vendor submissions Allowance for 2 GL/year Commissioning... 5 LOCATION OF NOISE SENSITIVE AREAS... 6 BACKGROUND NOISE MEASUREMENTS Environmental Effects Statement (EES) surveys Further surveys... 7 ENVIRONMENTAL NOISE LIMITS ENVIRONMENTAL NOISE ASSESSMENT Predicted noise levels Compliance Assessment CONCLUSION... 34

6 APPENDIX A APPENDIX B APPENDIX C APPENDIX D APPENDIX E APPENDIX F APPENDIX G APPENDIX H TERMINOLOGY & ABBREVIATIONS SITE PLANS EQUIPMENT LIST & SOUND EMISSION DATA BUILDING TREATMENTS & SOUND INSULATION DATA ACOUSTIC SHIELDING OF DUNES OPERATIONAL TRAFFIC CIRCULATION PLAN FOR THE PLANT INTERNAL ROAD NETWORK SAMPLE CALCULATIONS SUPPLEMENTARY MODEL INFORMATION AND DRAWINGS DOCUMENT STATUS Revision Purpose Date delivered - Stage 2B revised document for external issue September 21 Disclaimer Reports produced by Marshall Day Acoustics Pty Ltd are prepared based on the Client s objective and are based on a specific scope, conditions and limitations, as agreed between Marshall Day Acoustics and the Client. Information and/or report(s) prepared by Marshall Day Acoustics may not be suitable for uses other than the original intended objective. No parties other than the Client should use any information and/or report(s) without first conferring with Marshall Day Acoustics. Copyright The concepts and information contained in this document are the property of Marshall Day Acoustics Pty Ltd. Use or copying of this document in whole or in part without the written permission of Marshall Day Acoustics constitutes an infringement of copyright. Information shall not be assigned to a third party without prior consent.

7 1 INTRODUCTION The purpose of this report is to demonstrate predicted compliance with the operational phase environmental noise requirements of the design of the Victorian Desalination Project (VDP) site near Wonthaggi. In doing this, the report also summarises the background noise survey, design, assessment and procurement processes that have been adopted. This report addresses predicted operational environmental noise emissions from the Wonthaggi site, including power and transfer pumping facilities. A glossary of terms and abbreviations is provided in Appendix A. Site plans of the proposed plant works are provided in Appendix B. 2 PROJECT BACKGROUND On 3 March 29, the Environment Protection Authority (EPA) issued Works Approval (WA) No (EPA 29a) to the Department of Sustainability and Environment (DSE), allowing the occupier to construct works at the Victorian Desalination Plant (VDP), subject to a number of conditions. The WA was transferred to AquaSure, the company selected by the Victorian Government to deliver the VDP, on 27 August 29. The Works Approval relates to the main plant site that is on leased land near Wonthaggi. This report documents the measures that are being taken to design the VDP in accordance with the requirements of Condition 2.8 of the Works Approval. Noise controls during the construction phase are documented in the construction phase Environmental Management Plan and are not covered by this document. AquaSure uses a staged design process for each design package. There are two stages: Stage 1 Preliminary design: finalised concepts for the relevant design element Stage 2 Detailed design documentation, including typical features and proposed schedules of fixtures, samples and material finishes Issued for approval documentation (Stage 2A) Approved for Construction documentation - 1 per cent design completion with approvals (Stage 2B). At the time of submitting this report, most VDP design packages have been issued as Stage 1 and an increasing number have been issued Stage 2. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 1

8 AquaSure has appointed the Thiess Degrémont Joint Venture (TD) as the D & C contractor. TD has commissioned the Parsons Brinkerhoff Beca (PBB) joint venture as its design consultants. Marshall Day Acoustics (MDA) is a specialist acoustic consultant which has been engaged as part of the PBB, and their design team to model plant noise and to recommend noise control measures and materials. MDA is working under the direction of specialist acoustic engineers from PBB. Their work is reviewed by an independent acoustic specialist commissioned by PBB, and a second independent acoustic specialist commissioned by the DSE. 3 WORKS APPROVAL AND PS&PR REQUIREMENTS The environmental noise requirements relevant to the operation of the VDP project are set out in: Environmental Protection Agency Works Approval No. 6444, and Schedule A of Appendix S3 Environmental Requirements of the Project Scope and Performance Requirements (PS&PR) issued by the Department of Sustainability and Environment (DSE). These requirements are reproduced in chapter of the Works Approval Application. The design and performance criteria provided by these documents are reproduced in this section. 3.1 EPA Works Approval The acoustic requirements are documented in Clause 2.8 of Works Approval No and are reproduced in Table 1 overleaf. The table also provides references to the relevant sections of this report for related information to each condition. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 2

9 Table 1 EPA Works Approval and MDA report references WA Condition 2.8 Before Construction of the works commences, the occupier must submit to EPA a copy of the final plans and specifications, together with explanatory information verifying to the satisfaction of the EPA that the final design: a) meets the relevant noise design targets specified in the application; and b) minimises any intrusive impacts, including from low frequency noise. Works Approval No Clause 2.8 Considerations Do final plans and specifications include equipment and plant-item descriptions, diagrams of plant locations and dimensions including relevant construction materials and data on adopted or contracted performance specifications of equipment or processes? Do final plans & specifications include relevant operations matters relevant to noise (e.g. whether access doors are open routinely during operation that could affect building transmission loss assumptions) and are the plans and specifications consistent with the relevant performance requirements? Does explanatory information include relevant calculations, modelling or inferences based on the plans and specifications? Does the noise propagation modelling show the noise design targets are achieved under worst case atmospheric conditions? Does the supporting modelling include details of all assumptions, modelling adjustments, and all internal modelling calculations? Are intrusive impacts (condition 2.8 b) such as short term peak noise from vehicle movements minimised by buffering, shielding or operational controls? Are tonal noise impacts addressed as specified in the performance requirement 22.3? Are potential impacts of low frequency noise (condition 2.8 b) assessed and demonstrated to be at a level that avoids intrusive impacts? MDA Report Reference Section 8 and Appendix B, C and D for acoustic compliance. Refer to the Compliance Report for clause 2.1 for other aspects. Section 8.2 Appendices C and D contain model inputs. Section 4 includes modelling philosophy. Section 8 contains a discussion of results. Appendix G contains sample calculations. Refer sections 4.4 and 8. Section 4. Appendix G contains sample calculations. Section 8.2 Sections 8.1 and 8.2 P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 3

10 3.2 WAA and PS&PR requirements The technical acoustic requirements for the Victorian desalination plant are included in Appendix S3 of the PS&PR. These requirements are reproduced in Chapter of the Works Approval Application. Table 2 on the following page documents the requirements relevant to the scope of this report. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 4

11 Table 2 PS&PR environmental noise requirements relevant to the operation of the Wonthaggi site PS&PR Reference Subject Objective Performance criteria Performance requirements Page 97 Airborne Noise Protection neighbourhood amenity Page 2 (Appendix S8) Commissioning Test Demonstrate compliance with all relevant and appropriate noise and vibration criteria including underwater acoustics Minimise impacts from airborne noise Comply with EPA N3/89 during day and evening and with State Environment Protection Policy N-1 at night-time for the Leased Area. As per PS&PR and criteria as determined by project company Comply with the performance criteria Model and report predicted airborne noise levels during operation to demonstrate that the design meets the performance criteria. As part of the modelling and reporting exercise, include an assessment of tonality and other character adjustments with consideration to the relevant provisions of State Environment Protection Policy N-1. If found present, tonality or character adjustments should be eliminated through the detailed design stage. Alternatively, reduced noise limits with consideration to SEPP N-1 may be applicable. Compliance with nominated criteria P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 5

12 3.3 SEPP N-1 and N3/89 The Works Approval Application (WAA) and PS&PR both reference SEPP N-1 and N3/89. SEPP N-1 refers to State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1 (SEPP N-1). N3/89 refers to the Interim Guidelines for the Control of Noise from Industry in Rural Victoria, which is the most commonly referenced guidance for assessing noise from industrial and commercial premises outside the Melbourne metropolitan area. Note that this document provides guidance only and is not legislated policy for rural Victoria. These documents define noise limits for the three time periods as shown in Table 3. Table 3 SEPP N-1 time periods Period Day of Week Time Period Day Monday-Friday 7-hrs Saturday 7-hrs Evening Monday-Friday -22hrs Saturday Sunday -22hrs 7-22hrs Night Monday-Sunday 22-7hrs The assessment of noise emissions under SEPP N-1 and N3/89 is based on the calculation of a noise limit at a receiver position, taking into account the land use in the surrounding area and the ambient noise level. Once a noise limit is established, the noise emission is predicted. The noise emission from the site, when corrected for duration and/or character, is referred to as the 'effective noise level'. The predicted effective noise level is compared to the noise limit to determine if noise controls are required to comply with SEPP N-1. The effective noise level (L eff ) is the adjusted L eq of the noise source or sources measured over a 3-minute period. Appendix A provides relevant definitions for intrusive sound characteristics, as defined in SEPP N-1. The chart presented in Figure 1 overleaf depicts the variation in noise limit with background noise level for the designated planning zones of a given area. Section 6 provides details of the measured background noise levels from which the project noise limits can be derived. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 6

13 Figure 1: Rural noise limits according to SEPP N-1 & N3/89 vs. background noise level 4 NOISE MANAGEMENT PLAN 4.1 Identification of sources of noise The noise generating plant associated with operation of the VDP can be broadly categorised as follows: Internal operational plant contained within dedicated building structures External operational plant distributed around the site according to process requirements Mobile plant including vehicles and associated supply systems for the regular delivery of materials for the process plant. A comprehensive schedule of noise generating plant has been produced for each area of the site. The acoustic design team has relied on multi-disciplinary input from the process, O&M, mechanical and electrical design teams to produce this schedule. The process and O&M teams advise in regard to equipment redundancy and operational matters, including identification of equipment that does not run simultaneously (e.g. duty/standby pumps) and frequency and duration of operation. Operating conditions are reflected in the equipment list provided in Appendix C. Some examples include: Blowers in building 2C that do not run at the same time as the corresponding pump Allowance for one DMPF backwash per filter per day based on expectations that this is at the high end of normal operating conditions Operational factors including opening of maintenance doors and mobile equipment use P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 7

14 Intermittent operation of equipment such as the lime silo vibrator and turbo circulator extraction unit Daytime deliveries of water treatment chemicals and other materials required for the operation of the VDP Equipment sound power data The relevant technical information is included in the equipment schedule (Appendix C) which provides details of the location of the equipment, duty/standby plant numbers, function and power rating where appropriate. All significant items of plant are assigned a sound power level which provides the basis for cumulative modelling of site operations. The schedule also includes items of plant which are not assigned emission values as a result of their contribution being either insignificant, or their operation being restricted to periods when higher noise emission plant would be shutdown. The sound power level data assigned to the plant is derived from a range of sources, primarily based on certified manufacturer s data where available. Emission data from suppliers is requested in the form of power levels tested generally in accordance with the ISO 374 series of standards Acoustics - Determination of sound power levels of noise sources (or other specific standards applicable to certain types of equipment such as transformers). In each case, the sound power is based on sound pressure levels measured at a distributed range of locations at a fixed distance from the plant item in question. These sound pressure levels are then converted to sound power levels which are then used for calculation purposes by the application of a correction according to the surface area that the measured sound pressure levels envelope. Appendix C provides the current equipment schedule and sound power data referenced in the design and assessment of the VDP. The source of data in each instance is designated in the schedule. This schedule is routinely circulated, reviewed with representatives of the various design teams and updated in order that the schedules accurately reflect current equipment selections and design. In instances where the measurement data is designated as an MDA estimate, the source information derives from values derived from vendor preliminary data, MDA s database for equipment of a similar duty and rating, measurement data obtained by MDA at a similar desalination facility, or calculated sound power levels derived from empirical relationships. The use of an MDA estimate either indicates that certified manufacturer or factory acceptance test data is not yet available, or that the necessary information has been presented, but is the subject of ongoing clarification. In the latter case, the MDA estimate values are usually higher than the manufacturers claimed emission data, and therefore the higher value is retained in the model until the manufacturers data has been adequately verified by measurements according to the relevant test standard. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 8

15 An example of plant where the MDA estimate relates to calculated empirical data are the smaller centrifugal pumps distributed around the site. These types of pumps are commonly regarded as relatively low sound power sources; as a result, certified manufacturer s data is often either unavailable or limited in detail. The emissions of this type of plant have been calculated according to the empirical relationship set out in the recognised industry text Engineering Noise Control Handbook 4 th Edition (Bies & Hansen 29). This method provides a means of relating the power rating and speed of the pump to the expected octave band sound power level. This relationship has been used to assign emission levels according to one of four different ratings of pumps: less than 1kW, 5kW, 1 kw or 2 kw. Bies and Hansen also provide empirical relationships for other types of plant. This information has also been used as part of the review process for gauging the plausibility of manufacturer s sound power data for these other items. The plant procurement process includes requirements for suppliers to guarantee emission levels for key items of plant, in addition to requirements for suppliers to verify compliance by factory acceptance testing according to recognised Australian and International testing methodologies (including the ISO 374, ISO 1 and ISO 96 series of standards). The general submission requirements are that all data must be presented for approval in the form of octave band sound power levels between 63 and 4 Hz. In instances where equipment such as transformers may emit tonal noise, the testing requirements for factory acceptance have been extended to finer resolution information in the form of third octave bands at different load conditions. As the design has progressed and elements of the project are procured, the schedules are updated when certified data becomes available. A change control register is used to track updates to equipment operation and acoustic emissions Building element data Containment of the noisiest plant in dedicated process buildings results in secondary noise sources associated with breakout emissions from the various elements of the building envelope. A comprehensive schedule of building elements relevant to environmental noise levels has been compiled and documents a location, construction description, and sound insulation performance for each building element. These building elements include roofs, walls, windows, vehicle/personnel doors, and ventilation louvres/silencers. Input data for the sound insulation of building elements has been obtained from a combination of laboratory tests, predictions, and generic test data derived from recognised industry texts. As appropriate for key elements of the building envelopes, in situ field testing of selected sample products was carried out to validate the performance that can be reliably factored into the assessment. For example, this type of testing was carried out for roller doors. Appendix D provides the current schedule of building elements and the octave band in situ performance values used in the model. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 9

16 4.2 Control of tonal and low frequency noise EPA Works Approval No. WA6444 Clause 2.8(b) requires that the project "minimises any intrusive impacts, including from low frequency noise". As specified in the PS&PR Appendix S3 (p.), intrusive, tonal and low frequency noise will be assessed according to SEPP N-1 during commissioning. In the mean time, octave band design goals are being used as a tool to design for compliance with SEPP N-1, as suggested by N3/89 Note I which states: Where possible, designers should aim to meet octave band levels of L bg plus 5 db ~ 1 db. Therefore the project has adopted design goals using background L 9 octave band spectra plus 5 to 1dB. These spectra are not being used as limits. Rather the aim is to match the profile of the predicted spectrum of plant emissions to the background spectrum, to comply with the overall site limit while minimising peaks at specific frequencies. The assessment methods used to monitor and control these effects include comparative assessments of the noise contribution at receiver locations from items of plant which may emit tonal noise amidst the broader total site noise levels. In relation to key items of plant such as the main power supply transformers, stringent guarantees have been incorporated into the procurement documentation to limit the contribution of this type of plant. As noted in Section 4.1, these items of plant are subject to more detailed factory acceptance testing to verify emissions at varied load conditions and verify frequency emissions to a finer resolution. 4.3 Site acoustic model A three dimensional acoustic model is used to determine the impact of operational plant noise on the nearest residential properties. The model was prepared using SoundPLAN version 7 proprietary mapping software. This is one of the most sophisticated acoustic software packages available. The acoustic model for the VDP has been developed by MDA and incorporates all relevant building structures (and their constituent elements), external plant, and topographical profiles to represent both the surrounding land and the dunes being constructed as part of the development. The octave band building performance values and equipment emissions incorporated into the acoustic model are as scheduled in Appendix C and D of this report. All calculations within the acoustic model are carried out in octave bands. The acoustic model is firstly used to calculate internal sound pressure levels within each building containing noise generating plant. These internal calculations are based on the SoundPLAN Indoor Noise Module which utilises the German standard VDI 367 "Computation and measurement of sound propagation in workrooms" to account for direct, reflected and reverberant noise levels inside of the space. Further details of the internal noise level calculation are provided in section P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 1

17 The acoustic model then uses these calculated internal noise levels, in conjunction with the area of each building element and the assigned sound reduction values, to calculate the sound power levels radiated by each building element. The acoustic model then translates the sound power of each source on the site, including every building element and every external source, to an associated noise level contribution in the surrounding environment using the accepted engineering methods set out in ISO 96-1 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere and ISO 96-2 Acoustics Attenuation of sound during propagation outdoors Part 2: General method of calculation. The ISO 96 method is used to calculate the effect of ground, terrain, screening, atmospheric absorption and reflections on an octave band basis. The specific purpose of the standard is to calculate environmental noise levels under conditions that favour the propagation of sound such as certain wind and atmospheric temperature profiles. In the case of very large elements such as the RO building roof, the software divides the radiating element into multiple smaller areas which are then treated as distinct sub-sources which are separately calculated according to the ISO 96 methodology. This process accounts for the relevant separating distance and shielding geometry for each section of the building element. The implementation of the ISO 96 calculation method requires a number of choices to be made when predicting environmental noise levels. The specific details of the ISO 96 method as applied to the calculation of the VDP acoustic model are documented in Section In order to determine the total noise level at each point in the surrounding environment, the acoustic model as per the approach set out in ISO 96 sums the individual octave band contributions of each external source and building element, assuming incoherent addition of the different sources. The above process has been carried out to calculate total site noise levels at the nearest sensitive receivers on the VDP side of each dwelling. The calculated levels represent free-field levels and therefore do not include reflections from the facade of the dwelling at each property. This is consistent with the assessment methodology specified in SEPP N-1. The noise contour plots are calculated in the same manner and are based on the determination of the total noise level at each point on a 1m x 1m grid of the surrounding area. The determination of the noise level at each point in the grid is either based on direct calculation, or in the case of more distant positions where noise level variations are less pronounced, mathematical interpolation between adjacent calculated points. Each point on the grid is assigned a colour according to its values. Contours are then formed by a process of linking values of similar level and mathematical interpolation. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

18 4.4 Prediction methodologies Internal Noise Level Calculations The internal noise levels have been calculated within the SoundPLAN Indoor Noise Module on the basis of the German standard VDI 367 "Computation and measurement of sound propagation in workrooms". To calculate internal noise levels, the methodology takes account of the sound power level of each source, the distribution of sources within the space, and the mean sound absorptive properties of the internal floor, wall and ceiling linings of each space in each octave band. The method also accounts for the density of scattering objects within the space on the basis of a factor referred to as the mean sound propagation path. This factor has been set to zero for all calculations to yield the highest internal noise levels. The internal noise levels have also been calculated using separate software to determine the diffuse or reverberant noise level according the more conventional Sabine method. The results of the two calculation methods were then compared for each building to enable the characteristics of the internal sound field to be defined as required for the calculation of internal to external noise breakout. Specifically, this process involves defining a factor which represents whether the incident sound fields for the walls and ceilings are direct or reverberant, which in turn influences the portion of sound which will transmit out of the building structure. This factor is referred to as the diffusivity factor Cd as defined in BS EN 354-4: 2 Building acoustics - Estimation of acoustic performance of buildings based on the performance of elements Part 4: Transmission of indoor sound to the outside. The standard states the Cd to be the difference between the sound pressure level at 1 to 2m from the inside face of the relevant building element and the intensity level of the incident sound perpendicular to that element. The standard notes that for a diffuse field and reflecting walls, the diffusivity term Cd = -6dB and that for other situations it can have a value between and -6 db. A value of -6 db leads to lower calculated levels of sound breakout than with a value of db. The comparison between the VDI 367 calculated noise level and the Sabine calculation has been used as an indication to the appropriate choice of Cd. In cases where the two calculated values are similar, the VDI 367 calculated level has been assumed to be diffuse, and therefore a Cd of -6dB has been defined for the relevant building elements. In cases where the two calculated levels vary by more than 2 db, the value has been set to either or -3 db to account for the potential that the incident sound field is either direct or semi-diffuse respectively. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

19 4.4.2 Environmental Noise Level Calculations The ISO 96 standard has been applied to the VDP acoustic model according to the following definitions: Atmospheric conditions: 1 degrees Celsius and 7% relative humidity A maximum of 5 reflective noise paths from surrounding structures Barrier effects limited to 1 db for single diffraction and db for double diffraction. This is a project specific precautionary approach applied for long range barrier effects, in contrast to the stated general maximum values of 2 db and 25 db for single and double diffraction respectively. Lateral diffraction around structures is also included in the model Hard ground conditions (G=) on the site, and semi-soft ground conditions outside of the site (G=.5). The latter is a conservative assessment choice to reflect potentially drier ground conditions than the G=1 factor which would be strictly applied to grassland. See Figure 2 below. Figure 2: Approximate boundary of site area assigned as hard Adverse meteorological conditions are implicitly accounted for in the ISO 96 method. In this respect, ISO 96 specifically states that the method represents predicted noise levels under conditions which favour the propagation of sound such as downwind conditions or, equivalently, a well-developed moderate ground-based temperature inversion. For the purposes of this standard, downwind conditions are defined as wind directions between an angle of ±45 degrees of a direct wind from source to receiver, and wind speeds between 1 and 5m/s at a height of 3 to m above the ground. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

20 Additional caution in respect of adverse meteorological conditions has been applied by the use of the barrier attenuation limitations noted above. Wind from the VDP plant towards the north and north-west directions towards the residential properties at R3 and R5, represents the worst-case scenario from a noise perspective. Data from the Bureau of Meteorology and included in the baseline and EES reports indicates that the condition of wind from the south and south-east occurs for approximately 37% of the time (in spring) and 53% (in summer) when there is wind activity (including wind from the E, S and SE greater than 2m/s). Under this worst-case weather condition, it is estimated that the noise level at the residential area to the north-west of the Desalination plant could increase by about 3-5dBA compared to neutral conditions. This effect has been included in the results in Section 8. Not only has the project allowed for adverse propagation conditions, but extensive additional surveys of background noise subsequent to the project EES have been carried out, one in each season. These surveys identify meteorological conditions where background noise is low. The derived noise limits and octave band design goals are informed by this data. In summary, the model allows for adverse propagation of noise, and the project noise limits and octave band design goals allow for low levels of background noise under specific meteorological conditions. As with any engineering method used for the prediction of environmental noise, there is a residual degree of uncertainty between the predicted noise levels and the levels which may occur in practice. Account of this uncertainty has been made in the selection of the calculation settings, in the interpretation of the modelling results, and the design measures incorporated into the project. This is discussed further in subsequent sections. 4.5 Attenuation methods Landscaping A variety of solutions are being used to attenuate noise from the plant. Appendix E contains a drawing that shows how dunes are being used to shield residents close to the VDP site. The floor levels of the main process plant buildings are below natural ground level to enhance the shielding. This shielding is included in the acoustic model. Building features The building construction materials assumed in each scenario are summarised in Appendix D. Both operational scenarios (3 stream and 4 stream) have been analysed using the equipment quantities and sound power levels detailed in Appendix C and the building element acoustic performance detailed in Appendix D. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

21 Acoustic enclosures The project is required to comply with Victorian OH&S requirements. In fulfilling these requirements consideration has been given to the use of enclosures in terms of the benefit they may provide and the practical considerations relating to the efficient maintenance of the plant. However building treatments are more effective for this project for attenuating environmental noise and provide a greater assurance of longer term insulation measures. 4.6 Design reviews Model inputs and outputs such as building envelopes and layout design, construction materials and equipment data are reviewed by an MDA verifier. As recommendations are incorporated into the design documentation, MDA carry out reviews of drawing packages and associated specifications to verify that the intent of the design advice is reflected in the design documentation. Finally, independent acoustic specialists review the relevant design outputs to confirm that they meet expectations. 4.7 Review of vendor submissions Limits on acoustic emissions are included in supply contracts for equipment. A Factory Acceptance Test (FAT) is a requirement of the supply contracts for major items of plant. The design team establishes the method and condition requirements for this testing and reviews vendor testing proposals. The measurement data is then compared with the supplier guarantees and the data incorporated into the noise model. As appropriate, the modelling input data is modified as new information becomes available. This information is incorporated into the equipment and building schedules, and a change monitoring system is used to trace this information. Selected items of the building elements are also identified and reviewed by in situ testing carried out by the project team. This type of testing provides further assurances in respect of the acoustic attenuation measures included in the design of the VDP project. 4.8 Allowance for 2 GL/year The project acoustic model includes three streams. This corresponds to the GL/year operating condition of the Reference Project of the WAA. The potential future four stream operation has also been modelled to demonstrate that the 2GL/yr operation can also comply with project noise requirements. This modelling assumed that future design and equipment would be similar to those specified for the current three stream operation. The equipment list in Appendix C provides details of the equipment numbers associated with the potential 4 stream scenario factored into the noise model. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

22 4.9 Commissioning PS&PR commissioning requirements As per the project requirements, noise will be measured adjacent nearby residences to demonstrate compliance with the airborne noise criteria of the PS&PR which are defined in further detail in Section 7 of this report. The measurements will be made to determine the effective noise level of the plant over a 3 minute period under typical meteorological conditions which favour propagation of the sound from the plant to the nearest specified sensitive receivers. These measurements will be made for day, evening and night operating patterns of the site as well as for standby power plant. The effective noise level shall be determined by including any adjustments for acoustic character as defined in SEPP N-1 in the unlikely event that the design controls are not fully successful. The site would be deemed compliant if the effective noise level from the plant determined from these measurements complies with the project noise limits. A more detailed commissioning test procedure will be developed as part of the plant commissioning plans. Ongoing noise monitoring Equipment and building noise levels will be measured at the project s discretion following commissioning to: Confirm plant acoustic performance against predictions and vendor warranties Record baseline acoustic performance to assist in future maintenance and troubleshooting Check the integrity and performance of acoustic enclosures Finalise OH&S administrative and PPE requirements. 5 LOCATION OF NOISE SENSITIVE AREAS As part of the project scope, the VDP site was inspected in September 28 to confirm the locations of the nearest affected receivers. The reference terminology used is the same as that detailed in Appendix 5 of the Victorian Government EES. The nearest residential receivers to which the environmental noise requirements apply are listed in Table 4. These properties represent the critical dwelling locations for the ongoing design of the site; adherence to the relevant noise and vibration limits at these locations infers compliance at more distant residential locations. The nearest noise sensitive receiver to the site is R5 at 29 Mouth of Powlett Road to the north-west of the VDP. This is the most critical receiver. The approximate distances indicated below for properties to the north of the VDP site account for the potential future fourth stream of the project. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

23 Table 4 Noise Sensitive Receivers near the Wonthaggi Site Reference No. Description Co-ordinates Distance to RO building R3 285 Mouth of Powlett Road S '55.39" E '1." 595m R4 225 Mouth of Powlett Road S '5." E '21.31" 61m R5 29 Mouth of Powlett Road S '59.97" E '7." 52m R6 265 Lower Powlett Road S '." E '5.22" 1,845m R 375 West Area Road S '49.56" E '37.63" 1,86m The location of these receivers is shown in Figure 3 below. Figure 3: Noise-sensitive receivers around the Wonthaggi site P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

24 6 BACKGROUND NOISE MEASUREMENTS Measurements of background noise have been carried out to assist in defining limits and design goals for plant noise emissions. 6.1 Environmental Effects Statement (EES) surveys Consultant GHD carried out a two-week unattended noise monitoring survey at five locations to measure background noise levels at the Wonthaggi site, as part of the study undertaken for the Environmental Effects Statement (EES). These locations (N1 to N5) are shown on a map in Figure 4 below. Measurements were taken in March 27 and March 28. These results are reported in Appendix 5 of the EES. Daily arithmetic averages of L A9 were calculated by GHD for each of the three time periods as specified by SEPP N-1 (day, evening and night) at each location. The lowest daily arithmetic average for each time period is included for ease of reference in Table 5 below. The closest neighbouring houses to the site are near survey point N2. Therefore N2 is the critical location for the site. Table 5 Minimum arithmetic average L A9 values from the ESS Location Distance from the coast (m) Minimum average, L A9 db Day Evening Night N1 (1) ~ N2 ~ N3 (2) ~ N4 ~ N5 ~ (1) N1 located near the mouth of the Powlett River. Swell noise characteristics are therefore likely to be different from other locations. (2) N3 is the closest location to the coast-line P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

25 Figure 4: Locations of Wonthaggi site noise measurements and weather station 6.2 Further surveys MDA has carried out their own background noise surveys to provide additional reference data and to assess seasonal impacts. Data was collected at four locations (T1, T2, T3 and T4) at the Wonthaggi site as shown in Figure 3 above. The spring survey was performed over two weeks in September 29 The summer survey was performed over two weeks in December 29 The autumn survey was carried out during a site shut-down over Easter 21 The winter survey was carried out over the long weekend in June 21 during a site shut down. The closest neighbouring houses to the site are near survey point T1 located to the north west of the VDP. Due to its proximity, T1 is the relevant background noise reference for the most critical sensitive receiver locations near the VDP (comparable to GHD s position N2). For the nearest property to the south east of the VDP site, measurement location T2 is the relevant background monitoring position. T2 was chosen as the appropriate reference in lieu of T3 due to T2 being located further from the coast and the associated influence of surf noise. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc

26 Given the extent of additional surveys carried out, the assessment has been based on typical rather than the lowest recorded daily arithmetic average background noise levels. To represent typical lower noise levels recorded during the surveys, the 1th percentile of the daily arithmetic average of the L A9 background noise levels has been determined for the relevant assessment time periods defined in SEPP N-1 and N3/89. This analysis has been made on the basis of the summer and spring survey data. The lowest data obtained in autumn and winter indicated similar levels to the preceding seasons; however the data sets from these periods have not been included in the overall assessment as a result of potential construction noise influences. These values were calculated using the method in SEPP N-1, but using fifteen minute samples of L A9. Data affected by adverse conditions (wind speeds over 5m/s and rain affected times) was not included in the analysis. A summary of results is listed in Table 6 below. Table 6 Typical lower period averaged L A9 db values from MDA surveys Location Distance from the coast (m) Typical Lower Level L A9 db Day Evening Night 24 hour T1 ~ T2 ~ Table 7 details corresponding representative octave band spectra derived from periods in which the total background noise levels were similar to the values in Table 6. Table 7 Typical lower period averaged L 9 db octave band noise levels based on spring season measurements Location Octave band mid frequency k 2k 4k Hz T db T db 7 ENVIRONMENTAL NOISE LIMITS The PS&PR and Works Approval Application specify that noise emissions will comply with N3/89 or SEPP N-1 depending on location and time of day (refer Section 3 above). Numerical project noise limits (L eff dba) are derived from these documents according to the background noise level and the planning zones of the surrounding area. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 2

27 The derived limits presented in this report are deemed to include only the noise from operation of the VDP and not extraneous background noise from sources such as wind, surf, agricultural activities or fauna. As stated in Section 3, the PS&PR and the Works Approval Application specify that noise emissions from the Wonthaggi site will comply with: N3/89 during the day and evening time periods SEPP N-1 at night. The determination of project noise limits according to these two documents is generally identical except in areas where noise levels are very low. Clauses 2 and 3 of N3/89 provide relevant advice in this respect and are reproduced below. 2 Noise limits in provincial cities and rural areas where background sound levels are comparable to Metropolitan Melbourne shall be determined using the procedures of State Environment Protection Policy N-1. 3 Where background sound levels are very low (i.e. less than 25dBA at night or 3dBA during the day or evening period) the minimum limits for noise from industry should be: Day Evening Night 45 db(a) 37 db(a) 32 db(a) Measured at residential premises The noise survey data presented in Section 6 from the EES and MDA surveys demonstrates the day and evening noise levels are greater than 3 dba. Based on the above, noise limits consistent with the PS&PR are derived for the day and evening periods according to clause 2 of N3/89, and therefore according to the procedures set out in SEPP N-1. As stated in the WAA and the PS&PR, noise limits for the night are calculated according to SEPP N-1. The relevant noise limits calculated according to the WAA and the PS&PR and background data are presented in Table 8 along with the criteria set out in Table -4 of the Works Approval Application. Table 8 VDP Project noise limits according to the PS&PR and WAA Description Noise Limit Effective noise level, L eff dba Day Evening Night At receivers R3, R4 and R At receivers R6 and R WAA Table -4 R3, R4, R WAA Table -4 R6, R The above values have been derived according to the MDA survey findings presented in Section 6 which indicated typical lower background noise levels of 33 to 35 L A9 db P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 21

28 for the day, evening and night periods. Refer to Figure 1 on page 7 for a graph showing how the noise limit varies with background noise. The process operations of the VDP are designed to operate 24/7 and therefore must adhere to the limits for the most stringent period. The higher limit for the day period is relevant to most vehicle movements, maintenance, chemical deliveries and testing of equipment such as the emergency generators which are restricted to day time hours. 8 ENVIRONMENTAL NOISE ASSESSMENT 8.1 Predicted noise levels Predicted noise contributions for three stream operation ( GL/yr) are listed in Table 9. Data is listed for sensitive receivers R5 and R. R5 is the nearest sensitive receiver to the site, and is the most critical location. The location is shown on a map in Figure 2, to the north-west of the plant. R is located south east of the site. This receiver is included only to demonstrate the effect of the increased distance from the site on attenuation to sensitive receivers in that direction. Samples of the calculation process for individual sources at the site are provided in Appendix G. These sample calculations are provided for the RO building roof structure, the DMPF backwash building roof structure and one of the main power supply transformers. The sample calculations provide the input sound power data, details of the internal building noise level and building element sound power level where appropriate, the partial attenuation factors calculated according to ISO 96, and the total calculated noise level. Appendix H provides supplementary information as requested by the Victorian EPA. This Appendix provides further technical details including receiver heights, building and source heights, annotated dune elevations and drawings of several key buildings (Screen and Feed, DMPF, RO Building and Transfer Pump Station). P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 22

29 Table 9 Predicted plant noise at sensitive receivers R5 and R (3 Stream Scenario) Plant Noise Contribution (dba) Building / Area* R5 29 Mouth of Powlett Road NW of site R 375 West Area Road SE of site 1B - Seawater Lift Pump Station 2A - Screen and Feed Pump Station Building Emissions External Plant Subtotal Building Emissions External Plant Subtotal < B - Pre-treatment DMPF - - <1 <1 2C - DMPF Backwash 9 1 <1 2 2D - Backwash Effluent < E - RO Building 23 < <1 1 2G - RO Chemical Building 1 <1 1 <1 <1 <1 2H - Carbon Dioxide TBA TBA TBA TBA TBA TBA 2J - Lime Storage and Saturation 2K - Sodium Hypochlorite/FSA Building <1 <1 <1 <1 <1 <1 2M - Treated Water Storage TBA TBA TBA TBA TBA TBA 2N - Sludge Treatment 7 8 <1 9 2P - Stabilisation Ponds <1 < Q - Utilities Building 8 <1 8 <1 <1 <1 2T - Potabilisation System / Balancing Tower <1 < U - Administration Building <1 < V - Fire Building Emergency and occasional day time testing see discussion Emergency and occasional day time testing see discussion 2W - Standby Power Generation Standby and occasional day time testing see discussion 3A - Transfer Pump Station D - Power supply <1 Chemical Deliveries Limited deliveries during day time hours only see discussion Standby and occasional day time testing see discussion Limited deliveries during day time hours only see discussion Total plant noise Note: Building /Areas 2F, 2J, 2L, 2R and 2S codes not used on the project. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 23

30 The predicted noise levels in Table 9 are presented in terms of the total contribution from each building or outdoor area, as well as the cumulative total at each receiver. Many areas have not yet been finalised, and are still being fine-tuned as vendor data becomes available. Figures 5 and 6 following show the predicted octave band plant noise levels in relation to the provisional design goal at each receiver. These figures show the 5 to 1dB lower and upper margin above background levels suggested by Note 1 of N3/89. Refer to Table 7 for the octave band background data used in each Figure. 6 R5 -Predicted Total Levels & Design Goals Raw Total 5 T1 lower design goal T1 upper design goal B d 4 l L p v e L e re s u 3 re P d n u S o a r e L in Hz 5 Hz 25 Hz 5 Hz 1k Hz 2k Hz 4k Hz Frequency Hz Figure 5: Predicted noise levels overlaid on the design goals for R5 P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 24

31 6 R - Predicted Total Levels & Design Goals Raw Total 5 T2 lower design goal T2 upper design goal B d 4 l Lp v e L e re s u 3 re P d n u S o a r e L in Hz 5 Hz 25 Hz 5 Hz 1k Hz 2k Hz 4k Hz Frequency Hz Figure 6: Predicted noise levels overlaid on the design goals for R Nursery The predicted noise levels for the three stream operation are shown in a contour map in Figure 7. The site boundaries can be discerned by comparison with Figure 3 and the relevant site plan in Appendix B - Site Plans. Noise predictions have also been carried out for the projected additional process line associated with a possible future 4 th stream at the VDP. A noise contour plot for this situation is provided in Figure 8. The predicted noise at R5 is 32 dba. The predicted noise at R is 25 dba. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 25

32 Figure 7: Contour map of Predicted Noise Emissions from the Wonthaggi Site (3 Stream scenario) P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 26

33 Figure 8: Contour map of predicted noise emissions from the Wonthaggi Site (4 Stream scenario) P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 27

34 The predicted noise level presented in Section 8.1 relates to the regular operation of process plant at the site and assumes that all personnel and vehicle access doors are closed. Additional noise will occur from chemical deliveries during the day, periodic opening of roller doors for maintenance and access, and occasional activities such as testing of the emergency generators and fire pumps. Noise levels associated with these events are presented in Table 1 and are discussed in section 8.2 below. Table 1 Intermittent noise sources predicted noise levels Noise source Predicted Noise at R5 (dba) Fire Water Pumps (2V) <35 Emergency electricity generators (2W) <35 Lime chemical delivery 4 Other vehicle deliveries <35 All roller doors open <4 8.2 Compliance Assessment Overall predicted noise levels at the sensitive receivers are below the project noise limits for both scenarios. The predicted octave band spectrum is similar to or below the provisional design goal spectra, thus indicating control of low frequency noise. These comparisons support that the design is expected to comply with the requirements of the PS&PR and WAA. Additional factors to support the expected compliance of the facility are discussed in the following sections Noise Characteristics The noise emissions of the plant are primarily characterised by steady plant noise. However, various elements of the process involve operations which generate brief or periodic local increases in individual plant emissions. These include: 1. air release valves such as the vacuum and pressure relief valves associated with the filters in the DMPF area 2. discharge of water via orifice plates during maturation of the filters in the DMPF area 3. operation of the muncher and drum screen in the Screen and Feed area 4. operation of the lime silo pulse filter during the delivery of lime weekdays only 5. occasional opening of roller doors (discussed further in 8.2.2) 6. vehicle deliveries predominantly weekday only, but with a limited number of vehicle movements during the day on Saturday and Sunday (discussed further in 8.2.3). P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 28

35 The predicted noise levels at the relevant receiver locations presented in Table 9 and Figures 5 and 6 include the total contribution of sources 1, 2, 3 and 4 averaged over the relevant 3 minute assessment time period. However, consideration has also been given to the brief period in which these processes occur. These predictions found the resultant short term noise levels to be similar to or below the total combined steady noise level of the plant. Therefore adjustments for intermittency, impulsiveness or duration as defined by SEPP N-1 are not expected to be applicable. In relation to tonality, the main consideration relates to external plant. The key items of external plant with respect to potential tonality are the main power supply transformers followed by the distribution and variable speed drive transformers. Additional items that warrant consideration include electric pump motors and variable speed drives. The emissions of the transformers are controlled by way of stringent specification limits and requirements for detailed factory acceptance testing of finer resolution frequency information (one-third octave bands). The predicted total noise level associated with the main power supply transformers at the nearest sensitive receiver is less than dba, and the predicted noise levels for the smaller classes of transformers and pumps are lower. Limited information is available in respect of variable speed drives; however these are expected to represent a lower contribution than the transformers. Given that the total predicted noise level associated with each of these equipment categories is substantially lower than the total overall predicted level from all sources at the site, the likelihood of their individual characteristics being discernible amidst total plant and ambient noise environment is significantly reduced. Comparison of the predicted octave band spectra with the provisional octave band design goals derived according to N3/89 are also a relevant consideration for tonality. In this respect, predicted spectra are similar to or below the provisional design goal spectra. The above findings, in conjunction with the low magnitude of the predicted levels, support the conclusion that the project design and equipment specifications will be sufficient to control low frequency and tonal noise in accordance with the requirements of the PS&PR Personnel & Roller Access Doors The predicted noise levels presented in the preceding Sections are based on the scenario with all personnel and roller access doors being closed. These doors will be occasionally opened for routine inspections, maintenance works, and deliveries mainly during day time hours. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 29

36 To demonstrate the influence of these openings, reference is made to the predicted noise levels presented in Table 9 which indicate a total predicted noise level of 28 dba from all buildings at the nearest receiver R5. This predicted noise level is made up of contributions from roof structures, walls, and other elements of the building envelopes including personnel and vehicle access doors. In relation to the doors, even when fully exposed to the full sound field within each building with no obstructions, (ie every door fully open) the total contribution of all personnel and roller access doors from operational noise is less than 4 dba at R5 (refer Table 1). The modelling has shown that opening of the doors during the day results in predicted noise levels below the limit. This has been determined on the basis of an unrealistic assumption of all doors being simultaneously left open. In practice, only a limited number of doors would be open at one time, resulting in an increased margin of compliance with the daytime limit. It is expected that the access doors will remain closed during the night. However, the predictions indicate that opening several roller doors would still result in noise levels below the night and evening limits. Similarly, intermittent use of personnel access doors would still result in noise levels below the limit. Notwithstanding the above, the operation of personnel and roller doors throughout the project will be included in the management procedures for the site. This will include requirements for doors to be closed when not in use, and to centrally co-ordinate any irregular night time activity which involves roller door access to the buildings Vehicle Movements All heavy goods vehicle movements will occur during day time hours. Specifically, most vehicles associated with the supply of materials will be restricted to day time hours on weekdays. Additional movements relate to staff vehicles and approximately 3 to 4 sludge truck movements on Saturdays and Sundays. Tables and below provide an indicative summary of the estimated volume of heavy goods movements during operation of the site, as sourced from the project traffic management plan. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 3

37 Table Annual operational truck movements for each area Area Materials Transported Truck Type Movements per Year Timing Pre Treatment Sodium Hypochlorite 25t B Double 24 weekdays Pre Treatment Sulphuric Acid 38t B Double 4 weekdays Pre Treatment Ferric Sulphate / Ferric Sulphate (sludge) 38t B Double 2 weekdays Pre Treatment Coagulant Aid 8t Tanker 24 weekdays Reverse Osmosis Reverse Osmosis Reverse Osmosis Sodium Bisulphite 8t Tanker 24 weekdays Anti Scalant 25t B Double 36 weekdays Caustic Soda 38t B Double 2 weekdays Potabilisation Lime 32t B Double weekdays Potabilisation Polymer truck As required weekdays Potabilisation Carbon Dioxide 3t single trailer 24 weekdays Potabilisation Sodium Hypo 25t Tanker weekdays Potabilisation Fluorosilic Acid 25t B Double 36 weekdays Sludge Sludge Truck with 1t skip 7 days a week The following table summarises estimated traffic volumes according to daily average truck movements. Table Summary annual operational truck movements by vehicle type Period Estimated Average Daily Operational Vehicle Movements 3 Stream Operation Potential Future 4 Stream Operation Weekdays Saturday / Sunday 3 4 (sludge truck) 6 (sludge truck) An operational traffic circulation plan for the plant internal road network is shown in Appendix F. The majority of vehicles will be moving onto and around the site briefly and the majority of deliveries or collections will involve relatively low noise level activities such as minor vehicle pumps delivering liquids. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 31

38 The lime chemical deliveries are the primary consideration with respect to vehicle noise. Lime delivery will involve the operation of vehicle mounted supply systems (pumps and/or blowers) on the vehicle to feed the materials into the storage areas. The above total volumes indicate an average delivery rate of not more than 1 vehicle per day on weekdays. Each lime delivery would typically occur over a period of 1 to 2 hours. The precise noise emissions associated with lime deliveries will be refined as the supplier contracts progress. In advance, predictions have been made on the basis of relatively high sound power levels per vehicle of up to dba operating continuously over the full duration of a half hour assessment period. The predictions indicate a total noise level of approximately 4 dba at the nearest receiver R5. This is below the 45dBA day time criterion defined according to the PS&PR and WAA. Procurement of the supply contract for these deliveries will include requirements for the control of vehicle and pumping noise to ensure that associated noise levels within the project noise limits Emergency equipment The predicted noise from the diesel fire pumps and diesel standby electricity generators is detailed in Table 1. The fire pumps will occasionally be tested during weekday daytime hours. The fire pumps will only operate during other periods in the event of a fire, in which case the rest of the plant will be shut down and not producing noise. Similarly, the emergency generators will occasionally be tested during the day, but not at the same time as the fire pumps. They would only operate during other periods in the event of a site power failure, in which case the rest of the plant will be shut down and not producing noise. The generators produce only a small proportion of the total power required to run the plant, so the full plant cannot be run by standby generators. The generators provide backup power to critical control systems only. Therefore, the predicted total noise is noise from the process (Table 1) plus either fire pumps or standby generators during the day. For operation at any other time, the total plant noise would be due to the fire pumps or standby electricity generators alone. The applicable noise limits for emergency equipment are the limits specified in Table 8 plus 5 or 1dBA as per the method in SEPP N-1 depending on the time period. The predicted generator and fire pump noise complies with these noise limits Risk Management The preceding sections support that the design is expected to comply with the project noise limits in respect of total noise levels and character. The predicted noise levels also demonstrate a margin between the predicted noise levels and the levels that are required to be achieved in practice, thereby providing an allowance for assessment uncertainty. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 32

39 Notwithstanding these findings, environmental noise levels are inherently variable for a range of reasons. A risk management approach has been developed based on the identification of retrospective measures that could be implemented if the modelling assumptions and outcomes do not materialise in practice. The approach to risk management comprises the following: Ongoing review of supplier data including factory acceptance test submissions On site noise measurements during the early stages of commissioning to ensure that noise levels on site are consistent with the predictions and factory acceptance test data Retrospective installation of additional noise control treatment if required. The following items have been identified as candidates for additional retrospective noise control. The design incorporates dedicated space and design provisions for retrospective installation of a secondary acoustic door for the following buildings: 2A Screen and feed pump hall All (3) 2C Backwash buildings All (3) 2D Backwash effluent buildings 2E RO building on the north and west sides 2J Lime storage 2W Standby power generation 3A Transfer pump station. Items of external plant currently identified as candidates for retrospective attenuation if required include: 2J Lime silo pulse filters these items are currently predicted on the basis of what is considered to be high assumed emission data. This item/area is the subject of ongoing design and procurement and will be maintained on the candidate list as appropriate 4D Main power supply transformers and 2W 2kVA distribution transformers these units are currently predicted to represent very low contributions to total noise levels, but in recognition of the greater inherent uncertainty attached to the predictions, these units have been identified as items for which local screens, enclosures and/or acoustic louvres could be applied. The risk management of external sources will be refined as factory acceptance test data becomes available. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 33

40 9 CONCLUSION This report has been has been prepared to demonstrate predicted compliance with the operational environmental noise requirements of the Victorian Desalination Project (VDP) site near Wonthaggi. The acoustic modelling and baseline site surveys performed by Marshall Day Acoustics demonstrates that the predicted noise levels associated with the design and equipment selections achieve the project environmental noise limits. The selection of equipment, materials and configurations of the plant is being monitored and fine-tuned on an ongoing basis to ensure that that the acoustic requirements are achieved. The assessment also demonstrates that the design includes appropriate margins in relation to analysis of data from ambient noise surveys, determination of applicable noise limits and modelling uncertainties. P:\Project\29\2939ML\1 Documents Out\Reports\Rp VDP Environmental noise report - Stage 2B.doc 34

41 APPENDIX A DEFINITIONS AND ABBREVIATIONS General terminology DSE Department of Sustainability and Environment (Victorian Government) EES Environmental Effects Statement commissioned by the DSE (28) EPA Environment Protection Agency FAT Factory Acceptance Test MDA Marshall Day Acoustics Specialist acoustic consultant to the Design Consultants N1-N5 Locations of background noise measurement at the Wonthaggi site for the EES N3/89 Interim Guideline for Control of Noise from Industry in Country Victoria PBB Parsons Brinckerhoff Beca Joint Venture Project Design Consultants PPP Public Private Partnership PS&PR Project Scope and Performance Requirements Requirements of AquaSure Contract with DSE R1-R Noise sensitive receivers near the Wonthaggi site RO Reverse Osmosis SEPP N-1 State Environment Protection Policy No. 1 (Noise) T1-T4 Locations of background noise measurements by MDA at the Wonthaggi site TD Thiess Degrémont Joint Venture Design and Construction Contractor VDP Victorian Desalination Project WA Conditional Works Approval No 6444 issued in 29 by the EPA for this project in response to the WAA WAA Works Approval Application made by the DSE in 28 to the EPA for this project

42 Acoustic terminology Noise Ambient db dba Duration Frequency Hertz (Hz) Octave band Intermittent Impulsive Sound absorption Sensitive receiver Sound insulation L 9 L A9 L eq Unwanted sound. The ambient noise level is the noise level measured in the absence of the intrusive noise or the noise requiring control. Ambient noise levels are frequently measured to determine the situation prior to the addition of a new noise source. Decibel. The unit of sound level. A-weighted decibel. The A-weighting approximates the response of the human ear Adjustments for the duration that a sound is present during the relevant assessment period are provided by SEPP N-1. The relevant assessment methodologies are defined in section A2 of SEPP N-1. Sound can occur over a range of frequencies extending from the very low, such as the rumble of thunder, up to the very high such as the crash of cymbals. Sound is generally described over the frequency range from 63Hz to 4Hz (4kHz). This is roughly equal to the range of frequencies on a piano. Hertz is the unit of frequency. One hertz is one cycle per second. One thousand hertz is a kilohertz (khz). Sound, which can occur over a range of frequencies, may be divided into octave bands for analysis. The audible frequency range is generally divided into 7 octave bands. The octave band frequencies are 63Hz, 5Hz, 25Hz, 1kHz, 2kHz and 4kHz. SEPP N-1 defines an intermittent noise source as one that increases in noise level rapidly on at least two occasions during a 3 minute period and maintains the level for at least a 1 minute duration. The relevant assessment methodology is described in section A2 of SEPP N-1. Impulsive noise sources are characterised by a rapid increase in noise level over a short duration and the relevant procedure of their assessment is described in section A3 of SEPP N-1. When sound hits a surface, some of the sound energy is absorbed by the surface material. Sound absorption refers to ability of a material to absorb sound. As per SEPP N-1 the project will be deemed compliant if the free field noise levels at a location within 1m of the neighbouring residences comply with the project acoustic requirements. When sound hits a surface, some of the sound energy travels through the material. Sound insulation refers to ability of a material to stop sound travelling through it. Also known as sound reduction (R) or transmission loss (TL). The noise level exceeded for 9% of the measurement period measured in db. This is commonly referred to as the background noise level. The A-weighted noise level exceeded for 9% of the measurement period, measured in dba. This is commonly referred to as the background noise level. The equivalent, continuous sound level, commonly referred to as the average noise level and is measured in db.

43 L Aeq L eff L max L Cpeak L w (or SWL) Tonal WA WAA The A-weighted equivalent continuous sound level. This is commonly referred to as the average noise level and is measured in dba. The effective noise level of commercial or industrial noise determined in accordance with State Environment Protection Policy (Control of Noise from Commerce, Industry and Trade) No. N-1 (SEPP N-1). This is the L Aeq noise level over a half-hour period, adjusted for the character of the noise. Adjustments are made for tonality, intermittency and impulsiveness. The maximum noise level. The highest noise level which occurs during the measurement period, usually measured in dba. The C-weighted peak noise level measured or estimated at a worker s ear during any noisy event. Sound Power Level, the level of total sound power radiated by a sound source. Noise levels characterised by discrete and distinct frequency bands as determined by a one-third octave band analysis according to the relevant methodology described in section A3 of SEPP N-1. Works Approval Works Approval Application

44 APPENDIX B SITE PLANS

45 POWLETT RIVER EXISTING POST & WIRE FENCE RETAINED (TITLE BOUNDARY) AD E RO BUILDING 2-G RO CHEMICAL BUILDING 2-H 3 WETLAND 4 FOREDUNE CARBON DIOXIDE BUILDING 5 DESALINATION PROCESS OVERVIEW 6 COASTAL PARK OVERVIEW & TRAIL ORIENTATION LIME STORAGE AND SATURATION CHLORINE BUILDING 2-L FLUOROSILIC BUILDING 2-M TREATMENT WATER STORAGE 2-N SLUDGE TREATMENT 2-P STABILISATION POND 2-Q UTILITIES BUILDING F J 2-K COASTAL RESERVE (PARKS VICTORIA) BACKWASH EFFLUENT D DMPF BACKWASH COAL MINING C 2 LANDSCAPE FEATURES LEGEND: PRETREATMENT DMPF WIND FARM F B SCREEN AND FEED PUMP STATION F F ENERGISED SECURITY ET GATE UP A UP RO NE W CO mm BUND WITH WATER LEVEL CONTROL GATES, TOP OF BUND TO RL 2m ST RE T POTABILISATION SYSTEM / BALANCING TOWER 2-U ADMINISTRATION BUILDING 3-A TRANSFER PUMP STATION AH GATE WITH BOLLARDS FOR LOCKED AM ACCESS EQUESTRIAN WAYFINDING AND INTERPRETIVE SIGNAGE LEGEND: BRACKISH SUBMERGED MARSH -.4m TO -1.m BELOW NWL BOOM GATE GR BRACKISH DEEP MARSH -.2m TO -.4m BELOW NWL SEAWATER LIFT PUMP STATION / BRINE DISCHARGE B ARCHITECTURAL ELEMENTS LEGEND: S BRACKISH SHALLOW MARSH TO -.2m BELOW NWL FIRE BREAK TO BE DETERMINED IN DISCUSSION WITH DSE, CFA, & PARKS VICTORIA SECURITY GATE BRACKISH MARSHY MARGIN TO.2m ABOVE NWL LINK TO WILLIAMSONS BEACH COASTAL CAR PARK TO BE PROVIDED RESERVE PENDING APPROVAL FROM PARKS VICTORIA CAR PARK. BRACKISH SEDGE MARGIN.2m TO.4m ABOVE NWL E H F B BRACKISH GRASSY SEDGE.4m TO.6m ABOVE NWL S BRACKISH ESTUARINE SCRUB FEATURE ENTRY FENCE AND GATE F COAL MINE HISTORIC RESERVE (PARKS VICTORIA) PLANTED SWALE ENERGISED SECURITY FENCE F FEATURE PLANTING - TYPE 3 2.7m BLACK PVC COATED MESH FENCE WITH 3 STRANDS BARBED WIRE FEATURE PLANTING - TYPE 2 HARDWOOD TIMBER OR COMPRESSED PLASTIC) FEATURE PLANTING - TYPE 1 VIEWING DECK (AUST. PLANTATION HARDWOOD TIMBER OR COMPRESSED PLASTIC) BOARDWALK (AUST. PLANTATION HARDWOOD TIMBER OR COMPRESSED PLASTIC) SWALE CROSSING (AUST. PLANTATION AQUATIC (WETLAND) PLANTING SWAMP SCRUB (BRACKISH) PLANTING PICNIC SHELTER PUBLIC TOILET BIRD HIDE SWAMP SCRUB (FRESH) PLANTING 8mm X 1mm RECYCLED PLASTIC EDGING WITH PLASTIC STAKES AT 1.5m CRS F F WILLIAMSONS BEACH GREEN LINE PLANTING PO mm W GRAVEL STERILE ZONE LE TT WALL CLADDING FEATURE RO PRE CAST CONCRETE COLOURED AD LIVING ROOF PLANTING mm CRUSHED BASALT FEATURE MULCH mm SCORIA FEATURE MULCH DAMP HEATHLAND PLANTING ENGINEERED RETAINING WALL (UPTO MAX. 8.5m HIGH) F P 2 F F1 2-P G P F N mm CRUSHED GRANITE FEATURE MULCH VERSIWEB CELLULAR CONFINEMENT RETAINING STRUCTURE 3 F PARK BUS F PARK F BUS U PARK K 2 TRUC F1 LIVINGROOF IRRIGATION MAIN PUMP ER F F1 F 5 6 F LO W ER PO W LO LE W F1 AD RO C 2-D 2-B 2-C 2-D 2-B 2-C 2-D 2-B 2-A TT M 2-Q E. 3 8 F1 3 DAMP SANDS HERB RICH WOODLAND ON GRADE PLANTING PEDESTRIAN GRANITIC GRAVEL PAVEMENT WITH PLASTIC EDGING (1.5m WIDE) F1 5 F F M 2-T 2 WONTHAGGI TOWN DRAIN F1 4 3-A WALKING TRACKS GRANITIC GRAVEL WITH NO EDGING (1.5m WIDE) J F1 F1 2 F DAMP SANDS HERB RICH WOODLAND BATTER PLANTING H 2-K 2-L 4 F1 DAMP SANDS HERB RICH WOODLAND ON CONSTRUCTED DUNE PLANTING PEDESTRIAN GRADE EXPOSED AGGREGATE COLOURED INSITU CONCRETE PAVEMENT (1.8m WIDE) F1 3 - COAST BANKSIA WOODLAND ON CONSTRUCTED DUNE PLANTING PEDESTRIAN GRADE FEATURE PAVEMENT COAST BANKSIA WOODLAND ON GRADE PLANTING F COAST BANKSIA WOODLAND ON EXISTING DUNE PLANTING VEHICULAR GRADE CONCRETE HARDSTAND SEMI VEHICULAR GRADE CRUSH ROCK / SPRAY SEAL PAVEMENT WITH NO EDGING (7m WIDE) OVA F1 2 SEMI PAU ERI MEL TUBE FEATURE TREE PLANTING ALLOCASUARINA VERTICILATA BANKSIA INTEGRIFOLIA EUCALYPTUS VIMINALIS EUCALYPTUS PAUCIFLORA EUCALYPTUS OVATA MELALEUCA ERICIFOLIA AD RO F1 F TT F 3 EUC VEHICULAR GRADE BITUMEN PAVEMENT WITH GRASSED SWALE (7m WIDE) EXSITING VEHICULAR ROAD SEMI EUC VIM 3 INT BAN SEMI EUC LE 1. SEMI VER 2 EXISTING WALKING TRAIL ALL F OW P OF EXISTING VEGETATION REMOVED 3 2. H UT MO EXISTING VEGETATION RETAINED 2 2 EXISTING STRUCTURE REMOVED SOFT WORKS 2 EXISTING STRUCTURE HARD WORKS Ch LANDSCAPE & ECOLOGICAL WORKS LEGEND: N LANDSCAPE & ECOLOGICAL WORKS LEGEND: TRUE NORTH -23 ENTRY FEATURE GRAVEL BEDS DUNE COPSES INTERDUNAL WOODLAND REST AREA STORMWATER TREATMENT WETLAND WATER STORAGE POND (IRRIGATION REUSE) CAPTURED ROOF RUN OFF VISITOR CARPARK PLANT VIEWING DECK SECURITY ENTRY VALLEY APPROACH CONSTRUCTED DUNES TREATED WATER STORAGE ACOUSTIC / VISUAL CONSTRUCTED DUNES EMERGENCY ACCESS ROAD / SHARED TRAIL WATER QUALITY IMPROVEMENT WETLAND / HABITAT FOR MIGRATORY BIRDS AND AQUATIC FAUNA WETLAND VIEWING DECK BIRD HIDE COASTAL DUNE RESTORATION ZONE EXISTING VEGETATION TO BE PROTECTED AND RETAINED EMERGENCY ACCESS TO PLANT AREA SHARED PATHWAY / EQUESTRIAN CONNECTION TO GRAHAM STREET WALKING TRAIL LINK / BEACH ACCESS OPTIONAL REVEGETATION AREA (PARKS VICTORIA COASTAL RESERVE) WIND FARM 1 PLAN PRELIMINARY ISSUE Scale: 1:5 NOT FOR CONSTRUCTION A1 ORIGINAL SCALES CLIENT PROJECT DO NOT SCALE THIS DRAWING - USE FIGURED DIMENSIONS ONLY VERIFY ALL DIMENSIONS ON SITE F RE-ISSUED FOR APPROVAL AL HG F 1.1 ISSUED FOR APPROVAL AL HG SG ISSUED FOR STAGE 2 REVIEW AL WS KB D 1.1 ISSUED FOR STAGE 1 REVIEW AL WS KB VER DATE DRAWN CHECK APPVD FULL SIZE A1 HALF REDUCTION A3 SCALE (m) SIGNED DATE RPEQ No. VICTORIAN DESALINATION PROJECT DESALINATION PLANT DP2-21 SITE WIDE LANDSCAPE & ECOLOGICAL WORKS LANDSCAPE MASTER PLAN GL CAPACITY APPROVED FOR AND ON BEHALF OF THE THIESS / DEGREMONT JV SG E DESCRIPTION 5 TYPE ORIG. DISC. AREA DG ASP LA 2 SUB-AREA ZONING No X DRG. NO. REV. VERSION 1 F 1

46 1mm AT FULL SIZE DG-PBB-GE--X-- NOT FOR CONSTRUCTION C..1 ISSUED FOR INFORMATION ASP MW SEG SCALES Full Size 1:1 ; Half Reduction 1:2 SCALE (mm) A1 ORIGINAL DO NOT SCALE THIS DRAWING - USE FIGURED DIMENSIONS ONLY VERIFY ALL DIMENSIONS ON SITE APPROVED FOR AND ON BEHALF OF THE THIESS / DEGREMONT JV CLIENT PROJECT VICTORIAN DESALINATION PROJECT OVERALL DESALINATION PLANT KEY PLAN C AMENDED PROPOSAL ASP RH C 2669 ISSUED FOR COMMENT ASP SG VER DATE DESCRIPTION DRAWN CHECK APPVD SIGNED DATE RPEQ No. TYPE ORIG. DISC. AREA SUB-AREA ZONING No DRG. NO. REV. VERSION DG PBB GE X C

47 APPENDIX C EQUIPMENT LIST

48 VICTORIAN DESALINATION PROJECT EQUIPMENT LIST - NOISE SOURCES 4 Stream - 2 GL/yr 3 Stream - GL/yr Area Internal / External Equipment Type Function / Equipment Name Total Duty for 2 GL/yr Standby for 2 GL/yr Total Duty for GL/yr Standby for GL/yr Power Input (kw unless otherwise stated) 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz Total Per Unit dba Total Per Type dba Source of Data 1B - Seawater Lift Pump Station Lift Pumps Station external Valve 1B Seawater Lift Pump Vacuum Breaker Valve n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor actuator air release Lift Pumps Station internal pump and motor fully submerged beneath several metres of water, and Centrifugal Pump 1B Seawater Lift Pump to Drum Screens n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a /external contained with a fully closed pit Lift Pumps Station external Lifting Davit 1B Lifting Device for Stoplog at Seawater Lift Pumps n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only 2A - Screen and Feed Pump Station Pump Hall internal Pipe 2A Inlet Piping MDA Estimate Derived from Perth Sound & Vibration Measurements Pump Hall internal Centrifugal Pump 2A DMPF Feed Pumps Sulzer based MDA estimate Stream 1 & 2 Electrical Switchroom internal Transformer (LV) 2A Transformers Stream 1 & 2-5 kva kva ABB guaranted based MDA derived value Sulfuric Acid internal Diaphragm Pump 2A Sulfuric Acid Dosing Pumps for RO Neutralisation < MDA estimate Sulfuric Acid internal Diaphragm Pump 2A Sulfuric Acid Dosing Pumps for RO Cleaning < MDA estimate Seawater Switchroom internal Transformer (LV) 2A Transformers SWLP - 3 kva kva ABB guaranted based MDA derived value Stream 3 Electrical Switchroom internal Transformer (LV) 2A Transformers Stream 3-5 kva kva ABB guaranted based MDA derived value Pretreatment Chemical Building internal Diaphragm Pump 2A Sodium Hypochlorite Dosing Pump to Intake Risers / Shaft < MDA estimate Pretreatment Chemical Building internal Diaphragm Pump 2A Coagulant Aid Dosing Pumps to DMPF < MDA estimate Pretreatment Chemical Building internal Diaphragm Pump 2A Ferric Sulfate Dosing Pumps to DMPF < MDA estimate Pretreatment Chemical Building internal Diaphragm Pump 2A Sulfuric Acid Dosing Pumps for DMPF < MDA estimate Pretreatment Chemical Building internal Diaphragm Pump 2A Sodium Hypochlorite Dosing Pump to DMPF Backwash < MDA estimate Stream 3 Electrical Switchroom internal Transformer (LV) 2A Transformers Stream 3-3 kva kva ABB guaranted based MDA derived value Pump Hall internal Submersible Pump 2A Drainage Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level pump intermittently used for draining a small sump Pump Hall internal Hoist 2A Hoist n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Pump Hall internal Overhead-Travelling Crane 2A Overhead Crane n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Pretreatment Chemical Building internal Electrical 2A Chem 2 Switchroom n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant plant with respect to noise Pretreatment Chemical Building external Deliveries 2A Truck deliveries MDA historic records Drum Screen external Centrifugal Pump 2A Cleaning Water Pump < MDA estimate Screen & Feed external Ventilation 2A Mechanical Ventilation Outlets MDA attenuation design advice Mechanical Services external Ventilation 2A Mech Vent Outlets 8mm Transformer Fans MDA estimate Mechanical Services external Ventilation 2A Mech Vent Outlets 8mm Chemical Bldg Fans MDA estimate Drum Screen external Centrifugal Pump 2A Drum Screens Pit Pump < MDA estimate Mechanical Services external Ventilation 2A Mech Vent Inlets 5mm Fans MDA estimate Pretreatment Chemical Building external Submersible Pump 2A Pre-Treatment Chemical Building Sump Pump < MDA estimate Drum Screen external Muncher 2A Muncher Only 2 operate at 1 time - Mono based MDA estimate Drum Screen external Rotary Drum Feeder 2A Drum Screen initial indications are that noise will not be significant - manufacturer test data in preparation to confirm Drum Screen external Rotating screw conveyor 2A Dewatering screw (subject of current VN - to be confirmed) awaiting confirmation of status - minor equipment expected to be insignificant 2B - Pretreatment DMPF DMPF external Pipe 2B Pipe radition during filter backwash MDA estimate DMPF external Valve 2B Non-return air valve MDA estimate DMPF external Valve 2B Filter Inlet Control Valve MDA estimate DMPF external Valve 2B Maturation Control Valve MDA estimate DMPF external Valve 2B Maturation Control Valve MDA estimate DMPF external Orifice Plate 2B Maturation Orifice Plate MDA estimate DMPF external Orifice Plate 2B Maturation Orifice Plate MDA estimate DMPF external Module Battery 2B DMPF Front Face Module n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not significant noise source DMPF external Pump 2B Drainage Pit Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a minor intermittent use pump - not significant noise source 2C - DMPF Backwash Filter Backwash internal Centrifugal Pump 2C DMPF Backwash Pump Sulzer based MDA estimate Filter Backwash internal Submersible Pump 2C Drainage Pump < MDA estimate DMPF Backwash Air Blowers internal Fan 2C DMPF Backwash Building Ventilation Fan < MDA estimate DMPF Backwash Air Blowers internal Blower 2C DMPF Backwash Air Blower n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Blowers do not operate at the same time as higher emission backwash pumps DMPF Backwash Air Blowers internal Fan 2C DMPF Backwash Air Blower (Acoustic Enclosed) Blowers do not operate at the same time as higher emission backwash n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Ventilation Fan pumps Filter Backwash internal Overhead-Travelling Crane 2C Overhead Crane - Maintenance in DMPF Backwash Building n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Low use and low noise level maintenance plant - day use only Mechanical Services external Ventilation 2C Vent Intake Fans MDA estimate 2D - Backwash Effluent DMPF Backwash Effluent Tank internal Centrifugal Pump 2D DMPF Backwash Effluent Pump to Densadeg Sulzer guaranteed sound pressure DMPF Backwash Effluent Tank internal Submersible Agitator 2D Submersible Mixer - DMPF Backwash Effluent Tank A/B MDA estimate DMPF Backwash Effluent Tank internal Submersible Pump 2D Drainage Pump - DMPF BW Effluent Drainage Pit MDA estimate DMPF Backwash Effluent Tank internal Overhead-Travelling Crane 2D Overhead Crane - Maintenance in DMPF Backwash Effluent Building n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Mechanical Services external Ventilation 2D Vent Intake Fans MDA estimate 2E - RO Building RO 1st Pass internal ERD 2E Energy Recovery Device MDA estimate RO 1st Pass internal Pump 2E HP Pump to RO 1st PASS Feed Torishima revised data sheet - provided /4/1 - no enclosures RO 2nd Pass internal Pump 2E HP Pump for Feed to RO 2nd Pass Estimate based on Torishima 1st pass pump data RO Various internal Pipe 2E Piping Emissions MDA Estimate Derived from Perth Sound & Vibration Measurements RO 1st Pass internal Pump 2E Booster Pump to RO 1st PASS Feed Estimate based on Torishima 1st pass pump data Permeate for Service Water internal Centrifugal Pump 2E RO 2nd Pass Permeate Service Water Pumps (6.5 bar) < MDA estimate

49 VICTORIAN DESALINATION PROJECT EQUIPMENT LIST - NOISE SOURCES 4 Stream - 2 GL/yr 3 Stream - GL/yr Area Internal / External Equipment Type Function / Equipment Name Total Duty for 2 GL/yr Standby for 2 GL/yr Total Duty for GL/yr Standby for GL/yr Power Input (kw unless otherwise stated) 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz Total Per Unit dba Total Per Type dba Source of Data RO 1st Pass internal Pump 2E Feed to Plate Heat Exchanger from 1st Pass Brine Suction Tank < MDA estimate RO Cleaning and Flushing Unit internal Centrifugal Pump 2E Drainage Pit 1 Pump - RO Building < MDA estimate Permeate for Service Water internal Centrifugal Pump 2E RO 1st Pass Permeate Service Water Pump (1 bar) < MDA estimate Permeate for Service Water internal Centrifugal Pump 2E RO 1st Pass Permeate Service Water Pump (8 bar) MDA estimate RO 1st Pass internal Pump 2E Feed to Plate Heat Exchanger from 2nd Pass Permeate Suction Tank MDA estimate RO 1st Pass internal Valve 2E Condensate Valve no input information available at present - not expected to be significant amidst large pumps RO 1st Pass internal Fan 2E Ventilation Fan for HP Pump (Acoustic Enclosure) n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a no longer proposed - no enclosure assumed in model RO 1st Pass internal Fan 2E Ventilation Fan for Booster Pump (Acoustic Enclosure) n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a no longer proposed - no enclosure assumed in model Cartridge Filter internal Cartridge Filter 2E Cartridge Filter n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - low flow passive filter RO Cleaning and Flushing Unit internal Centrifugal Pump 2E 1st Pass and 2nd Pass RO CIP / Flushing Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a only operates when higher noise equipment is shut down RO Cleaning and Flushing Unit internal Pump 2E Boiler Recirculation Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO Cleaning and Flushing Unit internal Centrifugal Pump 2E 1st Pass RO Flushing Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a only operates when higher noise equipment is shut down RO Cleaning and Flushing Unit internal Centrifugal Pump 2E 2nd Pass RO Flushing Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a only operates when higher noise equipment is shut down RO Cleaning and Flushing Unit internal Agitator 2E Mixer in Cleaning Solution Tank n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a only operates when higher noise equipment is shut down RO 1st Pass internal Positive Displacement Pump 2E Feed Pump to RO Membrane Module for Testing Skid n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO Cleaning and Flushing Unit internal Submersible Pump 2E Submersible Neutralisation Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump Permeate for Service Water internal Centrifugal Pump 2E Carbon Dioxide Dosing Feed Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO 1st Pass internal Helical Agitator 2E Mixer in Reagent Tank for Membrane Testing Skid n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor equipment Permeate for Service Water internal Centrifugal Pump 2E Lime Saturation Feed Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO 2nd Pass internal Positive Displacement Pump 2E Feed Pump to RO Membrane Module for Testing Skid n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO 1st Pass internal Pump 2E Feed Pump to Heat Exchanger to Membrane Testing n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO 2nd Pass internal Centrifugal Pump 2E Feed Pump to Heat Exchanger to Membrane Testing n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - minor pump RO 2nd Pass internal Helical Agitator 2E Mixer in Reagent Tank for Membrane Testing Skid n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a only operates when higher noise equipment is shut down RO 1st Pass internal Overhead-Travelling Crane 2E Overhead Crane - Maintenance in HP and Booster n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only RO Cleaning and Flushing Unit internal Tubular, Finned Heat Exchanger 2E Electrical Boiler for Heating RO Cleaning Solution n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Permeate for Service Water internal Hoist 2E Hoist for Maintenance of Service Groups n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Permeate for Service Water internal Hoist 2E Hoist for Maintenance of Carbon Dioxide Dosing Groups n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Permeate for Service Water internal Lifting Davit 2E Lifting Device for the Stoplogs n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only RO 1st Pass internal Heating Element 2E Heating Element for Reagent Tank n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a not signficant - no fans or moving parts RO Building internal Transformer (LV) 2E Transformer - 3 kva 3 kva ABB guaranted based MDA derived value RO Building internal Transformer (LV) 2E Transformer - 2 kva kva ABB guaranted based MDA derived value RO Transformer Bays - west elevation extermal Ventilation 2E Transformer Bay Ventilation Outlets per transformer - values as per 2A assumed in advance of design RO Cleaning and Flushing Unit extermal Fan 2E Extraction Fan in Neutralisation Tank to Out of Building no input information available - attenuation to be designed as per site wide ventilation RO Building external Fan 2E Vent Intake Fans??? TMM to confirm 2G - RO Chemical Building Caustic Soda internal Diaphragm Pump 2G Caustic Soda Dosing Pumps for RO Cleaning < MDA estimate Caustic Soda internal Centrifugal Pump 2G Caustic Soda Transfer Pumps < MDA estimate Sodium Bisulfite internal Diaphragm Pump 2G Sodium Bisulfite Dosing Pumps to RO Feed Water < MDA estimate Caustic Soda internal Diaphragm Pump 2G Caustic Soda Dosing Pumps for 2nd Pass RO < MDA estimate Antiscalant internal Diaphragm Pump 2G Anti-Scalant Dosing Pump for RO 2nd Pass < MDA estimate Antiscalant internal Diaphragm Pump 2G Anti-Scalant Dosing Pump for RO 1st Pass < MDA estimate Ferric Sulfate internal Diaphragm Pump 2G Ferric Sulfate Dosing Pumps to Sludge Treatment < MDA estimate Sodium Bisulfite internal Diaphragm Pump 2G Sodium Bisulfite Dosing Pump to Densadeg Clarifier < MDA estimate Citric Acid internal Diaphragm Pump 2G Citric / Hydrochloric Acid Transfer Pump for RO < MDA estimate Biocide internal Diaphragm Pump 2G Biocide Transfer Pump for RO Cleaning < MDA estimate Detergent internal Diaphragm Pump 2G Detergent Transfer Pump for RO Cleaning < MDA estimate Sodium Bisulfite internal Diaphragm Pump 2G Sodium Bisulfite Dosing Pump for RO Cleaning < MDA estimate Sodium Bisulfite internal Diaphragm Pump 2G Sodium Bisulfite Dosing Pump for Intake Bypass < MDA estimate Caustic Soda internal Diaphragm Pump 2G Caustic Soda Dosing Pumps for RO Neutralisation < MDA estimate Overhead Crane internal Overhead-Travelling Crane 2G Overhead Crane - Maintenance for Cartridge Filters n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Caustic Soda internal Heating Element 2G Heating Element for Caustic Soda Storage Tank n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a electric element based heating system - insignificant noise generation RO Chemical Building external Deliveries 2G Truck Deliveries PB reference data for similar operations RO Chemical Building external Submersible Pump 2G RO Chemical Building Sump Pump < MDA estimate Mechanical Services external Ventilation 2G Vent Intake Fans MDA estimate 2H - Carbon Dioxide Area Carbon Dioxide internal Heat Exchanger with Fan 2H Vapouriser Fan - Carbon Dioxide Distribution System n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Carbon Dioxide internal Heating Element Resistor 2H Electrical Heater - Carbon Dioxide Distribution System n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Reviewed with Worley Parsons 5/3/1 and noted to be electrical with no fans Reviewed with Worley Parsons 5/3/1 and noted to be electrical with no fans Carbon Dioxide Area external Deliveries 2H Truck Deliveries no input information available at this time 2J - Lime Storage and Saturation Lime internal Centrifugal Pump 2J Lime Water Dosing Pump MDA estimate Polymer internal Agitator 2J Polymer Preparation Tank Agitator - Lime Water MDA estimate Lime internal Helical Agitator 2J Lime Milk Preparation Tank Agitator MDA estimate Permeate for Service Water internal Centrifugal Pump 2J Lime Saturation Feed Pump MDA estimate Lime internal Centrifugal Pump 2J Lime Milk Pump to Turbocirculator MDA estimate Polymer internal Fan 2J Vacuum Pump for Polymer Preparation Unit Skid for Lime Water MDA estimate Polymer internal Screw Feeder 2J Screw Conveyor - Lime Water MDA database #54

50 VICTORIAN DESALINATION PROJECT EQUIPMENT LIST - NOISE SOURCES 4 Stream - 2 GL/yr 3 Stream - GL/yr Area Internal / External Equipment Type Function / Equipment Name Total Duty for 2 GL/yr Standby for 2 GL/yr Total Duty for GL/yr Standby for GL/yr Power Input (kw unless otherwise stated) 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz Total Per Unit dba Total Per Type dba Source of Data Polymer internal Screw Pump 2J Polymer Dosing Pump to Lime Water Turbocirculator MDA estimate Lime internal Feed Pumps 2J C2 Service Water Feed Pumps no input information available at present - not expected to signficantly alter internal levels Lime internal Centrifugal Pump 2J 2nd Pass Permeate Service Water Feed Pumps no input information available at present - not expected to signficantly alter internal levels Lime internal Lifting Davit 2J Lifting Device for the Stoplog on Saturated Water Tank n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Lime internal Hoist 2J Hoist Truck for Maintenance for Lime Water Dosing Pumps n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Lime internal Switchroom 2J Electrical Switchgear n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a no significant noise sources Lime external Deliveries 2J Truck deliveries Lime external Helical Agitator 2J Mixer in Turbocirculator / Lime Saturator MDA estimate Lime external Agitator 2J Lime Sludge Mixing Tank Agitator MDA estimate Lime external Silos 2J Lime Silo Pulse Filter Supplier sound pressure level and MDA estimated spectra - only one unit operating at 1 time Lime external Vibrator 2J Silo Discharge Unit Supplier sound pressure level data & indicative MDA spectra Lime external Tank/Scraper 2J Turbocirculator Rotating Bridge < MDA estimate Lime external Dosing Screw 2J Loss in weight feeder (conveyor) MDA database #54 Lime external Helicoidal Rotor Pump 2J Lime Sludge Extraction Pump (from Saturator) MDA estimate - modelled as only 1 of 3 operating at a time Lime external Helicoidal Rotor Pump 2J Lime Sludge Transfer Pump MDA estimate Lime external Submersible Pump 2J Lime Building Sump Pump < MDA estimate Mechanical Services external Ventilation 2J Vent Intake Fans MDA estimate Facade external Ventilation 2J Ventilation Intake MDA estimate Facade external Ventilation 2J Ventilation outlets MDA estimate 2K - Hypo & FSA Hypo & FSA internal Submersible Pump 2K Fluorsilicic Acid Transfer Pump < MDA estimate Hypo & FSA internal Diaphragm Pump 2K Sodium Hypochlorite Dosing Pump to Potabilisation < MDA estimate Hypo & FSA internal Diaphragm Pump 2K Fluorosilicic Acid Dosing Pump < MDA estimate Hypo & FSA internal Switchroom 2K Electrical Switchgear n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a no significant noise sources Hypo & FSA external Deliveries 2K Truck deliveries Hypo & FSA external Submersible Pump 2K Hypo & FSA Chemical Sump Pump < MDA estimate Mechanical Services external Ventilation 2K Vent Intake Fans MDA estimate Hypo & FSA external Fan 2K Extraction Fan for Fluorosilicic Acid Tank Area no input information available - attenuation to be designed as per site wide ventilation 2M - Treated Water Storage Treated Water Sampling external Centrifugal Pump 2M Treated Water Sampling Pump < MDA estimate Treated Water Storage external Centrifugal Pump 2M Rainwater Drainage Pump for Top of Bladder on Treated Water Tank < MDA estimate Treated Water Storage external Submersible Pump 2M Treater Water Sump Pump no input information at present - not expected to represent a significant noise source 2N - Sludge Treatment Polymer internal Fan 2N Vacuum Pump for Polymer Preparation Unit Skid MDA estimate Polymer internal Fan 2N Vacuum Pump for Polymer Preparation Unit Skid MDA estimate Polymer internal Feeder 2N Screw Feeder - Densadeg MDA estimate Centrifuges internal Screw Conveyor 2N Sludge Collection Screw Conveyor MDA estimate Centrifuges internal Screw Conveyor 2N Centrifuge Discharge Screw Conveyor MDA estimate Polymer internal Feeder 2N Screw Feeder - Centrifuge MDA estimate Centrifuges internal Centrifuge 2N Sludge Dewatering Centrifuge Andritz based MDA estimate Densadeg Clarifiers internal Helicoidal Lobe Pump 2N Sludge Recirculation/Duty/Extraction Pump for < MDA estimate Polymer internal Agitator 2N Polymer Preparation Tank Agitator - Densadeg MDA estimate Polymer internal Agitator 2N Polymer Preparation Tank Agitator - Centrifuge MDA estimate Sludge Mixing Tanks internal Agitator 2N Agitator and Air Diffuser for Sludge Mixing Tank MDA estimate Sludge Mixing Tanks internal Helicoidal Lobe Pump 2N Sludge Feed Pump to Centrifuge < MDA estimate Polymer internal Vibrator 2N Hopper Vibrator - Densadeg MDA estimate Polymer internal Vibrator 2N Hopper Vibrator - Centrifuge MDA estimate Centrifuges internal Submersible Pump 2N Sludge Site Drainage Pump to Densadeg < MDA estimate Polymer internal Screw Pump 2N Polymer Dosing Pump - Centrifuge < MDA estimate Polymer internal Screw Pump 2N Polymer Dosing Pump to Densadeg Clarifier - Densadeg < MDA estimate Centrifuges internal Screw Conveyor 2N Sludge Skip Screw Conveyors no input information at present Centrifuges internal Hoist 2N Hoist Truck for Maintenance of Sludge Dewatering n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Sludge Mixing Tanks internal Lifting Davit 2N Lifting Device for Maintenance of the Air Diffusers n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Centrifuges internal Lifting Davit 2N Lifting Device for Polymer Storage on Centrifuge Level n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Sludge Mixing Tanks internal Hoist 2N Hoist for Manintenance of Sludge Feed Pumps n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Densadeg Clarifiers external Scraper 2N Agitator for Densadeg Clarifier MDA estimate Facade external Ventilation 2N Ventilation Discharge MDA estimate Facade external Ventilation 2N Ventilation Intake MDA estimate Densadeg Clarifiers external Mixer 2N Densadeg Feed Well Mixer no input information Mechanical Services external Ventilation 2N Vent Intake Fans MDA estimate Densadeg Clarifiers external Tank 2N Densadeg Clarifier/Scraper n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low speed insignificant noise source 2P - Stabilisation Pond Stabilisation Pond external Centrifugal Pump 2P Stabilisation Pond Drainage Pump to Outfall < MDA estimate 2Q - Utilities Utilities Building Switchroom external Transformer (LV) 2Q Transformer - kva ABB guaranted based MDA derived value 2R - Electrical Building Sludge Treatment (see 2S - Electrical Buliding Seawater Liftpump 2T - Potabilisation System

51 VICTORIAN DESALINATION PROJECT EQUIPMENT LIST - NOISE SOURCES 4 Stream - 2 GL/yr 3 Stream - GL/yr Area Internal / External Equipment Type Function / Equipment Name Total Duty for 2 GL/yr Standby for 2 GL/yr Total Duty for GL/yr Standby for GL/yr Power Input (kw unless otherwise stated) 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz Total Per Unit dba Total Per Type dba Source of Data Potabilisation internal Submersible Pump 2T Potabilisation Sump Pump < MDA estimate 2U - Administration Building Administration Building internal Transformer (LV) 2U Transformers - 3 kva ABB guaranted based MDA derived value Administration Building internal Transformer (LV) 2U Transformers - 25 kva ABB guaranted based MDA derived value Administration Building internal Transformer (LV) 2U Transformers - kva ABB guaranted based MDA derived value Chiller Plant Room external Ventilation 2U Chiller Plantroom Outlet Silencer Guntner chiller data Chiller Plant Room external Ventilation 2U Chiller Plantroom Inlet Silencer Guntner chiller data Chiller Plant Room external Ventilation 2U Chiller Discharge Silencer Guntner chiller data Chiller Plant Room external Ventilation 2U Chiller Intake Silencer Guntner chiller data Compressor Room external Ventilation 2U Compressor Room Discharge Silencer MDA estimate Compressor Room external Ventilation 2U Compressor Room Intake Silencer MDA estimate Administration Building external Ventilation 2U Heat Pump MDA estimate 2V - Fire Building Fire Building internal Diesel Pump 2V Fire Pump supplier IFT data Fire Building internal End Suction Pump 2V Fire Maintenance Pump supplier IFT data Fire Building external Exhaust 2V Fire Building Exhaust Outlet MDA spectral estimate & specification limit 75 1m Fire Building external Ventilation 2V Fire Building Inlet Silencer MDA spectral estimate & specification limit 75 1m Fire Building external Ventilation 2V Fire Building Outlet Silencer MDA spectral estimate & specification limit 75 1m 2W - Standby Power Generation Standy Power external Ventilation 2W Diesel Generator Exhaust MDA spectral estimate & specification limit 75 1m Standy Power external Transformer (LV) 2W Transformers - 2 kva ABB based MDA estimate Standy Power external Ventilation 2W Diesel Generator Intake Silencer MDA spectral estimate & specification limit 75 1m Standy Power external Ventilation 2W Diesel Generator Discharge Silencer MDA spectral estimate & specification limit 75 1m Standy Power external Transformer (LV) 2W Transformers - 63 kva ABB based MDA estimate Mechanical Services external Ventilation 2W Cooling Air Inlet Fan MDA estimate Mechanical Services external Ventilation 2W Cooling Air Outlet Fan MDA estimate Standy Power internal Diesel Generator 2W Diesel Generator supplier to adhere to maximum permissible sound pressure level 3A - Transfer Pump Station Transfer Pump Station internal Centrifugal Pump 3A Transfer Pump from Treated Water Storage to Transfer Pipeline Torishima IFP Data - Unenclosed Transfer Pump Station internal Centrifugal Pump 3A Cooling Fluid Circulation Pump for Transfer Pump Motor / VSD Cooling System MDA estimate Transfer Pump Station internal Centrifugal Pump 3A Potable Water Pumps < MDA estimate Transfer Pump Station internal Submersible Pump 3A Transfer Pump Station Building Drainage Collection MDA estimate Transfer Pump Station internal Overhead-Travelling Crane 3A Overhead Crane - Maintenance in Transfer Pump n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a low use and low noise level maintenance plant - day use only Transfer Pump Station external Pipes 3A External Pipe - Supply Branch MDA calculation derived from Perth VDP Transfer Pump Station external Pipes 3A External Pipe - Main Header MDA calculation derived from Perth VDP Transfer Pump Station external Transformer (LV) 3A Transformers - 1 kva ABB guarantee based MDA derived value Mechanical Services external Ventilation 3A Mech Vent Inlet Fans MDA attenuation design based on proposed fan selections Transfer Pump Station external Transformer (LV) 3A Transformers - VSD no input information at present - current indications - VSD transformers significantly less than distribution units 4D - Power Supply Tansformer Area external Transformer (HV) 4D Transformers MDA low frequency transformer spectra combined with upper value of supplier tender and guarantee Mechanical Services external Ventilation 4D Cooling Air Inlet Fan MDA estimate Mechanical Services external Ventilation 4D Cooling Air Outlet Fan MDA estimate

52 APPENDIX D BUILDING TREATMENTS

53 Building Building Title Current Nominated Construction Prediction Basis Construction Octave band sound reduction 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz 2A Screen and Feed Pump Station Att 2 Attenuators 9mm 4% OA IL Att 3 Acoustic Louvres 6mm deep (R) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 2 Metal deck roof / 25mm air gap / 5mm Easiboard (no FC sheet) Wall 1 Walls concrete C DMPF Backwash Att 5 Attenuator mm long 4% open area Door B Rw35 Personnel door (acoustic with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 2 Metal deck roof / 25mm air gap / 5mm Easiboard (no FC sheet) Wall 1 Walls concrete D Backwash Effluent Att 2 Attenuators 9mm 4% OA IL Door A Rw3 Personnel door (solid core with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 2 Metal deck roof / 25mm air gap / 5mm Easiboard (no FC sheet) Wall 1 Walls concrete E RO Building Att 2 Attenuators 9mm 4% OA IL Door A Rw3 Personnel door (solid core with seals) Door B Rw35 Personnel door (acoustic with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 1 Plywood roof / 35mm air gap / 5mm Easiboard with FC sheet Skylight Single 6.4mm laminated glazing Wall 1 Walls concrete (blank) G RO Chemical Building Att 4 Standard louvre Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Door A Rw3 Personnel door (solid core with seals) Roof 3 Metal deck roof / no air gap / roof thermal blanket insulation (Insul) Wall 1 Walls concrete J Lime Storage and Saturation Att 3 Acoustic Louvres 6mm deep (R) Door A Rw3 Personnel door (solid core with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 2 Metal deck roof / 25mm air gap / 5mm Easiboard (no FC sheet) Wall 1 Walls concrete K Sodium Hypochlorite/FSA Building Att 3 Acoustic Louvres 6mm deep (R) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 3 Metal deck roof / no air gap / roof thermal blanket insulation (Insul)

54 Building Building Title Current Nominated Construction Prediction Basis Construction Octave band sound reduction 63Hz 5Hz 25Hz 5Hz 1kHz 2kHz 4kHz Wall 1 Walls concrete N Sludge Treatment Att 3 Acoustic Louvres 6mm deep (R) Door A Rw3 Personnel door (solid core with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 5 Metal deck roof incorporating a mass layer board Wall 1 Walls concrete Q Utilities Building Door A Rw3 Personnel door (solid core with seals) Roof 3 Metal deck roof / no air gap / roof thermal blanket insulation (Insul) Wall 1 Walls concrete U Administration Building Wall 1 Walls concrete V Fire Building Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Door A Rw3 Personnel door (solid core with seals) Roof 3 Metal deck roof / no air gap / roof thermal blanket insulation (Insul) Wall 1 Walls concrete W Standby Power Generation Door B Rw35 Personnel door (acoustic with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 5 Metal deck roof incorporating a mass layer board Wall 1 Walls concrete A Transfer Pump Station Att 2 Attenuators 9mm 4% OA IL Door B Rw35 Personnel door (acoustic with seals) Door (e) Acoustically rated single roller door (MDA Mercure test values) 8 Roof 2 Metal deck roof / 25mm air gap / 5mm Easiboard (no FC sheet) Wall 1 Walls concrete

55 APPENDIX E ACOUSTIC SHIELDING OF DUNES

56 RO 7 TT 8 LE 4 AD 9 SEMI COAST BANKSIA WOODLAND ON EXISTING DUNE PLANTING 5 COAST BANKSIA WOODLAND ON GRADE PLANTING COAST BANKSIA WOODLAND ON CONSTRUCTED DUNE PLANTING PEDESTRIAN GRADE FEATURE PAVEMENT DAMP SANDS HERB RICH WOODLAND ON CONSTRUCTED DUNE PLANTING F1 2 F 4 CO NE W F1 3 F 4 3-A 2-M F 3 2-E F N STABILISATION POND F TRANSFER PUMP STATION ADMINISTRATION BUILDING U. -4 POTABILISATION SYSTEM / BALANCING TOWER 7 2-T A1 ORIGINAL SCALES CLIENT SLUDGE TREATMENT 3 2-N 3 9 FEATURE PLANTING - TYPE 3 F RE-ISSUED FOR APPROVAL AC HG F 1.1 ISSUED FOR APPROVAL AL HG SG ISSUED FOR STAGE 2 REVIEW AL WS KB D 1.1 ISSUED FOR STAGE 1 REVIEW AL WS KB VER DATE DRAWN CHECK APPVD BRACKISH GRASSY SEDGE.4m TO.6m ABOVE NWL BRACKISH SEDGE MARGIN.2m TO.4m ABOVE NWL 2.7m BLACK PVC COATED MESH FENCE WITH 3 STRANDS BARBED WIRE BRACKISH MARSHY MARGIN TO.2m ABOVE NWL B BOOM GATE H LOCKED GATE WITH BOLLARDS FOR EQUESTRIAN ACCESS E ENERGISED SECURITY GATE BRACKISH SUBMERGED MARSH -.4m TO -1.m BELOW NWL 2mm BUND WITH WATER LEVEL CONTROL GATES, TOP OF BUND TO RL 2m F1 F WAYFINDING AND INTERPRETIVE SIGNAGE LEGEND: ENTRY 1 WIND FARM FEATURE GRAVEL BEDS 2 COAL MINING 3 WETLAND 4 FOREDUNE 5 DESALINATION PROCESS OVERVIEW 6 COASTAL PARK OVERVIEW & TRAIL ORIENTATION DUNE COPSES INTERDUNAL WOODLAND REST AREA WITH PICNIC SHELTER AND PUBLIC TOILET STORMWATER TREATMENT WETLAND WATER STORAGE POND (IRRIGATION REUSE) CAPTURED ROOF RUN OFF VISITOR CARPARK WITH WATER SENSITIVE URBAN DESIGN BIO RETENTION SWALES FULL SIZE A1 HALF REDUCTION A3 SCALE (m) SIGNED DATE RPEQ No. EMERGENCY ACCESS ROAD / EQUESTRIAN AND SHARED TRAIL WATER QUALITY IMPROVEMENT WETLAND / HABITAT FOR MIGRATORY BIRDS AND AQUATIC FAUNA BIRD HIDE SECURITY ENTRY VALLEY APPROACH CONSTRUCTED DUNES COASTAL DUNE RESTORATION ZONE EXISTING VEGETATION TO BE PROTECTED AND RETAINED TREATED WATER STORAGE ACOUSTIC / VISUAL CONSTRUCTED DUNES EMERGENCY ACCESS TO PLANT AREA EMERGENCY ACCESS ROAD / EQUESTRIAN AND SHARED TRAIL WATER QUALITY IMPROVEMENT WETLAND / HABITAT FOR MIGRATORY BIRDS AND AQUATIC FAUNA PROJECT F 2 21 PRELIMINARY ISSUE WETLAND VIEWING DECK PLANT VIEWING DECK OPTIONAL SHARED PATHWAY CONNECTION TO GRAHAM STREET NOT FOR CONSTRUCTION VICTORIAN DESALINATION PROJECT DESALINATION PLANT DP2-21 SITE WIDE LANDSCAPE & ECOLOGICAL WORKS ENLARGEMENT PLAN - SHEET A APPROVED FOR AND ON BEHALF OF THE THIESS / DEGREMONT JV SG E DESCRIPTION 25 BRACKISH ESTUARINE SCRUB HARDWOOD TIMBER OR COMPRESSED PLASTIC) DO NOT SCALE THIS DRAWING - USE FIGURED DIMENSIONS ONLY VERIFY ALL DIMENSIONS ON SITE PLANTED SWALE LANDSCAPE FEATURES LEGEND: TREATMENT WATER STORAGE 3 F FEATURE PLANTING - TYPE 2 PICNIC SHELTER PUBLIC TOILET BIRD HIDE F FLUOROSILIC BUILDING -2 2-L 3-A WILLIAMSONS BEACH G M UTILITIES BUILDING CHLORINE BUILDING LIME STORAGE AND SATURATION J 2-Q FEATURE PLANTING - TYPE 1 8mm X 1mm RECYCLED PLASTIC EDGING WITH PLASTIC STAKES AT 1.5m CRS S P P K CARBON DIOXIDE BUILDING 2-H 3 RO CHEMICAL BUILDING RO BUILDING -4 2-E 2-G P P F F1 F ENGINEERED RETAINING WALL (UPTO MAX. 8.5m HIGH) BACKWASH EFFLUENT -2 2-D DMPF BACKWASH 21-1 PRETREATMENT DMPF 2-C SCREEN AND FEED PUMP STATION 2-B 8 SEAWATER LIFT PUMP STATION / BRINE DISCHARGE 2-A UP UP B 6 9 ARCHITECTURAL ELEMENTS LEGEND: -3 K PAR 5 S AQUATIC (WETLAND) PLANTING BRACKISH DEEP MARSH -.2m TO -.4m BELOW NWL BU 5 K SWAMP SCRUB (BRACKISH) PLANTING VERSIWEB CELLULAR CONFINEMENT RETAINING STRUCTURE BRACKISH SHALLOW MARSH TO -.2m BELOW NWL PAR S FEATURE WALL CLADDING COLOURED PRE CAST CONCRETE FIRE BREAK TO BE DETERMINED IN DISCUSSION WITH DSE, CFA, & PARKS VICTORIA SECURITY GATE 2 7 BU SWAMP SCRUB (FRESH) PLANTING FEATURE ENTRY FENCE AND GATE U mm GRAVEL STERILE ZONE F1 3 4 RK F1 F F1 PA 21 ROOF PUMP K MAIN UC TR 21 9 LIVING IRRIGATION GREEN LINE PLANTING ENERGISED SECURITY FENCE F C 2-D 2-B 2-C 2-D 2-B 2-C 2-D 2-B 2-A Q mm CRUSHED BASALT FEATURE MULCH VIEWING DECK (AUST. PLANTATION HARDWOOD TIMBER OR COMPRESSED PLASTIC) BOARDWALK (AUST. PLANTATION HARDWOOD TIMBER OR COMPRESSED PLASTIC) SWALE CROSSING (AUST. PLANTATION 5 1 F M F1 3 F T F1 4 2-J F1 3 2H 2-K 2-L 4 F 3.R OA D 3 F1 LIVING ROOF PLANTING mm SCORIA FEATURE MULCH 3 DAMP HEATHLAND PLANTING mm CRUSHED GRANITE FEATURE MULCH 3 3 DAMP SANDS HERB RICH WOODLAND ON GRADE PLANTING PEDESTRIAN GRANITIC GRAVEL PAVEMENT WITH PLASTIC EDGING (1.5m WIDE) F1 DAMP SANDS HERB RICH WOODLAND BATTER PLANTING WALKING TRACKS GRANITIC GRAVEL WITH NO EDGING (1.5m WIDE) 1 PEDESTRIAN GRADE EXPOSED AGGREGATE COLOURED INSITU CONCRETE PAVEMENT (1.8m WIDE) 1 FEATURE TREE PLANTING ALLOCASUARINA VERTICILATA BANKSIA INTEGRIFOLIA EUCALYPTUS VIMINALIS EUCALYPTUS PAUCIFLORA EUCALYPTUS OVATA MELALEUCA ERICIFOLIA 6 F OVA VEHICULAR GRADE CRUSH ROCK / SPRAY SEAL PAVEMENT WITH NO EDGING (7m WIDE) 7 SEMI VEHICULAR GRADE CONCRETE HARDSTAND 1 PAU EUC VEHICULAR GRADE BITUMEN PAVEMENT WITH GRASSED SWALE (7m WIDE) 6 F 1 9 SEMI ERI MEL TUBE SEMI VIM EUC VER INT BAN SEMI EUC EXSITING VEHICULAR ROAD F1 ALL EXISTING WALKING TRAIL 3 1 EXISTING POST & WIRE FENCE RETAINED (TITLE BOUNDARY) EXISTING VEGETATION REMOVED EXISTING STRUCTURE REMOVED 5 6 W EXISTING VEGETATION RETAINED EXISTING STRUCTURE 4 PO 9 OF H SOFT WORKS HARD WORKS UT MO N LANDSCAPE & ECOLOGICAL WORKS LEGEND: LANDSCAPE & ECOLOGICAL WORKS LEGEND: TRUE NORTH TYPE ORIG. DISC. AREA DG ASP LA 2 SUB-AREA ZONING No X DRG. NO. REV. VERSION 1 F 1

57 APPENDIX F OPERATIONAL TRAFFIC CIRCULATION PLAN FOR THE PLANT INTERNAL ROAD NETWORK

58 SK-PBB-CI-2-X--1 ROAD C ROAD F ROAD H ROAD D ROAD J ROAD B ROAD K ROAD C ROAD E ROAD L ROAD A 1mm AT FULL SIZE ROAD G ROAD A ROAD C HOLD 2.1 ISSUED FOR CONSTRUCTION BS NAS JAW VER DATE DESCRIPTION DRAWN CHECK APPVD SCALES Full Size 1:1 ; Half Reduction 1:2 SCALE (mm) A1 ORIGINAL DO NOT SCALE THIS DRAWING - USE FIGURED DIMENSIONS ONLY VERIFY ALL DIMENSIONS ON SITE APPROVED FOR AND ON BEHALF OF THE THIESS / DEGREMONT JV SIGNED DATE RPEQ No. CLIENT PROJECT TYPE VICTORIAN DESALINATION PROJECT DESALINATION PLANT SITE WIDE AREA 2 TRAFFIC MANAGEMENT STRATEGY INTERNAL ROAD CIRCULATION AND ACCESS TO BUILDING ORIG. DISC. AREA SUB-AREA ZONING No DRG. NO. REV. VERSION SK PBB CI 2 X 1

59 APPENDIX G SAMPLE CALCULATIONS This Appendix provides sample calculations for the attenuation factors incorporated in the site acoustic model. These attenuation factors have been calculated with the SoundPLAN mapping software using the ISO 96 methodology described previously in this report. Table G1 2C Backwash (3 rd Stream) calculated noise transmission from inside the building to receiver R5 via the roof structure Description Octave band mid frequency k 2k 4k Hz Total internal sound power level db Internal sound pressure level db Internal diffusivity db Roof transmission loss db Area adjustment (1m 2 ) db Barrier db Spherical spreading db Ground db Atmosphere db Predicted sound pressure level at R db Table G2 2E RO Building calculated noise transmission from inside the building to receiver R5 via part of the roof structure (composite summary) Description Octave band mid frequency k 2k 4k Hz Total internal sound power level db Internal sound pressure level db Internal diffusivity db Roof transmission loss db Area adjustment (8966m 2 ) db Barrier db Spherical spreading db Ground db Atmosphere db Predicted sound pressure level at R db

60 Table G3 2B DMPF calculated noise propagation from the non-return air valve to receiver R5 Description Octave band mid frequency k 2k 4k Hz Sound power level db Barrier db Spherical spreading db Ground db Atmosphere db Predicted sound pressure level at R db Note: As the RO roof is very large it is actually broken by the modelling program into several () separate elements. Table G2 details the information related to the largest single element and provides the result for R5. See the relevant distances in Figure G1 below. Figure G1 Distances from main Roof element to R5 and R (refer Table G2)

61 APPENDIX H SUPPLEMENTARY MODEL INFORMATION AND DRAWINGS

62 APPENDIX H1 RECEIVER CALCULATION HEIGHTS (NEAREST RECEPTORS) Heights (m) Receiver Ground Relative Height Calculation Height Calculation Point Relative Height R5 north west of VDP R south east of VDP.5 1.5

63 APPENDIX H2 BUILDING AND SOURCE APPROXIMATE CALCULATION HEIGHTS Building / Area Building Floor or Ground Relative Height Approximate Heights (m) Building or Source Height Building or Source Relative Height 2A - Screen and Feed Pump Station 9 1 2B - Pre-treatment DMPF C - DMPF Backwash D - Backwash Effluent E - RO Building G - RO Chemical Building 9 1 2J - Lime Storage and Saturation K - Sodium Hypochlorite/FSA Building N - Sludge Treatment 9 2 2P - Stabilisation Ponds Q - Utilities Building T - Potabilisation System / Balancing Tower U - Administration Building 6 2 2V - Fire Building W - Standby Power Generation A - Transfer Pump Station 9 8 4D - Power supply 7 4

64 design advice APPENDIX H3 - NOISE MODEL PLAN VIEW & ANNOTATED APPROXIMATE BERM HEIGHTS

65 design advice APPENDIX H4 NOISE MODEL SAMPLE ISOMETRIC VIEW FROM TRUE WEST (SITE NORTH WEST) CALCULATION POINT R5 INDICATED AT LOWER LEFT R5

66 design advice APPENDIX H5 - AREA 2A SCREEN & FEED SAMPLE DRAWINGS

67 design advice APPENDIX H6 - AREA 2C DMPF SAMPLE DRAWINGS SECTION VIEWING LOOKING TOWARDS SITE EAST (TRUE SOUTH EAST)

68 design advice APPENDIX H7 - AREA 2D DMPF BACKWASH EFFLUENT SECTION VIEWING LOOKING TOWARDS SITE WEST (TRUE NORTH WEST)

69 design advice APPENDIX H8- AREA 2E RO BUILDING WEST AND SOUTH ELEVATIONS (TRUE NORTH WEST AND SOUTH EAST RESPECTIVELY)