Panel of Inquiry into the Environmental Effects Statement For Mornington Safe harbour Statement of Expert Evidence of Peter Riedel of Coastal Engineering Solutions Pty Ltd

CONTENTS

1 INTRODUCTION

2 QUALIFICATIONS AND EXPERIENCE

3 SUMMARY OF OPINIONS

4 RESPONSE TO SUBMISSIONS

Appendix A: Matters Raised by Planning Panels – Directions & Expert Evidence Appendix B: Curriculum Vitae: Peter Riedel

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1 INTRODUCTION Coastal Engineering Solutions Pty Ltd (CES) undertook a review of the EES documentation, in relation to coastal processes and engineering, for Mornington Peninsula Shire Council (MPSC) in August 2009. I adopt this witness statement, which includes a summary of the above advice, as my evidence to the Panel insofar as they relate to my areas of expertise.

2 QUALIFICATIONS AND EXPERIENCE Appendix A contains a statement setting out my qualifications and experience, and the other matters raised by Planning Panels Victoria – Directions & Expert Evidence.

3 SUMMARY OF OPINIONS

3.1 Summary of Advice to MPSC, August 2009 1 The various EES study reports, for Mornington Boat Haven, relating to coastal processes have been capably prepared and carried out in accordance with the relevant scope of studies for each of the reports. 2 The only areas of concern in relation to the full development are: a. The degree of change likely to occur at Mother’s Beach, though it is agreed that any change will occur slowly and can be detected and managed through appropriate monitoring. b. The potential for siltation on the seaward side of the beaches in the lee of the wave screen in a similar manner as has occurred at St Kilda and Brighton. 3 It is expected that without sand management Mother’s Beach will accumulate sand at the expense of Scouts Beach and Mothers Beach will rotate in a clockwise direction and become wider as a result of the full development.

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3.2 Coastal Processes 3.2.1 Sea Level Rise and Storm Tides and Wave Climate Related Issues Proponents for the development of projects within 1 kilometre of the shoreline where the land levels are less than 5 metres (AHD – Australian Height Datum, which approximates mean sea level) have since the release of the Victorian Coastal Strategy 2008 been required to undertake a Coastal Hazard Vulnerability Assessment (CHVA). This requirement was not in place when the terms of reference for the EES were set. Overview The Victorian Coastal Strategy 2008 includes a policy to plan for a rise above present-day sea levels of not less than 0.8m by the year 2100. In conjunction with the 0.8m sea level rise, there are other climate change influences that also need to be addressed, primarily as a consequence of increased “storminess” and the associated increase in storm tide levels along Victoria’s shoreline. These various factors have been addressed by the comprehensive CSIRO report “The Effect of Climate Change on Extreme Sea Levels in Bay” (McInnes et al, 2009). Consequently when undertaking a CHVA, parameters associated with future sea level rise and associated increased storminess are generally adopted from the CSIRO report. Sea Level Rise When considering future climate change, this CHVA utilises the following sea level rise: • 0.47 metres for a planning horizon to 2070 (from the CSIRO report). This timeframe approximates the planning life of a typical residential structure that will be constructed within the next 10 years.

• 0.8 metres for a planning horizon to 2100 (as nominated in the Victorian Coastal Strategy).

Storm Tide and Surge Figure 1 illustrates the primary water level components of a storm tide event. Any increase in ocean water levels as a consequence of future climate change would be in addition to these various natural phenomena. A brief discussion of these components is offered below.

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COASTLINE BROKEN WAVES WAVES ARE BREAKING INCOMING WAVES

WAVE RUNUP

WAVE SETUP

STORM SURGE TIDE ASTRONOMICAL TIDE

LOW WATER DATUM

Storm Tide = Astronomical Tide + Storm Surge + Breaking Wave Setup

Figure 1 : Components of a Storm Tide Event • Astronomical Tide: The astronomical tide is the normal day-to-day rising and falling of ocean waters in response to the gravitational influences of the sun and the moon. The astronomical tide can be predicted with considerable accuracy. Astronomical tide is an important component of the overall storm tide because if the peak of a severe storm were to coincide with a high spring tide for instance, severe flooding of low lying coastal areas can occur and the upper sections of coastal structures can be subjected to severe wave action.

• Storm Surge : This increase in ocean water levels is caused by meteorological effects during severe storms. Strong winds blowing over the surface of the ocean forces water against the coast at a greater rate that it can flow back to sea. Furthermore sea levels can rise locally when a low pressure system occurs over the sea - resulting in what is termed an “inverted barometer” effect. A 10mb drop in atmospheric pressure results in an approximate 10 cm rise in sea level. In order to predict the height of storm surges, these various influences and their complex interaction are typically replicated by numerical modelling techniques using computers - such as has been done for the CSIRO study throughout Port Phillip Bay (McInnes et al, 2009).

• Breaking Wave Setup: As storm waves propagate into shallower coastal waters, they begin to shoal and will break as they encounter the nearshore region. The dissipation of wave energy during the wave breaking process induces a localised increase in the ocean water level shoreward of the breaking point which is called breaking wave setup. Through the continued action of many breaking waves, the setup experienced on a foreshore during a severe wave event can be sustained for a significant timeframe and needs to be considered as an important component of the overall storm tide on a foreshore.

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• Wave Runup: Wave runup is the vertical height above the local water level up to which incoming waves will rush when they encounter the land/sea interface. The level to which waves will run up a structure or natural foreshore depends significantly on the nature, slope and extent of the land boundary, as well as the characteristics of the incident waves. When assessing existing coastal stability and vulnerability for a CHVA, the 100 year return period event for storm tide is usually adopted. The prediction reported by CSIRO (McInnes et al, 2009) for Mornington is +1.14m (AHD). Future climate change scenarios for the years of 2070 and 2100 indicate there will be increases in the magnitude of storm surges. The CSIRO report determines the combined effects of future sea level rise and storm tide for a 100 year return period as “Scenario 2”. These are summarised below in Table 1. Current Location 2070 2100 Climate Mornington +1.14 +1.82 +2.28

Table 1 : Sea Level Scenarios

Storm (wave) Parameters

The CSIRO study of future climate change effects throughout Port Phillip bay (McInnes et al, 2009) predicts a 13% increase in the strength of winds during storms by the year 2070. This is expected to produce a similar percentage increase in the storm wave heights approaching Mornington harbour. For the year 2100 scenario winds are predicted to increase by 19% again resulting in a similar percentage increase in wave heights.

Facility Design Parameters

The most appropriate engineering design approach to handle the impacts of sea level rise is to design the facility for present day sea level or possibly a sea level rise up to a design horizon of 50 years, but to ensure that the design elements can be practically upgraded for more distant sea level rise and storminess scenarios. Incorporation of this design approach in the detail design of the facilities at Mornington Safe Harbour would not be onerous.

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Impact on Coastal Processes (sand movement)

The sand movement studies for the EES and by CES for MPSC (in their review of EES documentation) show that rates of sand movement are low now and will generally be slower after the development is complete because of the wave shadow created by the wave screen walls. Higher water levels and larger storm waves in Port Phillip will result in some increase in the rate of sand movement, but the absolute magnitude would still be slow and by 2100 it is unlikely that sand movement rates would more than double. That is, sand management could still be practically implemented to maintain the required beach amenity.

It is acknowledged that sand movement calculation is not a precise science. However, coastal engineers are usually comfortable that their calculations are within a factor of 2 of the real situation. This confidence comes from their application of the same calculation techniques at other locations where sand movement rates have been measured and it has been possible to verify their calculation procedure. As per the question relating to increased storminess due to sea level rise, a further increase in sediment transport rates by a factor of 2 would still be quite manageable in the Mornington harbour area because of the protection that will be provided by the proposed wave screens.

3.2.2 Sand Management

The volume of sand that needs to be managed annually can be counted in terms of 10’s or 100’s of cubic metres. For such small scale sand movement the usual method is to move the sand by truck along the beach. The process usually involves a loader or excavator removing sand from the area of beach where it has been accumulated and placing it in the truck. The truck will typically have a capacity of 10 cubic metres per trip. The truck then travels along the beach to the location where the sand has to be placed and dumps it on the beach. A bull- dozer then smooths the sand out to create a beach profile that is similar to the natural existing beach profile.

A potential complication for the Mornington harbour beaches is that each of the beaches – Shire hall, Scouts and Mothers Beach are composed of progressively finer sand. This has resulted as a part of the natural sorting process that occurs on beaches subjected to a range of wave climates. The sand on beaches exposed to the most severe wave climate will tend to have undergone a sorting process whereby finer sand is either moved offshore or along the shore until it reaches a more tranquil area. Mothers Beach is the most protected beach by the existing harbour and therefore is composed of the finest sand in the area.

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Any sand management program needs to be able to manage each beach independently. That is, sand movement at Mothers Beach should recycle sand from the western end of Mothers Beach to its eastern end. Scout Beach and Shire hall Beach are more inter- connected so it is unlikely to be practical to separate the bodies of sand moving on each beach. Consequently any sand re-cycling is likely to be over the full length of the beach. Recycled sand that is finer than the natural sand at Shire Beach and is placed on Shire Beach can be expected to move more rapidly than the natural coarser sand.

It is important that the sand is not removed from the beach system. Removal of sand would eventually result in beach erosion in the Mornington Harbour precinct.

The scale of sand management required of 10’s to 100’s of cubic metres means that the duration required to undertake the work should be in the range of 1 to 5 days per year. The sand management work can then readily be scheduled to cause minimal interference to beach users.

3.3 Design Issues The design issues raised in the Directions document of August generally fall outside my area of expertise or technical jurisdiction. I can only offer some common sense input. A system of marker buoys can be used for separating beach users and swimmers from the boating traffic. If the buoys are set at a water depth of 2 metres, that is, along the 2 metre depth contour, to low water datum, there is sufficient space for boats entering and leaving the harbour whilst still maintain a reasonable area for swimming in water depths of 1 ½ to 2 ½ metres parallel to the shore. The question of separation of boating activities from swimming activities, appropriate signage (buoys) and minimal useful swimming areas really needs to be addressed by some authority such as Marine Safety Victoria. The issue of safety in relation to wave overtopping of the wave screen should be able to be managed by applying a similar management approach to that used at other harbours with vertical wave screen, such as Sandringham.

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3.4 Water Quality Issues Issues with which I have relevant technical knowledge are presented below. 3.4.1 Dredging Around Travel Lift/Slipway Dredging The EES gives an approximate quantity of material to be removed as being 1,500m3. Testing of seabed samples to a depth of one metre showed that one out of nine samples was contaminated. It was also stated that the material is sandy. The area where removal of material from the seabed is required is within the most sheltered region of Mornington Harbour, particularly if the removal occurs after wave screens have been built. Consequently it would be practical to install a silt screen around the area being dredged for the duration of the dredging and thereby contain any silt plume or contaminants that may be generated to within the area of dredging. The dredge material may all need to be removed to a suitable disposal area (a) because of contamination and/or (b) because the “sand” is too fine to be placed back on the beaches. If the dredge material is clean sand of a similar size to that on any beach, then it could be placed in a bunded area at the back of the beach and when it has drained could be spread over the beach to the natural beach grade. Subsequent Siltation Long-term siltation of the area dredged around the travel lift is expected to be low. The components are:

• An initial stabilisation of the form of the dredged slot. When dredging occurs the batters at the edge of the dredged slot will not necessarily be dredged to a long-term stable slope. The method of accounting for this is to (a) estimate the expected stable slopes for the material being dredged; (b) dredge a volume of material that allows the stable slope to form after dredging is complete so that the desired full operational depth is maintained over the travel lift area.

• Sand moving into the dredged area from Mother’s Beach. The volume of sand moved westward off mother’s Beach has been estimated to be small, of the order of 10 cubic metres per year. Consequently, siltation from this source is low.

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• Silt dropping out of the water into the dredged area because any current within the harbour will reduce in strength when it crosses an area of deep water. Suspended sediment quantities are relatively low in Mornington Harbour according to the EES. The main sources of suspended sediment are:

o Prop wash from boats in shallow water; o Storm water discharge in the vicinity of Mornington harbour; and o Wave activity outside the harbour stirring up seabed sediments and these sediments then being transported into the harbour area by tide or wind driven currents. Some estimate of the extent of siltation could be made using hydrodynamic modelling supported by suspended sediment data gathered over a range of environmental conditions. 3.4.2 Residence Times Two dimensional hydrodynamic modelling was undertaken for the EES to estimate residence times. It was stated that the residence times were acceptable. The models used have international recognition. However, it is expected that the two dimensional modelling may yield a conservative result. For two dimensional modelling the water movement is modelled so that the current speed and direction is uniform throughout the water column. In reality there will be a three dimensional nature to the water movement. For example when a wind generate current is generated and the current is pushed into a dead-end body of water, there will tend to be a surface flow of water in the wind direction and a return flow at the seabed in the opposite direction. In most instances three-dimensional modelling will predict more water exchange and therefore reduced residence times compared to two dimensional modelling.

3.4.3 Construction Methodology and the Proposed Management of Turbidity and Sediment It is understood that the seabed sediments over the area where piling occurs and the wavescreens will be constructed are sandy. This means that no excavation will be needed, other than for the travel lift as discussed previously. Turbidity and sediment disturbed in the construction process will tend to settle out again quickly on the seabed because of its sandy nature. Extensive turbidity plumes and sand movement is not expected.

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Further, when sea conditions are rough and wind generated currents are high, it is likely that there would be a halt to construction activities, particularly if they utilise floating plant. This means that when the natural mechanism occurs that may keep sediment in suspension, such as in a northerly storm, it is unlikely that construction activities will continue.

3.4.4 Beach Cleaning I do not have any knowledge of current practices for these Mornington beaches. Beach cleaning relates to the removal of debris and rubbish from the surface of the beach. Provided the new harbour is adequately managed in terms of rubbish disposal, there should be no increased need for beach cleaning than presently occurs.

3.5 Recommendations for Inclusion in the Permit Conditions The following are suggestions for consideration: 1) Investigate substrate at Mothers beach to determine if there are pre-existing organic and/or anaerobic conditions. 2) Undertake a specific investigation to address the issue of wave reflections affecting entry to the harbour and if necessary (and possible) modify the wave screen shape to improve conditions. 3) Beach monitoring in terms of (a) surveyed beach profiles and (b) sand grain size at selected locations to determine how beach response compares with that determined in the EES. This data will then provide information in terms of trigger points for sand management. The trigger point may need to be considered in terms of (i) beach rotation and/or (ii) the volume change of sand in a beach compartment and/or (iii) the distribution of the sand within each of the beach compartments – Mother’s Beach, Scout Beach and Shire Hall Beach. 4) Unambiguous buoyage markers be included in the design and construction to delineate the eastern access channel to the harbour from the beaches.

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4 RESPONSE TO SUBMISSION 234

4.1 Degradation of Mornington Beaches The review of the EES documentation by CES for MPSC raised the issue of fine sand collection on the shore in the lee of the wave screen. The quality of the sand collected was not addressed and it is difficult to do so. The submission shows two examples at Sandringham and Brighton where there is decaying organic matter and it is anaerobic. I would not be certain that this material results from the construction of wave screens alone. For example, the Sandringham wave screen has only been in place for a few years and my memory from visits to the area before the wave screen was constructed was that there was decaying seagrass on the beach shown in the submission. I have been involved in studies for the re-nourishment of Middle Park Beach where the sand source was the accumulated sand cusp in the lee of its breakwater. The issue of organic material and anaerobic conditions were not present. I have not dug a hole in the beach at Mother’s Beach and also do not have a knowledge of the extent of seagrass wrack that deposits there. The other factor that can contribute to anaerobic conditions is the pooling of storm water with its associated contaminants on the beach. My expectation is that the Mornington Beaches will not have the organic and anaerobic issues if the source materials are not present in significant quantities. If they are present I would expect that if a hole were dug in the beach at Mother’s Beach, then organic and anaerobic materials would be exposed.

4.2 Safe Navigation into Harbour During Storms Entering any “safe harbour” during storms can be a difficult process. It is my understanding that the main intent for providing safe harbours is to create an environment where vessels may safely moor during a storm and that most of the vessels will have entered the harbour before the brunt of the storm hits.

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The reflection issue raised is real and waves immediately north of the wave screen may almost double in height. A similar scenario would occur at Sandringham Harbour which also has a vertical wave screen as can be seen in the following image.

Sandringham harbour with wave screen The main differences at Sandringham are (a) the wave conditions will generally not be as severe because of its more northerly location within Port Phillip and (b) the wave screen is curved which results in some spreading (diffusion) of the reflected wave energy. It would appear that the issue of safe entry into Mornington Safe Harbour can be managed by a combination of:

• Discussions with the operators of Sandringham Harbour to learn of their experience and advice

• There being a wide area of deep water between the wavescreen and the shoreline which provides for a wide navigation area for boats entering the harbour via this

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entrance. A wider navigation width allows for more flexibility in the direction of entry in relation to the waves at the entry point.

• Most severe storms occur from the north to north-west. This means that waves will be reflected away from the western entrance to the harbour in terms of both the wave screen on the pier and the new free-standing wave screen. Therefore conditions at this harbour entrance should be minimally changed from present day conditions where there are no wave screens near the harbour entrance.

• The free-standing wave screen plan form could be modified so as change the direction of reflected waves and thereby reduce the wave height at desired locations.

• Improved warning systems for boats at sea re impending bad weather so that they may reach their safe harbour before the storm strikes.

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Appendix A Matters Raised by Planning Panels Victoria – Directions & Expert Evidence a) The name and address of the Expert Hans Peter Riedel 600 Burwood Road Hawthorn East Victoria 3123 Australia b) The Expert’s Qualifications and Experience Please refer to the Curriculum Vitae attached in Appendix B. A summary of my qualifications and experience are:

• Bachelor of Engineering (Mechanical), University of , 1967

• Master of Engineering Science (Mechanical), Monash University, 1969 • Doctor of Philosophy, (Civil Coastal Engineering), Queen's University, Kingston, Canada, 1972.

My experience is summarised as follows: I embarked on a career in coastal engineering when I started my Master of Engineering Science at Monash University where the subject of my degree was “Wave Motions in a Stratified Liquid”. The studies involved physical and mathematical modelling. I then obtained a Commonwealth Scholarship to study coastal engineering in Canada. My PhD dissertation was titled “Direct Measurement of Bed Shear Stress Under Waves”. Bed shear stress is the physical factor that moves sand on the seabed and is the basis of sand movement in the study of coastal processes. From 1972 to 1973 I worked for the Maritime Services Board of NSW collecting field data in Botany Bay relating to waves (instrumentation) and coastal processes (survey of beach profiles).

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From 1973 to 1979 I worked for the Maritime Works Branch of the Dept. of Works (later Dept. of Housing and Construction). This work took me all around Australia mainly working on coastal engineering and coastal process studies relating to the development of new or upgraded naval facilities in Cockburn Sound, WA; Cairns and Brisbane, Qld; Portsea and , Vic. In my specialised role I attended international coastal engineering conferences in New Orleans and Hawaii whilst in this employment. Since July 1979 I have been a consulting engineer specialising in coastal engineering. I started the first Australian coastal and maritime engineering consultancy with Gerry Byrne in 1979 “Riedel and Byrne Consulting Engineers Pty Ltd”. My role focussed on technical input to the consultancy projects and the main areas of expertise that I developed further were mathematical and physical modelling of waves, coastal processes and structures built in the coastal environment. The company remained specialised in these fields until the end of 1990 when, with a staff of about 50, it was acquired by Kinhill Engineers. I remained with Kinhill until 1993 when I left and started “Coastal Engineering Solutions Pty Ltd” This company has remained small with staff levels of 2 to 6 and is now (2010) a two person operation specialising in coastal engineering and coastal processes. I undertake the full project from writing the proposal to undertaking the technical work, including mathematical and physical modelling, where required. As a result of my specialisation, I undertake work around Australia and recently worked in Canada for 4 months on a physical modelling project. I have published technical papers relating to coastal processes extensively over a 30 year period – See Appendix B for listing. In recent years I have presented sessional (Swinburne and RMIT) and also full semester courses (Melbourne University) on coastal engineering with the focus being coastal processes

c) A Statement Identifying the Expert’s Area of Expertise Please refer to the Curriculum Vitae attached in Appendix B. A summary of my expertise that is relevant to my role in this project and to this Statement of Expert Evidence is:

• Setting up and the implementation of wave and coastal process models to identify wave climates and sediment movement at nearby coastal precincts on the eastern shore of Port Phillip –Frankston to Mt Martha Coastal Processes and Strategic Coastal Plan in 1996; Aspendale Beach Re-nourishment in 1996; Mt Martha Beach Coastal Erosion & Remediation– 2001 to 2007; Mentone Beach Re-nourishment in 2002.

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• My overall knowledge in relation to waves and coastal processes in Port Phillip Bay having prepared the document “Beach Nourishment Preliminary Designs: Vol 1 – Altona Beach; Vol 2 – Mentone Beach; Vol 3 – New St & Elwood Beaches and ; Vol 4 – Beaches” for Dept of Natural Resources and Environment in 2002.

d) Instructions That Define the Scope of the Reports

The instructions provided by Maddocks, Lawyers are:

• Comply with Planning Panels Victoria’s guidelines for expert witness statements, as previously circulated

• Address the adequacy of the assessment of coastal engineering issues in the EES documents;

• Expressly address:

o Issues raised by Russell Coleman as forwarded to you previously, as relevant to sedimentation, siltation and sand drift; and

o Any recommendations or requirements for inclusion in the permit conditions or a revised Framework Environmental Management Plan (FEMP) exhibited with the EES (noting that the proponent is required to submit a revised FEMP during the course of the hearings).

In particular, it would be helpful if you could include detailed recommendations regarding any required sand management plan. We expect that the proponent will produce a proposal during the course of the hearing.”

Mornington Safe harbour Directions Hearing of 19th August from Planning Panels Victoria requested the following be addressed in terms of coastal processes (p3 of directions): “Coastal Processes ٛ .d. The response of the project to sea level rise in relation to current government policy (in the VCS and SPPF) and particularly the use of interim sea level rise figures based on design life; ٛ .e. The design parameters around measured sea level, predicted sea level and the interaction with storm surges and the local and regional wind environment;

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ٛ .f. The impact of climate change (sea level rise and more frequent/intense storm surge activity) on coastal processes in the area and its impact on local beaches; ٛ .g. The design or other differences between the 1991 EES and the current proposal that address the concerns in Minister McClellan’s EES assessment of 1994; ٛ .h. The management of sand on the beaches behind the harbour and confidence around sand movement calculations; ”.ٛ .i. Proposals for sand removal and how this might be carried out

The Mornington Safe harbour Directions Hearing of 19th August from Planning Panels Victoria also refers to Design and Water Quality Issues. I have addressed some of these issues in the attached Appendix C and am able to address some of the other issues raised. For completeness the issues raised at the directions hearing in relation to design and water quality follow: “Design ;ٛ .j. The integration of this project with Parks Victoria proposals for the pier ٛ .k. The status of the offshore reef proposed in terms of project approval ?ٛ .– is this part of the project being considered for approval now ٛ .l. The relationship (in boating needs terms) of this project with the proposed Oliver Hill Safe Harbour and the Martha Cove Marina; ٛ .m. The design response in terms of catering for different users of the area such as swimmers and increased boat traffic; ٛ .n. Safety aspects related to walkways and overtopping of wave screens ?ٛ .– how will pedestrian access be managed at this time ;ٛ .o. Traffic and parking design and how it might be managed in peak periods

Water Quality ٛ .p. Issues of potential contamination related to dredging around the travel lift/slipway and how this will be managed, including the quantities of material to be removed;

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;ٛ .q. Consideration of increased boat traffic and potential for pollutants relative to current operations ;ٛ .r. The basis for the predicted residence times for the harbour ;ٛ .s. Construction methodology and the proposed management of turbidity and sediment ٛ .t. The management of the proposed underground fuel storage tank in relation to groundwater conditions; ٛ .u. Whether beach cleaning is currently carried out on harbour beaches and whether it will need to be in future.” . ٛ

Mornington Safe harbour Further Directions (19th November) from Planning Panels Victoria advises under section 16(a): “Submission 234 raises the issue of sediment quality changing from a sandy environment to a muddy environment due to reduced wave energy. Experts in this field should include discussion of this issue in their evidence.”

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Appendix B: Curriculum Vitae

CURRICULUM VITAE

NAME: Peter Riedel: B.Eng(Melb-1967); MSc(Monash-1972); PhD(Queens-1972) Coastal Engineer PROFESSION: YEARS WITH FIRM: seventeen (17) years NATIONALITY: Australian POSITION IN FIRM: Director

Dr. Riedel was a founding director of Riedel and Byrne Consulting Engineers Pty Ltd, which in January 1991 became part of the Kinhill Group. In October 1993 he formed Coastal Engineering Solutions Pty Ltd in order to pursue an independent specialist coastal engineering career.

Dr. Riedel has extensive experience in the field of Coastal Engineering and is a recognised international authority on wave transformation and analysis. He was responsible for the development of a suite of coastal software packages used exclusively by Kinhill Riedel & Byrne. In addition, he was responsible for the calculations of sediment transport, siltation and design waves for all major projects undertaken by Riedel and Byrne.

Over the last 15 years Dr. Riedel has concentrated on coastal process, foreshore remediation works, including the impact of sea level rise. His other area of focus has been on the stability of pipelines as they cross the foreshore and on submarine pipeline stability. Most of this work has been for the oil and gas industry in Western Australia.

Within Australia, Dr. Riedel has had significant roles in relation to the independent review of proposed naval facilities in Jervis Bay (1988,) the Third Sydney Runway (1992/3) and The Wilson Point (ECAC) facility in Port Phillip Bay (1995).

Internationally, Dr. Riedel was the Team Leader for an AIDAB funded planning study for low lying coastal lands in Tonga, and the Project Director for the Asian Development Bank funded Coastal Erosion Control Sector Project in Malaysia.

Dr. Riedel has also been responsible for the physical modelling and subsequent design of a wide range of breakwaters for major development projects in Australia and the Pacific Region.

PROFESSIONAL EXPERIENCE :

From October 1993 : To Present EMPLOYER : Coastal Engineering Solutions (ie. CES) POSITION HELD : Director DUTIES : Undertake and manage the investigation, planning, environmental management, engineering design and construction supervision of coastal projects involving foreshore protection, beach nourishment, reclamation, dredging and maritime works.

Coastal hazard Vulnerability Assessments: Dr Riedel has undertaken over 30 assessments around the Victorian coastline since the requirement for such assessments came into being in December 2008. Dr Riedel also hold a “peer review” role for the City of Geelong for assessing the adequacy of CHVA’s in the City of Greater Geelong.

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Shoreline Erosion at Rye Yacht Club: Dr undertook assessments of the damage caused to the foreshore between Rye Jetty and the Rye Yacht Club following two severe storm events which occurred in late June 2008 and April 2009. The erosion was exacerbated due to the occurrence of storm surges that had recurrence intervals in the range of 20 to 100 years. Remedial action in the form of sand by-passing and dune re-establishment were recommended. Esperance Port Enhancement – Implication on Stability of Adjacent Beaches, WA: Dr Riedel undertook coastal processes modelling to investigate wave transformation and beach stability at the Port of Esperance for existing conditions and for conditions simulating an expansion of the port through a breakwater extension of about 300 metres and harbour approach deepening to 22 metres. Cape Conran Coastal Process Study, Victoria: Dr Riedel undertook coastal processes modelling to investigate wave penetration into the boat ramp facility at Cape Conran. Historical aerial photography was used to determine the extent of natural shoreline changes for the adjacent beaches. Advice was provided on alternatives for upgrading the existing facilities. (2008) Dampier Wave Study, WA: Dr Riedel undertook wave modelling to investigate cyclone wave penetration into proposed new port facilities for the Port of Dampier. Statistics on wave conditions at eight locations around the expanded port were produced. (2008) Adelaide Desalination Plant, SA: Dr Riedel provided all of the coastal engineering inputs to this proposed project for a tenderer. It is to be sited at Port Stanvac. Mathematical model of wave penetration from the ocean as well as for locally generated waves was included in the study. (2008) Safety Beach, Dromana, Victoria: Dr Riedel undertook a coastal processes study to investigate cliff erosion at the north eastern end of Safety Beach. Historical aerial photography was used to determine the timing of erosion and a range of mitigation scenarios were formulated and costed. (2008) Mallacoota Panel Hearing, Victoria: Dr Riedel was the chief technical witness with respect to coastal engineering and coastal processes for this hearing. In 2004/5 he had prepared extensive coastal process studies and concepts for developing an ocean access for boat launching at Mallacoota. (2008) Portland Sand Disposal Options, Victoria: Dr Riedel undertook a range of studies for the Port of Portland in relation to their ongoing commitment to sand by-pass the Port of Portland. The studies involved mathematical modelling of scenarios and predicting the response of the shoreline to each scenario. (2008) Tooradin Boat Ramp Coastal Process Study, Victoria: Tooradin Boat Ramp has usability problems due to siltation. Tooradin is also a low lying area of the Victorian coast. Dr Riedel undertook a study of coastal process through a combination of assessment of historical aerial photographs, field data collection of currents and coastal engineering interpretation. (2008) Mount Martha Detail Design, Victoria: Mount Martha North Beach has been eroding over the last eight years. Dr Riedel undertook coastal processes studies including modelling to investigate beach erosion as well a historical analysis of aerial photographs. The conclusion was that a groyne should be constructed at the northern end of the beach and the beach should be nourished. Detailed documentation for tender purposes was produced. (2006-8) Gorgon Gas Project Pipeline Stabilisation: Dr Riedel undertook studies to determine the optimum stabilisation methods for submarine pipelines associated with this project. The studies culminated in physical modelling in Canada in a 3-d wave/current basin supervised by Dr Riedel. (2006-8) Channel Deepening, Victoria: Dr Riedel undertook a Peer Review role in relation to the impacts on seabed stability at the entrance to Port Phillip Bay as a result of channel deepening of the rocky seabed. (2007) St Helens Dredging Alternatives, Tasmania: The Bar at the entrance to Georges Bay upon which St Helens is situated shoals and becomes dangerous for navigation. Dr Riedel undertook a study of the coastal processes and geomorphological development of the system and concluded that Georges Bay was a sand sink and the most practical method of management was removal of sand from the system. (2007)

Blairgowrie Groyne Review, Victoria: Based on a study of the history of groyne construction through historical aerial photography, Dr Riedel undertook a study of the functionality of the groynes to determine which groynes should be maintained

20//12/2010 10-590-vic hprrp RevB Page 20 of 31 Panel of Inquiry into the Environmental Effects Statement For Mornington Safe harbour Statement of Expert Evidence of Peter Riedel of Coastal Engineering Solutions Pty Ltd and which groynes should be removed. The project has been implemented with the removal of a large number of non- functioning or derelict groynes. (2007) Kupe Pipeline Berms, New Zealand: Dr Riedel designed and documented rock mounds in relation to the stabilisation of the submarine pipeline servicing the Kupe gas field off the south-west coast of the north island of New Zealand (2006) Physical Modelling of Breakwaters, Wallingford, UK: Dr Riedel supervised physical modelling at Wallingford of 2-D and 3-D physical models for a greenfields port in India at Gavangaram. The models were for Accropode armoured breakwaters. (2006) Lakes Entrance Training Walls Replacement Cost, Victoria: Dr Riedel undertook an assessment of the existing training walls at Lakes Entrance to determine their condition and the value of the asset in terms of its replacement cost. (2006) Sand Management, Victoria: Dr Riedel undertook coastal processes modelling to investigate beach erosion at Mounts Bay and sand management at Apollo Bay Harbour. The erosion issue was also addressed through the comparison of historical aerial photographs that were rectified and overlain. Management methods involving sand recycling and sand by- passing were recommended Draft report submitted. (2005) Port of Portland, Victoria: Dr Riedel undertook mathematical modelling of wave penetration into Portland Harbour to ascertain why ship rolling and ranging problems were occurring. Concluded that the wave penetration was due to a large sand spit off the main breakwater that was refracting waves into the harbour. Recommended configuration dredging to shape the sand bar so that it diffused wave energy. (2005) Barlings Beach, NSW: Dr Riedel undertook a coastal hazard assessment to determine the hazards from long term and short term erosion and recommend buffer zone widths. (2005) Walkerville Boat Ramp & Erosion Issues, Victoria: Dr Riedel has investigated the coastal processes at Walkerville based on historical aerial photographic comparisons and first principles of coastal engineering. In addition improvements to the boat launching facility were investigated and 5 alternatives developed. (2003-2008) Barry Point Port Development, Victoria: Dr Riedel undertook coastal engineering and process studies in relation to they feasibility of the project and in particular in relation to dredging and spoil disposal for the environmental approval process. (2003-2005) Kingston City Council, Victoria: Dr Riedel provides ongoing advice in relation to coastal engineering problems along the bayside foreshore of the shire. Issues investigated thus far include seawall rehabilitation, erosion of the foreshore, scour adjacent to training walls and new foreshore protection projects Bastion Point, Mallacoota, Victoria: Dr Riedel undertook detailed coastal processes modelling for the siting of alternative boat ramp locations. The project was undertaken as being the first phase of an environmental assessment process. (2004-2005) Batu Hijau Pipe Launch, Indonesia: Dr Riedel designed and undertook a comprehensive physical modelling study at Melbourne University for the forces required to launch a 3.5 kilometre, 1250mm diamater HDPE pipeline at model scales of 10: 1 and 62 : 1. (2004) Otway Gas Pipeline Scour, Victoria: A new gas field is being developed off the southwest coast of Victoria. The pipeline which will deliver the gas to shore passes through extensive areas of sandy seabed. Dr Riedel investigated wave conditions along the pipeline route and undertook a scour assessment and investigated the possibility of sand waves, all of which could cause pipeline spanning and over-stressing. (2004) Club Spit Marina, Lakes Entrance, Victoria: Undertook seabed investigations and prepared design concepts and costing for a new marina at Lakes Entrance which involved dredging of about of 70,000 cubic metres of silt and sand. (2004) Lakes Entrance Bar Management, Victoria: Alternative dredging management strategies for the Lakes Entrance bar are being investigated by Gippsland Ports. Dr Riedel is presently completing the coastal processes assessment for a specified number of alternative sand management strategies. (2003) Cunningham Arm and Paynesville Berth Review and Planning. Gippsland Lakes, Victoria: The demand for recreational boat berthing facilities continues to grow in the Gippsland Lakes. In the past berthing facilities have been constructed without an overall Master Plan. Dr Riedel reviewed the existing facilities and recommended a rationalisation of facilities to increase the number of berths substantially and to separate the commercial fishing fleet from the recreational fleet facilities. (2003)

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Shelley Beach Stability, Victoria: Bathing boxes and boatsheds are located along the western section of Shelley Beach. Over the last 50 years the width of beach between these structures and the sea has diminished to the extent that the structures are being subjected to waves and being damaged. Dr Riedel undertook a study of the erosion history and problems and recommended that the vulnerable structures should be relocated to the central/eastern portion of the beach where there was a wide beach. (2003) Middle Ground all Tide Access Study, Victoria: Dr Riedel was the project manager and coastal engineer responsible for the project which included technical, environmental and economic assessment of dredging an all-tide access channel between Port Albert and Port Welshpool within the Nooramunga Marine and Coastal Park of . (2003) Preliminary Design for Priority Beach Nourishment Projects, Port Phillip Bay, Victoria: Dr Riedel completed a study of the coastal processes and prepared preliminary designs and cost estimates for eight separate beaches that would benefit from beach nourishment in the short term. Four of these were in the Geelong area. For DSE (2003) Callala Bay and Currarong Beach Foreshore Erosion Study, NSW: Dr Riedel is completing a study of the erosion problems and preparing alternative remediation strategies for both Callala Bay and Currarong Beaches. The study is being undertaken for Shoalhaven City Council. (2003) Adelaide Metropolitan Beaches Coastal Processes, South Australia: Dr Riedel set up wave and coastal processes models for the whole of Gulf St Vincent and the ocean approaches. The seabed schematisation included over 500,000 grid points nested down to a scale of 25 metres. This model was used to simulate coastal processes for the 28 kilometres of Adelaides metropolitan shoreline. (2002 –2003) Assessment & Management of Coastal Processes in Portland Bay, Victoria: Dr Riedel undertook a comprehensive assessment of the coastal processes affecting the port and the downdrift eroding coastline between Portland and Schnapper Point and has developed a recommended management strategy involving sand by-passing of the port the long term stabilisation of the downdrift beaches. (2002) Gippsland Lakes Coastal Erosion and Management Study, Victoria: The extent of erosion around all of the Gippsland Lakes foreshore was assessed and predictions made for the likely extent of erosion over the next 50 to 100 years. Management strategies for the erosion and associated environmental issues were prepared. Dr Riedel was the specialist coastal engineer on the consulting team. (2002) Materials Offloading Facility, Dampier, Western Australia: Dr Riedel provided a review of the specifications for rock for booth the construction of seawalls and for the backfilling of the pipeline. He recommended that under controlled conditions the specifications could be relaxed so that a much greater proportion of the quarry yield could be incorporated into the project works – leading to potentially large cost savings. (2002) Lake Wellington Canal Development, Victoria: Lake Wellington is the western most lake in the Gippsland Lakes system. There are few residential or boat berthing facilities. Dr Riedel undertook an assessment of water quality and coastal process es issues relating to the construction of a canal estate off the southern shore of the lake. (2002) North Arm Masterplan, Gippsland Lakes, Victoria: Dr Riedel managed the preparation of a master plan for North Arm at Lakes Entrance. The project components included berth rationalisation, dredging and maintenance of the existing environment. (2001) Current Measurements, Scour Assessment, Mermaid Sound, W.A: Dr Riedel planned and undertook a current measurement program in relation to ongoing studies for seabed scour and sand wave formation along the pipeline route for the gas pipeline from the well head to the shoreline. (2001)

Geraldton Port Enhancement Project, W.A.: Dr Riedel completed a series of studies which have run for two years addressing the wave, coastal processes and coastal engineering issues associated with the Geraldton Port Enhancement Project. The project involves increasing the depth of the access channel from approximately 10.5 to 13.5 metres plus the construction of breakwaters, reclamation and beach enhancement. Extensive mathematical modelling of waves and coastal processes was included. Key sensitive issues addressed were the affects on adjacent recreational beaches, effects on wind surfing of swell waves and impacts on the intake pipelines for the lobster holding tanks. (2000-2001)

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Beaches at Risk, Victoria: Dr Riedel worked as an associate to Vantree Pty Ltd in the preparation of this comprehensive study of beaches that were at risk from coastal erosion in Port Phillip Bay. The project was for NRE. (2001) North Arm Master Plan, Lakes Entrance, Victoria: Boating facilities and shoreline use in North Arm have been developed on a “first in best dressed” format and suffers from a lack of planning. Dr Riedel project managed a study for East Gippsland Shire Council which resulted in the production of a draft master plan for marine facilities and beach use in the area.(2001) Mount Martha North Bathing Boxes, Victoria: A large number of bathing boxes were damaged or destroyed as a result of a series of winter storms in 2000. Dr Riedel was the project manager for studies which identified the cause of erosion which lead to the bathing boxes being subjected to undermining and wave attack and then produced a report defining the standards required for the reconstruction of bathing boxes. (2001) Beach Creation at Crusoe Reservoir, Bendigo, Victoria: Bendigo is an inland city with no access to beach amenities. Dr Riedel investigated and then designed a each that could be constructed along the shoreline of Crusoe Reservoir. (2001) Semaphore Park Beach Management Options, South Australia: Dr Riedel completed a study of erosion at Semaphore Park beach, S.A. The beach had been stable or accreting up until about 1983. Since that time it has changed to an eroding beach with an annual average erosion of about 30,000 cubic metres. A range of remedial works including renourishment, groynes and offshore breakwaters has been evaluated and the recommendation is for a single offshore breakwater with minimal mechanical renourishment. (2000) Mt Martha Beach Stability, Victoria: Dr Riedel investigated the stability of the beach following severe storms in winter 2000 that demolished or damaged about 15 boatshed structures along the beach. It was concluded that the conditions causing the erosion and subsequent damage were not overly severe and that if such structures were to be maintained at the back of the beach, the structural standard needed improvement and the floor levels of structures should be increased. (2000) Lake Glenmaggie & Pykes Creek Reservoir Erosion, Victoria: Significant portions of the shorelines of these reservoirs are undergoing erosion. An investigation was undertaken of the extent and possible reasons for the erosion. For eroding areas that were threatening infrastructure such as adjacent housing and public amenities, concepts were prepared for remedial works. (2000) Warrnambool Harbour Siltation Study & Concept Designs, Victoria: Wave hindcasting, mathematical modelling of wave transformation and sediment transport was combined with field work on currents and sediments to determine the causes of siltation and excessive wave penetration into the harbour. Recommendations for upgrading harbour facilities were made and accepted. (1999) Thevenard Island Foreshore Protection, Western Australia: Dr Riedel investigated the mechanism of erosion that had demolished infrastructure, including a seawall during a recent cyclone. Alternative erosion protection works were conceived and compared. (1999) Mouth Stability, Victoria: Dr Riedel investigated the conditions under which the river mouth remained open and the feasibility of artificially opening the river mouth when it was barred. (1999) Impact of Mermaid Marine Access Channel, Western Australia: A new marine facility was being designed adjacent to the Woodside Offshore supply base and tug harbour in Mermaid Sound. Dr Riedel reviewed the proposed new facility and the impact dredging and seawall construction might have on wave penetration and siltation at the Woodside facility. (1999) The Strand Beach Redevelopment, Townsville, Queensland: Dr Riedel undertook a series of studies for Strand from 1995 through to 1998 including detailed coastal process modelling. The results of the modelling were then utilised to design new beach compartments that would be stable for up to the 100year ARI event. (1998) Brighton Sediment Transport Modelling, South Australia: Wave hindcasting and longshore sediment transport modelling was undertaken using Adelaide Airport wind data from 1981 to 1997. Sediment transport was computed every three hours and integrated to provide monthly net and gross longshore transport capacities. (1998) Holdfast Shores and West Beach, South Australia: Dr Riedel undertook detailed coastal process modelling for the foreshore in relation to redevelopment involving the construction of a marina and protected boat ramp. He supervised GENESIS modelling to determine the likely shape of beaches in the lee of offshore breakwaters. (1998)

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Queenscliff Boat Harbour, Victoria: Plans for upgrading the marine facilities for the berthing of boats at Queenscliff were being prepared by Parks Victoria. Dr Riedel provided a specialist role relating to the hydrodynamics and siltation issues for the entrance channel to the marine facility. The entrance channel also provided a conduit for water exchange between and Port Phillip Bay. (1998) Aspendale Beach Renourishment, Victoria: Dr Riedel was the project manager for the sand source and beach management studies that were undertaken in relation to renourishing North Aspendale beach with up to 200,000 cubic metres of sand. (1997) The Strand Seawall, Townsville, Queensland: Dr Riedel undertook a detailed assessment of the damage caused to the seawall by Cyclone Justin in March 1997. Alternative methods of undertaking remedial works were described, evaluated and costed. The Townsville City Council commissioned the study to support their application for Disaster Relief funding. (1997) Rye Front Beach Erosion Study, Victoria: Dr Riedel was the project manager and undertook the coastal process study and prepared alternative solutions for remedial works to control future erosion and improve the beach amenity. (1996) Mount Martha Coastal Study, Victoria: Dr Riedel undertook the detailed studies of waves and coastal processes for this project and performed the overall technical review role in relation to all coastal engineering aspects. (1996) Apollo Bay Coastal Study, Victoria: Dr Riedel set up wave and coastal process mathematical models for the Apollo Bay shoreline in order to develop an understanding of the coastal processes so that alternative methods of stabilising the foreshore could be evaluated. (1996) Point Samson, Western Australia: Supervised Kinhill Engineers staff in relation to mathematical modelling in relation to determining design waves for a jetty structure. (1996) Lakes Entrance, Victoria: Expert witness in relation to coastal processes at the Lakes Entrance sand bar. A fatal accident occurred when a fishing vessel capsized and sank in 1978 as it was crossing the bar at Lakes Entrance. In 1977 the state government had started to dredge a channel through the bar by side-casting. Dr. Riedel’s investigations related to the sand movements across the bar, the stability of the channel, and whether the maintenance dredging was likely to contribute to the formation of new shoals. (1996) Point Nepean Seawalls, Victoria: Dr Riedel was the project manager for studies of the seawall deterioration, geotechnical and structural assessment, development of alternative remedial works, design, documentation and tender review and construction supervision of the remedial works. (1996) Sepang Development Reclamation, Malaysia: Undertook detailed studies of the feasibility and methodology of dredging 70 million cubic metres of sand from Malacca Straits to raise ground levels onshore over an area of 7,000 acres for a mixed development. The studies included identifying the sand source using sampling techniques in water depths of up to 20 metres, and extensive mathematical modelling to determine the impacts of the sand removal as well as the impacts of changing the form of the shoreline as part of the reclamation process. (1995) Penang Sri Metropolis Project, Malaysia: Undertook a feasibility study for the reclamation of some 1,500 acres on the eastern coastal fringe of Pulau Penang, including reclamation of the Middle Bank area. The volume of material to be dredged for the reclamation is some 50 million cubic metres. (1995) South Fremantle Beach, Western Australia: The beach at South Fremantle is to be upgraded by widening the area above high tide, replenishing the beach and stabilising losses from the beach. Dr. Riedel undertook detailed mathematical modelling of the waves and coastal processes at the beach in order to predict equilibrium beach alignments, beach rotation during storms and offshore losses during storms. From these studies recommendations were made for suitable groyne extensions to minimise the losses of sand from South Beach. The impact of groyne extension on the adjacent beach was also investigated. (1995) ECAC facility, Point Wilson, Victoria: Approximately 10 million cubic metres of capital dredging is to be undertaken in Corio Bay (within Port Phillip Bay) of which 2 million cubic metres relates to the construction of a new explosives and armaments wharf facility, boat channel and turning basins. A commission of inquiry was set up to determine whether the project should proceed. Dr. Riedel was engaged to assist the Commissioners with respect to all issues relating to hydrodynamics, waves, coastal processes, and in particular in relation to dredging and the disposal of dredged spoil in offshore dumping grounds within Port Phillip Bay. (1995)

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Phuket Marina, Thailand: Undertook a feasibility study of all the marine/coastal engineering aspects of this project located at the northern end of Phuket Island. Issues addressed included dredging, siltation, protection from waves and currents, and the design of seawalls separating the marina from the foreshore. Prepared dredging documentation for tender call. (1995) Noosa River, Queensland: A study was undertaken for the Noosa Shire Council and others in relation the Noosa River system with respect to providing marina facilities. Noosa river drains an extensive estuary and shallow lake system. The hydrodynamics of these systems had to be maintained. (1994) Penarik Country Beach Resort, Malaysia: Undertook a feasibility study for the coastal engineering aspects of a waterfront housing and resort hotel project ,including the preparation of all the related technical documents to support the environmental impact assessment. (1994) Dunk & Bedarra Islands, Queensland: Investigated the causes of erosion on the resort beaches and advised of alternatives for beach stabilisation and management for the future. Prepared documents for tender to undertake beach replenishment works and groynes constructed from geotextile fabric. (1994) Sunshine Beach, Noosa, Queensland: Prepared the coastal processes component of an environmental impact statement for a subdivision of sea-front land. The key issue addressed was the appropriate buffer width between the high water line and the development of hard facilities. (1994) Royal Reef, Cairns, Queensland: Undertook a review of the design water levels and suggested alternative bund designs and layouts to protect the site from storm surge inundation. Also provided advice with respect to the design waves for the design of the bunds. (1993) Sandy Bay, Hobart, Tasmania: Undertook a study of Sandy Bay beach in relation to its stability and management options to augment stabilisation. For the study, Dr. Riedel completed a review of all previous reports and data, conducted a float drogue current measurement program and took seabed samples in the search of suitable sources of sand for beach replenishment. A report was prepared documenting alternatives for beach management. (1993)

From January 1991 : To September 1993 EMPLOYER : Kinhill Riedel & Byrne POSITION HELD : Coastal Engineering Manager DUTIES : Project manager for various coastal process studies, hydraulic modelling investigations and the design of maritime works, both in Australia , the Pacific Islands and South East Asia.

Third Runway at Sydney Airport, New South Wales: Dr. Riedel was seconded to the Federal Airports Commission to provide independent review and advice in relation to the documentation being produced for the Environmental Management Plan. The advice was specifically focused on the impacts of dredging on the Botany bay shoreline and seabed. (1993)

Lihir, Papua New Guinea: Undertook design wave and water level studies in relation to the design of the disposal of rock waste and for the determination of design wave conditions for the proposed marine facilities at Lihir. (1992)

Batam View Beach Hotel Marina, Indonesia: Coordinated a re-design of the marina and island reclamation to provide adequate protection from waves and to minimise construction costs by using locally available materials. This was followed by design documentation for the new concept, calling for tenders, tender review and recommendation of a contractor. (1992)

Pengerang Harbour, Malaysia: Concept development, feasibility studies and preliminary design for a major residential and commercial development incorporating an inland sea, associated reclamation works and a 350 berth marina. (1992)

Guidelines for Assessing Coastal Buffer Zones Queensland, Australia: Guidelines for quantifying the requirements for an undeveloped coastal buffer zone on tropical coastlines were drawn up for implementation by the Queensland Government’s Coastal Protection Strategy. As the Coastal Engineering Manager on the team, Dr. Riedel was responsible for determining the appropriate techniques for calculating and mapping buffer widths on the entire Queensland coastline (including islands

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Kuantan Foreshore Develepmont, Pahang, Malaysia: Following on from his work on the Coastal Sector Erosion Control Project in Malaysia, Dr Riedel provided all of the planning and conceptual design advice for a large reclamation project on the northern side of the Kuantan River. The project included canal developments, a marina, residential land and a golf course. (1991)

Coastal Erosion Control Sector Project, Malaysia: Dr Riedel was the Project Director and specialist coastal engineer for this Asian Development Bank (ADB) funded project. The project involved the assessment of coastal erosion and stability problems at 45 different sites in East and West Malaysia. For each site mitigation methods were designed and costed taking into account both environmental and economic impacts. The proposed capital works project was accepted for funding by the ADB. (1991)

From April 1979 : To December 1990 EMPLOYER : Riedel & Byrne Consulting Engineers Pty Ltd POSITION HELD : Director DUTIES : Undertook and supervised maritime and coastal engineering studies and designs. This work included wave transformation and storm surge studies. Undertook and supervised wave flume and basin model studies for breakwaters and sea wall stability and for wave penetration into harbours.

McArthur River Marine Facilities, Northern Territory: New port facilities were to be established for a large new mine on the McArthur River. Dr Riedel undertook the site investigation sin relation to the stability of a navigation channel up the river to the mine site. (1990)

False Cape Resort, Queensland: Dr Riedel managed the coastal processes studies for this development which required the dredging of an access channel for marine facilities and at the same time ensuring that the existing beach was not destabilised. (1990)

Glenelg Foreshore EES, South Australia: Dr Riedel provided the coastal processes input to a generic EES which considered 4 different configurations for the development of the foreshore, including a marina at Glenelg. (1990)

Newport Waterways, Queensland: Full scale model testing was conducted to investigate the stability of a 1:5 river gravel beach in relation to a canal estate beach design. The testing was undertaken at Queensland Hydraulics Laboratory by Dr. Riedel. (1989)

Popua Master Plan, Tonga: Dr. Riedel conducted a planning, engineering and initial environmental study for the development of some 200 hectares of low lying land for this project which was funded by AIDAB. The plan included land for institutional, industrial, residential and tourism purposes whilst maintaining the existing cultural and environmental features. (1989)

Tupai Island Development French Polynesia: Dr. Riedel undertook a major field data collection exercise and subsequently supervised a study of the coastal processes and lagoon hydrodynamics affected by a proposed US$1 billion tourist development. (1989-90)

Cape Naturaliste to Yanchep, Western Australia: Dr. Riedel has supervised coastal process studies for a number of beaches along this stretch of the Western Australia coastline. Included are Dunsborough, Busselton, Port Geographe, Minninup, Bunbury, Dawesville, Peel Inlet, Warnbro Sound and south of Yanchep. (1982 – 1989)

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Half Moon Creek Queensland: Marina facilities were desired by a developer within the Half Moon Creek estuary, near Cairns. Inlet stability, particularly of the entrance were carried out and illustrated that a marina within the estuary was not feasible. (1988)

Tug Harbour, Burrup Peninsula, Western Australia: Three dimensional basin modelling was conducted in Queensland to investigate wave penetration into the harbour and to optimise the breakwater length required for protection. (1988)

Laguna Quays / Aqua Del Rey, Queensland: The project is a major integrated resort, much of which is built on reclaimed land to be protected by breakwaters. Dr. Riedel directed the design studies, prepared breakwater cross-sections and supervised flume modelling for the project. (1988)

Paradise Bay, Queensland: Conduct of studies to develop a small boating facility at Paradise Bay, Long Island. Included the coordination of geotechnical and environmental studies, planning of marine facilities, investigations of waves, water levels and currents. (1988)

Fremantle Small Boat Harbour, Western Australia: Dr. Riedel reviewed and modified the design wave parameters for this project before designing and supervising a flume modelling program which resulted in substantial changes to the breakwater design. (1987)

The Dawesville Cut, Western Australia: This project involved cutting a new entrance from the Indian Ocean to Hervey Estuary, W.A. Both mathematical and physical modelling studies were undertaken for the preferred entrance configuration. (1987-8)

North West Shelf Re-suspension of Dredged Materials, Western Australia.: Large volumes of material needed to be dredged and disposed of in Mermaid Sound to provide shipping access to all of the North West Shelf marine facilities. Dr. Riedel was responsible for studies relating to the re-suspension of sediments and determining the ultimate fate of such material. (1987)

Jervis Bay Naval Base, New South Wales: Dr. Riedel was seconded to Australian Construction Services A Division of the Commonwealth Government of Australia), to review and conduct some investigations in relation to the siting and planning of harbour facilities for the fleet relocation. (1987)

Boathaven Bay, Queensland: A large coastal resort is planned, including extensive reclamation, a marina and new beaches. Detailed studies were conducted of beach processes in relation to the new beaches and of coastal processes with respect to siltation of the access channel and harbour. In addition both 3-dimensional basin modelling and flume model testing were used to optimise the breakwater designs. The design emphasis was on using locally available small size armour rock and low crested breakwaters. (1986-7)

Boondall, Queensland: The Brisbane City Council planned a major foreshore development at Boondall in relation to its 1992 Olympic Games bid. Dr. Riedel investigated the wave climate design water levels and hydrodynamics associated with a large island reclamation project at the mouth of Cabbage Tree Creek. (1986)

Lindeman Island Beach, Queensland: As part of the redevelopment of the Lindeman Island Resort, the coastal processes were investigated and the beach designed and subsequently constructed to provide an improved beach amenity at all tides. (1986)

False Cape, Queensland: A tourist resort is proposed at this location incorporating a small harbour and new beaches. Dr. Riedel undertook the feasibility investigations and in conjunction with the architects, planned the marine facilities for the project. (1986)

Cairns Marlin Marina, Queensland : Undertook design studies and prepared the design documentation for the D & C bid by Theiss Contractors to the Cairns Port Authority. (1986)

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Ayr/Home Hill, Queensland: Dr. Riedel was the project director for a study into the planning of all tide boat ramps in the Ayr/Home Hill area. The study included site selection, engineering appraisal and economic analysis. (1986)

Hayman Island Marine Facilities, Queensland: Dr. Riedel coordinated the planning and design of these facilities which included a large area of reclamation, a service port and a beach improvement program. (1985-6)

Abel Point, Queensland: The project consisted of a conventional marina design at a site with a gently sloping seabed. Through the use of flume modelling, the breakwater cross-section was optimised to utilise material available from the local quarry. (1985)

Raby Bay Beaches, Queensland: Raby Bay canal development required new beaches as a frontage to reclaimed land. Using the in-house coastal process software, equilibrium beach alignments were computed together with likely beach rotations and offshore sediment transport rates during storms. (1985)

North Haven Siltation, South Australia: North Haven boat harbour entrance is subjected to continual siltation. A study was undertaken under the direction of Dr. Riedel to investigate the processes causing the siltation. This was followed by an optimisation of solutions with regards to future maintenance. (1985)

Rosslyn Bay, Queensland: A small vessel marina and resort node is being developed at Rosslyn Bay. Studies were conducted of the wave climate including the modelling of cyclone waves to reproduce the failure of Rosslyn Bay breakwater during Cyclone David in 1976. (1985)

Port Geographe Resort, Western Australia: As the Coastal process modeller, Dr. Riedel was responsible for the modelling of waves and longshore sediment transport and for the subsequent interpretation of the results. (1984)

Bougainville Tailings Disposal, Papua New Guinea: The Bougainville Copper/Gold mine intended disposing of its mining tailings into Empress Augusta Bay via a pipeline. Dr. Riedel was responsible for the wave climate, hydrodynamic studies and sediment transport studies used to predict the behaviour of the tailings material after its discharge to the sea. (1984)

Jubilee Point, South Australia: A detailed study was conducted of waves, water levels and currents in relation to a proposed large scale residential/resort development at the mouth of the Patawalonga River. Dr. Riedel coordinated these studies. (1984)

Townsville Harbour - Benwell Road Reclamation, Queensland: Dr. Riedel conducted the feasibility investigations, model design, flume model studies and proposed design sections for the breakwaters enclosing the reclamation. (1983)

Maui Pipeline, New Zealand: Extensive large scale model testing was conducted under the direction of Dr. Riedel at Monash University, for the design of stable rock armouring to protect the pipeline. (1983)

North Rankin Pipeline, Western Australia: Large scale flume modelling was conducted at Monash University to investigate the stability of rock armouring for the pipeline, as well as to assess how effective a rock berm was in preventing a dragging ships anchor from fouling the pipeline. (1981-1982)

North West Shelf Supply Base, Western Australia: Designed a dredging layout for the access channel to the supply base which acted as a wave dissipater and at the same time minimised maintenance dredging within the channel. (1981)

North West Shelf Supply Base, Western Australia: Dr. Riedel investigated the design wave and water level parameters for the design of the Supply Base associated with the North Rankin gas field development. The work included statistical and mathematical modelling. The investigations were followed by physical modelling which Dr Riedel supervised over a period of 6 months(1980-1981)

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Port Bellarine Canal Development, Victoria: Dr Riedel undertook all of the coastal processes studies for this new development and prepared preliminary plans for the marina and associated beaches. (1979)

From September 1973 : To July 1979 EMPLOYER : Australian Govt Dept of Works – Maritime Works Division POSITION HELD : Coastal Engineer – Supervising Coastal Engineer DUTIES : Responsible for the investigations and design of various maritime works, often associated with the Dept. of Defence in Australian Waters. The larger projects undertaken are listed. Brisbane Airport, Queensland: During the planning stages for Brisbane's new airport, Dr. Riedel was responsible for all the studies relating to the replacement of Serpentine Creek with a floodway. They included design water levels, design of a stable floodway, including modelling, siltation minimisation methods, design waves and the impacts of dredging in Moreton Bay on the surrounding coastline. (1978)

Darwin Patrol Boat Base, Northern Territory: Dr. Riedel conducted detailed studies of waves, water levels (cyclone storm surge) and currents including measurements and modelling for this project. (1977-8)

Purrari Port Investigations, Papua New Guinea: Dr Riedel undertook all of the investigations relating to the development of a new port on the Gulf of Papua. He was supervised by world renpowned Dr Wiegel of the USA. (1976-7)

Cairns Patrol Boat Base, Queensland: Dr Riedel undertook siltation investigations for the existing facility at Cairns as a precursor to expanding the facility. The work included field data collection. Dr Riedle predicted siltation rates which were subsequently found to be correct 10 years later. (1976)

Cyclone Tracy, Darwin: Dr. Riedel was responsible for the determination of design cyclone surge levels. These levels were set following the devastation caused by Cyclone Tracy and were largely determined by hydrodynamic modelling of cyclone surge. (1975)

Swan Island Erosion, Victoria: Dr Riedel investigated the causes of erosion at Swan Island. The erosion was threatening defence facilities. He wrote a technical paper on his findings in 1977. (1974-77)

Cockburn Sound Naval facilities, Western Australia: Dr Riedel was recruited to Maritime Works to take over the studies and monitoring programs associated with this large new naval facility. (1973-75)

From September 1972 : To August 1973 EMPLOYER : Maritime Services Board of NSW POSITION HELD : Coastal Engineer DUTIES : Responsible for the field data collection associated with the operation of a large scale physical model of Botany Bay which had been set up for studies relating to the design and construction of a “greenfields” port in Botany Bay.

OVERSEAS ASSIGNMENTS: Australia, China, Malaysia , Tonga, Kiribati, Fiji, French Polynesia, Solomon Islands, Papua New Guinea, Indonesia, New Zealand, Philippines, Singapore, Taiwan, Thailand, USA and Vietnam.

LANGUAGES AND DEGREE OF PROFICIENCY English: native tongue German: second language PUBLICATIONS

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'Measurement of Bed Shear Stress Under Waves'. 1972. H.P. Riedel, J.W. Kamphius and A. Brebner. Proc. 13th Coastal Engineering Conference, Vancouver.

'A New Oscillating Water Tunnel'. 1973. A. Brebner and H.P. Riedel. Journal of Hydraulic Research, IAHR, Vol. II, No. 2.

'A Shear Plate for Use in Oscillatory Flow'. 1973. H.P. Riedel and J.W. Kamphius. Journal of Hydraulic Research, IAHR, Vol. II, No. 2.

'Design of a Small Boat Harbour in a Cyclone Area - Townsville'. 1975. H.P. Riedel and P.F. Barlow. 2nd Australian Conference on Coastal and Ocean Engineering.

'Numerical Modelling - An Aid to Assessing Field Data'. 1976. H.P. Riedel and F.L. Wilkinson. Proc. 15th Coastal Engineering Conference, Hawaii.

'Beach Changes at Swan Island, Victoria, 1886 - 1976'. 1977. H.P. Riedel and B.L. Fidge. 3rd Australian Conference on Coastal and Ocean Engineering.

'Coastal and Ocean Engineering Research and Development in Australia - State of Art'. 1978. A.B. Hicks and H.P. Riedel. 4th Australian Conference on Coastal and Ocean Engineering.

'Analysis of 5 Years of Wave Data, Cockburn Sound'. 1978. H.P. Riedel and F.L. Trajer. 4th Australian Conference on Coastal and Ocean Engineering.

'Characteristics of Inlets/Estuaries Discharging into Sheltered Waters'. 1980. H.P. Riedel and M.R. Gourlay. Proc. 17th International Conference on Coastal Engineering, Australia.

'Cyclone Wave Generation in the Australian Tropics'. 1981. H.P. Riedel and G. Byrne. 5th Australian Conference on Coastal and Ocean Engineering.

'Dredging to Minimise Wave Penetration into a Harbour'. 1982. H.P. Riedel and A.P. Byrne. 18th Coastal Engineering Conference, Cape Town.

'An Evaluation of Breaking Wave Design Data'. 1983. T.T. Nguyen and H.P. Riedel. 6th Australian Conference on Coastal and Ocean Engineering.

'Townsville - Magnetic Island Submarine Pipeline'. 1983. G. Byrne and H.P. Riedel. 6th Australian Conference on Coastal and Ocean Engineering.

'Hindcast Wave Statistics'. 1985. H.P. Riedel, A.P. Byrne and M. McCormack. 7th Australian Conference on Coastal and Ocean Engineering, Wellington, New Zealand.

'Random Breaking Waves - Horizontal Seabed'. 1986. H.P. Riedel and A.P. Byrne. 20th International Conference on Coastal and Ocean Engineering, Taiwan.

'Hayman Island Breakwaters - Design and Construction'. 1988. H.P. Riedel and M.P. Rogers. 2nd Australasian Port, Harbour and Offshore Engineering Conference, Brisbane.

‘Creation of Tanjung Aru Resort Beaches, Malaysia’. 1997. B.J. Macfarlane, P.L. O’Brien and H.P. Riedel. 13th Australasian Coastal and Ocean Engineering Conference, Christchurch.

‘Holdfast Shores and West Beach, S.A. - Coastal Process Modelling’. 1999. Peter Riedel & Ben Macfarlane. 14th Australasian Coastal and Ocean Engineering Conference, Perth.

‘Beach Renourishment at The Strand, Townsville’. 1999. Peter Riedel, Paul O’Brien, Russell Smith and Ben Macfarlane. 14th Australasian Coastal and Ocean Engineering Conference, Perth.

‘Field Wave and Current Model Testing – Pipelines’. 2000. H.P. Riedel and P.L. O’Brien. Proc. 27th Intl. Conference on Coastal Engineering, Sydney, Australia.

‘Response to Coastal Erosion around the Gippsland Lakes, Victoria’. 2003. E. Sjerp, H.P. Riedel and E.C.M Bird. Coasts and Ports Australasian Conference, Auckland, NZ..

‘Re-use of Dredge Spoil for Beach Nourishment Projects, Victoria, Australia’ 2003, Z. Toogood and H. P. Riedel Coasts and Ports Australasian Conference, Auckland, NZ.

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