assessment process - chevron corporation · comment from monday july 26, 2010 until monday october...
TRANSCRIPT
The Environmental Protection Authority (EPA)
invites people to make a submission on this proposal.
The environmental impact assessment process is designed
to be transparent and accountable, and includes specific
points for public involvement, including opportunities
for public review of environmental review documents.
In releasing this document for public comment, the EPA
advises that no decisions have been made to allow this
proposal to be implemented.
The Proposal
Chevron Australia Pty Ltd (Chevron), as operator of the
Wheatstone Project (Project), proposes to construct and
operate a Liquefied Natural Gas (LNG) plant and a domestic
gas (domgas) plant near Onslow on the Pilbara coast in
Western Australia (WA). The development is to be part
of the Ashburton North Strategic Industrial Area (SIA)
proposed by the Western Australian Government.
The Project will require the installation of gas gathering,
export and processing facilities in Commonwealth and
State waters and on land. The Project will require the
dredging of a shipping access channel and the construction
of a new industrial port facility. The associated LNG
processing plant will be located on the Ashburton North
Strategic Industrial Area approximately 12km south-west
of the town of Onslow, Western Australia. The LNG plant
will have a maximum capacity of 25 Million Tonnes Per
Annum (MTPA).
The Project also includes a domgas plant which will have a
capacity equal to approximately 15 per cent of LNG sales.
Domestic gas will be delivered to the Western Australian
market via the Dampier-to-Bunbury natural gas pipeline.
Assessment Process
Following referral of the Project in September 2008,
the Commonwealth Department of the Environment,
Water, Heritage and the Arts (DEWHA) and the Western
Australian Environmental Protection Authority (EPA)
determined that the proposed Project should be formally
assessed at the Environmental Impact Statement (EIS)
level under the Environment Protection and Biodiversity
Conservation Act 1999 (the EPBC Act) (EPBC 2008/4469)
and the Environmental Review and Management
Programme (ERMP) level under the Environment
Protection Act 1986, respectively.
The Commonwealth and Western Australian governments
have agreed to a coordinated environmental assessment
process. A single EIS/ERMP document that satisfies
the requirements of each jurisdiction is required under
this process. Comments from government agencies
and from the public will assist the EPA to prepare an
assessment report in which it will make recommendations
to government.
Chevron Australia has prepared the Draft
EIS/ERMP in accordance with EPA and DEWHA guidelines
and as set out in the Environmental Scoping Document
(Chevron Australia 2009). The EIS/ERMP describes the
proposal, and examines the likely environmental effects
and proposed environmental management procedures
associated with the Project.
The Draft EIS/ERMP is being placed on public exhibition
for ten weeks. DEWHA and the EPA will assess the Draft
EIS/ERMP following receipt of public submissions,
and Chevron’s response to those submissions, before
reporting to relevant ministers for a final decision on
whether the Project should be approved and if so, under
what conditions. Comments from government agencies
and from the public will assist the EPA to prepare an
assessment report in which it will make recommendations
to government. DEWHA will also be informed by comments
on the Draft EIS/ERMP and will prepare a separate
assessment report for the Minister for Environment
Protection, Heritage and the Arts.
Invitation to Comment
i
Availability of the Draft EIS/ERMP for Public Comment
This Draft EIS/ERMP will be available for public
comment from Monday July 26, 2010 until Monday
October 4, 2010.
Copies of the Draft EIS/ERMP may also be downloaded
from www.chevronaustralia.com.au. Chevron Australia
encourages the use of electronic copies of this
EIS/ERMP document.
Hard copies of the Draft EIS/ERMP may be purchased for
$10 (including postage and packaging) or a DVD version
is available free of charge by contacting:
• Chevron Australia Pty Ltd
Attention: Wheatstone EIA Coordinator
GPO Box S1580
Perth, WA 6845.
Free Call: 1800 611 246
Email: [email protected]
Copies of the Draft EIS/ERMP will be available
for examination at:
• Department of Environment and Conservation
Library/Reading Room
4th Floor, The Atrium
168 St Georges Tce
Perth, WA 6000
• JS Battye Library of West Australian History
Perth Cultural Centre
25 Francis St
Northbridge, WA 6000
• Department of Environment
and Conservation Regional Office
Lot 3, Anderson Road,
Karratha Industrial Estate, Karratha
PO Box 835, Karratha, WA 6714
• Department of Environment
and Conservation District Office
Exmouth District
20 Nimitz Street, Exmouth
PO Box 201, Exmouth, WA 6707
• Shire of Ashburton Public Libraries:
• Onslow (Shire Office, Second Ave)
• Tom Price (Community Centre)
• Paraburdoo (Paraburdoo Shopping Complex)
• Pannawonica (Pannawonica Drive)
• Department of the Environment,
Water, Heritage and the Arts Library
John Gorton Building
King Edward Tce
Parkes, ACT 2600.
Public Submissions
Why write a submission?
A submission is a way to provide information, express your
opinion and put forward your suggested course of action
- including any alternative approach. It is useful if you
indicate any suggestions you have to improve the proposal.
All submissions received by the EPA will be acknowledged.
Electronic submissions will be acknowledged electronically.
The proponent will be required to provide adequate
responses to points raised in submissions. In preparing its
assessment report for the Minister for the Environment,
the EPA will consider the information in submissions, the
proponent’s responses and other relevant information.
DEWHA will also be informed by public submissions and
the proponent’s responses in preparing it’s separate
assessment report for the Minister for Environment
Protection, Heritage and the Arts.
Submissions will be treated as public documents unless
provided and received in confidence, subject to the
requirements of the Freedom of Information Act 1992,
and may be quoted in full or in part in each report.
Invitation to Comment (cont’d)
ii
Why not join a group?
If you prefer not to write your own comments, it may be
worthwhile joining with a group or other groups interested
in making a submission on similar issues. Joint submissions
may help to reduce the workload for an individual or group,
as well as increase the pool of ideas and information. If you
form a small group (up to 10 people) please indicate all the
names of the participants. If your group is larger, please
indicate how many people your submission represents.
Developing a submission
You may agree or disagree with, or comment on, the
general issues discussed in the Draft EIS/ERMP or the
specific proposals. It helps if you give reasons for your
conclusions, supported by relevant data. You may make
an important contribution by suggesting ways to make the
proposal environmentally more acceptable.
When making comments on specific proposals in the Draft EIS/ERMP:
• Clearly state your point of view
• Indicate the source of your information or argument
if this is applicable
• Suggest recommendations, safeguards or alternatives.
Points to keep in mind
By keeping the following points in mind, you will make it
easier for your submission to be analysed:
• Attempt to list points so that issues raised are clear.
A summary of your submission is helpful
• Refer each point to the appropriate section, chapter
or recommendation in the Draft EIS/ERMP
• If you discuss different sections of the Draft EIS/
ERMP, keep them distinct and separate, so there is no
confusion as to which section you are considering
• Attach any factual information you may wish to
provide and give details of the source. Make sure
your information is accurate.
Remember to include:
• Your name
• Address
• Date
• Whether you want your submission to be confidential.
Public submissions close on October 4, 2010.
Public submissions for both the WA State process and the
Commonwealth process will be coordinated by the WA EPA.
The EPA prefers submissions to be made electronically
using one of the following:
• The submission form on the EPA’s website:
www.epa.wa.gov.au/submissions.asp
• By email to [email protected].
Alternatively, submissions can be:
• Posted to: Chairman, Environmental Protection
Authority, Locked Bag 33, Cloisters Square,
WA 6850, Attention: Peter Walkington
• Delivered to the Environmental Protection Authority,
Level 4, The Atrium, 168 St Georges Terrace,
Perth, WA 6000, Attention: Peter Walkington
or
• Faxed to (08) 6467 5562.
If you have any questions on how to make a submission,
please ring the EPA assessment officer, Peter Walkington
on (08) 6467 5412.
iii
Invitation to Comment (cont’d)
Wheatstone Project Executive Summary
iv | Chevron Australia Pty Ltd
Foreword
On behalf of Chevron Australia, I am pleased to present
this Draft Environmental Impact Statement/Environmental
Review and Management Programme for the proposed
Wheatstone Project. As the Commonwealth and Western
Australian governments have agreed to a coordinated
environmental assessment process, this document
is designed to meet the assessment requirements
of both jurisdictions.
The Wheatstone Project is intended to bring significant
benefits to Australia by underpinning a LNG and domestic
gas hub at Ashburton North with significant growth
potential for Chevron and third party natural gas.
The creation of the hub will lower the economic limit
to enable future developments, and increase the number
of supply points for domestic gas. The Wheatstone Project
will also provide an estimated 6,500 direct and indirect
jobs during construction plus significant Australian
industry participation.
Chevron Australia, proponent of the Wheatstone Project,
has been involved in managing existing oilfield operations
in the Pilbara Region of Western Australia for more than
45 years. The management of these operations on a
Class A nature reserve is widely recognised as a
demonstration of the successful co-existence of petroleum
operations and the protection and maintenance of
conservation values.
The environmental management strategies developed to
avoid or mitigate the potential impacts of the Wheatstone
Project will protect conservation and biodiversity values
and enhance Chevron Australia’s successful environmental
stewardship in the Pilbara.
The potential beneficiaries of the Wheatstone Project
range from communities in the Pilbara and the state of
Western Australia to the whole of the Australian nation
and our international customers.
Our success in managing petroleum operations, as well
as our diligence in preparing this plan, demonstrates
Chevron’s commitment to meeting our environmental
responsibilities, whilst also meeting national and
international clean energy demands.
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Chevron Australia Pty Ltd | 1
Executive Summary
ContentsForeword iv
Wheatstone Project Abbreviations and Acronyms 4
1.1 Introduction 6
1.2 Project Proponent 7
1.3 Environmental and Social Commitment and Responsibility 7
1.4 Project Description 7
1.5 Development Timeline 9
1.6 Project Objectives 10
1.7 Site Selection and Development Alternatives 10
1.8 Legal Framework for the Proposal 11
1.9 Stakeholder Consultation 11
1.10 Existing Environment 11
1.10.1 Local Marine Environment 11
1.10.2 Local Terrestrial Environment 12
1.10.3 Socio-economic and Cultural Environment 13
1.11 Emissions from the Project 13
1.11.1 Greenhouse Gas and Energy Efficiency 13
1.11.2 Atmospheric Emissions 15
1.11.3 Light 15
1.11.3.1 Offshore Facilities Light Emissions 15
1.11.3.2 Onshore Facilities Light Emissions 15
1.11.4 Noise 16
1.11.4.1 Potential Onshore Noise Emissions during Construction 16
1.11.4.2 Potential Onshore Noise Emissions during Operations 17
1.11.5 Marine Discharges 17
1.11.5.1 Offshore Facilities Discharges 17
1.11.5.2 Onshore Discharges 18
1.11.6 Waste Production and Management 18
1.11.6.1 Construction Wastes 18
1.11.6.3 Waste Management 19
1.11.6.4 Local Facilities 19
1.12 Environmental Risk Assessment and Management 19
1.12.1 Overview 19
1.12.2 Marine Risk Assessment and Management 20
1.12.2.1 Water and Sediment Quality 20
1.12.2.2 Benthic Primary Producer Habitat 20
1.12.2.3 Marine Fauna 20
1.12.2.4 Coastal Processes 21
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2 | Chevron Australia Pty Ltd
Executive Summary
Contents (cont’d)1.12.3 Terrestrial Risk Assessment and Management 21
1.12.3.1 Soils and Landforms 21
1.12.3.2 Groundwater 21
1.12.3.3 Surface Water 21
1.12.3.4 Flora and Vegetation 21
1.12.3.5 Terrestrial Fauna 21
1.12.3.6 Subterranean Fauna 21
1.12.3.7 Air Quality 22
1.12.4 Social Risk Assessment and Management 22
1.12.4.1 European Cultural Heritage 22
1.12.4.2 Aboriginal Cultural Heritage 22
1.12.4.3 Local Fishing and Pearling 22
1.12.4.4 Disturbance to Other Recreational Use 22
1.12.4.5 Public Amenity 23
1.12.4.6 Health and Wellbeing 23
1.13 Hydrocarbon Leaks and Spills 24
1.14 Cumulative Impacts 24
1.15 Wheatstone Environmental Management Program 24
1.15.1 Overview 24
1.15.2 Proposed Outcome-based Conditions 26
1.15.3 Proposed Statutory EMPs 26
1.15.4 Subsidiary Plans 26
1.16 Conclusion 27
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Chevron Australia Pty Ltd | 3
TablesTable 1.1: Scale of Change to Visual Amenity 23
Table 1.2: Projects (Actions) Considered for Cumulative Assessment 25
Table 1.3: Proposed Outcome-based Conditions 26
Table 1.4: Statutory EMPs 27
Table 1.5: Marine Risk Assessment Summary 28
Table 1.6: Terrestrial Risk Assessment Summary 72
Table 1.7: Social Risk Assessment Summary 96
FiguresFigure 1.1: Location of the Wheatstone Project 6
Figure 1.2: Proposed Location of the Wheatstone Project Gas Processing Facilities and Associated Infrastructure 8
Figure 1.3: Indicative Schedule for Development of the Wheatstone Project (Trains 1 and 2) 10
Figure 1.4: Benchmarked Greenhouse Gas Emissions Intensity 14
Figure 1.5: Light Intensity 16
Figure 1.6: Predicted Noise Contours for Pile Driving During Construction 17
Figure 1.7: Predicted Noise Contours During Routine Operations 18
Figure 1.8: Wheatstone Environmental Management Program 25
Executive Summary
Executive Summary
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4 | Chevron Australia Pty Ltd
Abbreviation Meaning
ANZECC Australian and New Zealand Environment and Conservation Council
AQIS Australian Quarantine and Inspection Service
ARMCANZ Australia New Zealand Standard Industry Classifications
ABU Chevron Australasian Business Unit (previously ASBU)
BPPH Benthic Primary Producer Habitat
BTEX Benzene, toluene, ethyl-benzene and xylene
CEMP Construction Environmental Management Plan
Condensate Natural gas condensate
CPMP Coastal Processes Management Plan
CRCP Cane River Conservation Park
CSD Cutter Suction Dredge
Cth Commonwealth
CW Cooling water
DBNGP Dampier to Bunbury Natural Gas Pipeline
DEC Western Australian Department of Environment and Conservation
DEMP Decommissioning Environmental Management Plan
DEWHA Commonwealth Department of the Environment, Water, Heritage and the Arts
DMP Department of Mines and Petroleum
DO Dissolved oxygen
DoF Department of Fisheries
DoH Department of Health
DRF Declared Rare Flora
DSDMP Dredging and Spoil Disposal Management Plan
EIS Environmental Impact Statement
EMP Environmental Management Plan
EP Act (WA) Western Australian Environmental Protection Act 1986
EPA Western Australian Environmental Protection Authority
EPBC Act (Cth) Commonwealth Environment Protection and Biodiversity Conservation Act 1999
ERMP Environmental Review and Management Programme
FEED Front End Engineering Design
FID Final Investment Decision
GHG Greenhouse Gas
GS Guidance Statement
ha Hectare(s)
IMP Introduced marine pest
Wheatstone Project Abbreviations and Acronyms
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Chevron Australia Pty Ltd | 5
Abbreviation Meaning
ANZECC Australian and New Zealand Environment and Conservation Council
AQIS Australian Quarantine and Inspection Service
ARMCANZ Australia New Zealand Standard Industry Classifications
ABU Chevron Australasian Business Unit (previously ASBU)
BPPH Benthic Primary Producer Habitat
BTEX Benzene, toluene, ethyl-benzene and xylene
CEMP Construction Environmental Management Plan
Condensate Natural gas condensate
CPMP Coastal Processes Management Plan
CRCP Cane River Conservation Park
CSD Cutter Suction Dredge
Cth Commonwealth
CW Cooling water
DBNGP Dampier to Bunbury Natural Gas Pipeline
DEC Western Australian Department of Environment and Conservation
DEMP Decommissioning Environmental Management Plan
DEWHA Commonwealth Department of the Environment, Water, Heritage and the Arts
DMP Department of Mines and Petroleum
DO Dissolved oxygen
DoF Department of Fisheries
DoH Department of Health
DRF Declared Rare Flora
DSDMP Dredging and Spoil Disposal Management Plan
EIS Environmental Impact Statement
EMP Environmental Management Plan
EP Act (WA) Western Australian Environmental Protection Act 1986
EPA Western Australian Environmental Protection Authority
EPBC Act (Cth) Commonwealth Environment Protection and Biodiversity Conservation Act 1999
ERMP Environmental Review and Management Programme
FEED Front End Engineering Design
FID Final Investment Decision
GHG Greenhouse Gas
GS Guidance Statement
ha Hectare(s)
IMP Introduced marine pest
Abbreviation Meaning
LEP Levels of ecological protection
LNG Liquefied Natural Gas
MARPOL“Marine Pollution”. Refers to the International Convention for the Prevention of Pollution From Ships, 1973 as modified by the Protocol of 1978.
MEG Mono ethylene glycol
MFMP Marine Fauna Management Plan
MMscfd Million standard cubic feet per day
MOF Materials Offloading Facility
MOPP Marine Oil Pollution Plan
MTPA Million tonnes per annum
NEPM National Environment Protection Measure
NES National Environmental Significance
NO2
Nitrogen dioxide
NORM Naturally occurring radioactive material
NOPSA National Offshore Petroleum Safety Authority
NWS North West Shelf
O3
Ozone
OBC Outcome-based Condition
OE Operational Excellence
OEMP Operations Environmental Management Plan
OEMS Operational Excellence Management System
OPGGS Act (Cth) Commonwealth Offshore Petroleum and Greenhouse Gas Storage Act 2006
PASS Potential acid sulfate soils
PLF Product Loading Facility
PM10
Particulate matter of 10 microns or less
PNEC Predicted No Effect Concentration
PW Produced water (including formation water)
SIA Strategic Industrial Area
SO2
Sulfur dioxide
TPH Total petroleum hydrocarbons
TSHD Trailing Suction Hopper Dredge
TSS Total suspended solids
VSP Vertical seismic profiling
WHO World Health Organisation
Executive Summary
Executive Summary
Wheatstone Project Executive Summary
6 | Chevron Australia Pty Ltd
1.1 IntroductionChevron Australia Pty Ltd (Chevron), as operator of the Wheatstone Project (Project), proposes to construct and operate a 25 million tonne per annum (MTPA) Liquefied Natural Gas (LNG) plant and a domestic gas (domgas) plant near Onslow on the Pilbara coast in Western Australia (WA) (Figure 1.1). The development is to be part of the Ashburton North Strategic Industrial Area (SIA) proposed by the Western Australian Government.
The Project comprises a range of offshore and onshore infrastructure components to recover gas from Petroleum Titles WA-253-P, WA-17-R, WA-356-P, and WA-16-R (Figure 1.1). An offshore process platform will provide initial treatment of the gas and natural gas condensate (condensate), which will then be transported via a subsea pipeline to an onshore LNG processing facility. The resultant LNG and condensate will be shipped to worldwide markets. Gas from the plant will be made available to the Western Australian domestic market via an onshore pipeline installation.
The development of the Project as a 25 MTPA multi-train LNG facility reduces the potential requirement for future expansion of Chevron’s gas-processing facilities in the Ashburton North SIA, and lessens the need for future LNG-related developments in the Pilbara; the establishment of a processing hub will facilitate development of additional offshore gas resources. These may be in the Carnarvon Basin and other areas, from both Chevron operated Petroleum Titles and those operated by other parties.
This Executive Summary has been prepared by Chevron and provides a summary overview of the information presented in the Wheatstone Draft Environmental Impact Statement /Environmental Review and Management Programme (EIS/ERMP). This includes:
• The Project development
• Site selection and development alternatives
• The existing environment
• Potential impacts and mitigation measures.
Figure 1.1: Location of the Wheatstone Project
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Chevron Australia Pty Ltd | 7
The Draft EIS/ERMP has been prepared for the Project in accordance with the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) and the Western Australian Environmental Protection Act 1986 (EP Act). For the purposes of this document, the word “Project” is interchangeable with the word “Proposal”, as used by the Western Australian Environmental Protection Authority (EPA), and also the term “Controlled Action” as defined under the EPBC Act (Cth).
Chevron has implemented a trial of the application of a risk-based approach for environmental impact assessment at the request of the EPA. The risk-based approach enables the potential impacts or hazards associated with Project activities to be evaluated on the basis of potential risk to the environment. Environmental investigations, assessment and mitigation can then be focused on the factors or receptors considered to be at High and Medium-level risk of adverse impact. Low and Very Low risks are also assessed but in less detail. Risk-assessment summary tables can be found at the end of this Executive Summary. These detail the risk rankings assigned to each aspect and factor for the construction and operations phases of the Project. They include a summary of potential impacts, mitigation and management measures and relevant assumptions.
1.2 Project ProponentChevron Corporation is an integrated energy company whose businesses are involved in every aspect of the global crude oil and natural gas industry. In 2009, the Chevron Corporation companies produced 2.7 million net oil-equivalent barrels per day from operations around the world. As of March 2009, net production of natural gas was more than 141 Mm3 (5 billion cubic feet) per day. Chevron Corporation’s businesses employ approximately 62 000 staff, support a network of more than 22 000 retail outlets on six continents and have invested in power generating facilities in the United States, Australia and across Asia.
Chevron Corporation, through its Australian subsidiary, Chevron, has been present in Australia for more than 50 years. With more than 1800 staff, Chevron manages its equal one-sixth interest in the North West Shelf Venture, operates the Barrow Island and Thevenard Island oilfields, and leads the development of the Gorgon and Wheatstone natural gas projects. Chevron is also a partner in the Browse liquefied natural gas development and a significant investor in exploration offshore north-west Australia. In addition, Chevron’s Perth-based Global Technology Centre provides technology support and solutions to the company’s operations in Australia and around the world.
1.3 Environmental and Social Commitment and Responsibility
It is the policy of Chevron Corporation to protect the safety and health of people and the environment, and to conduct operations reliably and efficiently. The systematic management of safety, health, environment, reliability and efficiency to achieve world-class performance is defined as Operational Excellence (OE). Chevron Corporation’s commitment to OE is embodied in The Chevron Way value “Protecting People and the Environment”, which places the highest priority on health and safety, and the protection of assets and the environment.
In 2008, Chevron Corporation received attestation from Lloyd’s Register Quality Assurance that the OE management system (OEMS) meets all requirements of the International Standards Organization’s 14001 environmental management system standard and the Occupational Health and Safety Assessment Series management specification 18001, and that OEMS is implemented throughout the corporation. These standards are international benchmarks and demonstrate Chevron’s commitment to world-class performance.
Chevron has developed a range of environmental management measures and controls collectively termed the Environmental Management Program (Program). The Program is designed to facilitate the implementation of Chevron’s Strategic Australasia Business Unit (ABU) OEMS and ABU Policy 530 – Operational Excellence, and to meet legal requirements.
1.4 Project Description In August 2004, a significant gas discovery was made at the Wheatstone-1 well in Chevron’s solely held WA-253-P Petroleum Title, located offshore approximately 225 km north of Onslow in WA (Figure 1.1). This complemented the discovery in 2000 of natural gas in Petroleum Title WA-17-R, located approximately 10 km from WA-253-P. The Project will produce gas from Petroleum Titles WA-253-P and WA-17-R (held 100 per cent by Chevron companies), WA-356-P (held by third parties), and WA-16-R (held by Chevron companies and Shell Development Australia). Chevron proposes to construct and operate a 25 MTPA LNG plant and 625 million standard cubic feet per day (MMscfd) domestic gas (domgas) plant. The development is to be part of the Ashburton North SIA proposed by the Western Australian Government (Figure 1.2). The Project stands to generate significant employment opportunities: Approximately 3000 workers (maximum 5000) at the peak of construction activity in 2014 and
Wheatstone Project Executive Summary
8 | Chevron Australia Pty Ltd
Figure 1.2: Proposed Location of the Wheatstone Project Gas Processing Facilities and Associated Infrastructure
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Chevron Australia Pty Ltd | 9
approximately 300 workers (maximum 400) during operations. The Wheatstone Project will provide an estimated 6500 direct and indirect jobs during construction plus significant Australian industry participation.
Approval is being sought for the design, construction, commissioning, operation and decommissioning phases of the Project. The Project’s key characteristics include:
• Offshore production facilities with a nominal capacity of 9 MTPA LNG, including wells, subsea installations and offshore platforms
• An export pipeline (trunkline) to provide feed gas from the offshore production infrastructure to the onshore gas processing facility
• A gas processing and export facility, including 25 MTPA LNG processing facility and domestic gas processing plant, LNG and condensate product storage, power generation, water supply, waste disposal, and associated support facilities
• Marine facilities including a shipping channel, turning basin, Materials Offloading Facility (MOF) and Product Loading Facility (PLF)
• A multi-purpose infrastructure corridor, which will incorporate an access road to the site as well as the domestic gas pipeline connecting to the existing Dampier-to-Bunbury Natural Gas Pipeline (DBNGP)
• An accommodation village, access roads and supporting infrastructure.
The plant pad elevation will be raised and onshore fill material may need to be sourced from a third party quarry if it cannot be sourced locally from borrow areas. Any third-party quarries used to source the fill material will have the appropriate government licenses and approvals.
The Project is expected to have an operating life of at least 40 to 50 years. At the end of its useful life decommissioning will be required. In the lead up to this point, reuse and recycling opportunities for the Project components will be considered. For example, removal of equipment for use by a third party, or use of equipment left in situ for alternative uses. Where no feasible or practicable alternatives can be identified, the Project components will be decommissioned.
Infrastructure above the seabed will be designed for full removal, however a full assessment prior to decommissioning will be undertaken to assess if full removal is the most environmentally feasible option.
Although it is technically viable to remove subsea trunklines, they are likely to be flushed and left in place to limit impacts to the marine environment associated with the removal operation.
Typically the decommissioning activities will include:
• Decommissioning production facilities
• Flushing subsea facilities including pipelines, flowlines, manifolds and risers
• Decommissioning, suspension, plugging and abandoning wells
• Removal and/or leaving in situ of facilities as agreed with the regulator.
The decommissioning requirements for the Project will be agreed with the regulatory authorities closer to the time of decommissioning. A Decommissioning Management Plan will be developed and will consider:
• Condition of the marine and terrestrial environment
• International, National and State regulatory legislation and standards at the time of decommissioning
• Health and safety legislation and standards
• The land zoning plans and future land use options.
1.5 Development TimelineMajor Project components include Front End Engineering Design (FEED) in 2010, Final Investment Decision (FID) and construction commencing in 2011, and production scheduled to commence in 2016. The timing for the commencement of construction at Ashburton North is subject to the achievement of State and Commonwealth Government approvals, and internal approval processes. An indicative schedule for the Project is provided in Figure 1.3.
Wheatstone Project Executive Summary
10 | Chevron Australia Pty Ltd
1.6 Project ObjectivesThe Project is aimed at bringing gas to international and domestic markets. It will be developed as a multiple-train gas project that will process gas for Chevron as well as third-party gas owners in the Carnarvon Basin and potentially other areas.
The primary objectives of the Project are to:
• Commercialise the hydrocarbon resources within Petroleum Titles WA-253-P, WA-17-R, WA-356-P and WA-16-R, and efficiently and reliably recover these resources
• Create a processing hub to facilitate development of additional offshore gas resources in the Carnarvon Basin and other areas, from both Chevron operated Petroleum Titles and those operated by other parties
• Provide an acceptable return on investment
• Provide an alternative and reliable source of LNG to international markets along with an additional secure source of domestic gas for the local market
• Manage all environmental, health, security and safety issues with Chevron Corporation standards and recognised global industry standards in mind.
1.7 Site Selection and Development Alternatives
A detailed evaluation of development alternatives concluded that a tie-back to a new on-shore LNG facility located at a greenfield site somewhere between the Burrup Peninsia and North West Cape was preferred. The reasons for this decision were:
• A new facility provided the potential for a strategic development for discoveries in the West Carnarvon Basin
• A new development “hub” would facilitate synergies with other proponents
• A new facility was not constrained by other proponents either technologically or spatially
• A new facility could be developed with proven technology and linked back to the domestic gas market
• Environmental and cultural heritage impacts could be reduced relative to third-party locations.
Chevron investigated a number of alternative locations for the on-shore LNG plant and associated facilities. In addition to its community engagement, Chevron made the final decision on site selection in close consultation with the Australian Commonwealth and Western Australian State
Wheatstone Project ScheduleActivity 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Major Milestones
Environmental Approval Process
Referral
Scoping Document
Draft EIS/ERMP Public Display
Environmental Approval Decision
Front End Engineering & Design
Construction and Commissioning
Dredging Program
Upstream Facilities
Downstream Facilities
Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Activity 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Select Develop Execute Operate
Select Site Commence FEED FID 1st LNG Train 1 1st LNG Train 2
Figure 1.3: Indicative Schedule for Development of the Wheatstone Project (Trains 1 and 2)
* Dates are subject to change as the Project develops. ** Project detailed design to continue after FID
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Chevron Australia Pty Ltd | 11
Governments. This process, which included consideration of matters of National Environmental Significance (NES), identified Ashburton North SIA as the preferred site, with the following key attributes:
• The least relative environmental and social constraints
• Heritage and third-party constraints but with lower relative risks than other sites
• An inundation risk attributed to low ground levels that can be mitigated by engineering solutions
• Comparable in cost to other sites, but lowest in the uncertainty range.
Although the “No Action” alternative would eliminate any environmental impacts associated with the proposed action, the need for additional supplies of natural gas would remain. The Project is considered to have significant economic advantages based on the volume of reserves discovered. Not developing would therefore result in the loss of significant socio-economic benefits for the Pilbara region, the State of Western Australia, the Commonwealth of Australia and Chevron.
1.8 Legal Framework for the ProposalThe Project will be located in both State and Commonwealth waters. The primary environmental legislation relating to its approval is the EP Act (WA) and the EBPC Act (Cth). The Draft EIS/ERMP has subsequently been prepared in accordance with the requirements of both the EP (WA) and EPBC (Cth) Acts.
In addition to these requirements, Chevron has considered both Australian and international guidance and regulations along with Chevron’s own policies and standards in the development of the Draft EIS/ERMP. Compliance with relevant environmental and social performance standards and Draft EIS/ERMP commitments will be implemented through the Wheatstone Environmental Management Program.
Safety requirements are addressed separately in accordance with National Offshore Petroleum Safety Authority (NOPSA) requirements and the State equivalent, Resources Safety.
1.9 Stakeholder ConsultationChevron is undertaking a transparent stakeholder and community engagement process in the development of the EIS/ERMP. The engagement process is consistent with the Interim Industry Guidelines to Community Involvement and the International Association for Public Participation Guidelines for best practice in Social Impact Assessment.
The stakeholder consultation strategy is aligned with Chevron’s corporate values, which drive the company’s business to be conducted in a socially responsible and ethical manner. Consultation includes government agencies, non-government organisations, Indigenous organisations, Onslow residents, tourists visiting Onslow and the private sector.
The aim of the ongoing consultation for the Project and the associated impact assessment process is to:
• Provide a forum for stakeholders to participate, deliberate and contribute in a meaningful way to discussion; to raise concerns, and to provide suggestions and advice on the Project
• Provide opportunities for stakeholder input and feedback throughout the impact-assessment process in order to inform Project decision-making
• Broaden Chevron’s knowledge of the issues, concerns and opportunities that may arise in relation to the Project to enable the development of effective mitigation and enhancement strategies
• Allow Chevron to interact with stakeholders and find the best ways to increase benefits from the Project and reduce potential adverse impacts
• Capture and address stakeholder issues and concerns during development of the EIS/ERMP
• Consider stakeholder views in planning future consultation.
1.10 Existing Environment
1.10.1 Local Marine Environment
The marine waters in the Project area are characterised by variable levels of turbidity influenced by wind, tides and weather. These waters sometimes have naturally higher levels of turbidity due to cyclonic activity. Sediments in the east of the offshore field area are uniformly clayey, silty, medium sand with shell and coral fragments. In the north, west and south-west of the offshore field area, sediments are slightly finer in texture. The nearshore area is broadly characterised by silt and sand sheets overlying limestone. High levels of sediment are discharged from the Ashburton River.
No ecologically isolated, sensitive or unique benthic habitats have been found in the Project area. All benthic habitats in the Project area are widespread, and found throughout the nearshore and offshore Pilbara marine environment. Benthic Primary Producer Habitat (BPPH) include: reefs and shoals supporting hard corals and
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macroalgae; patchy and low cover seagrass beds; and mangrove stands fringing creeks and lagoons. However, the dominant habitat, in terms of spatial extent, is unconsolidated sediment without vegetation cover.
EPBC Act (Cth) listed, threatened and migratory species of birds, marine mammals, reptiles and sharks/rays are known to be present in the nearshore and offshore Project area. These include Dugongs, sawfish and marine turtles. Humpback Whales are known to utilise the waters of the region between May and November. Marine turtles are present in the Project area and nest on offshore islands including Serrurier, Thevenard, Bessieres, Locker and Ashburton (Figure 1.1) during the summer. Low density nesting has been observed on the beach 4 km west of the onshore Project area but not in front of onshore infrastructure; beaches at the Ashburton North SIA site are unsuitable for nesting as they are inundated by spring tides.
The Project area is located in the Ashburton River Catchment where the surface water environment is characterised by local rainfall, runoff from upstream catchments and tidal variation. The Ashburton River, which has a shifting nature, makes a significant contribution to sediment deposition along the coast, particularly when it is in flood. Net alongshore sediment transport is generally considered to be from west to east and the entrance bar at Hooley Creek is dynamic.
1.10.2 Local Terrestrial Environment
The area surrounding the onshore component of the Project is dominated by topography consisting of undulating dunal systems, alluvial/colluvial plains and low-lying coastal systems. Areas of low relief are associated with the samphire and supra-tidal salt flats, claypans, tidal creeks and mangroves. There are three major identifiable soil groups/types encountered in the shallow soil profile for the Ashburton North and surrounds of the Shared Infrastructure Corridor study area. Although some metal concentrations exceed the relevant ecological threshold values, these metals are naturally occurring in the area and are not considered to pose an adverse risk to human health or ecological receptors. Potential acid sulfate soils (PASS) are present at shallow depths with a thickness ranging between 0.2 m and 3.5 m. They exist predominantly along the north-eastern extent of the Ashburton North SIA.
Ashburton North is predominantly a groundwater discharge zone associated with the regional Carnarvon Basin successions. The groundwater environment is characterised by shallow water table settings and mostly saline to hypersaline groundwater environments. The water table is closely linked with topography, with groundwater flow being a reflection of the surface water catchments.
Some comparatively high dissolved metals concentrations were evident, but these are considered to be representative of background conditions and are commensurate with the accumulation of salt in the local groundwater environment.
The Ashburton North SIA is located in the Ashburton River Delta, which is characterised as a coastal flood plain. The surface water characteristics are influenced by three main components: tidal inundation by seawater, localised rainfall events and flooding of the Ashburton River. When the Ashburton River is in flood, its flood waters will spill onto the floodplain and may significantly add to the stream flow in the drainage lines of the Project area. Surface water quality at Ashburton North is a mixture of tidal seawater and runoff from local catchments.
A total of 30 vegetation units were identified, which were generally defined as very good to excellent vegetation condition. However, several vegetation units were heavily infested with weeds. Most of the vegetation units are representative of vegetation in the locality, or are substantially degraded by the invasion of buffel grass (Cenchrus ciliaris), and are therefore considered to be of low conservation significance. Five of the 30 vegetation units are identified as having some degree of local significance, but no Threatened Ecological Communities listed under the EPBC Act (Cth) or the Western Australian Wildlife Conservation Act 1950 (WC Act) occur. Additionally, no Priority Ecological Communities listed by the Western Australian Department of Environment and Conservation (DEC) were identified.
Three Priority flora species (Eremophila forrestii subsp. viridis [Priority 3], Atriplex flabelliformis [Priority 3] and Triumfetta echinata [Priority 3] as listed by the DEC) were identified within the Project area. There was also one Threatened Flora species, Eleocharis papillosa (Dwarf Desert Spike-rush), listed as Vulnerable under the EPBC Act (Cth) and as a Priority 3 flora species, and an additional Priority flora species (Abutilon uncinatum ms. [Priority 1]) found outside the Project area.
A total of 128 vertebrate fauna species were recorded, comprising 47 reptile species, four frog species, 60 bird species and 17 mammal species. Six fauna species of conservation significance, or secondary signs of these species, and three introduced mammal species were recorded. Surveys also determined that the Project area and surrounds do not support important numbers of migratory waterbirds. No short-range endemic invertebrate fauna taxa were identified, while 59 taxa of zooplankton and 82 taxa of macro-invertebrates were recorded in a study of the ephemeral claypans.
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Surveys for subterranean fauna recorded no troglobitic fauna, and two species of stygofauna. It was determined that it was unlikely that those stygofauna taxa are only restricted to the study area. Therefore, the study suggested that a diverse or significant stygal community does not occur in the aquifers beneath the study area and surrounds.
Existing dust at Ashburton North is primarily wind-blown. Minor anthropogenic sources of dust include tourist or local vehicles visiting the area along the Old Onslow Road near the Ashburton River and the Old Onslow heritage area. Dust emissions generally exhibit a marked seasonal trend, related to the influence of the Pilbara’s wet and dry seasons.
Minor sources of anthropogenic gaseous emissions do exist. However, these are considered inconsequential to the background air quality. Some of the minor emission sources include motor vehicles in the surrounding area of Onslow and some small-scale power generation facilities at Onslow and Onslow Salt.
1.10.3 Socio-economic and Cultural Environment
Onslow is located 1,386 kilometres north of Perth, in the Shire of Ashburton within the Pilbara region of Western Australia. It has a population of approximately 600, and a significant Indigenous population of around 37 per cent. The Thalanyji people are the native title holders for the onshore area around Onslow including the Ashburton North SIA. With development of the Project and other industrial operations in coming years, Onslow is expected to undergo significant change in population and socio-economic way of life.
Onslow is close to a number of natural resources and has a diverse economic base including fishing, salt, oil and gas, tourism and pastoral activities. Commercial fisheries include the Onslow Prawn Managed Fishery, Pilbara Managed Trap Fishery, North Coast Blue Swimmer Fishery, Pearl Oyster Managed Fishery, Pilbara Line Fishery, Mackerel Managed Fishery, Specimen Shell Managed Fishery and the Marine Aquarium Fish Managed Fishery.
Fishing is also one of the key recreational activities in Onslow and the town’s proximity to the ocean and the Ashburton River attracts visitors in pursuit of recreational coastal activities. Many visitors stay for three to four months during the winter and camp along the Ashburton River. Visitors also use heritage trails and tours highlighting the town’s rich history. For members of the Aboriginal community, hunting and gathering remains an important recreational and cultural activity. Although some hunting
and gathering takes place across the proposed Project area, it mostly occurs along the Ashburton River and to the east of the river.
Onslow was originally settled in 1883 and the Old Onslow Townsite is registered as place 3444 on the Western Australian Register of Heritage Places. The Heritage Council of Western Australia conservation area consists of a town site area, the line of a former tramway and jetty area. The site is also listed on the Shire of Ashburton’s municipal inventory and is highly valued by Onslow residents. Aboriginal heritage surveys of the proposed plant site and surrounding areas have identified sites containing shell scatters, shell middens, evidence of grinding activities and artefacts. No ethnographic sites were identified.
Despite Onslow’s range of economic and recreational activities, it is more socio-economically disadvantaged than the broader Shire of Ashburton and Pilbara region. Its remoteness also means social infrastructure and community services are limited. Neighbouring regional centres such as Exmouth and Karratha are approximately 350 km away and most community services are either provided by larger neighbouring towns, or flown in from elsewhere. For example, Onslow’s hospital is staffed by nurses, visited by a rotation of general practitioners three times a week, and supported by specialist services flown in periodically.
1.11 Emissions from the Project Emissions, discharges and wastes will be generated during the life of the Project. Identification of the potential sources and types of emissions and wastes has enabled an assessment of the volume and toxicity of each potential waste produced. This has also enabled the identification of areas where volumes could be reduced.
1.11.1 Greenhouse Gas and Energy Efficiency
Prior to commencing feasibility studies a high-level approach was taken in addressing issues of environmental importance. This included requirements to reduce greenhouse gas (GHG) emissions through design.
The following actions have been taken to manage the Project’s GHG emissions:
• Selection of aero derivatives for gas turbines
• Selection of waste heat recovery units offshore from compressor gas turbines
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• Selection of LNG process train technology and size so as to enable the consideration of aero derivative gas turbines
• The use of inlet air humidification (cooling) on the LNG process gas turbines in order to optimise gas turbine energy efficiency
• Waste heat recovery from the LNG compressor gas turbine exhausts to meet routine process heat requirements in the onshore gas processing facility
• Waste heat recovery from the gas turbine exhausts of the main generators on the offshore platform to meet specific heating requirements
• The use of sophisticated process control systems for continuous optimisation and integration between various components of the gas processing system
• The capture and use of energy recovered from the pressure let down in the liquefaction section of the onshore gas processing facility.
Estimates of GHG emissions have been compiled in a manner that is consistent with methodologies prescribed by the Commonwealth National Greenhouse and Energy Reporting Act 2007. These emissions estimates indicate that the Project could emit greenhouse gases with the global warming potential equivalent of up to 9.9 MTPA of carbon dioxide (a standard comparison measure).
Figure 1.4 shows the GHG emissions intensity associated with LNG processing for LNG projects currently in production as dark grey bars. The medium grey bars show the estimated LNG processing emissions intensity for the two Australian LNG projects that are currently under construction. Estimated LNG processing emissions intensity for other Australian LNG projects that are currently undergoing environmental impact assessment are represented by light grey bars. The estimated LNG processing emissions intensity of the Project is shown in dark blue.
Figure 1.4: Benchmarked Greenhouse Gas Emissions Intensity
Refer to Section 4.2.6 for further details on benchmarked GHG emissions performance including associated assumptions.
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Where data on the emissions intensity of the associated gas production operations is available it is presented as an additional white bar. Projects where publicly available data on gas production emissions is not available are indicated with a blue circle.
A number of opportunities to further reduce the Project’s GHG emissions have been identified and will be evaluated further during ongoing Project design and engineering.
1.11.2 Atmospheric Emissions
The Project is located in a remote area in the north-west of WA with limited man-made sources of atmospheric emissions. Existing industrial sources of air pollutants in the Onslow region are restricted to the Onslow Salt facility and other minor light industries in the Onslow township. Man-made emissions are anticipated to be low, compared to natural emissions. Due to the remoteness of the site there is limited data on existing air quality in the area. Chevron initiated a monitoring program in 2009 to collect data on the existing air quality in the region. This monitoring program is ongoing and is expected to continue through the construction phase.
The EPA and the DEC routinely apply National Environment Protection Measure (NEPM) standards and goals in WA. The EPA does not have current State-wide standards for ambient ground-level pollutant concentrations. However, the EPA has released a Draft State Environmental (Ambient Air) Policy, where it proposes that the NEPM standards (Schedule 1A and 1B) be applied across all areas of WA, excluding areas where a current environmental protection policy exists.
Predicted routine emissions modelling has predicted ground-level concentrations of nitrogen dioxide (NO
2),
ozone (O3), sulfur dioxide (SO
2) and a particulate matter of
10 microns or less (PM10
). All modelled emissions were well below NEPM guideline values: less than 5 per cent of the values at Onslow. The emissions during construction were considered to be transitory (short-term and generally mobile). The key emission during this phase is dust, which is further discussed in the Terrestrial Risk Assessment and Management section of this Executive Summary.
1.11.3 Light
1.11.3.1 Offshore Facilities Light EmissionsThe main sources of light during installation and dredging will be various vessels, drilling mobile offshore drilling units and installation platforms. Typically, white light such as fluorescent, metal halide and halogen is used on a 24-hour basis. During commissioning and operations, the main sources will be vessels, platform facility lighting and the flare system. The design reduces light spillage and the platform location is more than 140 km from the nearest mainland. The site is not near any known critical aggregation areas for cetaceans, turtles or birds. The Wheatstone Platform will not be visible from the mainland.
1.11.3.2 Onshore Facilities Light EmissionsThe Project will produce light emissions during construction, commissioning, operations and decommissioning. This light will be generated by Project activities, such as flaring and by lighting systems that provide safe areas of operation.
Light spill along the beach and dunes south-west of Entrance Point has been modelled and predicts illuminance along the dune crest peaking at 0.2 lux (the standard unit to measure illuminance). Light spill across the beach will generally be less than 0.15 lux (Figure 1.5).
From the results of the viewshed analysis and the lighting study it can be inferred that, under normal operating conditions at night, the onshore facility will be seen from Onslow as a dull glow on the horizon. Flaring events may be more visible but will occur infrequently. The PLF and MOF will have low levels of illumination. Light emissions are not expected to significantly impact the nesting productivity of turtles, discussed further in the Marine Risk Assessment and Management section, discussed further in Section 1.12.2
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1.11.4 Noise
The Pilbara region is characterised by mining and industrial centres separated by large distances. Regional towns are sparsely scattered throughout the Pilbara and tend to be hundreds of kilometres apart. There are also many pastoral stations scattered throughout the region. These properties are large and the homesteads are usually isolated from anthropogenic noise sources. Given the vast distances between receptors and noise sources in the Pilbara region, background noise is often very low. Continuous onshore noise monitoring was conducted over a two-week period at five sites considered by the Onslow community to be sensitive receptors. The Project will comply with the Environmental Protection (Noise) Regulations 1997 during operations. Potential environmental impacts relating to noise are discussed in the Risk Assessment and Management section.
1.11.4.1 Potential Onshore Noise Emissions during Construction
Onshore and nearshore foundation works will include the use of pile drivers, which may present significant potential noise source for Onslow. Up to ten pile drivers could be operating at the processing facility site for up to 18 months, while pile driving for construction of the export jetty and the MOF may involve two pile drivers for up to 14 months. Modelled noise emissions for the onshore processing facility predict that pile driving, under worst case conditions, may generate sound pressure levels in Onslow of 31 dB(A) (adjusted to 41 dB(A) if pile driving noise is impulsive. Modelled predicted noise contours for piling activities are shown in Figure 1.6.
Figure 1.5: Light Intensity
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1.11.4.2 Potential Onshore Noise Emissions during Operations
During the operations phase, sound pressure levels are likely to be dominated by the gas turbines, compressors and flares. Predicted noise contours for routine operations are shown in Figure 1.7. Non- routine operations represent approximately six per cent of plant availability. During upset conditions up to six flares (worst case scenario) may operate to maintain the facility within safe operational guidelines.
1.11.5 Marine Discharges
1.11.5.1 Offshore Facilities DischargesThe offshore facilities will discharge produced water, cooling water, brine, deck drainage, treated process water and treated wastewater. Wastewater (sewage and putrescible organic matter) will be treated in accordance with the International Convention for the Prevention of Pollution from Ships (MARPOL 73/78, Annex IV).
Produced water will be treated prior to being discharged to comply with the Offshore Petroleum and Greenhouse Gas Storage Act 2006. Potentially contaminated runoff and wastewater will be collected via a drainage system prior to treatment.
Figure 1.6: Predicted Noise Contours for Pile Driving During Construction
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Discharges from the facility will undergo a range of degradation and dispersion processes. Direct dilution will occur in two phases: rapid near-field and slower far-field. The first phase is impacted by the discharge velocity / momentum and density differences between the discharge and surrounding water body. The second phase is far-field mixing which rely on natural processes of winds and waves inducing dilution. Distribution is determined by tidal flows, wind velocity and regional circulation patterns.
1.11.5.2 Onshore DischargesTreated sewage and domestic grey water generated during the operations phase will be discharged through one of the nearshore ocean outfall pipelines. Volumes for discharge may range up to 435 m3 per day. Treated domestic effluent may achieve a quality suitable to be recycled for dust suppression and vehicle wash water.
During operations, process waters will include reverse osmosis brines and filter backwash water, stormwater
contaminated with hydrocarbons, clean stormwater, hydrostatic test water, and produced water from offshore facilities. This water will be treated through different parts of the plant, depending upon the source and the level of contamination.
1.11.6 Waste Production and Management
1.11.6.1 Construction WastesDuring the construction phase a waste management area will be constructed to handle and segregate wastes prior to reuse, recycling or disposal. These wastes will be segregated by type and toxicity. The wastes will be stored in accordance with Australian standards and will be covered and bunded, where appropriate.
A review of waste disposal options is currently underway. Wastes that are not reused, recycled or managed on site will be disposed of at an appropriately licensed facility, discussed further in the Waste Management section, discussed further in Section 1.11.6.3.
Figure 1.7: Predicted Noise Contours During Routine Operations
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1.11.6.2 Operation Wastes
Wastes generated during the operations phase will be mainly related to spent process chemicals and consumables. Relatively minor quantities of “domestic” wastes will be generated after the completion of construction activities due to the significant reduction in onsite personnel. A waste management area is proposed for the operational phase, which will operate as described in this section.
Recyclable materials generated during the operations phase consist mainly of ferrous and non-ferrous scrap metal. Decontaminated inert wastes, such as ceramic balls and molecular sieves, form a significant portion of wastes that are uneconomic to recycle.
Controlled wastes during the operations phase will include a range of process chemicals and materials. These wastes will be appropriately transported (by a licensed carrier) for disposal at a facility licensed to handle controlled wastes.
1.11.6.3 Waste Management Waste management in the Pilbara region is currently limited to:
• Shire operated Class II landfill disposal. Shire operated Class II landfills are generally unlined landfills that can accept inert wastes, putrescible wastes, compostable organics, bio-solids and certain special wastes, such as clinical waste. Class II landfills cannot accept controlled waste. Chevron is not intending to use these sites
• Transport of waste to Perth for recycling, treatment and/or disposal
• Disposal of waste to private, third-party, waste management service providers.
All solid wastes generated offshore during construction and operations will be transported to shore for onshore disposal. The only exception to this would be putrescibles organic matter and sewage. These will be treated in accordance with MARPOL requirements.
1.11.6.4 Local FacilitiesA landfill south of the main town of Onslow was described as “nearing the end of its operational life” in the 2003 Onslow Structure Plan. Since this time, the Shire of Ashburton has employed consultants to identify new sites for a potential landfill. These sites are currently undergoing further investigation. Chevron will review the preferred location and construction of the planned landfill to determine if it is appropriate for use for the Project.
1.12 Environmental Risk Assessment and Management
1.12.1 Overview
The Pilbara region is environmentally varied and sparsely populated. It is characterised by a tropical/arid climate. To assess the existing marine, terrestrial and social environments of the Project area, a variety of detailed scientific surveys and studies have been undertaken. The information collected has provided a baseline with which to inform the assessment of potential impacts to marine, terrestrial and socio-economic and cultural environments resulting from Project development. Following guidance from the EPA, a risk assessment was conducted on each relevant aspect for each of the environmental factors (where applicable).
The impact assessment methodology undertaken during the assessment process provides a robust process for:
• Identifying potential interactions and impacts
• Predicting the consequence of an impact
• Predicting the likelihood of the consequence occurring
• Determining the potential level of inherent risk
• Developing mitigation and/or management measures
• Determining the potential level of residual risk
• Monitoring and reporting the effectiveness of the proposed mitigation measures.
A number of factors, identified during Scoping, were considered for marine, terrestrial and socio-economic and cultural environments. The sections below identify the residual risk, as defined in the draft EPA guidance, for each factor and discuss the predicted environmental outcome.
Risk-assessment summary tables can be found at the end of this Executive Summary. These detail the risk rankings assigned to each aspect and factor for both the construction and operations phase of the Project. They include a summary of potential impacts, mitigation and management measures and relevant assumptions. For details on the risk ranking procedure, including consequence and likelihood definitions specific to each factor, refer to Chapter 7, Impact Assessment Methodology and the relevant impact assessment chapters.
It should be noted that proposed Outcome-based Conditions (OBCs) have been developed for those factors assessed as either having a high residual risk, or which otherwise have a high conservation value. A set of Statutory Environmental Management Plans
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(EMPs) will be finalised to demonstrate to the EPA and Department of the Environment Water Heritage and the Arts (DEWHA) how Chevron and its contractors will maintain an acceptable standard of environmental performance in areas of medium or high risk throughout the Project. Also, prior to Project construction, a set of Subsidiary EMPs will be developed for relevant work scopes and activities, which detail the specific mitigation measures and management actions which will be implemented to limit Project related impacts.
1.12.2 Marine Risk Assessment and Management
1.12.2.1 Water and Sediment QualityThe Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand (ANZECC/ARMCANZ) guidelines criteria for turbidity may be exceeded in nearshore waters during dredging and construction. Turbidity related to construction of the MOF and PLF may result in the persist during and possibly for a few hours after an activity.
Areas around the PLF and the MOF will be subject to ongoing disturbance and may be unable retain the requirements necessary to sustain a high Level of Environmental Protection (LEP) as defined by the Pilbara Coastal Water Quality Consultation Outcomes. It is proposed that a Moderate LEP be assigned to the nearshore and the offshore dredge material placement site D which occurs in State Waters. It is also proposed that a Moderate LEP be assigned to the waters within 1 km of the Project’s nearshore infrastructure. It is further proposed that a Low LEP (200 radius mixing zone) be assigned to the discharge locations, one near the PLF, the other offshore in 20 m depth of water (note that the location of outfalls is indicative at present).
A minor increased load of nitrogen and phosphorus from the nearshore outfall is anticipated and unlikely to result in significant eutrophication effects to coastal waters. A substantially increased load of nitrogen and phosphorus from the offshore outfall is anticipated, although the relative increase offshore is minimal given the high natural background turnover in the open ocean. Water quality criteria including salinity, dissolved oxygen, temperature, nitrogen and phosphorus are predicted to remain close to background levels outside of the designated mixing zones and in accordance with related ANZECC Guidelines. The residual risk from the Project to water and sediment quality has been assessed as High.
1.12.2.2 Benthic Primary Producer HabitatNo reefs or shoals will be destroyed by the dredging program; the habitat ‘hard substratum’ will remain intact. Most coral reefs in the Project area are not predicted to suffer discernible levels of damage. However, up to 50 per cent of corals at Saladin Shoal, End-of-channel Shoal and a small reef northwest of Ward Reef, which are located closest to the dredge footprint, may suffer mortality. These impacts are unlikely to recover within five years. Nevertheless, recovery in the long term is highly likely because many adult coral colonies will survive and larvae will continue to arrive from unaffected source reefs up-current. Severe coral damage, defined as damaged coral assemblages unlikely to recover within five years, will be restricted to reefs and shoals closest to the dredge footprint.
Small reductions in the abundance and distribution of seagrasses is also anticipated, although rapid recovery is predicted once the dredging program ceases. A moderate proportion of the macroalgae dominated habitat in the Project area is predicted to be severely damaged as a results of the dredging campaign, but recovery is predicted in the long term. This habitat is widespread throughout the region. The construction of the Project plant and access road will result in the loss of intertidal algal mats and samphire habitat from the Hooley Creek ecosystem. The residual risk from the Project to BPPH has therefore been conservatively assessed as High.
1.12.2.3 Marine FaunaHumpback Whales, Dugongs, dolphins, sawfishes, marine turtles and other threatened and migratory species are known to occur, at least seasonally, in the Project area. However, it is highly unlikely that Project activities will have a measurable effect on local populations of these taxa. No critical habitat for threatened or migratory species occurs in the Project area and thus critical habitat will not be directly and permanently impacted by Project activities. Indirect impact to some seagrass beds, potential feeding grounds for Dugongs, is predicted, but disturbance will be temporary and recovery rapid after the cessation of dredging. Although some activities, such as dredging and piling, are likely to result in the disturbance of individuals of some species, these activities will not result in population levels impacts. Light spill modelling suggests that turtles will not be deterred from nesting on islands in the vicinity of the Project. Some nesting turtles may be displaced from the lower-dune area to the higher-dune area of the Ashburton River Delta beach, although nesting productivity is unlikely to be affected. The residual risk from the Project to marine fauna has therefore been assessed as Medium.
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1.12.2.4 Coastal ProcessesAlthough coastal processes hold no specific conservation value on their own, impacts causing change in coastal processes have the potential to impact the conservation values of nearby mangrove and algal mat communities. The main risks to coastal processes will result from the installation or nearshore and onshore coastal infrastructure. The proposed MOF breakwaters will interrupt the wave-driven alongshore sediment transport pathways, enhancing local shoreline variability and requiring sand management. In the long term, accretion is expected on the western side of the MOF breakwaters, but the direction of transport reverses slightly during winter months. In addition, tropical cyclones may transport large volumes of sediment in either direction. The change in sediment transport is expected to slow the recovery of beaches between the MOF and Beadon Creek after an erosion event, most likely caused by a tropical cyclone. The residual risk from the Project to coastal processes has therefore been conservatively assessed as Medium.
1.12.3 Terrestrial Risk Assessment and Management
1.12.3.1 Soils and LandformsThe implementation of appropriate avoidance and management measures during construction and operational earthworks reduces the risks associated with exposure of PASS, such as acidity and mobilisation of heavy metals, and the occurrence of soil erosion. Potential spills and leaks are also considered to pose a low risk; they would be rapidly detected and minor, resulting in localised consequences only. The residual risk from the Project on soils and landforms is Low.
1.12.3.2 GroundwaterImpacts to groundwater may occur from seepage of decant (seawater) from the onshore dredge placement area if the preferred option for disposal of dredge material offshore is not undertaken. The predicted impacts to the water table environment are local effects that are not likely to substantially propagate beyond the processing facility footprint. The residual risk from the Project on groundwater is Medium.
1.12.3.3 Surface WaterThere is a potential for impacts to surface water to occur through increased sediment loads and seepage water volume to drainage lines and creeks during construction earthworks, onshore dredge material placement (should this option be undertaken) and thereafter from unstable landforms. To mitigate these risks, a number of engineering solutions have been proposed. The predicted impacts to the surface water environment linked to Project are local
effects that should not propagate beyond the sub-catchments of the Ashburton River Delta. With the inclusion of the risks associated with the potential onshore dredge placement option, the Project poses a Medium level of residual risk.
1.12.3.4 Flora and VegetationThe residual risk from the Project on flora and vegetation is Medium, which is strongly based on the clearing of approximately 3100 ha of vegetation (maximum clearance scenario). A proportion of this will be rehabilitated immediately after completion of construction of the domgas pipeline. Approximately 546 ha of vegetation with high local conservation significance will be cleared. Disturbance of three known Priority 3 species (E. forrestii subsp. viridis, A. flabelliformis and T. echinata) may be necessary. Flora and vegetation present in the Project area are generally widespread and well represented in the surrounding region.
1.12.3.5 Terrestrial FaunaSix threatened fauna species or signs of these species were recorded within the study area. However, these are all highly mobile (with the exception of the Western Pebble-mound Mouse) and it is expected that the majority of individuals will move away from the Project area at the commencement of the construction phase. No species listed under the EPBC Act (Cth) are likely to be affected by the Project and it is considered highly unlikely that the conservation status of any fauna species will be affected.
The Project will require the “maximum-clearance-scenario” clearing of up to 3100 ha of terrestrial fauna habitat, a proportion of which will be rehabilitated immediately after completion of construction of the domgas pipeline. Removal of suitable habitat is likely to be the main impact on the six threatened terrestrial fauna species recorded within the Project area. All of the terrestrial fauna habitats to be cleared in the Project area are well represented in the locality and wider region, and are not of elevated conservation significance. The Project is therefore considered to have an overall Low residual risk to terrestrial fauna.
1.12.3.6 Subterranean FaunaDue to the absence of troglofauna, and the low likelihood of any communities being present, the Project will not have any impact upon their populations. Disturbance to stygofauna is not expected to have an impact to species on a population level and it is unlikely that any stygal species would be restricted to the Project area. The residual risk from the Project to subterranean fauna is Very Low.
Wheatstone Project Executive Summary
22 | Chevron Australia Pty Ltd
1.12.3.7 Air QualityThe location for the proposed processing facility is currently being considered as a potential ‘processing hub’ and, as such, there is the potential for additional gas processing facilities to be located at the Ashburton North SIA. Modelling was conducted to provide an indication of the reasonably foreseeable potential ground-level concentrations of pollutants with these additional gas processing facilities. Normal and non- routine emissions from the proposed Project operations are not expected to cause any significant air quality impacts within the study area. It is also not expected that any of the pollutants studied will exceed the relevant air-quality standards. Being mindful that further scientific work is required to determine uncertainties for modelling depositions, it is also determined that the deposition of NO
2 from the proposed gas processing facility would
be insignificant. No discernable impacts on identified receptors are expected.
After the implementation of controls and with consideration of mitigating factors, the impacts from dust are likely to affect the surrounding environment on a very localised scale, primarily during the site vegetation clearance activities during site preparation. The residual risk from the Project to air quality is Low.
1.12.4 Social Risk Assessment and Management
1.12.4.1 European Cultural HeritageThere will be some Project impacts on European cultural heritage as a result of construction activities. However, all impacts on European cultural heritage sites and artefacts will be managed in accordance with relevant legislative requirements and the Old Onslow Townsite (3444) Development Impact Mitigation Plan, the provisions of which will be prepared in consultation with the Heritage Council of WA, the Shire of Ashburton and the Western Australian Maritime Museum.
1.12.4.2 Aboriginal Cultural HeritageThere will be some impacts on Aboriginal cultural heritage values due to disturbance of certain identified Aboriginal heritage sites. Chevron will manage all impacts to these sites and any future impacts on Aboriginal cultural heritage values with the objective that any such impacts do not breach the Aboriginal Heritage Act 1972 (AH Act [WA]). This may include obtaining all necessary Section 18 Notices. These measures will be undertaken with the objective of meeting the environmental protection objective for Aboriginal heritage.
1.12.4.3 Local Fishing and PearlingThe Project will affect only a small proportion of the available commercial and recreational fishing areas in the region. Target fish species are well-represented in the region and permanent changes as a result of the Project should have negligible effect on fish abundance. Some impacts, such as those resulting from dredging or temporary exclusion zones, will only occur for a relatively short period of time. Other impacts, such as permanent exclusion zones around the LNG Plant, Multi User Facilities and Common User Infrastructure, will have an ongoing effect in the area. However, the effect should be localised.
There is potential for recreational fishing by the Project workforce to impact on commercial and recreational fishing in the area. There may also be permanent loss of access to Hooley Creek, a valued recreational fishing area. Even though it is a small area and there are numerous alternatives, it is culturally important to the Onslow community and tourists.
Overall, there is likely to be some disturbance to recreational use of the marine environment and there is likely to be some reduced access to valued recreational fishing areas. However, similar and superior recreational fishing locations exist in the area and pursuit of the sport remains viable. It is possible there will be some impacts on commercial fishing. However, Chevron will liaise with holders of commercial fishing licenses to manage any impacts identified. The residual risk from the Project on local fishing and pearling is Medium.
1.12.4.4 Disturbance to Other Recreational UseThere will be some disturbance to other recreational use through exclusion zones, changed access, and minor impacts on tourist accommodation. However, similar recreational locations exist in the area and all current recreational activities can continue. In addition, there may be some additional recreation opportunities created through social investment funding.
The Project itself will have a limited direct and permanent impact on tourist accommodation. It is possible that the Project will induce impacts on tourist accommodation and hence affect the ability of tourists to enjoy the area for recreation. However, if this occurs it will be an indirect impact beyond the scope of Chevron’s responsibility.
The residual risk from the Project on disturbance to other recreational use is Medium.
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Chevron Australia Pty Ltd | 23
1.12.4.5 Public AmenityPublic amenity refers to how noise emissions, air emissions and visual impacts (including light emissions) impact on the amenity of a local area and affect the sense of well-being and quality of life of the community. For the purposes of this assessment, ‘public’ and ‘community’ includes Onslow residents, campers, tourists, other recreational users and nearby commercial land users. The overall residual risk from the Project on public amenity related to air emissions, noise emissions and visual impacts is Low.
Public Amenity: Noise
Noise from construction activities, including noise from activities such as earth moving and vehicle movements, is predicted to fall below guideline values. It is possible, but unlikely, that noise from pile driving could occasionally exceed noise levels at Onslow because its hammering sound is more intrusive than other noises. During operations, noise is only likely to be heard on a very localised and short-term scale and it is unlikely noise levels will be exceeded at Onslow. Noise will be managed as part of the Construction Environmental Management Plan (CEMP) and the Operations Environmental Management Plan (OEMP) and comply with government regulations. The residual risk from the Project on public amenity related to noise is Low.
Public Amenity: Air Emissions
Air emissions will generally consist of dust from vehicle movements and ground clearance, emissions from construction equipment, combustion of fuel gas in the gas turbines and flaring during upset or emergency conditions. The results of an air modelling assessment show that even under worst-case conditions air quality levels do not exceed guideline values. Air emissions will be managed as part of the CEMP and OEMP. The residual risk from the Project on public amenity related to air emissions is Low.
Public Amenity: Visual Impacts
The likelihood of changes to the visual character of the Project area is almost certain, due to the size of the facility. Table 1.1 lists the scale of the change at each viewpoint. A residual risk rating has not been assigned due to the subjective nature of values associated with visual amenity.
The offshore area that will be affected by the Project is very distant from any human settlements, and the gas-production facility would only be visible to passing ships. Under normal operating conditions at night, the onshore facility will be seen from Onslow as a dull glow on the horizon. Flaring events may be more visible but will occur infrequently, and the PLF and MOF will have low levels of illumination. A residual risk rating has not been assigned due to the subjective nature of values associated with visual amenity.
1.12.4.6 Health and WellbeingThere is no statutory requirement to assess environmental outcomes on health and well-being in the EIS/ERMP. However, the Project’s potential impacts on the health and well-being of the community will be assessed separately and will be evaluated by the Department of Health (DoH) and relevant experts facilitated through the DoH. In addition, Chevron will prepare safety cases for offshore, onshore and pipeline facilities and conduct qualitative and quantitative risk assessments of potential health and safety impacts to the public that could be posed by the Project. The Project will meet all legislative requirements and EPA guidelines relating to management of safety risks.
Table 1.1: Scale of Change to Visual Amenity
Viewpoint Scale of Change
Ten Mile Dam South accommodation village area Negligible
Ashburton River campsite Minor
Old Onslow Cemetery Moderate
Four Mile Creek beach Moderate
Four Mile Creek river mouth Minor
Nearshore recreational fishing area Moderate
Onslow town; Simpson Street Negligible
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24 | Chevron Australia Pty Ltd
1.13 Hydrocarbon Leaks and SpillsA condensate and diesel leak and spill impact assessment was conducted for the Project. Hydrodynamic modelling determined the probability of released hydrocarbons reaching sensitive receptors such as mangroves and turtle nesting beaches for a variety of potential scenarios. The severity of the resulting impact is determined largely by the location of the leak or spill relative to the receptors, characteristics of the hydrocarbons, mitigation and the range of possible environmental conditions such as currents, wind and temperature and the relative sensitivity of a receptor. Factors identified to be most sensitive are BPPH and Marine Fauna. However, while the impacts can be severe, the overall risk is greatly diminished by the very low probability of a major hydrocarbon leak or spill occurring. Even if a leak or spill occurred, it is expected that the majority of any released condensate or diesel would evaporate within approximately 48 hours. A number of design features and management measures proposed provide a high capacity for prevention and containment.
An assessment was conducted to examine the risk to different facets of the marine and terrestrial environment from a potential rupture of LNG processing facilities or storage tank failure. Since LNG is odourless, colourless, non-combustible, non-corrosive and non-toxic, it will not pollute land or water resources. If it is spilled, either on land or water, it will form a pool and vaporize rapidly, dissipating into the atmosphere with no residual trace, although there is the potential for a flammable vapour cloud to form that would pose the risk of fire or explosion if it comes in contact with an ignition source. Due to the safety implications of such events there are multiple controls in place to ensure that the potential for a release of LNG is extremely remote. A detailed assessment of the potential risk of a failure will be undertaken as part of the Facility Safety Case, which will completed prior to the commencement of operations. The proposed controls that will be incorporated into the design to mitigate against a release will be provided in the supplement to the EIS/ERMP.
1.14 Cumulative ImpactsA cumulative assessment was undertaken on the environmental and social factors examined in the Draft EIS/ERMP. The approach was via qualitative analysis and discussion, although quantification of air emissions and terrestrial footprint was included in the evaluation of cumulative effects where known, and therefore risk rankings were not undertaken. Table 1.2 shows the past, present and reasonably foreseeable future actions that were included.
The development of the Project as a 25 MTPA multi-train LNG facility reduces the potential requirement for future expansion of Chevron’s gas-processing facilities in the Ashburton North SIA. In addition, the development of the Project as an LNG hub will lessen the need for future LNG-related port developments in the Pilbara. Therefore, the potential for future cumulative impacts not included in this assessment is reduced. Cumulative effects arising from the Project and other actions included in this assessment are considered to be either not significant or manageable through the incorporation of appropriate mitigation measures. This includes environmental and social factors, which incorporate the Ashburton Delta mangrove system, offshore island ecological communities, significant local coral reef assemblages and air-shed quality.
1.15 Wheatstone Environmental Management Program
1.15.1 Overview
The Wheatstone Environmental Management Program is structured into three tiers of management which reflects the cascading but interconnected nature of documentation required for Chevron to meet its environmental obligations. Figure 1.8 illustrates the hierarchy of management in the Wheatstone Environmental Management Program.
Tier 1 of the program comprises Chevron Corporation’s OEMS as well as Chevron’s ABU Policy 530 which is central to the implementation of the OEMS in Australia.
Tier 2 of the Environmental Management Program comprises a set of OBCs and associated Statutory EMPs. The list of proposed Statutory EMPs is based on regulatory triggers from the EP Act (WA), EPBC Act (Cth), or the specific project guidelines that have been approved by the EPA and DEWHA for this Project.
Tier 3 comprises a set of Subsidiary Plans which are defined as those environmental plans which are required by and/or impose relevant legal obligations on Chevron under legislation, but are not legally binding under the Ministerial Approvals of the EIS/ERMP. Management plans which are required for Chevron internal purposes but which are not legally binding in their own right are also included in the list of Subsidiary Plans. Subsidiary Plans will not be submitted for Ministerial Approval with the EIS/ERMP.
Key Western Australian and Commonwealth legislation relating to onshore, nearshore (State waters) and offshore (Commonwealth waters) components of the Project have been considered in developing Tier 3 of the Environmental Management Program.
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 25
Figure 1.8: Wheatstone Environmental Management Program
Tier 1: Chevron OEMS
Tier 2: Wheatstone Environmental Assessment & Management Program
Tier 3: Wheatstone Subsidiary Plans
Chevron OEMS ABU Policy 530
EIS/ERMP OBCs
Statutory EMPs
Subsidiary Plans including Management Plans, Work Instructions and Procedures
Table 1.2: Projects (Actions) Considered for Cumulative Assessment
Development Description
Wheatstone Project Proposed 25 MTPA LNG plant, offshore infrastructure and associated development
BHP Billiton / Apache Macedon Gas Development (Macedon) Proposed 200 million standard cubic feet per day (MMscfd) domestic gas (domgas) plant and offshore infrastructure
Exxon Mobil / BHP Billiton Scarborough (North West Shelf) Pilbara LNG Processing Plant (Scarborough)
Proposed 6 MTPA LNG plant, possibly with additional trestle and LNG tanker berth, and offshore infrastructure
Thevenard Island Facilities Existing hydrocarbon production and storage facility
Tubridgi Gas Field and Griffin Gas Plant Discontinued field 36 km2 in area and two discontinued gas plants designated for removal
Onslow Salt 2.5 MTPA 2.5 MTPA, currently operating and producing salt from 8000 ha of salt ponds
Pastoral Leases Existing Urala and Minderoo pastoral leases within the cumulative assessment study area
Commercial Fisheries Primarily restricted to the existing inshore prawn fishery off Onslow
Recreational Fisheries Currently conducted by local residents and visitors in coastal and nearshore areas
Onslow Town Existing community of 600 to 900 people located 12 km from the Project
Wheatstone Project Executive Summary
26 | Chevron Australia Pty Ltd
1.15.2 Proposed Outcome-based Conditions
Proposed OBCs have been developed for those factors assessed as either having a high residual risk, or which otherwise have a high conservation value. Matters of NES, where different from WA-defined environmental factors, were also assessed using this approach. Chevron acknowledges that final content for any OBC for the Project will be determined by the WA Minister for the Environment.
To support the achievement of predicted environmental outcomes, each OBC, with the exception of OBC 7: Operational Marine Water and Sediment Quality Protection, is linked to an associated Statutory EMP, which are proposed for EPA review and DEWHA review/approval.
Table 1.3 lists the OBCs, and associated EMPs, that are proposed for the Project.
1.15.3 Proposed Statutory EMPs
The purpose of Statutory EMPs is to demonstrate to the EPA and DEWHA how Chevron and its contractors will maintain an acceptable standard of environmental performance in areas of medium or high risk throughout the Project. Statutory EMPs will set out the overarching objectives, strategies, performance criteria and relevant external guidance documents (such as EPA guidance statements) for all subsequent subsidiary plans.
This approach will also streamline the EMP review and approval process by providing EPA and DEWHA with fewer documents which require regulatory approval, without
reducing the level of confidence that the Project will successfully manage its environmental risks.
A summary of proposed Statutory EMPs developed/to be developed for the Project is provided in Table 1.4.
1.15.4 Subsidiary Plans
As planning and design associated with construction, commissioning, operations, and decommissioning phases are finalised, a set of additional or Subsidiary Plans are likely to be required for the implementation of the Project. Subsidiary Plans may include:
• Environmental plans which are required under legislation and/or impose relevant legal obligations on Chevron, but are not legally binding under the Ministerial Approvals of the EIS/ERMP.
• Management plans which are required for Chevron internal purposes but which are not legally binding in their own right.
Subsidiary Plans will be developed to satisfy regulatory requirements other than the EP and EPBC Acts, such plans will be submitted for regulatory approval to the relevant agencies independent of the submission of the EIS/ERMP.
Subsidiary Plans developed for internal purposes will manage environmental risks specifically related to the Project’s various works programs. Such plans will contain relevant policies, processes and work procedures agreed to between Chevron and its contractors with the intention that practicable environmental management measures are implemented and monitored for their effectiveness.
Table 1.3: Proposed Outcome-based Conditions
# Proposed Outcome-based Condition Proposed Statutory Plan
1 Coastal Processes Protection Coastal Processes Management Plan
2 Mangrove and Estuarine Habitat Protection Construction Environmental Management Plan
3 Benthic Primary Producer Habitat Protection Dredge Spoil and Disposal Management Plan
4 Marine Fauna Protection Marine Fauna Management Plan & Dredge Spoil and Disposal Management Plan
5 Terrestrial Flora and Vegetation Protection Construction Environmental Management Plan
6 Terrestrial Fauna Protection Construction Environmental Management Plan
7 Operational Marine Water and Sediment Quality Protection N/A
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 27
1.16 ConclusionThis Project presents the opportunity to provide an alternative and reliable source of LNG to international markets along with an additional secure source of domgas for the local market. The short-term economic benefits of the Project to Australia (employment opportunities and royalties to Government) are significant.
Chevron has prepared the Draft EIS/ERMP in consultation with DEWHA and the Western Australian EPA and in accordance with the EPBC Act (Cth), and the EP Act (WA).
At the request of the EPA, Chevron also agreed to implement a risk-based approach to the environmental assessment of the Project. The objectives and draft methodologies for risk-based EIA, described in the EPA draft guideline Application of risk-based assessment in EIA 2009, have been utilised in preparation of this document.
In addition to Commonwealth and State Government guidelines and Chevron corporate standards, the Project has adopted further standards to assist with the development of the EIS/ERMP. More specifically, the Project has applied EPA’s recently released Environmental
Assessment Guidelines – No. 4 Towards Outcome-based Conditions, Draft, December 2009.
Based on the various legislation and guidelines outlined above, outcomes of the EIS/ERMP include the following:
• Given the design features and management measures proposed, it is concluded that the potential impacts associated with the Project will be environmentally acceptable
• The probability of a significant unplanned hydrocarbon release occurring is very low. In this unlikely event, resulting potential environmental impacts on sensitive intertidal habitats could be significant. However, the design features and management measures proposed provide a high capacity for prevention and containment.
In summary, it is concluded that the implementation of the design features, management controls and mitigation measures described within the Draft EIS/ERMP will enable potential significant impacts to environmental, matters of NES, and socio-economic or health aspects to be managed to acceptable levels.
Table 1.4: Statutory EMPs
Plan Purpose Draft
Marine Fauna Management Plan (MFMP)
The purpose of the MFMP is to reduce the risk of potential Project-attributable impacts to marine fauna as a result of marine based project activities such as nearshore installation (rock placement, piling, pipeline installation) and shipping associated with the Wheatstone Project.
Appendix O6
Dredging and Spoil Disposal Management Plan (DSDMP)
The purpose of the DSDMP is to reduce additional loss of benthic primary producer habitat (BPPH) to that specified in the ERMP for the nearshore coastal waters as a result of Chevron’s dredging and spoil disposal operations.
Appendix S1
Coastal Processes Management Plan (CPMP)
The purpose of the finalised CPMP is to reduce potential Project-attributable impacts to coastal processes associated with the placement of project marine infrastructure of the Wheatstone Project.
Appendix T1
Construction Environmental Management Plan (CEMP)
The purpose of the CEMP is to reduce the Project-attributable impacts of onshore construction (vegetation clearing, earthworks, vehicle access) and nearshore installation (rock placement, piling, and shipping) associated with the Wheatstone Project.
Appendix U1
Operations Environmental Management Plan (OEMP)
The purpose of the OEMP is to reduce the Project-attributable impacts of onshore operations and associated activities including, LNG and Domgas production, FIFO operations, vehicle access and product shipping associated with the Wheatstone Project.
To Be Developed
Decommissioning Environmental Management Plan (DEMP)
The purpose of the DEMP is to reduce Project-attributable impacts of all activities associated with the shutdown and decommissioning of the Wheatstone Project at the end of the project lifespan.
To Be Developed
Wheatstone Project Executive Summary
28 | Chevron Australia Pty Ltd
Table
1.5
: Mari
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mat
eria
l will
be
man
ag
ed
b
ase
d o
n e
xper
ien
ce d
uri
ng
the
cap
ital
dre
dg
ing
pro
gra
m a
nd
will
in
clu
de
sele
ctio
n o
f p
lace
men
t lo
cati
on
s a
cco
rdin
gly
. Wh
en
pra
ctic
able
, mat
eria
l wit
h h
igh
fi
nes
co
nte
nt
will
be
pla
ced
at
pla
cem
ent
site
s in
de
eper
wat
ers
42
Mediu
m•
Lar
ge
volu
mes
o
f se
dim
ent
will
b
e d
red
ge
d an
d
dre
dg
e m
ater
ial
pla
ced
off
sho
re
• D
red
gin
g
cam
pai
gn
d
ura
tio
n is
3-4
ye
ars
• Im
pa
cts
to w
ater
q
ual
ity
are
pre
dic
ted
to b
e te
mp
ora
ry
Rea
son
able
Mo
del
ling
co
nd
uct
ed
and
co
nfi
rms
imp
act
p
red
icti
on
s
No
t A
pp
licab
leS
ect
ion
8.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 29
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Dre
dg
ing
:
Pla
cem
ent
of
dre
dg
e m
ater
ial
on
sho
re
• In
crea
sed
tu
rbid
ity
and
ligh
t at
ten
uat
ion
du
e to
d
eca
nt
wat
er
dis
char
ge
exce
ed
ing
ap
plic
able
wat
er
qu
alit
y ta
rget
s
33
Mediu
m•
Th
e o
nsh
ore
dre
dg
ed
mat
eria
l will
b
e co
nta
ine
d in
a b
un
de
d ar
ea t
o
red
uce
th
e ri
sk o
f an
un
con
fin
ed
re
leas
e o
f se
awat
er a
nd
sed
imen
ts
• A
dra
ina
ge
dit
ch (w
ith
su
mp
and
p
um
p sy
stem
) w
ill b
e in
stal
led
to
colle
ct a
nd
div
ert
seep
ag
e aw
ay
fro
m t
he
Ash
bu
rto
n D
elta
sys
tem
• D
isch
arg
e o
f d
eca
nt
wat
er f
rom
th
e o
nsh
ore
dre
dg
e m
ater
ial
pla
cem
ent
site
will
be
via
a co
ntr
olle
d p
oin
t w
hic
h w
ill in
clu
de
the
use
of
a w
eir
bo
x to
man
ag
e w
ater
hei
gh
t
• D
isch
arg
e w
ater
will
be
mo
nit
ore
d,
wit
h t
he
ob
ject
ive
of
mai
nta
inin
g
the
dis
char
ge
wat
er q
ual
ity
into
th
e n
ears
ho
re a
rea
at a
leve
l no
t in
ex
cess
of
25
0 m
g/L
To
tal
Su
spen
de
d S
olid
s (T
SS
). H
ow
ever
, th
is m
ay b
e re
fin
ed
bas
ed
on
fe
ed
ba
ck in
form
atio
n f
rom
m
on
ito
rin
g p
rog
ram
s
• M
on
ito
rin
g o
f d
eca
nt
wat
er
dis
char
ge
will
be
un
der
take
n w
ith
th
e o
bje
ctiv
e o
f co
mp
lyin
g w
ith
th
e m
axim
um
tu
rbid
ity
limit
of
25
0 m
g/L
TS
S
42
Mediu
m•
Incr
ease
d
turb
idit
y re
sult
ing
fro
m
de
can
t w
ater
re
leas
e w
ill b
e te
mp
ora
ry
• R
ece
ivin
g w
ater
s fo
r d
eca
nt
wat
er
are
seas
on
ally
tu
rbid
(A
shb
urt
on
R
iver
flo
w a
nd
cy
clo
nes
)
Rea
son
able
Mo
del
ling
co
nd
uct
ed
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Nea
rsh
ore
C
on
stru
ctio
n
Act
ivit
ies:
Co
nst
ruct
ion
of
pro
du
ct lo
ad
ing
fa
cilit
y (P
LF
) an
d ro
ck
pla
cem
ent
for
mat
eria
ls
offl
oa
din
g
faci
lity
(MO
F)
bre
akw
ater
w
alls
an
d
tru
nkl
ine
tren
chin
g an
d
stab
ilisa
tio
n
• C
han
ges
to
tu
rbid
ity
and
ligh
t at
ten
uat
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
h
as b
een
sel
ect
ed
to r
ed
uce
ris
ks
to s
ensi
tive
wat
er q
ual
ity
rece
pto
rs
wh
ere
pra
ctic
able
• A
ctiv
ity
will
be
un
der
take
n in
a
cco
rdan
ce w
ith
th
e C
EM
P w
hic
h
will
be
fin
aliz
ed
pri
or
to
com
men
cem
ent
of
con
stru
ctio
n
act
ivit
ies
• A
DS
DM
P s
pe
cifi
c to
tru
nkl
ine
tren
chin
g a
ctiv
itie
s w
ill b
e d
evel
op
ed
61
Low
• L
oca
lise
d an
d
tem
po
rary
im
pa
cts
on
w
ater
qu
alit
y
• C
on
stru
ctio
n in
a
seas
on
ally
tu
rbid
mar
ine
envi
ron
men
t (A
shb
urt
on
R
iver
flo
w a
nd
cy
clo
nes
)
Rea
son
able
Su
rvey
dat
a av
aila
ble
an
d
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Ap
pen
dix
U
1
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Nea
rsh
ore
C
on
stru
ctio
n
Act
ivit
ies:
Nea
rsh
ore
tr
un
klin
e tr
ench
ing
and
st
abili
sati
on
• C
han
ges
to
tu
rbid
ity
and
ligh
t at
ten
uat
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• Tr
un
klin
e ro
ute
loca
tio
n h
as b
een
se
lect
ed
to r
ed
uce
ris
ks t
o
sen
siti
ve w
ater
qu
alit
y re
cep
tors
w
her
e p
ract
icab
le
• U
se g
rad
ed
rock
mat
eria
l wit
h
red
uce
d fi
nes
co
nte
nt
42
Mediu
m•
Imp
act
s to
wat
er
qu
alit
y h
ave
be
en m
od
elle
d
con
serv
ativ
ely
du
e to
u
nce
rtai
nty
in
dre
dg
ing
m
eth
od
olo
gy
Rea
son
able
Su
rvey
dat
a av
aila
ble
an
d
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
30 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)C
om
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Nea
rsh
ore
C
on
stru
ctio
n
Act
ivit
ies:
Tru
nkl
ine
sho
re
cro
ssin
g b
y tr
ench
ing
• C
han
ges
to
tu
rbid
ity
and
ligh
t at
ten
uat
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ctiv
ity
will
be
un
der
take
n in
a
cco
rdan
ce w
ith
th
e C
EM
P w
hic
h
will
be
fin
aliz
ed
pri
or
to
com
men
cem
ent
of
con
stru
ctio
n
act
ivit
ies
• U
se g
rad
ed
rock
mat
eria
l wit
h lo
w
fin
es c
on
ten
t
51
Mediu
m•
Dis
turb
ance
of
the
Ash
bu
rto
n
Eas
t la
go
on
fl
oo
r an
d
ad
jace
nt
seafl
oo
r w
ill
resu
lt in
te
mp
ora
ry
elev
ate
d
turb
idit
y le
vels
Rea
son
able
Su
rvey
dat
a av
aila
ble
an
d
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Ap
pen
dix
U
1
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Nea
rsh
ore
C
on
stru
ctio
n
Act
ivit
ies:
Tru
nkl
ine
sho
re
cro
ssin
g b
y m
icro
tun
nel
ling
• C
han
ges
to
tu
rbid
ity
and
ligh
t at
ten
uat
ion
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• Tr
un
klin
e sh
ore
cro
ssin
g to
be
inst
alle
d th
rou
gh
mic
rotu
nn
ellin
g
• A
ctiv
ity
will
be
un
der
take
n in
a
cco
rdan
ce w
ith
th
e C
EM
P w
hic
h
will
be
fin
aliz
ed
pri
or
to
com
men
cem
ent
of
con
stru
ctio
n
act
ivit
ies
62
Low
• L
imit
ed
d
istu
rban
ce t
o
the
seafl
oo
r
• Te
mp
ora
ry
incr
ease
in
turb
idit
y n
ear
the
seafl
oo
r en
tran
ce o
f th
e tu
nn
el d
uri
ng
co
nst
ruct
ion
Rea
son
able
Su
rvey
dat
a av
aila
ble
an
d
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Ap
pen
dix
U
1
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Ves
sel
Mo
vem
ents
• A
ccu
mu
lati
on
of
anti
-fo
ulin
g p
ain
ts
in m
arin
e se
dim
ents
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n o
n t
he
Co
ntr
ol o
f H
arm
ful A
nti
-fo
ulin
g
Sys
tem
s o
n S
hip
s as
mo
nit
ore
d b
y A
ust
ralia
n Q
uar
anti
ne
and
In
spe
ctio
n S
ervi
ce (
AQ
IS)
43
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Dis
char
ges
fr
om
On
sho
re
Co
nst
ruct
ion
:
Co
nst
ruct
ion
d
isch
arg
es
fro
m t
he
acc
om
mo
da
-ti
on
vill
ag
e,
sto
rmw
ater
ru
n-o
ff a
nd
re
vers
e o
smo
sis
bri
ne.
• E
xce
ed
ence
of
app
licab
le w
ater
q
ual
ity
tar
get
s o
uts
ide
the
mix
ing
zo
ne
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ctiv
ity
will
be
un
der
take
n in
a
cco
rdan
ce w
ith
th
e C
EM
P w
hic
h
will
be
fin
aliz
ed
pri
or
to
com
men
cem
ent
of
con
stru
ctio
n
act
ivit
ies
• N
ears
ho
re d
isch
arg
e lo
cati
on
s h
ave
be
en s
ele
cte
d to
re
du
ce r
isks
to
sen
siti
ve w
ater
qu
alit
y re
cep
tors
• M
ana
ge
dis
char
ges
by
taki
ng
into
a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
• D
iffu
ser
des
ign
ed
to o
pti
mis
e th
e d
iluti
on
of
the
dis
char
ge
wit
hin
th
e m
arin
e en
viro
nm
ent.
• M
ixin
g zo
ne
bo
un
dar
ies
to b
e es
tab
lish
ed
and
mo
nit
ori
ng
to
ach
ieve
ap
plic
able
wat
er q
ual
ity
targ
ets
at m
ixin
g zo
ne
bo
un
dar
y
52
Low
• T
he
use
of
a d
iffu
ser
to
incr
ease
rap
id
dilu
tio
n
• C
on
stru
ctio
n
dis
char
ges
will
b
e te
mp
ora
ry
Rea
son
able
to
Low
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e to
in
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.2
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 31
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Co
nst
ruct
ion
Dis
char
ges
fr
om
Off
sho
re
Co
nst
ruct
ion
• E
xce
ed
ence
of
app
licab
le
AN
ZE
CC
/A
RM
CA
NZ
g
uid
elin
es t
hro
ug
h
dis
char
ge
of
dri
ll cu
ttin
gs
and
m
ud
s, s
ewa
ge
fro
m v
esse
ls a
nd
h
ydro
test
wat
er
34
Low
• T
he
risk
as
sess
men
t as
sum
es
po
ten
tial
of
ou
tfal
l lin
e d
isch
arg
e to
sea
, w
hic
h m
ay
incl
ud
e p
rod
uce
d w
ater
(P
W)
and
the
po
ten
tial
fo
r d
isch
arg
e o
f P
W
fro
m p
latf
orm
s
• T
his
ass
essm
ent
also
ass
um
es
that
th
e d
isch
arg
e in
to
the
envi
ron
men
t w
ill m
eet
m
inim
um
st
and
ard
s.
Ass
essm
ent
con
sid
ere
d th
e si
ze o
f th
e d
evel
op
men
t (u
ltim
ate
25
M
TP
A p
lan
t), i
ts
op
erat
ion
al li
fe
and
po
ten
tial
fo
r si
gn
ifica
nt
qu
anti
ties
of
dis
char
ge
• C
om
plia
nce
wit
h O
ffsh
ore
P
etro
leu
m a
nd
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
as
they
ap
ply
fro
m t
ime
to
tim
e
• Tr
eatm
ent
in c
om
plia
nce
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n fo
r th
e P
reve
nti
on
of
Po
lluti
on
fro
m S
hip
s (M
AR
PO
L 7
3/7
8, A
nn
ex IV
)
• C
on
tro
lled
rele
ase
of
hyd
rote
st
wat
er t
o r
ed
uce
th
e ri
sk o
f to
xici
ty
imp
act
s
43
Low
• D
isch
arg
es f
rom
o
ffsh
ore
co
nst
ruct
ion
will
co
mp
ly w
ith
re
leva
nt
Co
nve
nti
on
s an
d
Re
gu
lati
on
s (C
om
plia
nce
w
ith
Off
sho
re
Pet
role
um
an
d
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9, M
AR
PO
L)
• C
on
stru
ctio
n
dis
char
ges
will
b
e te
mp
ora
ry
Hig
h
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
(fro
m s
imila
r p
roje
cts)
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sM
ain
ten
ance
D
red
gin
g•
Incr
ease
d
turb
idit
y an
d li
gh
t at
ten
uat
ion
ex
cee
ds
wat
er
qu
alit
y ta
rget
s
• M
ob
ilisa
tio
n o
f co
nta
min
ants
d
uri
ng
dre
dg
ing
le
ad
s to
an
ex
cee
den
ce o
f st
and
ard
s
33
Mediu
m•
Ass
um
es t
his
a
ctiv
ity
will
re
sult
in a
re
du
ctio
n in
ex
isti
ng
wat
er
qu
alit
y
• T
he
exis
tin
g
nea
rsh
ore
en
viro
nm
ent
is
seas
on
ally
h
igh
ly t
urb
id d
ue
to in
pu
ts f
rom
th
e A
shb
urt
on
R
iver
• O
ffsh
ore
wat
er
is m
ore
ch
ara
cter
isti
c o
f cl
ear
oce
anic
w
ater
s w
ith
less
tu
rbid
ity
and
se
dim
enta
tio
n
than
nea
rsh
ore
w
ater
s
• P
ote
nti
al n
ee
d
for
com
mu
nit
y e
du
cati
on
re
gar
din
g
visi
bili
ty o
f p
lum
e ve
rsu
s im
pa
ct
• S
urv
eys
will
be
un
der
take
n t
o
con
firm
nat
ura
l tu
rbid
ity
and
se
dim
enta
tio
n r
ates
an
d
con
tam
inat
ion
leve
ls
53
Low
• T
he
pre
dic
ted
m
ain
ten
ance
d
red
gin
g
volu
mes
are
low
fo
r th
e p
rop
ose
d
life
of
the
Pro
ject
• M
ain
ten
ance
d
red
gin
g is
p
red
icte
d to
be
sho
rt t
erm
Low
No
su
rvey
dat
a
No
mo
del
ve
rifi
cati
on
p
oss
ible
at
this
ti
me.
No
t A
pp
licab
leS
ect
ion
8.2
Wheatstone Project Executive Summary
32 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sR
elea
se o
f N
OR
M•
Acc
um
ula
ted
N
OR
M in
on
sho
re
pro
cess
filt
ers
wh
ich
may
cau
se
con
tam
inat
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• U
se o
f a
scal
e in
hib
ito
r to
man
ag
e b
uild
-up
of
scal
e (a
nd
ther
efo
re
nat
ura
lly o
ccu
rrin
g ra
dio
act
ive
mat
eria
l [N
OR
M])
• A
n a
pp
rove
d N
OR
M M
ana
gem
ent
Pla
n w
ill b
e d
evel
op
ed
on
id
enti
fica
tio
n o
f N
OR
M
• M
ana
gem
ent
and
dis
po
sal o
f N
OR
M in
acc
ord
ance
wit
h t
he
Gu
idel
ines
fo
r th
e m
ana
gem
ent
of
NO
RM
in t
he
oil
& g
as in
du
stry
(I
nte
rnat
ion
al A
sso
ciat
ion
of
Oil
and
Gas
Pro
du
cers
20
08
)
45
Ver
y
Low
• W
her
e p
rese
nt,
N
OR
M w
ill b
e m
ana
ge
d to
th
e re
qu
ire
d
stan
dar
ds
Hig
h
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sV
esse
l M
ove
men
ts•
Acc
um
ula
tio
n o
f an
ti-f
ou
ling
pai
nts
in
mar
ine
sed
imen
ts.
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n o
n t
he
Co
ntr
ol o
f H
arm
ful A
nti
-fo
ulin
g
Sys
tem
s o
n S
hip
s as
mo
nit
ore
d b
y A
QIS
43
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
nsh
ore
O
per
atio
ns:
Nea
rsh
ore
d
isch
arg
e o
f w
aste
wat
er,
pro
cess
w
aste
wat
er,
con
tact
st
orm
wat
er a
nd
R
O b
rin
e
• E
xce
ed
ence
of
app
licab
le w
ater
q
ual
ity
tar
get
s o
uts
ide
the
mix
ing
zo
ne
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
Cs
for
wat
er q
ual
ity
• E
nd
of
pip
e d
iffu
ser
loca
ted
at t
he
PL
F
• M
ana
ge
dis
char
ges
by
taki
ng
into
a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
• M
ixin
g zo
ne
bo
un
dar
ies
to b
e es
tab
lish
ed
and
mo
nit
ori
ng
to
ach
ieve
ap
plic
able
wat
er q
ual
ity
targ
ets
at m
ixin
g zo
ne
bo
un
dar
y
52
Low
• T
he
use
of
a d
iffu
ser
to
incr
ease
rap
id
dilu
tio
n
Rea
son
able
to
Low
No
t al
l ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.2
Tab
le 12
.10
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
nsh
ore
O
per
atio
ns:
Dis
char
ge
of
PW
fro
m t
he
LN
G p
lan
t
• E
xce
ed
ence
of
the
targ
ets
for
Pre
dic
ted
No
E
ffe
ct
Co
nce
ntr
atio
n
(PN
EC
) co
nce
ntr
atio
n
ou
tsid
e th
e m
ixin
g
zon
e
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
Cs
for
wat
er q
ual
ity
• S
ele
ctio
n o
f o
utf
all l
oca
tio
n a
nd
d
iffu
ser
des
ign
fo
r a
de
qu
ate
dilu
tio
n a
nd
dis
per
sio
n o
f P
W
• T
he
Pro
po
nen
t w
ill c
har
act
eris
e P
W, p
rio
r to
th
e P
W b
ein
g b
rou
gh
t o
nsh
ore
to
det
erm
ine
app
rop
riat
e d
iluti
on
rat
es t
o a
chie
ve P
NE
C, t
o
det
erm
ine
a d
isch
arg
e lo
cati
on
an
d
to d
eter
min
e a
mix
ing
zon
e ar
ea
that
is a
ccep
tab
le t
o t
he
reg
ula
tory
a
gen
cies
EP
A a
nd
DE
WH
A
• D
iffu
ser
des
ign
an
d si
ze o
f m
ixin
g
zon
e sh
all t
ake
into
co
nsi
der
atio
n
the
ag
ree
d ta
rget
fo
r P
NE
C
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
42
Mediu
m•
Dis
char
ges
of
PW
will
be
man
ag
ed
to
com
ply
wit
h
rele
van
t R
eg
ula
tio
ns
(Off
sho
re
Pet
role
um
an
d
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9)
Low
Ava
ilab
le
info
rmat
ion
is
ina
de
qu
ate
No
t A
pp
licab
leS
ect
ion
8.2
Tab
le 12
.10
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 33
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
ffsh
ore
O
per
atio
ns
• E
xce
ed
ence
of
targ
ets
for
PN
EC
o
f P
W.
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
om
plia
nce
wit
h O
ffsh
ore
P
etro
leu
m a
nd
Gre
enh
ou
se
Gas
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge
thro
ug
h
eco
toxi
city
tes
tin
g an
d o
r b
ench
mar
kin
g w
ith
sim
ilar
NW
S
PW
• P
erio
dic
PW
dis
char
ge
test
ing
wit
h
full
chem
ical
ch
ara
cter
isat
ion
d
uri
ng
op
erat
ion
s
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
42
Mediu
m•
Dis
char
ges
of
PW
will
be
man
ag
ed
to
com
ply
wit
h
rele
van
t R
eg
ula
tio
ns
(Off
sho
re
Pet
role
um
an
d
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9)
Rea
son
able
Mo
del
ling
co
nd
uct
ed
bu
t ca
libra
tio
n s
ho
ws
occ
asio
nal
ab
erra
tio
n f
rom
o
ccu
rren
ces
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
ffsh
ore
O
per
atio
ns
• E
xce
ed
ence
of
targ
ets
for
ME
G
and
BT
EX
in P
W
du
rin
g st
art-
up
s
• D
iffu
ser
des
ign
an
d si
ze o
f m
ixin
g
zon
e sh
all t
ake
into
co
nsi
der
atio
n
the
targ
et f
or
PN
EC
• C
on
tro
l rat
e, t
imin
g an
d
char
act
eris
tics
of
dis
char
ge
of
ME
G
wit
h t
he
ob
ject
ive
of
mai
nta
inin
g
dis
char
ge
wat
er q
ual
ity
at a
leve
l n
ot
in e
xces
s o
f 5
0 m
g/L
loca
l to
th
e p
latf
orm
(or
an a
gre
ed
dis
tan
ce
fro
m t
he
pla
tfo
rm)
41
Hig
h•
Dis
char
ges
will
o
ccas
ion
ally
ex
cee
d P
NE
C
con
cen
trat
ion
s o
uts
ide
the
mix
ing
zon
e
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
ffsh
ore
O
per
atio
ns
• E
xce
ed
ence
of
targ
ets
for
Co
olin
g
Wat
er (C
W)
• D
iffu
ser
des
ign
an
d si
ze o
f m
ixin
g
zon
e sh
all t
ake
into
co
nsi
der
atio
n
the
targ
et f
or
CW
plu
me
42
Mediu
m•
Dis
char
ges
of
CW
will
be
man
ag
ed
to
com
ply
wit
h
rele
van
t R
eg
ula
tio
ns
(Off
sho
re
Pet
role
um
an
d
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9)
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sD
isch
arg
es
fro
m O
ffsh
ore
O
per
atio
ns:
Dis
char
ge
of
sew
ag
e an
d
pu
tres
cib
le
org
anic
was
te
and
bri
ne
• C
han
ges
to
b
ack
gro
un
d w
ater
an
d se
dim
ent
qu
alit
y
• Tr
eatm
ent
in c
om
plia
nce
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n f
or
the
Pre
ven
tio
n o
f P
ollu
tio
n f
rom
Sh
ips
(MA
RP
OL
73
/78
, An
nex
IV)
63
Ver
y
Low
• D
isch
arg
es f
rom
o
ffsh
ore
o
per
atio
ns
will
b
e m
ana
ge
d to
co
mp
ly w
ith
re
leva
nt
Co
nve
nti
on
s (M
AR
PO
L)
• R
apid
up
take
of
bio
avai
lble
n
utr
ien
ts b
y p
hy
top
lan
kto
n
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.2
Wheatstone Project Executive Summary
34 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sL
eaks
an
d S
pill
s•
Nea
rsh
ore
leak
s an
d sp
ills
ente
rin
g
the
mar
ine
envi
ron
men
t an
d
de
gra
din
g m
arin
e w
ater
an
d
sed
imen
t q
ual
ity
34
Low
• R
isk
asse
ssm
ent
con
sid
ere
d a
hig
hly
mo
bile
, h
igh
en
erg
y sy
stem
• R
isk
asse
ssm
ent
bas
ed
on
a
wo
rst-
case
a
ccu
mu
lati
on
of
con
tam
inan
ts in
se
dim
ents
fro
m
leak
s
• In
tert
idal
are
as
con
sid
ere
d m
ost
se
nsi
tive
to
th
is
imp
act
• A
Dep
artm
ent
of
Min
es a
nd
P
etro
leu
m (
DM
P)
app
rove
d M
arin
e O
il P
ollu
tio
n P
lan
(M
OP
P)
will
be
imp
lem
ente
d an
d re
leva
nt
per
son
nel
will
be
trai
ne
d in
a
cco
rdan
ce w
ith
th
e M
OP
P
• T
he
follo
win
g m
easu
res
will
be
use
d d
uri
ng
dri
llin
g a
ctiv
itie
s to
re
du
ce t
he
risk
of
a su
bse
a b
low
ou
t:
Pro
visi
on
of
nu
mer
ou
s p
rim
ary
• an
d se
con
dar
y b
arri
ers
(su
bse
a sa
fety
val
ves,
Pro
du
ctio
n
Mas
ter
Val
ve, S
wab
Val
ve,
Tre
e C
up
, Pro
du
ctio
n S
hu
tdo
wn
V
alve
, Pro
du
ctio
n W
ing
Val
ve
etc)
Wel
l bo
re s
tab
ility
mo
del
ing
for
• re
serv
oir
an
d o
verb
urd
en
form
atio
ns
Sp
eci
fic
and
app
rove
d co
ntr
ols
•
for
wo
rk-o
ver
or
re-e
ntr
y o
per
atio
ns
24
Mediu
m•
Th
e p
rob
abili
ty
of
larg
e sc
ale
leak
s an
d sp
ills
asso
ciat
ed
wit
h
nea
rsh
ore
in
fras
tru
ctu
re
is lo
w
• T
he
abili
ty t
o
con
tain
a
nea
rsh
ore
leak
o
r sp
ill
• C
on
den
sate
h
igh
ly t
oxi
c to
m
ang
rove
se
ed
ling
s b
ut
evap
ora
tes
rap
idly
co
mp
are
d w
ith
cr
ud
e o
il
• Im
ple
men
tati
on
o
f th
e M
OP
P
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.2
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Op
erat
ion
sL
eaks
an
d S
pill
s•
Off
sho
re le
aks
and
sp
ills
ente
rin
g th
e m
arin
e en
viro
nm
ent
and
d
eg
rad
ing
mar
ine
wat
er a
nd
se
dim
ent
qu
alit
y
• R
efer
to
“N
ears
ho
re le
aks
and
sp
ills
ente
rin
g th
e m
arin
e en
viro
nm
ent”
ab
ove
34
Low
• T
he
pro
bab
ility
o
f la
rge
scal
e le
aks
and
spill
s as
soci
ate
d w
ith
o
ffsh
ore
in
fras
tru
ctu
re is
lo
w. A
do
pti
on
of
des
ign
pra
ctic
es
to r
ed
uce
th
e ri
sk o
f sp
ills
• Im
ple
men
tati
on
o
f th
e M
OP
P
• C
on
den
sate
an
d
die
sel r
apid
ly
evap
ora
te a
nd
d
isp
erse
in t
his
en
viro
nm
ent,
re
du
cin
g th
e ri
sk
of
imp
act
to
se
nsi
tive
re
cep
tors
• L
ack
of
wat
er
qu
alit
y se
nsi
tive
re
cep
tors
at
the
off
sho
re w
ell
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 35
Mari
ne
Wate
r an
d
Sedim
ent
Qu
ality
Ad
dit
ive
Eff
ect
s•
Th
e su
m o
f al
l p
ote
nti
al
Pro
ject
-at
trib
uta
ble
im
pa
cts
fro
m a
ll P
roje
ct p
has
es
and
asp
ect
s
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ee
abo
ve f
or
pro
po
sed
m
ana
gem
ent/
mit
igat
ion
mea
sure
s4
1H
igh
• T
he
risk
ran
kin
g
of
the
ad
dit
ive
effe
cts
of
all
Pro
ject
asp
ect
s is
det
erm
ine
d b
y th
e h
igh
est
risk
ra
nki
ng
of
any
ind
ivid
ual
asp
ect
• T
he
hig
h r
isk
ran
kin
g o
f th
e a
dd
itiv
e ef
fect
s is
det
erm
ine
d b
y th
e h
igh
ris
k ra
nki
ng
of
the
ind
ire
ct im
pa
cts
of
con
stru
ctio
n
dre
dg
ing
Low
No
t A
pp
licab
leS
ect
ion
8.2
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
• D
ire
ct: L
oss
of
sub
-tid
al B
PP
H
thro
ug
h r
emo
val
wit
hin
Pro
ject
are
a
32
Hig
h•
Lev
el o
f cr
itic
al
loss
will
be
det
erm
ine
d o
nce
th
e m
ana
gem
ent
un
it h
as b
een
d
efin
ed
• R
isk
ran
kin
g is
b
ase
d o
n
• L
oss
of
mar
ine
BP
PH
• R
isk
ran
kin
g
assu
mes
re
gu
lar
mai
nte
nan
ce
dre
dg
ing
• A
lso
co
nsi
der
ed
p
ote
nti
al fl
ow
-on
ef
fect
s to
th
e fi
shin
g in
du
stry
e.
g. fi
sh n
urs
ery
and
bre
ed
ing
ar
eas
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
b
ase
d o
n p
rese
nce
or
abse
nce
of
BP
PH
an
d M
arin
e P
rote
cte
d A
reas
61
Low
• T
her
e is
lim
ite
d
BP
PH
in, a
nd
im
me
dia
tely
a
dja
cen
t to
, th
e d
red
ge
area
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
36 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
• In
dir
ect
: Im
pa
ct t
o
BP
PH
du
e to
in
crea
sed
tu
rbid
ity,
se
dim
enta
tio
n a
nd
lig
ht
atte
nu
atio
n
lea
din
g to
loss
of
BP
PH
in e
xces
s o
f a
ccep
tab
le le
vels
as
defi
ne
d in
EP
A
Gu
idel
ines
.
32
Hig
h•
Lev
el o
f cr
itic
al
loss
will
be
det
erm
ine
d o
nce
th
e m
ana
gem
ent
un
it h
as b
een
d
efin
ed
• R
isk
ran
kin
g is
b
ase
d o
n
• L
oss
of
mar
ine
BP
PH
• R
isk
ran
kin
g
assu
mes
re
gu
lar
mai
nte
nan
ce
dre
dg
ing
• A
lso
co
nsi
der
ed
p
ote
nti
al fl
ow
-on
ef
fect
s to
th
e fi
shin
g in
du
stry
e.
g. fi
sh n
urs
ery
and
bre
ed
ing
ar
eas
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• Im
ple
men
tati
on
of
mo
nit
ori
ng
p
rog
ram
s o
utl
ine
d in
th
e D
SD
MP
:
Wat
er q
ual
ity
mo
nit
ori
ng
•
loca
ted
in a
reas
of
key
sen
siti
ve
rece
pto
rs
Co
ral h
ealt
h m
on
ito
rin
g w
ith
in
• th
e Z
on
e o
f P
arti
al L
oss
, wit
h a
n
asso
ciat
ed
tier
ed
man
ag
emen
t re
spo
nse
Co
nti
ng
ency
co
ral h
ealt
h
• m
on
ito
rin
g w
ith
in t
he
Zo
ne
of
Infl
uen
ce u
nd
erta
ken
in t
he
even
t th
at w
ater
qu
alit
y tr
igg
ers
are
exce
ed
ed
, wit
h a
n
asso
ciat
ed
tier
ed
man
ag
emen
t re
spo
nse
Pre
-sp
awn
ing
and
po
st-
• sp
awn
ing
mo
nit
ori
ng
of
cora
l g
ravi
dit
y
Mo
nit
ori
ng
of
sea
gra
ss a
nd
•
oth
er B
PP
H w
ill b
e ca
rrie
d o
ut
pre
an
d p
ost
dre
dg
ing
o
per
atio
ns
and
du
rin
g su
mm
er
and
win
ter
to c
aptu
re
seas
on
alit
y.
41
Hig
h•
Lar
ge
volu
mes
o
f se
dim
ent
to
be
dre
dg
ed
• D
red
gin
g
cam
pai
gn
d
ura
tio
n is
3-4
ye
ars
• T
her
e is
lim
ite
d
BP
PH
in, a
nd
im
me
dia
tely
a
dja
cen
t to
, th
e d
red
ge
area
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Ap
pen
dix
S
1
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
:
Dre
dg
e m
ater
ial
pla
cem
ent
off
sho
re
• D
ire
ct: L
oss
of
sub
-tid
al B
PP
H
du
e to
pla
cem
ent
of
dre
dg
e m
ater
ial
dir
ect
ly o
n s
ea
be
d.
• S
ele
ctio
n o
f d
red
ge
mat
eria
l p
lace
men
t si
tes
to r
ed
uce
ris
ks t
o
BP
PH
wh
ere
pra
ctic
able
61
Low
• T
her
e is
lim
ite
d
BP
PH
in, a
nd
im
me
dia
tely
a
dja
cen
t to
, th
e p
lace
men
t si
tes
• C
ora
ls c
lose
st t
o
pla
cem
ent
site
s m
on
ito
red
to
con
firm
no
a
dve
rse
imp
act
s fr
om
pla
cem
ent
act
ivit
ies
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 37
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
:
Dre
dg
e m
ater
ial
pla
cem
ent
off
sho
re
• In
dir
ect
: Im
pa
ct o
n
BP
PH
du
e to
in
crea
sed
tu
rbid
ity,
se
dim
enta
tio
n a
nd
lig
ht
atte
nu
atio
n.
32
Hig
h•
Lev
el o
f cr
itic
al
loss
will
be
det
erm
ine
d o
nce
th
e m
ana
gem
ent
un
it h
as b
een
d
efin
ed
• R
isk
ran
kin
g is
b
ase
d o
n
• L
oss
of
mar
ine
BP
PH
• R
isk
ran
kin
g
assu
mes
re
gu
lar
mai
nte
nan
ce
dre
dg
ing
• A
lso
co
nsi
der
ed
p
ote
nti
al fl
ow
-on
ef
fect
s to
th
e fi
shin
g in
du
stry
e.
g. fi
sh n
urs
ery
and
bre
ed
ing
ar
eas
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• D
iffu
sers
will
be
uti
lise
d d
uri
ng
o
ffsh
ore
dre
dg
e m
ater
ial
pla
cem
ent
via
the
CS
D
42
Mediu
m•
Th
ere
is li
mit
ed
B
PP
H in
, an
d
imm
ed
iate
ly
ad
jace
nt
to, t
he
pla
cem
ent
site
s
• C
ora
ls c
lose
st t
o
site
mo
nit
ore
d
to c
on
firm
no
a
dve
rse
imp
act
s fr
om
pla
cem
ent
act
ivit
ies
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Ap
pen
dix
S
1
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
• In
dir
ect
: Im
pa
ct t
o
BP
PH
du
e to
in
crea
sed
tu
rbid
ity,
se
dim
enta
tio
n a
nd
lig
ht
atte
nu
atio
n
lea
din
g to
loss
of
BP
PH
in e
xces
s o
f a
ccep
tab
le le
vels
as
defi
ne
d in
EP
A
Gu
idel
ines
.
32
Hig
h•
Lev
el o
f cr
itic
al
loss
will
be
det
erm
ine
d o
nce
th
e m
ana
gem
ent
un
it h
as b
een
d
efin
ed
• R
isk
ran
kin
g is
b
ase
d o
n
• L
oss
of
mar
ine
BP
PH
• R
isk
ran
kin
g
assu
mes
re
gu
lar
mai
nte
nan
ce
dre
dg
ing
• A
lso
co
nsi
der
ed
p
ote
nti
al fl
ow
-on
ef
fect
s to
th
e fi
shin
g in
du
stry
e.
g. fi
sh n
urs
ery
and
bre
ed
ing
ar
eas
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• Im
ple
men
tati
on
of
mo
nit
ori
ng
p
rog
ram
s o
utl
ine
d in
th
e D
SD
MP
:
Wat
er q
ual
ity
mo
nit
ori
ng
•
loca
ted
in a
reas
of
key
sen
siti
ve
rece
pto
rs
Co
ral h
ealt
h m
on
ito
rin
g w
ith
in
• th
e Z
on
e o
f P
arti
al L
oss
, wit
h a
n
asso
ciat
ed
tier
ed
man
ag
emen
t re
spo
nse
Co
nti
ng
ency
co
ral h
ealt
h
• m
on
ito
rin
g w
ith
in t
he
Zo
ne
of
Infl
uen
ce u
nd
erta
ken
in t
he
even
t th
at w
ater
qu
alit
y tr
igg
ers
are
exce
ed
ed
, wit
h a
n
asso
ciat
ed
tier
ed
man
ag
emen
t re
spo
nse
Pre
-sp
awn
ing
and
po
st-
• sp
awn
ing
mo
nit
ori
ng
of
cora
l g
ravi
dit
y
Mo
nit
ori
ng
of
sea
gra
ss a
nd
•
oth
er B
PP
H w
ill b
e ca
rrie
d o
ut
pre
an
d p
ost
dre
dg
ing
o
per
atio
ns
and
du
rin
g su
mm
er
and
win
ter
to c
aptu
re
seas
on
alit
y.
41
Hig
h•
Lar
ge
volu
mes
o
f se
dim
ent
to
be
dre
dg
ed
• D
red
gin
g
cam
pai
gn
d
ura
tio
n is
3-4
ye
ars
• T
her
e is
lim
ite
d
BP
PH
in, a
nd
im
me
dia
tely
a
dja
cen
t to
, th
e d
red
ge
area
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Ap
pen
dix
S
1
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
:
Dre
dg
e m
ater
ial
pla
cem
ent
off
sho
re
• D
ire
ct: L
oss
of
sub
-tid
al B
PP
H
du
e to
pla
cem
ent
of
dre
dg
e m
ater
ial
dir
ect
ly o
n s
ea
be
d.
• S
ele
ctio
n o
f d
red
ge
mat
eria
l p
lace
men
t si
tes
to r
ed
uce
ris
ks t
o
BP
PH
wh
ere
pra
ctic
able
61
Low
• T
her
e is
lim
ite
d
BP
PH
in, a
nd
im
me
dia
tely
a
dja
cen
t to
, th
e p
lace
men
t si
tes
• C
ora
ls c
lose
st t
o
pla
cem
ent
site
s m
on
ito
red
to
con
firm
no
a
dve
rse
imp
act
s fr
om
pla
cem
ent
act
ivit
ies
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
38 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dre
dg
ing
:
Dre
dg
e m
ater
ial
pla
cem
ent
on
sho
re
• In
dir
ect
: Im
pa
ct o
n
man
gro
ves
du
e to
g
rou
nd
wat
er
seep
ag
e an
d
exce
ed
ence
of
acc
epta
ble
leve
ls
du
e to
incr
ease
d
turb
idit
y an
d lig
ht
atte
nu
atio
n f
rom
to
de
can
t w
ater
d
isch
arg
e.
32
Hig
h•
Lev
el o
f cr
itic
al
loss
will
be
det
erm
ine
d o
nce
th
e m
ana
gem
ent
un
it h
as b
een
d
efin
ed
• R
isk
ran
kin
g is
b
ase
d o
n
• L
oss
of
mar
ine
BP
PH
.
• R
isk
ran
kin
g
assu
mes
re
gu
lar
mai
nte
nan
ce
dre
dg
ing
.
• A
lso
co
nsi
der
ed
p
ote
nti
al fl
ow
-on
ef
fect
s to
th
e fi
shin
g in
du
stry
e.
g. fi
sh n
urs
ery
and
bre
ed
ing
ar
eas.
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
Cs
for
BP
PH
an
d m
ang
rove
s
• P
lace
men
t si
te lo
cati
on
sel
ect
ed
to
red
uce
ris
ks t
o B
PP
H w
her
e p
ract
icab
le
• D
isch
arg
e o
f d
eca
nt
wat
er f
rom
th
e o
nsh
ore
dre
dg
e m
ater
ial
pla
cem
ent
site
will
be
via
a co
ntr
olle
d p
oin
t w
hic
h w
ill in
clu
de
the
use
of
a w
eir
bo
x to
co
ntr
ol
wat
er h
eig
ht
• T
he
on
sho
re d
red
ge
mat
eria
l will
b
e co
nta
ine
d in
a b
un
de
d ar
ea t
o
red
uce
th
e ri
sk o
f an
un
con
fin
ed
re
leas
e o
f se
awat
er a
nd
sed
imen
ts
• A
dra
ina
ge
dit
ch (w
ith
su
mp
and
p
um
p sy
stem
) w
ill b
e in
stal
led
to
colle
ct a
nd
div
ert
seep
ag
e aw
ay
fro
m t
he
Ash
bu
rto
n R
iver
Del
ta
syst
em
• M
on
ito
rin
g o
f d
isch
arg
e w
ater
will
b
e u
nd
erta
ken
wit
h t
he
ob
ject
ive
of
com
ply
ing
wit
h t
he
max
imu
m
turb
idit
y lim
it o
f 2
50
mg
/L T
SS
• A
man
gro
ve m
on
ito
rin
g p
rog
ram
w
ill b
e d
esig
ne
d an
d im
ple
men
ted
to
det
ect
ch
ang
e to
man
gro
ve
hea
lth
an
d m
ang
rove
hab
itat
co
nd
itio
n. T
he
mo
nit
ori
ng
pro
gra
m
will
incl
ud
e:
Man
gro
ve t
ree
spe
cies
•
com
po
siti
on
an
d d
ensi
ty
Man
gro
ve t
ree
hea
lth
(can
op
y •
den
sity
an
d/o
r tr
ee
con
dit
ion
d
ata)
Gro
un
dw
ater
/so
ilwat
er s
alin
ity
• an
d w
ater
tab
le d
epth
Se
dim
ent
hei
gh
ts a
nd
gro
un
d
• le
vels
Hyd
roca
rbo
n a
nd
hea
vy m
etal
•
con
cen
trat
ion
in m
ang
rove
se
dim
ents
an
d se
lect
ed
m
ang
rove
-dep
end
ant
fau
na
Div
ersi
ty a
nd
abu
nd
ance
of
• m
ang
rove
-dep
end
ant
fau
na
Map
pin
g o
f m
ang
rove
hab
itat
•
dis
trib
uti
on
an
d co
astl
ine
mo
vem
ents
(Co
nt’
d)
42
Mediu
m•
Gro
un
dw
ater
ch
ara
cter
isti
cs
at m
ang
rove
lo
cati
on
s n
ot
pre
dic
ted
to
alte
r
• M
on
ito
rin
g o
f m
ang
rove
s to
co
nfi
rm n
o
ad
vers
e im
pa
cts
• L
arg
e b
uff
er
area
bet
we
en
the
on
sho
re
pla
cem
ent
site
an
d m
ang
rove
s
• S
um
p to
th
e so
uth
of
the
on
sho
re d
red
ge
mat
eria
l p
lace
men
t si
te
and
thu
s w
ell
away
fro
m t
he
man
gro
ves
to
the
wes
t o
f th
e p
lace
men
t si
te
Rea
son
able
Exc
elle
nt
surv
ey
dat
a, m
od
ellin
g
con
du
cte
d
No
t A
pp
licab
leS
ect
ion
8.3
Tab
le 12
.4
and
12.5
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 39
• R
efer
to
Ch
apte
r 9
: Ter
rest
rial
Ris
k A
sses
smen
t an
d M
ana
gem
ent
rela
tin
g to
gro
un
dw
ater
mo
nit
ori
ng
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Ves
sel
Mo
vem
ents
• To
xici
ty e
ffe
cts
of
anti
-fo
ula
nts
on
B
PP
H
• In
tro
du
ctio
n o
f m
arin
e p
ests
34
Low
• Fo
r th
is r
isk
asse
ssm
ent
the
focu
s w
as o
n t
he
intr
od
uct
ion
of
no
n-i
nd
igen
ou
s sp
eci
es. T
he
risk
as
sess
men
t w
as
bas
ed
on
in
tro
du
ced
sp
eci
es’
sub
seq
uen
t im
pa
ct o
n
mar
ine
BP
PH
an
d b
iod
iver
sity
.
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n o
n t
he
Co
ntr
ol o
f H
arm
ful A
nti
-fo
ulin
g
Sys
tem
s o
n S
hip
s as
mo
nit
ore
d b
y A
QIS
53
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Exp
ert
inve
stig
atio
n
stu
die
s
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Ves
sel
Mo
vem
ents
• D
isch
arg
e o
f b
alla
st w
ater
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h A
QIS
b
alla
st w
ater
dis
char
ge
req
uir
emen
ts (
Au
stra
lian
Bal
last
W
ater
Man
ag
emen
t R
eq
uir
emen
ts
V4
20
08
)
53
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Exp
ert
inve
stig
atio
n
stu
die
s
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
On
sho
re
Co
nst
ruct
ion
A
ctiv
itie
s
• D
ire
ct lo
ss o
f in
tert
idal
BP
PH
in
exce
ss o
f E
PA
G
uid
elin
es
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
se
lect
ed
to r
ed
uce
th
e ri
sk o
f d
istu
rban
ce t
o B
PP
H w
her
e p
ract
icab
le
• In
th
e ev
ent
of
sed
imen
t d
epo
siti
on
, ero
sio
n, d
ust
d
epo
siti
on
, or
gro
un
dw
ater
al
tera
tio
ns
in m
ang
rove
hab
itat
d
uri
ng
con
stru
ctio
n a
ctiv
ity
exce
ed
s b
ack
gro
un
d le
vels
im
ple
men
t m
itig
atio
n m
easu
res
as
defi
ne
d in
th
e D
SD
MP,
CP
MP
an
d
CE
MP
• If
cle
arin
g ex
cee
ds
per
mit
ted
area
o
f d
istu
rban
ce o
f m
ang
rove
h
abit
at:
Imm
ed
iate
ly c
ease
cle
arin
g in
•
man
gro
ve a
reas
Co
nfi
rm m
ang
rove
hab
itat
•
loss
es b
y su
rvey
an
d re
defi
ne
clea
rin
g b
ou
nd
arie
s
Inve
stig
ate
op
tio
ns
for
• re
hab
ilita
tio
n o
f m
ang
rove
h
abit
at
Iden
tify
th
e ca
use
of
exce
ssiv
e •
clea
rin
g, r
evie
w w
ork
p
roce
du
res
and
amen
d as
n
ece
ssar
y to
re
du
ce t
he
risk
of
furt
her
exc
ee
den
ce o
f p
erm
itte
d cl
eari
ng
• A
mo
nit
ori
ng
pro
gra
m w
ill b
e im
ple
men
ted
in o
rder
to
mo
nit
or
bo
th t
he
hea
lth
of
man
gro
ves
and
th
e ke
y fa
cto
rs m
ain
tain
ing
the
man
gro
ve h
abit
at
32
Hig
h•
Inte
rtid
al B
PP
H
in P
roje
ct a
rea
will
be
per
man
entl
y re
mo
ved
• E
xce
ed
ence
of
EP
A G
S N
o. 3
lo
ss g
uid
elin
es
Hig
h
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
8.3
Ap
pen
dix
S
1
Ap
pen
dix
T
1
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
40 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
On
sho
re
Co
nst
ruct
ion
A
ctiv
itie
s
• In
dir
ect
imp
act
s to
th
e A
shb
urt
on
R
iver
del
ta
man
gro
ve s
yste
m
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
Ch
apte
r 9
Se
ctio
n 9
.8 A
ir
Qu
alit
y
• N
ears
ho
re o
utf
all l
oca
tio
n s
ele
cte
d
to r
ed
uce
ris
ks t
o B
PP
H w
her
e p
ract
icab
le
• T
he
follo
win
g m
easu
res
will
be
use
d d
uri
ng
dri
llin
g a
ctiv
itie
s to
re
du
ce t
he
risk
of
a s
ub
sea
blo
wo
ut:
Pro
visi
on
of
nu
mer
ou
s p
rim
ary
• an
d se
con
dar
y b
arri
ers
(su
bse
a sa
fety
val
ves,
Pro
du
ctio
n
Mas
ter
Val
ve, S
wab
Val
ve, T
ree
Cu
p, P
rod
uct
ion
Sh
utd
ow
n
Val
ve, P
rod
uct
ion
Win
g V
alve
et
c)
Wel
l bo
re s
tab
ility
mo
del
ing
for
• re
serv
oir
an
d o
verb
urd
en
form
atio
ns
Sp
eci
fic
and
app
rove
d co
ntr
ols
•
for
wo
rk-o
ver
or
re-e
ntr
y o
per
atio
ns
Exc
lusi
on
zo
ne
aro
un
d
• w
ellh
ead
s w
ith
no
an
cho
rin
g in
ex
clu
sio
n a
rea
gaz
ette
d an
d o
n
nav
igat
ion
al c
har
ts
Man
ag
e d
isch
arg
es b
y ta
kin
g in
to
• a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
Mo
nit
ori
ng
to c
on
firm
ap
plic
able
•
wat
er q
ual
ity
targ
ets
at m
ixin
g
zon
e b
ou
nd
ary
62
Low
• It
is c
on
sid
ere
d
un
likel
y th
at a
b
low
ou
t w
ill
occ
ur
• O
n a
pp
licat
ion
of
mit
igat
ion
m
easu
res
for
wat
er q
ual
ity,
d
isch
arg
es
sho
uld
no
t im
pa
ct u
po
n
man
gro
ve
hab
itat
Rea
son
able
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Off
sho
re
Co
nst
ruct
ion
A
ctiv
itie
s
• D
ire
ct d
istu
rban
ce
to t
he
seab
ed
34
Low
• L
evel
of
crit
ical
lo
ss w
ill b
e d
eter
min
ed
on
ce
the
man
ag
emen
t u
nit
has
be
en
defi
ne
d
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
se
lect
ed
to r
ed
uce
th
e ri
sk o
f d
istu
rban
ce t
o B
PP
H w
her
e p
ract
icab
le
61
Low
• O
ffsh
ore
in
fras
tru
ctu
re
loca
tio
n d
oes
n
ot
sup
po
rt
BP
PH
• Tr
un
klin
e ro
ute
lo
cati
on
do
es
no
t o
verl
ie
sig
nifi
can
t ar
eas
of
BP
PH
(a s
mal
l ar
ea o
f se
ag
rass
w
ill b
e te
mp
ora
rily
im
pa
cte
d)
• O
ffsh
ore
an
d
nea
rsh
ore
in
fras
tru
ctu
re
loca
tio
n
con
tain
s lim
ite
d
BP
PH
Rea
son
able
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 41
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Nea
r-sh
ore
C
on
stru
ctio
n
Act
ivit
ies:
Co
nst
ruct
ion
of
PL
F an
d ro
ck
pla
cem
ent
for
MO
F b
reak
wat
er
wal
ls
• In
dir
ect
d
istu
rban
ce t
o t
he
seab
ed
fro
m
incr
ease
d
turb
idit
y,
sed
imen
tati
on
an
d
ligh
t at
ten
uat
ion
le
ad
ing
to lo
ss o
f B
PP
H in
ex
cee
den
ce o
f a
ccep
tab
le le
vels
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
OF
and
PL
F lo
cati
on
sel
ect
ed
to
red
uce
th
e ri
sk o
f lo
ss o
f B
PP
H
wh
ere
pra
ctic
able
• U
se g
rad
ed
rock
mat
eria
l wit
h lo
w
fin
es c
on
ten
t
• M
OF
and
PL
F m
itig
atio
n c
ove
red
u
nd
er t
he
CE
MP
61
Low
• N
ears
ho
re
infr
astr
uct
ure
lo
cati
on
co
nta
ins
limit
ed
B
PP
H
Rea
son
able
Su
rvey
dat
a av
aila
ble
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Nea
r-sh
ore
C
on
stru
ctio
n
Act
ivit
ies
Tru
nkl
ine
tren
chin
g an
d
tru
nkl
ine
stab
ilisa
tio
n
• In
dir
ect
d
istu
rban
ce t
o t
he
seab
ed
fro
m
incr
ease
d
turb
idit
y,
sed
imen
tati
on
an
d
ligh
t at
ten
uat
ion
le
ad
ing
to lo
ss o
f B
PP
H in
ex
cee
den
ce o
f a
ccep
tab
le le
vels
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• Tr
un
klin
e ro
ute
loca
tio
n s
ele
cte
d
to r
ed
uce
ris
ks t
o B
PP
H w
her
e p
ract
icab
le
• U
se e
ng
ine
ere
d ro
ck m
ater
ial w
ith
lo
w fi
nes
co
nte
nt
42
Mediu
m•
Imp
act
s to
BP
PH
h
ave
be
en
mo
del
led
co
nse
rvat
ivel
y d
ue
to
un
cert
ain
ty
• B
PP
H w
ill b
e te
mp
ora
ry
imp
act
ed
du
e to
tr
un
klin
e co
nst
ruct
ion
• A
shb
urt
on
m
ang
rove
h
abit
at is
of
hig
h
con
serv
atio
n
stat
us
Rea
son
able
Su
rvey
dat
a av
aila
ble
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
42 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Nea
r-sh
ore
C
on
stru
ctio
n
Act
ivit
ies
Tru
nkl
ine
sho
re
cro
ssin
g b
y tr
ench
ing
• D
istu
rban
ce o
f m
ang
rove
hab
itat
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
ain
tain
tid
al fl
ow
s to
eas
tern
en
d
of
lag
oo
n b
y u
se o
f te
mp
ora
ry g
ap
in s
and
spit
.
• C
on
tain
se
dim
ent
wit
hin
ro
ck
gro
yne
stru
ctu
res
to r
ed
uce
th
e ri
sk o
f p
ote
nti
al s
ed
imen
t sm
oth
erin
g im
pa
cts
on
man
gro
ves
• D
istu
rban
ce a
rea
to b
e la
nd
scap
ed
w
ith
th
e o
bje
ctiv
e o
f re
-in
stat
ing
to
form
er t
op
og
rap
hy
• U
se e
ng
ine
ere
d ro
ck m
ater
ial w
ith
re
du
ced
fin
es c
on
ten
t
• A
DS
DM
P s
pe
cifi
c to
tru
nkl
ine
tren
chin
g a
ctiv
itie
s w
ill b
e d
evel
op
ed
41
Hig
h•
Th
e fi
rst
tren
chin
g
act
ivit
y is
p
red
icte
d h
ave
smal
l im
pa
cts
on
ju
ven
ile
man
gro
ves
and
h
as a
ris
k ra
nki
ng
of
‘Me
diu
m’
• Tr
ench
ing
will
re
sult
in
dis
turb
ance
of
po
ten
tial
m
ang
rove
h
abit
at
• Tr
ench
ing
will
te
mp
ora
rily
b
lock
wat
er
mo
vem
ent
to
som
e ar
eas
of
the
Ash
bu
rto
n
Eas
t L
ag
oo
n
• R
epea
ted
tr
ench
ing
is
pre
dic
ted
to
dam
ag
e o
lder
an
d m
ore
es
tab
lish
ed
m
ang
rove
s,
ther
efo
re t
he
risk
ran
kin
g is
‘H
igh
’
• A
shb
urt
on
m
ang
rove
h
abit
at is
of
hig
h
con
serv
atio
n
stat
us
• M
icro
tun
nel
ling
is
th
e p
refe
rre
d
op
tio
n (
see
bel
ow
)
Rea
son
able
Su
rvey
dat
a av
aila
ble
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Nea
r-sh
ore
C
on
stru
ctio
n
Act
ivit
ies
Tru
nkl
ine
sho
re
cro
ssin
g b
y m
icro
tun
nel
ling
• N
o im
pa
ct
pre
dic
ted
• N
o m
ana
gem
ent
or
mit
igat
ion
m
easu
res
req
uir
ed
62
Low
• M
icro
tun
nel
ling
is
no
t an
tici
pat
ed
to
cau
se im
pa
cts
to
BP
PH
, in
clu
din
g
man
gro
ve
hab
itat
• T
he
entr
y an
d
exit
po
ints
of
the
mic
rotu
nn
ellin
g
hav
e a
low
BP
PH
ab
un
dan
ce
Rea
son
able
Su
rvey
dat
a av
aila
ble
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 43
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dis
char
ge
and
W
aste
fro
m
Off
sho
re
Co
nst
ruct
ion
• Tu
rbid
ity
and
se
dim
ent
chan
ges
• To
xici
ty t
o b
iota
• P
ote
nti
al
con
tam
inat
ion
w
ith
TP
H a
nd
ME
G.
• In
crea
sed
tu
rbid
ity,
sm
oth
erin
g,
red
uce
d d
isso
lve
d
oxy
gen
(D
O).
• B
ioa
ccu
mu
lati
on
o
f ch
emic
als
and
tr
ace
met
als
in
spe
cies
/ f
oo
d
chai
n.
• E
xce
ed
ence
of
Co
mm
on
wea
lth
R
eg
ula
tio
ns
on
T
PH
.
54
Ver
y
Low
• T
his
asp
ect
do
es
no
t in
clu
de
spill
s o
r a
ccid
enta
l re
leas
e o
f m
ater
ial
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge
• C
om
plia
nce
wit
h O
ffsh
ore
P
etro
leu
m a
nd
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
• Tr
eatm
ent
in c
om
plia
nce
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n f
or
the
Pre
ven
tio
n o
f P
ollu
tio
n f
rom
Sh
ips
(MA
RP
OL
73
/78
, An
nex
IV)
(ref
)
• Tr
eatm
ent
of
PW
wit
h t
he
ob
ject
ive
of
me
etin
g th
e re
qu
irem
ents
of
the
Off
sho
re P
etro
leu
m a
nd
G
reen
ho
use
Gas
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
as
th
ey a
pp
ly f
or
tim
e to
tim
e
• C
on
tro
lled
rele
ase
of
hyd
rote
st
wat
er t
o r
ed
uce
po
ten
tial
fo
r to
xici
ty im
pa
cts
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
62
Low
• O
ffsh
ore
in
fras
tru
ctu
re
loca
tio
ns
con
tain
lim
ite
d
BP
PH
Hig
h
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Co
nst
ruct
ion
Dis
char
ges
fr
om
On
sho
re
Co
nst
ruct
ion
• In
crea
sed
met
als
and
oth
er
con
tam
inan
ts.
• In
crea
sed
tu
rbid
ity,
sal
init
y,
nu
trie
nts
an
d al
gal
b
loo
ms
lea
din
g to
lo
ss o
r d
ama
ge
to
BP
PH
in
exce
ed
ence
of
acc
epta
ble
leve
ls.
54
Ver
y
Low
• T
his
asp
ect
do
es
no
t in
clu
de
spill
s o
r a
ccid
enta
l re
leas
e o
f m
ater
ial
• N
ears
ho
re o
utf
all l
oca
tio
n s
ele
cte
d
to r
ed
uce
ris
ks t
o B
PP
H w
her
e p
ract
icab
le
• M
ana
ge
dis
char
ges
by
taki
ng
into
a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
• M
on
ito
rin
g to
co
nfi
rm a
pp
licab
le
wat
er q
ual
ity
targ
ets
at m
ixin
g
zon
e b
ou
nd
ary
61
Low
• O
ffsh
ore
in
fras
tru
ctu
re
loca
tio
ns
con
tain
lim
ite
d
BP
PH
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sD
isch
arg
es
fro
m O
nsh
ore
O
per
atio
ns:
Nea
rsh
ore
d
isch
arg
e o
f w
aste
wat
er,
pro
cess
w
aste
wat
er,
con
tact
st
orm
wat
er a
nd
R
O b
rin
e.
• In
crea
sed
met
als
and
oth
er
con
tam
inan
ts.
• In
crea
sed
tu
rbid
ity,
sal
init
y,
nu
trie
nts
an
d al
gal
b
loo
ms
lea
din
g to
lo
ss o
r d
ama
ge
to
BP
PH
in
exce
ed
ence
of
acc
epta
ble
leve
ls.
• To
xici
ty t
o B
PP
H
54
Ver
y
Low
• T
his
asp
ect
do
es
no
t in
clu
de
spill
s o
r a
ccid
enta
l re
leas
e o
f m
ater
ial
• R
efer
to
Ch
apte
r 9
Tab
le 9
.14
fo
r su
rfa
ce w
ater
man
ag
emen
t an
d
mit
igat
ion
mea
sure
s
• E
nd
of
pip
e d
iffu
ser
loca
ted
at t
he
PL
F
• M
ixin
g zo
ne
loca
tio
n s
ele
cte
d to
re
du
ce r
isks
to
BP
PH
wh
ere
pra
ctic
able
• M
ana
ge
dis
char
ges
by
taki
ng
into
a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
• M
ixin
g zo
ne
bo
un
dar
ies
to b
e es
tab
lish
ed
and
mo
nit
ori
ng
to
ach
ieve
ap
plic
able
wat
er q
ual
ity
targ
ets
at m
ixin
g zo
ne
bo
un
dar
y
61
Low
• N
o B
PP
H a
t th
e p
oin
t o
f d
isch
arg
e an
d
wit
hin
th
e m
ixin
g
bo
un
dar
y
Rea
son
able
Mo
del
ling
co
nd
uct
ed
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
44 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sD
isch
arg
es
fro
m O
nsh
ore
O
per
atio
ns:
Dis
char
ge
of
PW
fro
m t
he
LN
G p
lan
t
• To
xici
ty t
o B
PP
H5
4V
ery
L
ow
• T
his
asp
ect
do
es
no
t in
clu
de
spill
s o
r a
ccid
enta
l re
leas
e o
f m
ater
ial
• N
ears
ho
re o
utf
all l
oca
tio
n s
ele
cte
d
to r
ed
uce
ris
ks t
o B
PP
H w
her
e p
ract
icab
le
• S
ele
ctio
n o
f o
utf
all l
oca
tio
n a
nd
d
iffu
ser
des
ign
fo
r a
de
qu
ate
dilu
tio
n a
nd
dis
per
sio
n o
f P
W
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge.
• Tr
eatm
ent
of
PW
wit
h t
he
ob
ject
ive
of
me
etin
g th
e re
qu
irem
ents
of
the
Off
sho
re P
etro
leu
m a
nd
G
reen
ho
use
Gas
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
as
th
ey a
pp
ly f
or
tim
e to
tim
e
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
• C
on
firm
ad
eq
ua
cy o
f d
iffu
ser
des
ign
an
d si
ze o
f m
ixin
g zo
ne
62
Low
• L
ow
ab
un
dan
ce
of
BP
PH
at
the
po
int
of
dis
char
ge
and
w
ith
in t
he
mix
ing
b
ou
nd
ary
• D
isch
arg
es f
rom
o
nsh
ore
o
per
atio
ns
will
b
e m
ana
ge
d to
co
mp
ly w
ith
re
leva
nt
Re
gu
lati
on
s (O
ffsh
ore
P
etro
leu
m a
nd
G
reen
ho
use
Gas
S
tora
ge
(En
viro
nm
ent)
R
eg
ula
tio
ns
20
09
)
Rea
son
able
Mo
del
ling
co
nd
uct
ed
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sD
isch
arg
e an
d
Was
te f
rom
O
ffsh
ore
O
per
atio
ns
• To
xici
ty t
o b
iota
.
• P
ote
nti
al
con
tam
inat
ion
w
ith
TP
H a
nd
ME
G
• In
crea
sed
tu
rbid
ity,
sm
oth
erin
g,
red
uce
d D
O
• B
ioa
ccu
mu
lati
on
o
f ch
emic
als
and
tr
ace
met
als
in
spe
cies
/ f
oo
d
chai
n
• E
xce
ed
ence
of
Co
mm
on
wea
lth
R
eg
ula
tio
ns
on
T
PH
54
Ver
y
Low
• T
his
asp
ect
do
es
no
t in
clu
de
spill
s o
r a
ccid
enta
l re
leas
e o
f m
ater
ial
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge
• C
om
plia
nce
wit
h O
ffsh
ore
P
etro
leu
m a
nd
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
• Tr
eatm
ent
in c
om
plia
nce
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n f
or
the
Pre
ven
tio
n o
f P
ollu
tio
n f
rom
Sh
ips
(MA
RP
OL
73
/78
, An
nex
IV)
(ref
)
• C
on
tro
lled
rele
ase
of
hyd
rote
st
wat
er t
o r
ed
uce
po
ten
tial
fo
r to
xici
ty im
pa
cts
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
62
Low
• O
ffsh
ore
in
fras
tru
ctu
re
loca
tio
ns
con
tain
lim
ite
d
BP
PH
• D
isch
arg
es a
nd
w
aste
fro
m
off
sho
re
op
erat
ion
s w
ill
be
man
ag
ed
to
com
ply
wit
h
rele
van
t C
on
ven
tio
ns
and
R
eg
ula
tio
ns
(Off
sho
re
Pet
role
um
an
d
Gre
enh
ou
se G
as
Sto
rag
e (E
nvi
ron
men
t)
Re
gu
lati
on
s 2
00
9, M
AR
PO
L)
Hig
h
Exc
elle
nt
surv
ey
dat
a an
d
mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sV
esse
l M
ove
men
ts•
Toxi
city
eff
ect
s o
f an
ti-f
ou
lan
ts o
n
BP
PH
• In
tro
du
ctio
n o
f m
arin
e p
ests
34
Low
• Fo
r th
is r
isk
asse
ssm
ent
the
focu
s w
as o
n t
he
intr
od
uct
ion
of
no
n-i
nd
igen
ou
s sp
eci
es
• T
he
risk
as
sess
men
t w
as
bas
ed
on
in
tro
du
ced
sp
eci
es’
sub
seq
uen
t im
pa
ct o
n
mar
ine
BP
PH
an
d b
iod
iver
sity
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h t
he
Inte
rnat
ion
al C
on
ven
tio
n o
n t
he
Co
ntr
ol o
f H
arm
ful A
nti
-fo
ulin
g
Sys
tem
s o
n S
hip
s as
mo
nit
ore
d b
y A
QIS
53
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Exp
ert
inve
stig
atio
n
stu
die
s
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
s•
Dis
char
ge
of
bal
last
wat
er•
All
vess
els
un
der
th
e co
ntr
ol o
f th
e P
rop
on
ent
will
co
mp
ly w
ith
AQ
IS
bal
last
wat
er d
isch
arg
e re
qu
irem
ents
(A
ust
ralia
n B
alla
st
Wat
er M
ana
gem
ent
Re
qu
irem
ents
V
4 2
00
8)
53
Low
• V
esse
ls w
ill
com
ply
wit
h t
he
req
uir
emen
ts o
f A
QIS
Hig
h
Exp
ert
inve
stig
atio
n
stu
die
s
No
t A
pp
licab
leS
ect
ion
8.3
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 45
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sL
eaks
an
d S
pill
s•
Mo
rtal
ity
of
BP
PH
in
Ho
ole
y C
reek
re
sult
ing
fro
m le
ak
or
spill
fro
m L
NG
p
roce
ssin
g p
lan
t
24
Mediu
m•
Th
is r
isk
asse
ssm
ent
assu
mes
a
wo
rst-
case
m
ajo
r sp
ill o
f co
nd
ensa
te,
po
ten
tial
ly
imp
act
ing
on
re
gio
nal
ly
sig
nifi
can
t m
ang
rove
h
abit
at
• Im
ple
men
tati
on
, wh
ere
pra
ctic
able
, of
rele
van
t A
ust
ralia
S
tan
dar
ds
and
Co
des
in t
he
init
ial
des
ign
inte
gri
ty, p
roce
ss a
nd
uti
lity
eq
uip
men
t, m
ater
ials
han
dlin
g an
d
op
erat
ing
and
mai
nte
nan
ce
pro
ced
ure
s w
ith
th
e o
bje
ctiv
e o
f re
du
cin
g sp
ills
• A
DM
P a
pp
rove
d M
OP
P w
ill b
e im
ple
men
ted
and
rele
van
t p
erso
nn
el w
ill b
e tr
ain
ed
in
acc
ord
ance
wit
h t
he
MO
PP
• C
lean
up
and
rem
ed
iati
on
met
ho
ds
will
be
imp
lem
ente
d in
th
e ev
ent
of
a sp
ill
• M
on
ito
rin
g as
fo
r 1.
4 P
lace
men
t o
f d
red
ge
mat
eria
l on
sho
re
45
Ver
y
Low
• P
rob
abili
ty o
f la
rge
leak
s o
r sp
ills
fro
m
on
sho
re
infr
astr
uct
ure
is
low
• T
he
abili
ty t
o
rap
idly
co
nta
in a
le
ak o
r sp
ill f
rom
o
nsh
ore
in
fras
tru
ctu
re
• C
on
den
sate
is
toxi
c to
m
ang
rove
se
ed
ling
s, b
ut
evap
ora
tes
mo
re
rap
idly
th
an
cru
de
oil
• D
evel
op
men
t o
f th
e M
OP
P
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
8.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sL
eaks
an
d
Sp
ills:
Nea
r-sh
ore
sp
ills
• M
ort
alit
y o
f B
PP
H
du
e to
ref
uel
ing
w
ork
bo
ats
at t
he
MO
F, c
on
den
sate
sp
ill d
uri
ng
loa
din
g
at P
LF
• A
s fo
r o
nsh
ore
sp
ills
ente
rin
g th
e m
arin
e en
viro
nm
ent,
ab
ove
15
Mediu
m•
Pro
bab
ility
of
larg
e le
aks
or
spill
s fr
om
n
ears
ho
re
infr
astr
uct
ure
is
low
• T
he
abili
ty t
o
rap
idly
co
nta
in a
le
ak o
r sp
ill f
rom
n
ears
ho
re
infr
astr
uct
ure
• C
on
den
sate
is
toxi
c to
m
ang
rove
se
ed
ling
s, b
ut
evap
ora
tes
mo
re
rap
idly
th
an
cru
de
oil
• D
evel
op
men
t an
d
imp
lem
enta
tio
n
of
the
MO
PP
• A
shb
urt
on
m
ang
rove
h
abit
at is
of
hig
h
con
serv
atio
n
stat
us
Se
ctio
n 8
.3
Wheatstone Project Executive Summary
46 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Op
erat
ion
sL
eaks
an
d
Sp
ills:
Off
sho
re s
pill
s
• L
oss
of
wel
l co
ntr
ol r
esu
ltin
g in
lo
ss o
f B
PP
H
24
Mediu
m•
Th
is r
isk
asse
ssm
ent
assu
mes
a
wo
rst-
case
m
ajo
r sp
ill o
f co
nd
ensa
te,
po
ten
tial
ly
imp
act
ing
on
re
gio
nal
ly
sig
nifi
can
t m
ang
rove
h
abit
at
• A
s fo
r o
nsh
ore
sp
ills
ente
rin
g th
e m
arin
e en
viro
nm
ent
and
• T
he
follo
win
g m
easu
res
will
be
use
d d
uri
ng
dri
llin
g a
ctiv
itie
s to
re
du
ce t
he
risk
of
a s
ub
sea
blo
wo
ut:
Pro
visi
on
of
nu
mer
ou
s p
rim
ary
• an
d se
con
dar
y b
arri
ers
(su
bse
a sa
fety
val
ves,
Pro
du
ctio
n
Mas
ter
Val
ve, S
wab
Val
ve, T
ree
Cu
p, P
rod
uct
ion
Sh
utd
ow
n
Val
ve, P
rod
uct
ion
Win
g V
alve
et
c)
Wel
l bo
re s
tab
ility
mo
del
ing
for
• re
serv
oir
an
d o
verb
urd
en
form
atio
ns
Sp
eci
fic
and
app
rove
d co
ntr
ols
•
for
wo
rk-o
ver
or
re-e
ntr
y o
per
atio
ns
Exc
lusi
on
zo
ne
aro
un
d
• w
ellh
ead
s w
ith
no
an
cho
rin
g in
ex
clu
sio
n a
rea
gaz
ette
d an
d o
n
nav
igat
ion
al c
har
ts
25
Low
• P
rob
abili
ty o
f la
rge
leak
s o
r sp
ills
fro
m
off
sho
re
infr
astr
uct
ure
is
low
• D
evel
op
men
t an
d
imp
lem
enta
tio
n
of
the
MO
PP
• T
he
larg
e d
ista
nce
of
the
pla
tfo
rm f
rom
in
tert
idal
BP
PH
Se
ctio
n 8
.3
Ben
thic
P
rim
ary
P
rodu
cer
Habit
at
(BP
PH
)
Ad
dit
ive
Eff
ect
s•
Th
e su
m o
f al
l p
ote
nti
al
Pro
ject
-at
trib
uta
ble
im
pa
cts
fro
m a
ll P
roje
ct p
has
es
and
asp
ect
s
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ee
abo
ve f
or
pro
po
sed
m
ana
gem
ent/
mit
igat
ion
mea
sure
s3
2H
igh
• T
he
risk
ran
kin
g
of
the
ad
dit
ive
effe
cts
of
all
Pro
ject
asp
ect
s is
det
erm
ine
d b
y th
e h
igh
est
risk
ra
nki
ng
of
any
ind
ivid
ual
asp
ect
Low
No
t A
pp
licab
leS
ect
ion
8.3
Mari
ne
Fau
na
Op
erat
ion
sP
hys
ical
P
rese
nce
of
Mar
ine
Infr
astr
uct
ure
• C
han
ge
to
beh
avio
ur
of
pro
tect
ed
mar
ine
fau
na
(in
clu
din
g
seab
ird
s), i
mp
act
s o
n m
igra
tory
p
atte
rns,
nes
tin
g
and
fee
din
g, a
nd
lo
ss a
nd
d
istu
rban
ce t
o
hab
itat
s
• C
han
ge
in t
he
abu
nd
ance
an
d
div
ersi
ty o
f p
rote
cte
d m
arin
e fa
un
a fr
om
th
e cr
eati
on
of
arti
fici
al h
abit
at
42
Mediu
m•
Ris
k as
sess
men
t d
oes
no
t re
late
to
sh
ipp
ing
, ve
ssel
s o
r co
nst
ruct
ion
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
se
lect
ed
to r
ed
uce
ris
ks t
o h
abit
at
crit
ical
(n
esti
ng
, fe
ed
ing
and
ca
lvin
g ar
eas)
fo
r m
arin
e fa
un
a su
ch a
s H
um
pb
ack
Wh
ales
, D
ug
on
gs
and
turt
les
• A
eria
l, b
oat
an
d la
nd
bas
ed
surv
eys
to id
enti
fy a
nd
map
cri
tica
l hab
itat
fo
r m
arin
e m
amm
als
and
turt
les
pri
or
to c
on
stru
ctio
n
54
Ver
y
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
the
vici
nit
y o
f n
ears
ho
re
infr
astr
uct
ure
• N
ears
ho
re
infr
astr
uct
ure
lo
cati
on
re
pre
sen
ts a
ve
ry s
mal
l am
ou
nt
of
avai
lab
le h
abit
at
Rea
son
able
to
Hig
h
Sh
ort
-ter
m a
nd
so
me
lon
g-t
erm
m
on
ito
rin
g d
ata
avai
lab
le
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 47
Mari
ne
Fau
na
Op
erat
ion
sP
hys
ical
P
rese
nce
of
Mar
ine
Infr
astr
uct
ure
• C
han
ges
in
abu
nd
ance
fo
r so
me
fish
tax
a
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
se
lect
ed
to r
ed
uce
like
liho
od
of
fish
a
gg
reg
atin
g in
hab
itat
cri
tica
l (n
esti
ng
, fe
ed
ing
and
calv
ing
ar
eas)
fo
r m
arin
e fa
un
a
63
Ver
y
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
the
vici
nit
y o
f n
ears
ho
re
infr
astr
uct
ure
• N
ears
ho
re
infr
astr
uct
ure
lo
cati
on
re
pre
sen
ts a
ve
ry s
mal
l am
ou
nt
of
avai
lab
le h
abit
at
Low
Un
cert
ain
ties
su
rro
un
din
g
po
pu
lati
on
re
spo
nse
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
48 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
Dre
dg
ing
• E
ntr
ain
men
t o
f m
arin
e fa
un
a (p
arti
cula
rly
juve
nile
tu
rtle
s)
rest
ing
on
th
e se
abe
d in
th
e d
red
ge
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• P
rio
r to
co
mm
ence
men
t o
f d
red
gin
g an
d d
red
ge
mat
eria
l m
ana
gem
ent
act
ivit
ies
sele
cte
d
crew
will
re
ceiv
e tr
ain
ing
, wh
ich
w
ill in
clu
de
det
ails
on
pro
ced
ure
s in
th
e ev
ent
turt
le s
igh
tin
g, i
nju
ry
and
/or
dea
th
• W
hen
op
erat
ing
wit
h le
ss t
han
five
m
etre
s u
nd
er k
eel
cle
aran
ce, t
he
dre
dg
e w
ill in
itia
lly m
ove
slo
wly
th
rou
gh
th
e ar
ea b
efo
re
com
men
cin
g d
red
gin
g so
th
at t
he
no
ise
and
vib
rati
on
dis
turb
mar
ine
turt
les
in t
he
vici
nit
y an
d
enco
ura
ge
them
to
leav
e. T
his
will
o
nly
be
app
lied
on
dre
dg
ing
in n
ew
area
s an
d n
ot
on
ce t
he
wo
rk a
rea
has
be
en e
stab
lish
ed
• D
red
ge
pu
mp
s w
ill b
e st
op
pe
d as
so
on
as
pra
ctic
able
aft
er
com
ple
tio
n o
f d
red
gin
g an
d w
her
e re
aso
nab
ly p
ract
icab
le t
he
dra
g
hea
d w
ill r
emai
n w
ith
in f
ou
r m
etre
s o
f th
e se
abe
d u
nti
l th
e d
red
ge
pu
mp
is s
top
pe
d
• M
ana
gem
ent
of
ceta
cean
in
tera
ctio
ns
will
be
in a
cco
rdan
ce
wit
h t
he
req
uir
emen
ts s
pe
cifi
ed
u
nd
er t
he
Au
stra
lian
Nat
ion
al
Gu
idel
ines
fo
r W
hal
e an
d D
olp
hin
W
atch
ing
(20
05
)
• R
elea
se o
f h
ealt
hy
entr
ain
ed
tu
rtle
s b
ack
to
th
e m
arin
e en
viro
nm
ent
and
con
tact
th
e D
EC
if
an
inju
red
turt
le is
co
llect
ed
afte
r b
ein
g en
trai
ne
d
• In
th
e ev
ent
of
turt
le m
ort
alit
y in
cid
ent,
as
a re
sult
of
entr
ain
men
t d
uri
ng
dre
dg
ing
, rev
isio
n o
f ex
isti
ng
man
ag
emen
t m
easu
res
will
be
inve
stig
ate
d to
asc
erta
in
wh
eth
er a
dd
itio
nal
mea
sure
s m
ay
be
pu
t in
pla
ce t
o r
ed
uce
th
e p
ote
nti
al f
or
such
inci
den
ts t
o
occ
ur
in t
he
futu
re
(Co
nt’
d)
43
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
nea
r sh
ore
w
ater
s w
her
e d
red
gin
g w
ill
occ
ur
• L
ow
en
trai
nm
ent
rate
du
rin
g
dre
dg
ing
ca
mp
aig
ns
• A
do
pti
on
of
mit
igat
ion
m
easu
res
such
as
mar
ine
fau
na
ob
serv
ers
and
ex
clu
sio
n z
on
es
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 49
• H
um
pb
ack
s an
d D
ug
on
g
ob
serv
atio
ns
thro
ug
ho
ut
the
wo
rks
as p
art
of
the
mar
ine
mam
mal
m
ana
gem
ent
pro
ced
ure
s
• A
ny
inci
den
t in
volv
ing
the
inju
ry o
r m
ort
alit
y o
f tu
rtle
s w
ill b
e re
po
rte
d
to t
he
DE
C a
nd
DE
WH
A w
ith
in 4
8
ho
urs
of
the
inci
den
t o
ccu
rrin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
Dre
dg
ing
• L
oss
of
or
dis
turb
ance
to
cr
itic
al h
abit
at
asso
ciat
ed
wit
h
pro
tect
ed
mar
ine
fau
na
• P
ote
nti
al t
o
dir
ect
ly im
pa
ct
mar
ine
fau
na
• D
istu
rban
ce a
nd
av
oid
ance
of
area
b
y p
rote
cte
d
mar
ine
fau
na
• H
eig
hte
ne
d
com
mu
nit
y co
nce
rn
• Im
pa
cts
on
loca
l to
uri
sm o
per
ato
rs
33
Mediu
m•
Fora
gin
g h
abit
at
for
turt
les
assu
me
d to
be
mo
st c
riti
cal
hab
itat
at
risk
• A
sses
sed
the
likel
iho
od
of
loss
o
r d
istu
rban
ce
to c
riti
cal h
abit
at
imp
ort
ant
to
pro
tect
ed
m
arin
e fa
un
a
• R
efer
to
DS
DM
P f
or
com
ple
te li
st o
f m
itig
atio
n m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
BP
PH
• S
ele
ctio
n o
f n
avig
atio
n c
han
nel
, M
OF
and
pla
cem
ent
site
s to
re
du
ce
risk
s to
hab
itat
cri
tica
l (n
esti
ng
, fe
ed
ing
and
calv
ing
area
s) f
or
mar
ine
fau
na
such
as
Hu
mp
ba
cks,
D
ug
on
gs
and
turt
les
• D
red
gin
g an
d m
ater
ial p
lace
men
t w
ill b
e co
nd
uct
ed
du
rin
g
favo
ura
ble
wea
ther
, tid
e an
d
curr
ent
con
dit
ion
s, a
s fa
r as
re
aso
nab
ly p
ract
icab
le, t
o r
ed
uce
th
e ri
sk o
f im
pa
ct t
o m
arin
e fa
un
a w
hile
in c
lose
pro
xim
ity
to s
ensi
tive
ar
eas
54
Ver
y
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
nea
r sh
ore
w
ater
s
• N
o f
ora
gin
g
hab
itat
s (e
.g.
sea
gra
ss b
ed
s)
for
turt
les
and
D
ug
on
gs
will
be
per
man
entl
y d
ama
ge
d as
a
resu
lt o
f d
red
gin
g
• C
riti
cal h
abit
at
for
mar
ine
mam
mal
s an
d
turt
les
do
es n
ot
occ
ur
in t
he
nea
rsh
ore
in
fras
tru
ctu
re
loca
tio
n
• C
on
stru
ctio
n is
a
tem
po
rary
a
ctiv
ity
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.5
Ap
pen
dix
S
1
Mari
ne
Fau
na
Co
nst
ruct
ion
Dre
dg
ing
• L
oss
of
or
dis
turb
ance
to
d
esig
nat
ed
n
ears
ho
re n
urs
ery
hab
itat
fo
r p
raw
ns
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
s ab
ove
42
Mediu
m•
Dis
turb
ance
to
p
raw
n n
urs
ery
hab
itat
, su
ch a
s se
ag
rass
be
ds,
is
pre
dic
ted
to b
e sh
ort
ter
m;
reco
very
is
pre
dic
ted
to
occ
ur
afte
r ce
ssat
ion
of
dre
dg
ing
• O
ther
imp
ort
ant
nu
rser
y h
abit
at,
such
as
lag
oo
ns
and
cre
eks,
will
n
ot
be
dir
ect
ly
imp
act
ed
• C
on
stru
ctio
n is
a
tem
po
rary
a
ctiv
ity
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
50 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
Co
nst
ruct
ion
A
ctiv
itie
s (m
arin
e):
Co
nst
ruct
ion
of
PL
F an
d
tru
nkl
ines
, ro
ck
pla
cem
ent
and
an
cho
r p
lace
men
t
• L
oss
of,
or
dis
turb
ance
to
, h
abit
at c
riti
cal t
o
mar
ine
fau
na
fro
m
seab
ed
d
istu
rban
ce
du
rin
g n
ears
ho
re
con
stru
ctio
n
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ele
ctio
n o
f n
avig
atio
n c
han
nel
, M
OF
and
pla
cem
ent
site
s to
re
du
ce
risk
s to
hab
itat
cri
tica
l (n
esti
ng
, fe
ed
ing
and
calv
ing
area
s) f
or
mar
ine
fau
na
such
as
Hu
mp
ba
cks,
D
ug
on
gs
and
turt
les
• C
on
stru
ctio
n w
ill c
om
ply
wit
h t
he
OP
GG
S A
ct (C
th)
and
the
Pet
role
um
(S
ub
mer
ge
d L
and
s)
(Man
agem
ent
of
En
viro
nm
ent)
R
eg
ula
tio
ns
199
9 (a
s am
end
ed
2
00
5)
as t
hey
ap
ply
fro
m t
ime
to
tim
e
52
Low
• T
he
pro
po
sed
ch
ann
el, M
OF
and
pla
cem
ent
site
s d
o n
ot
trav
erse
or
sup
po
rt c
riti
cal
hab
itat
fo
r m
arin
e m
amm
als
and
tu
rtle
s
• M
arin
e m
amm
als
and
tu
rtle
occ
ur
in
low
den
siti
es in
ar
eas
pro
po
sed
fo
r th
e P
LF
and
tr
un
klin
e
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Mari
ne
Fau
na
Co
nst
ruct
ion
Co
nst
ruct
ion
A
ctiv
itie
s (m
arin
e):
Inst
alla
tio
n o
f al
l off
sho
re
infr
astr
uct
ure
• L
oss
of,
or
dis
turb
ance
to
, h
abit
at c
riti
cal t
o
mar
ine
fau
na
fro
m
seab
ed
d
istu
rban
ce
du
rin
g o
ffsh
ore
co
nst
ruct
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ele
ctio
n o
f n
avig
atio
n c
han
nel
, M
OF
and
pla
cem
ent
site
s to
re
du
ce
risk
s to
hab
itat
cri
tica
l (n
esti
ng
, fe
ed
ing
and
calv
ing
area
s) f
or
mar
ine
fau
na
such
as
Hu
mp
ba
cks,
D
ug
on
gs
and
turt
les
• Im
ple
men
tin
g an
ap
pro
ved
DE
MP
in
acc
ord
ance
wit
h t
he
OP
GG
S A
ct
(Cth
) an
d th
e P
etro
leu
m
(Su
bm
erg
ed
Lan
ds)
(M
anag
emen
t o
f E
nvi
ron
men
t) R
eg
ula
tio
ns
199
9
(as
amen
de
d 2
00
5)
as t
hey
ap
ply
fr
om
tim
e to
tim
e
54
Ver
y
Low
• T
he
loca
tio
n o
f th
e o
ffsh
ore
in
fras
tru
ctu
re
do
es n
ot
sup
po
rt
crit
ical
hab
itat
fo
r m
arin
e m
amm
als
or
turt
les
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 51
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Ves
sel
Mo
vem
ents
• In
jury
or
fata
litie
s to
Pro
tect
ed
M
arin
e Fa
un
a d
ue
to in
tera
ctio
ns
wit
h v
esse
ls
• C
han
ges
to
m
igra
tory
p
atte
rns,
fo
rag
ing
, b
ree
din
g
beh
avio
ur
of
pro
tect
ed
fau
na
as
a re
sult
of
dis
turb
ance
• H
eig
hte
ne
d
com
mu
nit
y/
reg
ula
tor
con
cern
42
Mediu
m•
Co
nsi
der
s ca
pit
al a
nd
m
ain
ten
ance
d
red
gin
g
• R
isk
asse
ssm
ent
con
sid
ers
it
alm
ost
cer
tain
th
at, o
ver
the
life
of
the
Pro
ject
, th
ere
will
be
inte
ract
ion
wit
h
pro
tect
ed
m
arin
e fa
un
a
• T
he
con
seq
uen
ce
ran
kin
g
con
sid
ere
d th
e fu
ll 2
5 M
TP
A
LN
G p
lan
t ca
pa
city
an
d th
e m
ost
sen
siti
ve
spe
cies
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• T
he
follo
win
g m
ana
gem
ent
mea
sure
s w
ill b
e ap
plie
d d
uri
ng
co
nst
ruct
ion
an
d o
per
atio
n o
f n
ears
ho
re in
fras
tru
ctu
re:
Pri
or
to t
he
com
men
cem
ent
of
• d
red
gin
g se
lect
ed
crew
will
re
ceiv
e tr
ain
ing
, wh
ich
will
in
clu
de
det
ails
on
pro
ced
ure
s in
th
e ev
ent
of
sig
hti
ng
, in
jury
an
d/
or
dea
th o
f P
rote
cte
d M
arin
e Fa
un
a (e
.g. H
um
pb
ack
s,
Du
go
ng
, tu
rtle
s, d
olp
hin
s)
All
sig
hti
ng
s o
f H
um
pb
ack
s an
d
• D
ug
on
g th
at r
esu
lt in
m
ana
gem
ent
act
ion
s b
ein
g
imp
lem
ente
d w
ill b
e re
cord
ed
Th
e ve
ssel
mas
ter
will
mai
nta
in
• a
log
of
ob
serv
ed
in-w
ater
in
cid
ents
or
inju
red
/dea
d tu
rtle
s an
d m
arin
e m
amm
als
Hu
mp
ba
cks
and
Du
go
ng
•
ob
serv
atio
ns
and
resp
on
se
pro
ced
ure
s, in
clu
din
g n
ot
com
men
cin
g d
red
gin
g o
r p
lace
men
t if
wh
ales
or
Du
go
ng
s ar
e si
gh
ted
wit
hin
a 3
00
m
ob
serv
atio
n z
on
e an
d ce
asin
g
dre
dg
ing
act
ivit
ies
if w
hal
es o
r D
ug
on
gs
ente
r a
100
m e
xclu
sio
n
zon
e
A t
rain
ed
crew
mem
ber
will
•
mai
nta
in a
loo
kou
t, d
uri
ng
d
aylig
ht
ho
urs
, fo
r H
um
pb
ack
s an
d D
ug
on
gs
wh
ile d
red
ge
are
mo
vin
g to
an
d fr
om
th
e d
red
ge
area
to
dre
dg
e m
ater
ial
pla
cem
ent
site
s. If
sig
hte
d,
dir
ect
ion
/sp
ee
d w
ill b
e a
dju
ste
d
to r
ed
uce
th
e lik
elih
oo
d o
f im
pa
ct (w
ith
in t
he
safe
ty
con
stra
ints
of
the
vess
el)
An
y in
cid
ent
invo
lvin
g th
e in
jury
•
or
mo
rtal
ity
of
turt
les
will
be
rep
ort
ed
to t
he
DE
C a
nd
DE
WH
A
wit
hin
48
ho
urs
of
the
inci
den
t o
ccu
rrin
g
43
Low
• V
esse
l sp
ee
ds
will
be
reg
ula
ted
• T
he
loca
tio
n o
f th
e p
rop
ose
d
nav
igat
ion
ch
ann
el d
oes
no
t su
pp
ort
hig
h
den
siti
es o
f m
arin
e fa
un
a (b
ase
d o
n a
eria
l an
d b
oat
bas
ed
su
rvey
s). T
urt
le
den
siti
es a
re
hig
hes
t o
ver
off
sho
re r
eef
s
• P
rese
nce
of
larg
e n
um
ber
s o
f H
um
pb
ack
s is
se
aso
nal
• T
he
maj
ori
ty o
f H
um
pb
ack
s re
mai
n in
d
eep
wat
er
bey
on
d th
e n
ears
ho
re
con
stru
ctio
n
loca
tio
n
• U
se o
f m
itig
atio
n
mea
sure
s su
ch
as m
arin
e fa
un
a o
bse
rver
s an
d
excl
usi
on
zo
nes
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
S
1
2.0
A
pp
end
ix
O6
Wheatstone Project Executive Summary
52 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Ves
sel
Mo
vem
ents
• In
tro
du
ctio
n o
f m
arin
e p
est
spe
cies
to
th
e m
arin
e en
viro
nm
ent
• L
oss
of
bio
div
ersi
ty
34
Low
• A
sses
sed
in
En
viro
nm
enta
l S
cop
ing
D
ocu
men
t w
ith
b
oth
BP
PH
an
d
Mar
ine
Fau
na
as
the
rece
pto
r
• Fo
r th
is r
isk
asse
ssm
ent
the
focu
s w
as o
n t
he
intr
od
uct
ion
of
no
n-i
nd
igen
ou
s sp
eci
es
• T
he
risk
as
sess
men
t w
as
bas
ed
on
in
tro
du
ced
sp
eci
es’
sub
seq
uen
t im
pa
ct o
n
mar
ine
BP
PH
an
d b
iod
iver
sity
• P
ub
lic a
nd
fi
sher
ies
con
cern
s w
ere
con
sid
ere
d as
p
art
of
the
asse
ssm
ent
• P
ote
nti
al f
or
re-a
lign
men
t o
f L
EP
b
ou
nd
arie
s
• Im
ple
men
t In
tro
du
ced
Mar
ine
Pes
t (I
MP
) ri
sk a
sses
smen
ts, w
ith
th
e o
bje
ctiv
e o
f as
sess
men
t al
l co
nst
ruct
ion
ves
sels
en
teri
ng
the
nea
rsh
ore
are
a
Ves
sels
ass
esse
d as
hig
h o
r •
un
cert
ain
ris
k w
ill b
e in
spe
cte
d
pri
or
to m
ob
ilisa
tio
n
If IM
P a
re f
ou
nd
vess
els
will
be
• cl
ean
ed
pri
or
to m
ob
ilisa
tio
n
If v
esse
l on
sit
e is
fo
un
d to
hav
e •
IMP,
su
rvey
s w
ill b
e co
nd
uct
ed
to
det
erm
ine
if f
urt
her
act
ion
is
req
uir
ed
All
vess
els
un
der
th
e co
ntr
ol o
f •
the
Pro
po
nen
t w
ill c
om
ply
wit
h
AQ
IS b
alla
st w
ater
dis
char
ge
req
uir
emen
ts (
Au
stra
lian
B
alla
st W
ater
Man
ag
emen
t R
eq
uir
emen
ts V
4 2
00
8)
53
Low
• W
ill r
ed
uce
th
e ri
sk f
or
intr
od
uci
ng
m
arin
e p
ests
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 53
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Ves
sel
Mo
vem
ents
• In
tro
du
ctio
n o
f d
isea
ses
and
p
ath
og
ens
to
aq
ua
cult
ure
o
per
atio
ns
and
co
mm
erci
al a
nd
re
crea
tio
nal
fi
sher
ies
• L
oss
of
bio
div
ersi
ty
• B
rea
ch o
f m
arin
e b
iose
curi
ty
34
Low
• A
sses
sed
in
En
viro
nm
enta
l S
cop
ing
D
ocu
men
t w
ith
b
oth
BP
PH
an
d
Mar
ine
Fau
na
as
the
rece
pto
r
• Fo
r th
is r
isk
asse
ssm
ent
the
focu
s w
as o
n t
he
intr
od
uct
ion
of
no
n-i
nd
igen
ou
s sp
eci
es
• T
he
risk
as
sess
men
t w
as
bas
ed
on
in
tro
du
ced
sp
eci
es’
sub
seq
uen
t im
pa
ct o
n
mar
ine
BP
PH
an
d b
iod
iver
sity
• P
ub
lic a
nd
fi
sher
ies
con
cern
s w
ere
con
sid
ere
d as
p
art
of
the
asse
ssm
ent
• P
ote
nti
al f
or
re-a
lign
men
t o
f L
EP
b
ou
nd
arie
s
• Im
ple
men
t in
tro
du
ced
mar
ine
pes
t (I
MP
) ri
sk a
sses
smen
ts, w
ith
th
e o
bje
ctiv
e o
f as
sess
men
t al
l co
nst
ruct
ion
ves
sels
en
teri
ng
the
nea
rsh
ore
are
a
• V
esse
ls a
sses
sed
as h
igh
or
un
cert
ain
ris
k w
ill b
e in
spe
cte
d
pri
or
to m
ob
ilisa
tio
n
• If
IMP
are
fo
un
d ve
ssel
s w
ill b
e cl
ean
ed
pri
or
to m
ob
ilisa
tio
n
• If
ves
sel o
n s
ite
is f
ou
nd
to h
ave
IMP,
su
rvey
s w
ill b
e co
nd
uct
ed
to
det
erm
ine
if f
urt
her
act
ion
is
req
uir
ed
• A
ll ve
ssel
s u
nd
er t
he
con
tro
l of
the
Pro
po
nen
t w
ill c
om
ply
wit
h A
QIS
b
alla
st w
ater
dis
char
ge
req
uir
emen
ts (
Au
stra
lian
Bal
last
W
ater
Man
ag
emen
t R
eq
uir
emen
ts
V4
20
08
)
• T
he
Pro
po
nen
t w
ill u
nd
erta
ke
mar
ine
pes
t m
on
ito
rin
g an
d ap
ply
ri
sk m
itig
atio
n in
rel
atio
n t
o
bio
secu
rity
th
at c
on
sid
ers
Dep
artm
ent
of
Fis
her
ies
(Do
F)
pro
toco
ls a
nd
pro
ced
ure
s an
d
the
spe
cifi
c re
qu
irem
ents
of
th
e P
roje
ct
25
Low
• W
ill r
ed
uce
th
e ri
sk f
or
intr
od
uci
ng
m
arin
e p
ests
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
54 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Incr
ease
d
Re
crea
tio
nal
P
ress
ure
(F
ish
ing
, B
oat
ing
and
Is
lan
d A
cces
s)
• O
verfi
shin
g o
f fi
sh
sto
ck, r
esu
ltin
g in
st
ock
de
clin
e,
red
uct
ion
in
abu
nd
ance
an
d
po
pu
lati
on
hea
lth
, al
tere
d tr
op
hic
le
vel,
po
ten
tial
tr
op
hic
cas
cad
e
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
th
e M
FM
P
• To
re
du
ce t
he
po
ten
tial
fo
r o
verfi
shin
g o
ccu
rrin
g in
th
e P
roje
ct a
rea
, th
e fo
llow
ing
act
ion
m
ay b
e im
ple
men
ted
:
Info
rm P
roje
ct s
taff
/co
ntr
act
ors
•
of
recr
eati
on
al fi
shin
g
Re
gu
lati
on
s
Th
e P
rop
on
ent
will
wo
rk w
ith
•
the
Do
F to
re
du
ce p
ote
nti
al r
isks
to
th
e ex
isti
ng
recr
eati
on
al
fish
ery
Re
crea
tio
nal
bo
ats
and
•
recr
eati
on
al v
ehic
les
will
no
t b
e p
erm
itte
d w
ith
in t
he
wo
rkfo
rce
acc
om
mo
dat
ion
vill
ag
e o
r to
tr
avel
on
th
e a
cces
s ro
ad
fro
m
On
slo
w R
oa
d
Beh
avio
ur
stan
dar
ds
to b
e •
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in a
Re
crea
tio
n C
od
e o
f C
on
du
ct. C
on
stru
ctio
n
wo
rker
s w
ill b
e as
ked
to s
ign
th
e C
od
e o
f C
on
du
ct
A c
om
mu
nit
y fe
ed
ba
ck
• p
roce
du
re w
ill b
e es
tab
lish
ed
w
her
eby
any
com
pla
ints
fro
m
the
com
mu
nit
y ab
ou
t u
na
ccep
tab
le b
ehav
iou
r fr
om
co
nst
ruct
ion
wo
rker
s w
ill b
e in
vest
igat
ed
and
, wh
ere
ne
cess
ary,
act
ion
tak
en
33
Mediu
m•
An
incr
ease
in
the
leve
l of
recr
eati
on
al
fish
ing
act
ivit
y
• A
co
de
of
con
du
ct w
ill b
e d
evel
op
ed
to
red
uce
th
e im
pa
ct o
f fi
sher
s o
n lo
cal fi
sh
sto
cks
• D
iffi
cult
to
p
red
ict
the
po
ten
tial
fish
ing
p
ress
ure
as
soci
ate
d w
ith
la
rge
nu
mb
ers
of
pe
op
le
Low
Un
cert
ain
ties
su
rro
un
din
g lo
cal
stat
us
of
fish
st
ock
s)
No
ne
kno
wn
Se
ctio
n 8
.4
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 55
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Incr
ease
d
Re
crea
tio
nal
P
ress
ure
(F
ish
ing
, B
oat
ing
and
Is
lan
d A
cces
s)
• In
jury
/mo
rtal
ity
and
/or
dis
turb
ance
to
D
ug
on
gs
and
tu
rtle
s d
ue
to
vess
el c
olli
sio
n
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
MF
MP
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• To
re
du
ce t
he
po
ten
tial
fo
r in
crea
sed
vess
el s
trik
es o
f D
ug
on
gs
and
turt
les
fro
m
incr
ease
d re
crea
tio
nal
pre
ssu
re
the
follo
win
g a
ctio
n m
ay b
e im
ple
men
ted
:
Info
rm P
roje
ct s
taff
/co
ntr
act
ors
•
of
DE
C r
ule
s re
lati
ng
to t
he
Wild
life
Co
nse
rvat
ion
Act
195
0
e.g
. dis
tan
ce t
o k
eep
fro
m
anim
als
Re
crea
tio
nal
bo
ats
and
•
recr
eati
on
al v
ehic
les
will
no
t b
e p
erm
itte
d w
ith
in t
he
bo
un
dar
ies
of
the
Pro
ject
are
a o
r to
tra
vel
on
th
e a
cces
s ro
ad
fro
m O
nsl
ow
R
oa
d
Beh
avio
ur
stan
dar
ds
to b
e •
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in a
Re
crea
tio
n C
od
e o
f C
on
du
ct. C
on
stru
ctio
n
wo
rker
s w
ill b
e as
ked
to s
ign
th
e C
od
e o
f C
on
du
ct
A c
om
mu
nit
y fe
ed
ba
ck
• p
roce
du
re w
ill b
e es
tab
lish
ed
w
her
eby
any
com
pla
ints
fro
m
the
com
mu
nit
y ab
ou
t u
na
ccep
tab
le b
ehav
iou
r fr
om
co
nst
ruct
ion
wo
rker
s w
ill b
e in
vest
igat
ed
and
, wh
ere
ne
cess
ary,
act
ion
tak
en
33
Mediu
m•
An
incr
ease
in
the
leve
l of
recr
eati
on
al
bo
atin
g a
ctiv
ity
• A
co
de
of
con
du
ct w
ill b
e d
evel
op
ed
to
red
uce
th
e im
pa
ct o
f b
oat
ers
on
m
arin
e fa
un
a
• D
iffi
cult
to
p
red
ict
the
leve
l o
f p
ote
nti
al
recr
eati
on
al
vess
el a
ctiv
ity
asso
ciat
ed
wit
h
larg
e n
um
ber
s o
f p
eo
ple
Low
Un
cert
ain
ties
su
rro
un
din
g
man
ag
emen
t
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
bu
t w
ith
g
aps
Du
go
ng
s
Turt
les
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
56 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Incr
ease
d
Re
crea
tio
nal
P
ress
ure
(F
ish
ing
, B
oat
ing
and
Is
lan
d A
cces
s)
• D
istu
rban
ce
lea
din
g to
re
du
ced
b
ree
din
g su
cces
s o
f n
esti
ng
mar
ine
turt
les
and
se
abir
ds
• In
terf
eren
ce w
ith
a
du
lt o
r h
atch
ling
tu
rtle
s
• Tr
amp
ling
of
nes
ts
and
bu
rro
ws
• E
rosi
on
of
suit
able
n
esti
ng
area
s
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
MF
MP
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• To
re
du
ce im
pa
cts
to P
rote
cte
d
Mar
ine
Fau
na
(tu
rtle
s an
d n
esti
ng
b
ird
s o
n is
lan
ds)
fro
m in
crea
sed
re
crea
tio
nal
pre
ssu
re t
he
follo
win
g
act
ion
s m
ay b
e im
ple
men
ted
:
Mak
e ex
isti
ng
mam
mal
an
d
• tu
rtle
aer
ial s
igh
tin
g d
ata
avai
lab
le t
o D
EC
fo
r p
lan
nin
g
pu
rpo
ses
rela
tin
g to
re
crea
tio
nal
bo
atin
g a
ctiv
ity
in
the
On
slo
w r
eg
ion
Info
rm P
roje
ct s
taff
/co
ntr
act
ors
•
of
DE
C r
ule
s re
lati
ng
to o
ffsh
ore
n
atu
re r
eser
ves
e.g
. d
om
esti
cate
d an
imal
s (s
uch
as
do
gs
and
cats
) w
ill b
e p
roh
ibit
ed
o
n o
ffsh
ore
isla
nd
s/re
serv
es
Th
e P
rop
on
ent
will
wo
rk w
ith
•
the
DE
C t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
use
of
the
isla
nd
s w
ith
in a
25
km r
ad
ius
of
On
slo
w
Re
crea
tio
nal
bo
ats
and
•
recr
eati
on
al v
ehic
les
will
no
t b
e p
erm
itte
d w
ith
in t
he
wo
rkfo
rce
acc
om
mo
dat
ion
vill
ag
e o
r to
tr
avel
on
th
e a
cces
s ro
ad
fro
m
On
slo
w R
oa
d
Beh
avio
ur
stan
dar
ds
to b
e •
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in a
Re
crea
tio
n C
od
e o
f C
on
du
ct. C
on
stru
ctio
n
wo
rker
s w
ill b
e as
ked
to s
ign
th
e C
od
e o
f C
on
du
ct
A c
om
mu
nit
y fe
ed
ba
ck
• p
roce
du
re w
ill b
e es
tab
lish
ed
w
her
eby
any
com
pla
ints
fro
m
the
com
mu
nit
y ab
ou
t u
na
ccep
tab
le b
ehav
iou
r fr
om
co
nst
ruct
ion
wo
rker
s w
ill b
e in
vest
igat
ed
and
, wh
ere
ne
cess
ary,
act
ion
tak
en
33
Mediu
m•
Incr
ease
in t
he
leve
l of
recr
eati
on
al u
se
of
the
isla
nd
s
• A
co
de
of
con
du
ct w
ill b
e d
evel
op
ed
to
red
uce
th
e im
pa
ct o
f re
crea
tio
nis
ts o
n
isla
nd
fau
na
• D
iffi
cult
to
p
red
ict
the
leve
l o
f p
ote
nti
al
recr
eati
on
al
vess
el a
ctiv
ity
asso
ciat
ed
wit
h
larg
e n
um
ber
s o
f p
eo
ple
Low
Un
cert
ain
ties
su
rro
un
din
g
man
ag
emen
t (t
her
e is
so
me
info
rmat
ion
on
is
lan
d h
abit
ats
and
spe
cies
of
nes
tin
g b
ird
s an
d
turt
les
avai
lab
le)
Turt
les
Sea
bir
ds
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 57
Mari
ne
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Incr
ease
d
Re
crea
tio
nal
P
ress
ure
(F
ish
ing
, B
oat
ing
and
Is
lan
d A
cces
s)
• E
nta
ng
lem
ent
or
ing
esti
on
of
mar
ine
deb
ris
fro
m r
ecr
eati
on
al
bo
ats
by
mar
ine
fau
na
e.g
. g
arb
ag
e, p
last
ics,
fi
shin
g lin
e
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
MF
MP
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• To
re
du
ce im
pa
cts
to m
arin
e fa
un
a fr
om
en
tan
gle
men
t/in
ges
tio
n o
f m
arin
e d
ebri
s th
e fo
llow
ing
act
ion
s m
ay b
e im
ple
men
ted
:
Co
nse
rvat
ion
ind
uct
ion
•
pro
gra
ms
will
be
run
fo
r em
plo
yees
an
d co
ntr
act
ors
(e.g
. to
incl
ud
e e
du
cati
on
of
bet
ter
dis
po
sal o
f fi
shin
g lin
e an
d u
se
of
bio
de
gra
dab
le fi
shin
g lin
e)
Re
crea
tio
nal
bo
ats
and
•
recr
eati
on
al v
ehic
les
will
no
t b
e p
erm
itte
d w
ith
in t
he
wo
rkfo
rce
acc
om
mo
dat
ion
vill
ag
e o
r to
tr
avel
on
th
e a
cces
s ro
ad
fro
m
On
slo
w R
oa
d
Beh
avio
ur
stan
dar
ds
to b
e •
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in a
Re
crea
tio
n C
od
e o
f C
on
du
ct. C
on
stru
ctio
n
wo
rker
s w
ill b
e as
ked
to s
ign
th
e C
od
e o
f C
on
du
ct
A c
om
mu
nit
y fe
ed
ba
ck
• p
roce
du
re w
ill b
e es
tab
lish
ed
w
her
eby
any
com
pla
ints
fro
m
the
com
mu
nit
y ab
ou
t u
na
ccep
tab
le b
ehav
iou
r fr
om
co
nst
ruct
ion
wo
rker
s w
ill b
e in
vest
igat
ed
and
, wh
ere
ne
cess
ary,
act
ion
tak
en
53
Low
• A
co
de
of
con
du
ct w
ill b
e d
evel
op
ed
to
red
uce
th
e im
pa
ct o
f re
crea
tio
nis
ts o
n
the
mar
ine
envi
ron
men
t
• D
iffi
cult
to
p
red
ict
the
leve
l o
f p
ote
nti
al
recr
eati
on
al
vess
el a
ctiv
ity
asso
ciat
ed
wit
h
larg
e n
um
ber
s o
f p
eo
ple
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
58 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Op
erat
ion
sD
isch
arg
es a
nd
W
aste
s fr
om
N
ears
ho
re
Op
erat
ion
s
• D
istu
rban
ce t
o
pro
tect
ed
mar
ine
fau
na
.
54
Ver
y
Low
• T
his
ris
k as
sess
men
t as
sum
es t
he
min
imu
m
stan
dar
ds
will
be
app
lied
to
was
tew
ater
d
isch
arg
es f
rom
o
nsh
ore
in
fras
tru
ctu
re
and
thu
s w
ill n
ot
imp
act
on
p
rote
cte
d
mar
ine
fau
na
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• E
nd
of
pip
e d
iffu
ser
loca
ted
at
th
e P
LF
• M
ixin
g zo
ne
bo
un
dar
ies
to b
e es
tab
lish
ed
and
mo
nit
ori
ng
to
ach
ieve
ap
plic
able
wat
er q
ual
ity
targ
ets
at m
ixin
g zo
ne
bo
un
dar
y
• S
ele
ctio
n o
f o
utf
all l
oca
tio
n a
nd
d
iffu
ser
des
ign
fo
r a
de
qu
ate
dilu
tio
n a
nd
dis
per
sio
n o
f P
W
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge
• M
ana
ge
dis
char
ges
by
taki
ng
into
a
cco
un
t th
e th
resh
old
lim
its
of
the
AN
ZE
CC
/AR
MC
AN
Z g
uid
elin
es
• Tr
eatm
ent
of
PW
wit
h t
he
ob
ject
ive
of
me
etin
g th
e re
qu
irem
ents
of
the
Off
sho
re P
etro
leu
m a
nd
G
reen
ho
use
Gas
Sto
rag
e (E
nvi
ron
men
t) R
eg
ula
tio
ns
20
09
as
th
ey a
pp
ly f
or
tim
e to
tim
e
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
• D
iffu
ser
des
ign
an
d si
ze o
f m
ixin
g
zon
e sh
all t
ake
into
co
nsi
der
atio
n
the
targ
et f
or
PN
EC
54
Ver
y
Low
• M
od
ellin
g
sug
ges
ts t
hat
w
ith
th
e ap
plic
atio
n o
f ap
pro
pri
ate
mit
igat
ion
m
easu
res,
d
isch
arg
es a
re
un
likel
y to
ex
cee
d A
NZ
EC
C/
AR
MC
AN
Z
gu
idel
ines
un
der
m
ost
sce
nar
ios
• O
utf
all i
n
loca
tio
n n
ot
sup
po
rtin
g
crit
ical
or
sen
siti
ve h
abit
at
for
mar
ine
fau
na
• D
isch
arg
es w
ill
be
trea
ted
to
me
et
go
vern
men
t st
and
ard
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Mari
ne
Fau
na
Op
erat
ion
sD
isch
arg
es a
nd
W
aste
s fr
om
N
ears
ho
re
Op
erat
ion
s
• In
crea
se in
n
utr
ien
ts in
wat
er
lea
din
g to
eu
tro
ph
icat
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
s ab
ove
54
Ver
y
Low
• M
od
ellin
g
sug
ges
ts t
hat
w
ith
th
e ap
plic
atio
n o
f ap
pro
pri
ate
mit
igat
ion
m
easu
res,
d
isch
arg
es a
re
likel
y n
ot
to
exce
ed
AN
ZE
CC
/A
RM
CA
NZ
g
uid
elin
es u
nd
er
mo
st s
cen
ario
s
• O
utf
all i
n
loca
tio
n n
ot
sup
po
rtin
g
crit
ical
or
sen
siti
ve h
abit
at
for
mar
ine
fau
na
• D
isch
arg
es w
ill
be
trea
ted
to
me
et
go
vern
men
t st
and
ard
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 59
Mari
ne
Fau
na
Op
erat
ion
sR
ou
tin
e D
isch
arg
es
fro
m O
ffsh
ore
A
ctiv
itie
s
• To
xic
effe
cts
to
mar
ine
fau
na
fro
m
off
sho
re
dis
char
ges
54
Ver
y
Low
• T
his
ris
k as
sess
men
t as
sum
es t
he
min
imu
m
stan
dar
ds
will
be
app
lied
to
was
tew
ater
d
isch
arg
es f
rom
o
ffsh
ore
in
fras
tru
ctu
re
and
thu
s w
ill n
ot
imp
act
on
p
rote
cte
d
mar
ine
fau
na
• T
he
Pro
po
nen
t w
ill d
eter
min
e P
NE
C f
or
PW
dis
char
ge
thro
ug
h
eco
toxi
city
tes
tin
g
• C
om
plia
nce
wit
h t
he
Off
sho
re
Pet
role
um
an
d G
reen
ho
use
Gas
S
tora
ge
(En
viro
nm
ent)
Re
gu
lati
on
s 2
00
9, a
s th
ey a
pp
ly f
rom
tim
e to
ti
me
• C
on
tro
l rat
e, t
imin
g an
d
char
act
eris
tics
of
dis
char
ge
of
ME
G
wit
h t
he
ob
ject
ive
of
mai
nta
inin
g
dis
char
ge
wat
er q
ual
ity
at a
leve
l n
ot
in e
xces
s o
f 5
0 m
g/L
loca
l to
th
e p
latf
orm
(or
an a
gre
ed
dis
tan
ce
fro
m t
he
pla
tfo
rm)
• M
on
ito
r P
W c
on
cen
trat
ion
s p
rio
r to
d
isch
arg
e
54
Ver
y
Low
• L
arg
e vo
lum
es
will
be
dis
char
ge
d, b
ut
the
area
of
dis
char
ge
is in
d
eep
wat
er a
nd
h
igh
ly m
ixe
d
• T
her
e is
no
cr
itic
al f
aun
a h
abit
at a
t ri
sk
fro
m d
isch
arg
e in
th
e n
ear
vici
nit
y o
f th
e p
latf
orm
• A
do
pti
on
of
mit
igat
ion
an
d
mo
nit
ori
ng
co
mm
itm
ents
• D
isch
arg
es w
ill
be
trea
ted
to
me
et
go
vern
men
t st
and
ard
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (N
ears
ho
re)
• L
eaks
or
spill
s le
ad
ing
to t
he
loss
o
f h
abit
at f
or
mar
ine
fau
na
54
Ver
y
Low
• T
his
ris
k as
sess
men
t as
sum
es a
w
ors
t-ca
se
maj
or
spill
of
con
den
sate
• T
he
risk
as
sess
men
t as
sum
es a
w
ors
t-ca
se
ad
vers
e ef
fect
s o
n a
re
gio
nal
ly
sig
nifi
can
t st
and
o
f m
ang
rove
s
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• Im
ple
men
tati
on
, wh
ere
pra
ctic
able
, of
rele
van
t A
ust
ralia
S
tan
dar
ds
and
Co
des
in t
he
init
ial
des
ign
inte
gri
ty, p
roce
ss a
nd
uti
lity
eq
uip
men
t, m
ater
ials
han
dlin
g an
d
op
erat
ing
and
mai
nte
nan
ce
pro
ced
ure
s w
ith
th
e o
bje
ctiv
e o
f re
du
cin
g sp
ills
• A
DM
P a
pp
rove
d M
OP
P w
ill b
e im
ple
men
ted
and
rele
van
t p
erso
nn
el w
ill b
e tr
ain
ed
in
acc
ord
ance
wit
h t
he
MO
PP
• C
lean
up
and
rem
ed
iati
on
met
ho
ds
will
be
imp
lem
ente
d in
th
e ev
ent
of
a sp
ill
44
Low
• T
he
risk
of
maj
or
spill
s as
soci
ate
d
wit
h n
ears
ho
re
infr
astr
uct
ure
is
low
• C
on
den
sate
is
hig
hly
ev
apo
rati
ve
• N
o t
urt
le n
esti
ng
b
each
es n
ear
PL
F an
d M
OF
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
n
ear
the
PL
F an
d
MO
F
• A
do
pti
on
of
mit
igat
ion
(a
pp
rove
d
MO
PP
) an
d
mo
nit
ori
ng
co
mm
itm
ents
• A
bili
ty t
o c
on
tain
an
d cl
ean
up
sp
ills
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Ap
pen
dix
S
1
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
60 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (N
ears
ho
re)
• D
istu
rban
ce t
o
pro
tect
ed
mar
ine
fau
na
• To
xic
effe
cts
to
pro
tect
ed
mar
ine
fau
na
34
Low
• R
isk
ran
kin
g
bas
ed
on
im
pa
cts
on
in
tert
idal
h
abit
ats
and
im
pa
cts
of
spill
s o
n s
eab
ird
s,
wa
din
g b
ird
s an
d
turt
les
• W
ors
t-ca
se r
isk
bas
ed
on
co
nd
ensa
te t
ank
run
nin
g a
gro
un
d
and
asso
ciat
ed
sp
ill a
few
km
fr
om
sh
ore
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• Im
ple
men
tati
on
, wh
ere
pra
ctic
able
, of
rele
van
t A
ust
ralia
S
tan
dar
ds
and
Co
des
in t
he
init
ial
des
ign
inte
gri
ty, p
roce
ss a
nd
uti
lity
eq
uip
men
t, m
ater
ials
han
dlin
g an
d
op
erat
ing
and
mai
nte
nan
ce
pro
ced
ure
s w
ith
th
e o
bje
ctiv
e o
f re
du
cin
g sp
ills
• A
DM
P a
pp
rove
d M
OP
P w
ill b
e im
ple
men
ted
and
rele
van
t p
erso
nn
el w
ill b
e tr
ain
ed
in
acc
ord
ance
wit
h t
he
MO
PP
• C
lean
up
and
rem
ed
iati
on
met
ho
ds
will
be
imp
lem
ente
d in
th
e ev
ent
of
a sp
ill
• T
he
follo
win
g m
easu
res
will
be
use
d d
uri
ng
dri
llin
g a
ctiv
itie
s to
re
du
ce t
he
risk
of
a su
bse
a b
low
ou
t:
Pro
visi
on
of
nu
mer
ou
s p
rim
ary
• an
d se
con
dar
y b
arri
ers
(su
bse
a sa
fety
val
ves,
Pro
du
ctio
n
Mas
ter
Val
ve, S
wab
Val
ve, T
ree
Cu
p, P
rod
uct
ion
Sh
utd
ow
n
Val
ve, P
rod
uct
ion
Win
g V
alve
et
c)
Wel
l bo
re s
tab
ility
mo
del
ing
for
• re
serv
oir
an
d o
verb
urd
en
form
atio
ns
Sp
eci
fic
and
app
rove
d co
ntr
ols
•
for
wo
rk-o
ver
or
re-e
ntr
y o
per
atio
ns
Exc
lusi
on
zo
ne
aro
un
d
• w
ellh
ead
s w
ith
no
an
cho
rin
g in
ex
clu
sio
n a
rea
gaz
ette
d an
d o
n
nav
igat
ion
al c
har
ts
34
Low
• T
he
risk
of
maj
or
spill
s as
soci
ate
d
wit
h n
ears
ho
re
infr
astr
uct
ure
is
low
• C
on
den
sate
is
hig
hly
ev
apo
rati
ve
• N
o t
urt
le n
esti
ng
b
each
es n
ear
PL
F an
d M
OF
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
n
ear
the
PL
F an
d
MO
F
• A
do
pti
on
of
mit
igat
ion
(a
pp
rove
d
MO
PP
) an
d
mo
nit
ori
ng
co
mm
itm
ents
• A
bili
ty t
o c
on
tain
an
d cl
ean
up
sp
ills
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 61
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (N
ears
ho
re)
• S
mo
ther
ing
and
or
oili
ng
of
mar
ine
fau
na
34
Low
• R
isk
ran
kin
g
bas
ed
on
im
pa
cts
on
in
tert
idal
h
abit
ats
and
im
pa
cts
of
spill
s o
n s
eab
ird
s,
wa
din
g b
ird
s an
d
turt
les
• W
ors
t-ca
se r
isk
bas
ed
on
co
nd
ensa
te t
ank
run
nin
g a
gro
un
d
and
asso
ciat
ed
sp
ill a
few
km
fr
om
sh
ore
• A
s ab
ove
34
Low
• A
s ab
ove
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (O
ffsh
ore
)•
Lea
ks o
r sp
ills
lea
din
g to
th
e lo
ss
of
hab
itat
fo
r m
arin
e fa
un
a
54
Ver
y
Low
• T
his
ris
k as
sess
men
t as
sum
es a
w
ors
t-ca
se
maj
or
spill
of
con
den
sate
• T
he
risk
as
sess
men
t as
sum
es a
w
ors
t-ca
se
ad
vers
e ef
fect
s o
n a
re
gio
nal
ly
sig
nifi
can
t st
and
o
f m
ang
rove
s
• A
s ab
ove
44
Low
• T
he
risk
of
maj
or
spill
s as
soci
ate
d
wit
h o
ffsh
ore
in
fras
tru
ctu
re is
lo
w
• C
on
den
sate
is
hig
hly
ev
apo
rati
ve
• M
arin
e m
amm
als
occ
ur
in lo
w d
ensi
ties
n
ear
the
Pla
tfo
rm
• D
ista
nce
of
pla
tfo
rm f
rom
tu
rtle
nes
tin
g
bea
ches
an
d
isla
nd
s su
pp
ort
ing
se
abir
ds
• A
do
pti
on
of
mit
igat
ion
(a
pp
rove
d
MO
PP
) an
d
mo
nit
ori
ng
co
mm
itm
ents
.
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (O
ffsh
ore
)•
Dis
turb
ance
to
p
rote
cte
d m
arin
e fa
un
a
• To
xic
effe
cts
to
pro
tect
ed
mar
ine
fau
na
34
Low
• R
isk
ran
kin
g
bas
ed
on
im
pa
cts
on
in
tert
idal
h
abit
ats
and
im
pa
cts
of
spill
s o
n s
eab
ird
s,
wa
din
g b
ird
s an
d
turt
les
• W
ors
t-ca
se r
isk
bas
ed
on
co
nd
ensa
te t
ank
run
nin
g a
gro
un
d
and
asso
ciat
ed
sp
ill a
few
km
fr
om
sh
ore
• A
s ab
ove
34
Low
• A
s ab
ove
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
62 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Op
erat
ion
sL
eaks
an
d S
pill
s (O
ffsh
ore
)•
Sm
oth
erin
g an
d o
r o
ilin
g o
f m
arin
e fa
un
a
34
Low
• R
isk
ran
kin
g
bas
ed
on
im
pa
cts
on
in
tert
idal
h
abit
ats
and
im
pa
cts
of
spill
s o
n s
eab
ird
s,
wa
din
g b
ird
s an
d
turt
les
• W
ors
t-ca
se r
isk
bas
ed
on
co
nd
ensa
te t
ank
run
nin
g a
gro
un
d
and
asso
ciat
ed
sp
ill a
few
km
fr
om
sh
ore
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• Im
ple
men
tati
on
, wh
ere
pra
ctic
able
, of
rele
van
t A
ust
ralia
S
tan
dar
ds
and
Co
des
in t
he
init
ial
des
ign
inte
gri
ty, p
roce
ss a
nd
uti
lity
eq
uip
men
t, m
ater
ials
han
dlin
g an
d
op
erat
ing
and
mai
nte
nan
ce
pro
ced
ure
s w
ith
th
e o
bje
ctiv
e o
f re
du
cin
g sp
ills
• A
DM
P a
pp
rove
d M
OP
P w
ill b
e im
ple
men
ted
and
rele
van
t p
erso
nn
el w
ill b
e tr
ain
ed
in
acc
ord
ance
wit
h t
he
MO
PP
• C
lean
up
and
rem
ed
iati
on
met
ho
ds
will
be
imp
lem
ente
d in
th
e ev
ent
of
a sp
ill
• T
he
follo
win
g m
easu
res
will
be
use
d d
uri
ng
dri
llin
g a
ctiv
itie
s to
re
du
ce t
he
risk
of
a su
bse
a b
low
ou
t:
Pro
visi
on
of
nu
mer
ou
s p
rim
ary
• an
d se
con
dar
y b
arri
ers
(su
bse
a sa
fety
val
ves,
Pro
du
ctio
n
Mas
ter
Val
ve, S
wab
Val
ve, T
ree
Cu
p, P
rod
uct
ion
Sh
utd
ow
n
Val
ve, P
rod
uct
ion
Win
g V
alve
et
c)
Wel
l bo
re s
tab
ility
mo
del
ing
for
• re
serv
oir
an
d o
verb
urd
en
form
atio
ns
Sp
eci
fic
and
app
rove
d co
ntr
ols
•
for
wo
rk-o
ver
or
re-e
ntr
y o
per
atio
ns
Exc
lusi
on
zo
ne
aro
un
d
• w
ellh
ead
s w
ith
no
an
cho
rin
g in
ex
clu
sio
n a
rea
gaz
ette
d an
d o
n
nav
igat
ion
al c
har
ts
34
Low
• T
he
risk
of
maj
or
spill
s as
soci
ate
d
wit
h o
ffsh
ore
in
fras
tru
ctu
re is
lo
w
• C
on
den
sate
is
hig
hly
ev
apo
rati
ve
• M
arin
e m
amm
als
occ
ur
in lo
w d
ensi
ties
n
ear
the
Pla
tfo
rm
• D
ista
nce
of
pla
tfo
rm f
rom
tu
rtle
nes
tin
g
bea
ches
an
d
isla
nd
s su
pp
ort
ing
se
abir
ds
• A
do
pti
on
of
mit
igat
ion
(a
pp
rove
d
MO
PP
) an
d
mo
nit
ori
ng
co
mm
itm
ents
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 63
Mari
ne
Fau
na
Co
nst
ruct
ion
No
ise
and
V
ibra
tio
n•
Alt
ere
d
dis
trib
uti
on
of
fau
na
du
e to
av
oid
ance
of
area
d
uri
ng
no
isy
con
stru
ctio
n
act
ivit
ies
(pili
ng
, d
red
gin
g, d
rilli
ng
)
• B
ehav
iou
ral
effe
cts
to
pro
tect
ed
mar
ine
fau
na
44
Low
• L
ikel
iho
od
of
no
ise
and
vi
bra
tio
n
imp
act
ing
m
arin
e fa
un
a
• N
ears
ho
re
envi
ron
men
t co
nsi
der
ed
to b
e th
e m
ost
se
nsi
tive
hab
itat
• R
eg
ula
tory
an
d
pu
blic
p
erce
pti
on
s co
nsi
der
ed
as
par
t o
f ri
sk
asse
ssm
ent
• R
efer
to
MF
MP
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• N
ears
ho
re in
fras
tru
ctu
re lo
cati
on
se
lect
ed
to r
ed
uce
ris
ks t
o c
riti
cal
hab
itat
• To
re
du
ce im
pa
cts
to m
arin
e fa
un
a th
e fo
llow
ing
act
ion
s w
ill b
e im
ple
men
ted
:
If a
mar
ine
mam
mal
or
turt
le
• en
ters
th
e o
bse
rvat
ion
zo
ne
(50
0 m
of
an a
ctiv
e p
ile
ham
mer
) th
e p
ilin
g su
per
viso
r (o
r o
ther
ind
ivid
ual
) w
ill b
e d
ire
cte
d to
mo
nit
or
the
mo
vem
ent
of
it in
rel
atio
n t
o t
he
act
ivit
y su
spen
sio
n z
on
e (s
ee
bel
ow
)
Pile
dri
vin
g a
ctiv
itie
s sh
all c
ease
•
if a
mar
ine
mam
mal
or
turt
le is
o
bse
rve
d w
ith
in t
he
act
ivit
y su
spen
sio
n z
on
e (1
00
m o
f an
a
ctiv
e p
ile h
amm
er)
Wh
ere
req
uir
ed
site
-sp
eci
fic
• n
ois
e m
od
ellin
g w
ill b
e u
nd
erta
ken
to
val
idat
e o
r m
od
ify
the
ad
op
ted
no
ise
man
ag
emen
t zo
nes
fo
r p
ilin
g
act
ivit
y
Mea
sure
s to
mit
igat
e a
gai
nst
•
the
po
ten
tial
ris
ks f
rom
ver
tica
l se
ism
ic p
rofi
ling
(VS
P)
will
be
dev
elo
pe
d (i
f re
qu
ire
d).
Th
ese
mea
sure
s w
ill c
on
sid
er s
eism
ic
gu
idel
ines
(D
EW
HA
, 20
08
), a
nd
w
ill b
e in
clu
de
d in
th
e d
raft
M
arin
e Fa
un
a M
ana
gem
ent
Pla
n
incl
ud
ed
wit
h t
he
Su
pp
lem
enta
ry E
IS/E
RM
P
43
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
the
pro
po
sed
P
LF
(pili
ng
) ar
ea
• N
o t
urt
le n
esti
ng
o
n b
each
es
ad
jace
nt
to
pili
ng
act
ivit
y
• P
ilin
g is
a s
ho
rt
term
co
nst
ruct
ion
a
ctiv
ity
• T
he
ad
op
tio
n o
f m
itig
atio
n
mea
sure
s su
ch
as f
aun
a o
bse
rver
s an
d
ob
serv
atio
n
zon
es
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
64 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Op
erat
ion
sN
ois
e an
d
Vib
rati
on
• A
lter
ed
d
istr
ibu
tio
n o
f fa
un
a d
ue
to
avo
idan
ce o
f ar
ea
du
rin
g n
ois
y co
nst
ruct
ion
a
ctiv
itie
s (d
red
gin
g, d
rilli
ng
)
• B
ehav
iou
ral
effe
cts
to
pro
tect
ed
mar
ine
fau
na
44
Low
• L
ikel
iho
od
of
no
ise
and
vi
bra
tio
n
imp
act
ing
m
arin
e fa
un
a
• N
ears
ho
re
envi
ron
men
t co
nsi
der
ed
to b
e th
e m
ost
se
nsi
tive
hab
itat
• R
eg
ula
tory
an
d
pu
blic
p
erce
pti
on
s co
nsi
der
ed
as
par
t o
f ri
sk
asse
ssm
ent
• R
efer
to
MF
MP
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• M
ana
gem
ent
mea
sure
s w
ill b
e im
ple
men
ted
du
rin
g m
ain
ten
ance
d
red
gin
g w
ork
s as
fo
llow
s:
Pri
or
to t
he
com
men
cem
ent
of
• m
ain
ten
ance
dre
dg
ing
and
d
red
ge
mat
eria
l pla
cem
ent
sele
cte
d cr
ew w
ill r
ece
ive
mar
ine
fau
na
trai
nin
g, w
hic
h w
ill
incl
ud
e d
etai
ls o
n p
roce
du
res
in
the
even
t o
f si
gh
tin
g, i
nju
ry a
nd
/o
r d
eath
of
Pro
tect
ed
Mar
ine
Fau
na
(e.g
. Hu
mp
ba
cks,
D
ug
on
g, t
urt
les,
do
lph
ins)
All
sig
hti
ng
s o
f H
um
pb
ack
s an
d
• D
ug
on
g th
at r
esu
lt in
m
ana
gem
ent
act
ion
s b
ein
g
imp
lem
ente
d w
ill b
e re
cord
ed
Hu
mp
ba
ck w
hal
e an
d D
ug
on
g
• o
bse
rvat
ion
s an
d re
spo
nse
p
roce
du
res,
incl
ud
ing
no
t co
mm
enci
ng
dre
dg
ing
or
dis
po
sal i
f w
hal
es o
r D
ug
on
gs
are
sig
hte
d w
ith
in a
30
0 m
o
bse
rvat
ion
zo
ne
and
ceas
ing
d
red
gin
g a
ctiv
itie
s if
wh
ales
or
Du
go
ng
s en
ter
a 10
0 m
ex
clu
sio
n z
on
e
In t
he
even
t th
at a
Hu
mp
ba
ck
• o
r D
ug
on
g is
sig
hte
d w
ith
in t
he
100
m e
xclu
sio
n z
on
e, d
red
gin
g
will
cea
se u
nti
l th
e in
div
idu
al
has
mo
ved
ou
t o
f th
e 10
0 m
ex
clu
sio
n z
on
e o
r u
nti
l no
H
um
pb
ack
s o
r D
ug
on
g h
ave
be
en o
bse
rve
d w
ith
in t
his
zo
ne
for
10 m
inu
tes.
(Co
nt’
d)
62
Low
• M
arin
e m
amm
als
and
tu
rtle
s o
ccu
r in
lo
w d
ensi
ties
in
the
pro
po
sed
d
red
gin
g ar
ea
• N
o t
urt
le n
esti
ng
o
n b
each
es
ad
jace
nt
to
dre
dg
ing
area
• T
he
ad
op
tio
n o
f m
itig
atio
n
mea
sure
s su
ch
as f
aun
a o
bse
rver
s an
d
ob
serv
atio
n
zon
es
Rea
son
able
Sh
ort
-ter
m
mo
nit
ori
ng
dat
a av
aila
ble
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
O
6
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 65
A lo
oko
ut
will
be
mai
nta
ine
d,
• d
uri
ng
day
ligh
t h
ou
rs, f
or
Hu
mp
ba
cks
and
Du
go
ng
s w
hile
d
red
ge
are
mo
vin
g to
an
d fr
om
th
e d
red
ge
area
to
dre
dg
e m
ater
ial p
lace
men
t si
tes.
If
sig
hte
d, d
ire
ctio
n/s
pe
ed
will
be
ad
just
ed
to r
ed
uce
th
e lik
elih
oo
d o
f im
pa
ct (w
ith
in t
he
safe
ty c
on
stra
ints
of
the
vess
el)
An
y in
cid
ent
invo
lvin
g th
e in
jury
•
or
mo
rtal
ity
of
turt
les
will
be
rep
ort
ed
to t
he
DE
C a
nd
DE
WH
A
wit
hin
48
ho
urs
of
the
inci
den
t o
ccu
rrin
g
Mari
ne
Fau
na
Co
nst
ruct
ion
No
ise
and
V
ibra
tio
n•
Beh
avio
ura
l C
han
ges
, In
jury
or
Mo
rtal
ity
to
Mar
ine
Fau
na
Ass
oci
ate
d w
ith
B
last
ing
Low
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• If
bla
stin
g is
re
qu
ire
d, a
Bla
stin
g
En
viro
nm
enta
l Man
ag
emen
t P
lan
w
ill b
e d
evel
op
ed
• E
xam
ple
mit
igat
ion
s fo
r al
l bla
stin
g
act
ivit
ies
may
incl
ud
e:
Use
of
mar
ine
fau
na
ob
serv
ers
• to
co
nfi
rm t
hat
no
mam
mal
s an
d
turt
les
are
wit
hin
th
e vi
cin
ity
of
des
ign
ate
d fa
un
a ex
clu
sio
n
zon
es
54
Ver
y
Low
• B
last
ing
is
un
likel
y to
be
req
uir
ed
.
• If
re
qu
ire
d, s
ho
rt
term
in d
ura
tio
n.
• M
any
po
ten
tial
m
itig
atio
n
mea
sure
s to
re
du
ce im
pa
cts
to m
arin
e fa
un
a.
Low
Ava
ilab
le
info
rmat
ion
is
ina
de
qu
ate
Se
ctio
n 8
.4
Mari
ne
Fau
na
Op
erat
ion
sL
igh
t E
mis
sio
ns
(fro
m O
nsh
ore
In
fras
tru
ctu
re)
• A
ttra
ctio
n o
f m
arin
e tu
rtle
h
atch
ling
s
33
Mediu
m•
A p
relim
inar
y st
ud
y h
as s
ho
wn
th
at t
he
pla
nt
site
is o
f lo
w
sig
nifi
can
ce f
or
nes
tin
g
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• To
re
du
ce im
pa
cts
to t
urt
le
hat
chlin
gs,
lig
ht
spill
fro
m
con
stru
ctio
n a
nd
op
erat
ion
ves
sels
o
per
atin
g n
earb
y o
ffsh
ore
isla
nd
s an
d m
ain
lan
d b
each
es t
hat
su
pp
ort
m
arin
e tu
rtle
nes
tin
g w
ill b
e re
du
ced
, wh
ere
reas
on
ably
p
ract
icab
le
• T
he
Pro
po
nen
t w
ill m
on
ito
r o
nsh
ore
infr
astr
uct
ure
-at
trib
uta
ble
ch
ang
es t
o t
he
sea
-fin
din
g su
cces
s o
f m
arin
e tu
rtle
hat
chlin
gs
at r
oo
keri
es o
n
Ash
bu
rto
n Is
lan
d an
d at
th
e A
shb
urt
on
del
ta b
each
fo
r a
per
iod
to
be
det
erm
ine
d b
ase
d o
n t
he
init
ial m
on
ito
rin
g re
sult
s
• M
on
ito
rin
g w
ill b
e co
nd
uct
ed
d
uri
ng
con
stru
ctio
n, t
o c
oin
cid
e w
ith
pla
nn
ed
flar
ing
even
ts t
o
asse
ss t
he
effe
cts
of
this
act
ivit
y o
n h
atch
ling
beh
avio
ur,
p
arti
cula
rly
in r
elat
ion
to
th
eir
ori
enta
tio
n t
o t
he
bea
ch a
nd
se
a-fi
nd
ing
succ
ess
43
Low
• C
lose
st n
esti
ng
b
each
(A
shb
urt
on
D
elta
) is
> 4
km
fr
om
pla
nt
site
.
• C
lose
st is
lan
d
roo
kery
> 8
km
fr
om
pla
nt
site
.
• M
od
ellin
g
pre
dic
ts lo
w
leve
ls o
f ill
um
inat
ion
on
n
esti
ng
bea
ches
.
• A
shb
urt
on
Del
ta
nes
tin
g b
each
sc
reen
ed
by
hig
h
du
nes
.
• M
on
ito
rin
g w
ill
be
use
d to
tes
t p
red
icti
on
th
at
flar
ing
will
no
t n
eg
ativ
ely
infl
uen
ce
hat
chlin
gs.
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Tab
le 12
.6
Ap
pen
dix
S
1
3.0
A
pp
end
ix
O6
Wheatstone Project Executive Summary
66 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Mari
ne
Fau
na
Op
erat
ion
sL
igh
t E
mis
sio
ns
(fro
m O
nsh
ore
In
fras
tru
ctu
re)
• In
terf
eren
ce w
ith
m
arin
e tu
rtle
n
esti
ng
beh
avio
r
33
Mediu
m•
A p
relim
inar
y st
ud
y h
as s
ho
wn
th
at t
he
pla
nt
site
is o
f lo
w
sig
nifi
can
ce f
or
nes
tin
g
• R
efer
to
DS
DM
P a
nd
MF
MP
fo
r co
mp
lete
list
of
mit
igat
ion
m
easu
res
• R
efer
to
Ch
apte
r 12
fo
r D
raft
OB
C
for
Mar
ine
Fau
na
Pro
tect
ion
• To
re
du
ce im
pa
cts
to t
urt
le
hat
chlin
gs,
lig
ht
spill
fro
m
con
stru
ctio
n a
nd
op
erat
ion
ves
sels
o
per
atin
g n
earb
y o
ffsh
ore
isla
nd
s an
d m
ain
lan
d b
each
es t
hat
su
pp
ort
m
arin
e tu
rtle
nes
tin
g w
ill b
e re
du
ced
, wh
ere
reas
on
ably
p
ract
icab
le
• T
he
Pro
po
nen
t w
ill m
on
ito
r o
nsh
ore
infr
astr
uct
ure
-at
trib
uta
ble
ch
ang
es t
o t
he
sea
-fin
din
g su
cces
s o
f m
arin
e tu
rtle
hat
chlin
gs
at r
oo
keri
es o
n
Ash
bu
rto
n Is
lan
d an
d at
th
e A
shb
urt
on
del
ta b
each
fo
r a
per
iod
to
be
det
erm
ine
d b
ase
d o
n t
he
init
ial m
on
ito
rin
g re
sult
s
• M
on
ito
rin
g w
ill b
e co
nd
uct
ed
d
uri
ng
con
stru
ctio
n, t
o c
oin
cid
e w
ith
pla
nn
ed
flar
ing
even
ts t
o
asse
ss t
he
effe
cts
of
this
act
ivit
y o
n h
atch
ling
beh
avio
ur,
p
arti
cula
rly
in r
elat
ion
to
th
eir
ori
enta
tio
n t
o t
he
bea
ch a
nd
se
a-fi
nd
ing
succ
ess
43
Low
• C
lose
st n
esti
ng
b
each
(A
shb
urt
on
D
elta
) is
> 4
km
fr
om
pla
nt
site
• C
lose
st is
lan
d
roo
kery
> 8
km
fr
om
pla
nt
site
• M
od
ellin
g
pre
dic
ts lo
w
leve
ls o
f ill
um
inat
ion
on
n
esti
ng
bea
ches
• A
shb
urt
on
Del
ta
nes
tin
g b
each
sc
reen
ed
by
hig
h
du
nes
• M
on
ito
rin
g w
ill
be
use
d to
tes
t p
red
icti
on
th
at
flar
ing
will
no
t n
eg
ativ
ely
infl
uen
ce
hat
chlin
gs
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Ch
apte
r 8
.4
Mari
ne
Fau
na
Op
erat
ion
sL
igh
t E
mis
sio
ns
(fro
m O
nsh
ore
In
fras
tru
ctu
re)
• A
ttra
ctio
n o
f se
abir
ds
crea
tin
g
po
ten
tial
fo
r in
crea
sed
p
red
atio
n o
f h
atch
ling
s
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• O
nsh
ore
infr
astr
uct
ure
loca
tio
n
sele
cte
d to
re
du
ce r
isks
to
cri
tica
l h
abit
at
43
Low
• N
o t
urt
le n
esti
ng
o
n b
each
es n
ear
the
pla
nt
site
• C
lose
st n
esti
ng
b
each
(A
shb
urt
on
D
elta
) is
> 4
km
fr
om
pla
nt
site
Rea
son
able
Mo
del
ling
co
nd
uct
ed
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Mari
ne
Fau
na
Ad
dit
ive
Eff
ect
s•
Th
e su
m o
f al
l p
ote
nti
al
Pro
ject
-at
trib
uta
ble
im
pa
cts
fro
m a
ll P
roje
ct p
has
es
and
asp
ect
s
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ee
abo
ve f
or
pro
po
sed
m
ana
gem
ent/
mit
igat
ion
mea
sure
s4
2M
ediu
m•
Th
e ri
sk r
anki
ng
o
f th
e a
dd
itiv
e ef
fect
s o
f al
l P
roje
ct a
spe
cts
is d
eter
min
ed
by
the
hig
hes
t ri
sk
ran
kin
g o
f an
y in
div
idu
al a
spe
ct
Rea
son
able
No
si
gn
ifica
nt
imp
act
Se
ctio
n 8
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 67
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
s
• A
lter
atio
n o
f th
e en
tran
ce R
eg
ime
of
Ho
ole
y C
reek
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s.
• R
efer
to
Ch
apte
r 12
fo
r th
e O
BC
re
lati
ng
to C
oas
tal P
roce
sses
P
rote
ctio
n.
• M
ana
ge
con
stru
ctio
n a
nd
o
per
atio
n a
ctiv
itie
s to
re
du
ce, a
s fa
r as
pra
ctic
able
, nea
rsh
ore
in
fras
tru
ctu
re-a
ttri
bu
tab
le
imp
act
s o
n t
he
ph
ysic
al in
teg
rity
an
d fu
nct
ion
alit
y o
f co
asta
l p
roce
sses
at
Ho
ole
y C
reek
.
• M
itig
atio
n w
ill b
e in
stig
ate
d to
m
ain
tain
th
e in
teg
rity
of
the
entr
ance
re
gim
e o
f H
oo
ley
Cre
ek if
it
is d
eter
min
ed
that
th
e n
ears
ho
re
infr
astr
uct
ure
, no
t a
nat
ura
l ag
ent
of
dis
turb
ance
, was
th
e ca
use
of
the
des
tab
iliza
tio
n.
• M
itig
atio
n m
easu
res
may
incl
ud
e sa
nd
man
ag
emen
t co
nsi
stin
g o
f n
ou
rish
men
t o
f th
e fe
atu
res.
(N
ou
rish
men
t is
th
e p
roce
ss o
f p
laci
ng
or
pu
mp
ing
san
d fr
om
el
sew
her
e o
nto
an
ero
din
g fe
atu
re
to r
esh
ape
the
exis
tin
g b
each
).
• A
dap
tive
mo
nit
ori
ng
pro
gra
m t
o
mo
nit
or
chan
ges
to
th
e sp
it w
idth
at
Ho
ole
y C
reek
an
d al
l en
tran
ce
bar
s fr
om
Ash
bu
rto
n R
iver
en
tran
ce t
o B
ead
on
Cre
ek.
• T
he
Pro
po
nen
t to
pre
par
e an
an
nu
al c
oas
tal p
roce
sses
m
on
ito
rin
g re
po
rt. T
his
rep
ort
sh
all b
e m
ad
e av
aila
ble
to
rel
evan
t a
gen
cies
.
42
Mediu
m•
Wit
ho
ut
san
d
sup
ply
fro
m t
he
wes
t, t
he
exis
tin
g sp
it
wo
uld
ero
de
ove
r ap
pro
xim
atel
y 5
-10
yea
rs
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Wheatstone Project Executive Summary
68 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
s
• E
rosi
on
of
Su
nse
t B
each
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• M
ana
ge
con
stru
ctio
n a
nd
o
per
atio
n a
ctiv
itie
s to
re
du
ce, a
s fa
r as
pra
ctic
able
, nea
rsh
ore
in
fras
tru
ctu
re-a
ttri
bu
tab
le
imp
act
s o
n t
he
ph
ysic
al in
teg
rity
of
coas
tal p
roce
sses
an
d fu
nct
ion
alit
y at
Su
nse
t B
each
• M
itig
atio
n w
ill b
e in
stig
ate
d to
m
ain
tain
th
e in
teg
rity
of
Su
nse
t B
each
if it
is d
eter
min
ed
that
th
e n
ears
ho
re in
fras
tru
ctu
re, n
ot
a n
atu
ral a
gen
t o
f d
istu
rban
ce, w
as
the
cau
se o
f th
e er
osi
on
. Mit
igat
ion
m
easu
res
may
incl
ud
e b
each
n
ou
rish
men
t
• A
dap
tive
mo
nit
ori
ng
pro
gra
m t
o
mo
nit
or
chan
ges
to
bea
ch p
rofi
le
and
wid
th
• T
he
Pro
po
nen
t to
pre
par
e an
an
nu
al c
oas
tal p
roce
sses
m
on
ito
rin
g re
po
rt. T
his
rep
ort
sh
all b
e m
ad
e av
aila
ble
to
rel
evan
t a
gen
cies
53
Low
• S
tru
ctu
ral
con
tro
l at
Bea
do
n P
oin
t lim
its
the
po
ten
tial
fo
r er
osi
on
as
a d
ire
ct r
esu
lt o
f re
du
ced
san
d
sup
ply
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
s
• E
rosi
on
of
On
slo
w
Tow
n B
each
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Dis
rup
tio
n o
f n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
: Ero
sio
n o
f S
un
set
Bea
ch a
bo
ve
43
Low
• T
he
stru
ctu
rally
co
ntr
olle
d
nat
ure
of
this
b
each
d
eter
min
es t
hat
a
loss
of
sup
ply
w
ou
ld n
ot
cau
se
ero
sio
n
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Ap
pen
dix
T
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 69
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
s
• D
esta
bili
sati
on
of
Ash
bu
rto
n E
ast
chen
ier
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Ch
apte
r 12
fo
r th
e O
BC
re
lati
ng
to C
oas
tal P
roce
sses
P
rote
ctio
n
• M
ana
ge
con
stru
ctio
n a
nd
o
per
atio
n a
ctiv
itie
s to
re
du
ce, a
s fa
r as
pra
ctic
able
, nea
rsh
ore
in
fras
tru
ctu
re-a
ttri
bu
tab
le
imp
act
s o
n t
he
ph
ysic
al in
teg
rity
an
d fu
nct
ion
alit
y o
f co
asta
l p
roce
sses
at
the
Eas
t A
shb
urt
on
D
elta
• M
ana
ge
the
volu
me
of
po
ten
tial
u
pd
rift
cap
ture
of
sed
imen
ts o
n
the
wes
t si
de
of
the
MO
F b
reak
wat
ers
• M
itig
atio
n w
ill b
e in
stig
ate
d to
m
ain
tain
th
e in
teg
rity
of
the
Ash
bu
rto
n E
ast
chen
ier
if it
is
det
erm
ine
d th
at t
he
nea
rsh
ore
in
fras
tru
ctu
re, n
ot
a n
atu
ral a
gen
t o
f d
istu
rban
ce, w
as t
he
cau
se o
f th
e d
esta
bili
sati
on
• S
and
man
ag
emen
t co
nsi
stin
g o
f n
ou
rish
men
t o
f th
e ch
enie
r
• A
dap
tive
mo
nit
ori
ng
pro
gra
m t
o
mo
nit
or
chan
ges
to
Ash
bu
rto
n
Eas
t ch
enie
r w
idth
• T
he
Pro
po
nen
t to
pre
par
e an
an
nu
al c
oas
tal p
roce
sses
m
on
ito
rin
g re
po
rt. T
his
rep
ort
sh
all b
e m
ad
e av
aila
ble
to
rel
evan
t a
gen
cies
34
Low
• M
OF
bre
akw
ater
s ar
e lik
ely
to h
ave
ne
glig
ible
eff
ect
o
n o
ng
oin
g
sed
imen
t tr
ansp
ort
to
th
e w
est
of
the
MO
F
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e cy
clo
nic
lit
tora
l se
dim
ent
pat
hs
• A
lter
atio
n o
f th
e en
tran
ce R
eg
ime
of
Ho
ole
y C
reek
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Ch
apte
r 12
fo
r th
e O
BC
re
lati
ng
to C
oas
tal P
roce
sses
P
rote
ctio
n
• R
efer
to
Dis
rup
tio
n o
f n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
: En
tran
ce
Re
gim
e o
f H
oo
ley
Cre
ek a
bo
ve
42
Mediu
m•
Eas
twar
d
do
wn
dri
ft
ero
sio
n w
ill
cau
se m
assi
ve
chan
ge
to t
he
entr
ance
m
orp
ho
log
y in
th
e ev
ent
of
a si
gn
ifica
nt
cycl
on
e
• S
imila
r im
pa
cts
hav
e o
ccu
rre
d
ove
r an
his
tori
c p
erio
d
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Wheatstone Project Executive Summary
70 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o
resi
du
al r
isk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e cy
clo
nic
lit
tora
l se
dim
ent
pat
hs
• E
rosi
on
of
Su
nse
t B
each
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Dis
rup
tio
n o
f n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
: Ero
sio
n o
f S
un
set
Bea
ch a
bo
ve
52
Low
• In
th
e ev
ent
of
a cy
clo
ne
imp
act
s to
Su
nse
t B
each
w
ill o
nly
be
slig
htl
y in
crea
sed
• T
he
exis
tin
g
bea
ch is
su
ffici
entl
y w
ide
to w
ith
stan
d
seve
re c
yclo
ne
imp
act
, an
d to
re
cove
r
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e cy
clo
nic
lit
tora
l se
dim
ent
pat
hs
• E
rosi
on
of
On
slo
w
Tow
n B
each
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Dis
rup
tio
n o
f n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
: Ero
sio
n o
f O
nsl
ow
To
wn
Bea
ch a
bo
ve
42
Mediu
m•
Inte
rru
pti
on
of
the
no
n-c
yclo
nic
lit
tora
l tra
nsp
ort
p
ath
will
slo
w
bea
ch r
eco
very
fo
llow
ing
an
ero
sio
n e
ven
t
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f N
ears
ho
re
Infr
astr
uct
ure
• In
terr
up
tio
n o
f th
e cy
clo
nic
lit
tora
l se
dim
ent
pat
hs
• D
esta
bili
sati
on
of
Ash
bu
rto
n E
ast
chen
ier
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Ch
apte
r 12
fo
r th
e O
BC
re
lati
ng
to C
oas
tal P
roce
sses
P
rote
ctio
n
• R
efer
to
Dis
rup
tio
n o
f n
on
-cyc
lon
ic
litto
ral s
ed
imen
t p
ath
: D
esta
bili
sati
on
of
Ash
bu
rto
n E
ast
chen
ier
33
Mediu
m•
Du
e to
MO
F b
reak
wat
ers,
d
ow
nd
rift
er
osi
on
may
fo
cus
on
th
e ch
enie
r u
nd
er
cycl
on
ic
pre
ssu
re
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f O
nsh
ore
In
fras
tru
ctu
re
• D
isru
pti
on
of
flu
vial
pat
hw
ay
• A
shb
urt
on
Riv
er
Ch
ann
el A
vuls
ion
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• R
efer
to
Ch
apte
r 12
fo
r th
e O
BC
re
lati
ng
to C
oas
tal P
roce
sses
P
rote
ctio
n
• M
ana
ge
con
stru
ctio
n a
nd
o
per
atio
n a
ctiv
itie
s to
re
du
ce, a
s fa
r as
pra
ctic
able
, nea
rsh
ore
in
fras
tru
ctu
re-a
ttri
bu
tab
le
imp
act
s o
n t
he
ph
ysic
al in
teg
rity
an
d fu
nct
ion
alit
y o
f th
e fl
uvi
al
pat
hw
ay o
f th
e A
shb
urt
on
Riv
er
• M
itig
atio
n w
ill b
e in
stig
ate
d to
m
ain
tain
th
e in
teg
rity
of
the
flu
vial
p
ath
way
of
the
Ash
bu
rto
n R
iver
if
it is
det
erm
ine
d th
at t
he
nea
rsh
ore
in
fras
tru
ctu
re, n
ot
a n
atu
ral a
gen
t o
f d
istu
rban
ce, w
as t
he
cau
se o
f th
e d
isru
pti
on
(Co
nt’
d)
54
Ver
y
Low
• T
he
seq
uen
ce o
f ev
ents
th
at w
ill
red
uce
hyd
rau
lic
resi
stan
ce o
f th
e b
reak
ou
t p
ath
way
are
u
nlik
ely
to o
ccu
r
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 71
• M
ana
ge
Pro
ject
-att
rib
uta
ble
se
dim
enta
tio
n d
uri
ng
con
stru
ctio
n
• C
han
nel
cro
ss-s
ect
ion
mo
nit
ori
ng
• T
he
Pro
po
nen
t to
pre
par
e an
an
nu
al c
oas
tal p
roce
sses
m
on
ito
rin
g re
po
rt. T
his
rep
ort
sh
all b
e m
ad
e av
aila
ble
to
rel
evan
t a
gen
cies
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sC
on
stru
ctio
n o
f O
nsh
ore
In
fras
tru
ctu
re
• In
crea
sed
flo
ws
thro
ug
h c
han
nel
(i
ncl
ud
es
dra
ina
ge)
• R
eact
ivat
ion
of
pal
ae
och
ann
els
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• M
ana
ge
con
stru
ctio
n a
nd
o
per
atio
n a
ctiv
itie
s to
re
du
ce, a
s fa
r as
pra
ctic
able
, nea
rsh
ore
in
fras
tru
ctu
re-a
ttri
bu
tab
le
imp
act
s o
n t
he
ph
ysic
al in
teg
rity
an
d fu
nct
ion
alit
y o
f th
e fl
uvi
al
pat
hw
ay o
f th
e A
shb
urt
on
Riv
er
• C
han
nel
cro
ss-s
ect
ion
mo
nit
ori
ng
• T
he
Pro
po
nen
t to
pre
par
e an
an
nu
al c
oas
tal p
roce
sses
m
on
ito
rin
g re
po
rt. T
his
rep
ort
sh
all b
e m
ad
e av
aila
ble
to
rel
evan
t a
gen
cies
54
Ver
y
Low
• R
eact
ivti
atio
n
has
low
en
viro
nm
enta
l co
nse
qu
ence
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
8.5
Tab
le 12
.3
Ap
pen
dix
T
1
Coast
al
Pro
cess
esC
on
stru
ctio
n
and
Op
erat
ion
sE
xcav
atio
n o
f b
orr
ow
pit
s•
Lo
ss o
f g
eo
log
ical
h
erit
ag
e fe
atu
res
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
efer
to
CP
MP
fo
r co
mp
lete
list
of
mit
igat
ion
mea
sure
s
• F
ield
su
rvey
s to
be
un
der
take
n t
o
con
firm
, wh
ere
pra
ctic
able
, th
e g
eo
log
ical
her
ita
ge
valu
e o
f th
e P
roje
ct a
rea
and
iden
tify
fea
ture
s re
qu
irin
g p
rote
ctio
n
• D
uri
ng
bo
rro
w p
it e
xcav
atio
n,
mit
igat
ion
will
be
imp
lem
ente
d to
re
du
ce p
ote
nti
al im
pa
cts
to, a
nd
to
pro
tect
, th
ese
feat
ure
s as
re
aso
nab
ly p
ract
icab
le
44
Low
• G
eo
log
ical
h
erit
ag
e fe
atu
res
exis
t in
th
e P
roje
ct a
rea
and
req
uir
e p
rote
ctio
n;
ho
wev
er
mit
igat
ion
m
easu
res
will
be
pu
t in
pla
ce t
o
red
uce
d
istu
rban
ce o
f th
ese
feat
ure
s
Low
No
su
rvey
dat
a
No
t A
pp
licab
leS
ect
ion
8.5
Ap
pen
dix
T
1
Coast
al
Pro
cess
esA
dd
itiv
e E
ffe
cts
• T
he
sum
of
all
po
ten
tial
P
roje
ct-
attr
ibu
tab
le
imp
act
s fr
om
all
Pro
ject
ph
ases
an
d as
pe
cts
—N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
ee
abo
ve f
or
pro
po
sed
m
ana
gem
ent/
mit
igat
ion
mea
sure
s5
1M
ediu
m•
Th
e ri
sk r
anki
ng
o
f th
e a
dd
itiv
e ef
fect
s o
f al
l P
roje
ct a
spe
cts
is d
eter
min
ed
by
the
hig
hes
t ri
sk
ran
kin
g o
f an
y in
div
idu
al a
spe
ct
Lo
w
No
mo
del
ling
co
nd
uct
ed
on
a
dd
itiv
e ef
fect
s
No
t A
pp
licab
le8
.5
Wheatstone Project Executive Summary
72 | Chevron Australia Pty Ltd
Table
1.6
: Ter
rest
rial R
isk
Ass
essm
ent
Su
mm
ary
For
det
ails
on
th
e ri
sk r
anki
ng
pro
ced
ure
, in
clu
din
g co
nse
qu
ence
an
d lik
elih
oo
d d
efin
itio
ns
spec
ific
to e
ach
fac
tor,
ref
er t
o C
hap
ter
7, Im
pac
t A
sses
smen
t M
eth
od
olo
gy
and
C
hap
ter
9, T
erre
stri
al R
isk
Ass
essm
ent
and
Man
agem
ent.
No
te t
hat
“C
” re
fers
to
Co
nse
qu
ence
an
d “L
” re
fers
to
Lik
elih
oo
d.
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Soils
&
Lan
dfo
rms
Co
nst
ruct
ion
E
arth
wo
rks
• D
eg
rad
atio
n o
f so
il q
ual
ity
thro
ug
h t
he
dis
turb
ance
of
PA
SS
(i.e
. aci
dit
y an
d h
eavy
met
als)
• S
oil
ero
sio
n d
ue
to
gro
un
d
dis
turb
ance
(i.e
. w
ind
and
wat
er)
42
Mediu
m•
Ran
kin
g b
ase
d o
n
po
ten
tial
ph
ysic
al
chan
ges
to
H
oo
ley
• C
reek
an
d
Ash
bu
rto
n R
iver
D
elta
• A
SS
is n
ot
con
sid
ere
d to
be
a si
gn
ifica
nt
risk
to
th
e te
rres
tria
l en
viro
nm
ent
• H
ealt
h is
sues
as
soci
ate
d w
ith
m
osq
uit
oes
an
d
the
des
ign
of
any
sto
rmw
ater
p
on
ds
will
be
inve
stig
ate
d an
d
con
tro
ls w
ill b
e in
corp
ora
ted
into
th
e d
esig
n
• M
ana
gem
ent
of
PA
SS
mat
eria
l u
tilis
ing
bes
t p
ract
ice
met
ho
ds,
as
ou
tlin
ed
in t
he
CE
MP
• R
ed
uce
du
st g
ener
atio
n t
hro
ug
h
app
licat
ion
of
sup
pre
ssan
t o
r so
il st
abili
ser
• In
stal
lati
on
of
ero
sio
n c
on
tro
l an
d
flo
w d
iver
sio
n d
evic
es if
re
qu
ire
d
52
Low
• P
roje
ct a
rea
has
b
een
refi
ne
d to
lim
it im
pa
cts
to
Ho
ole
y C
reek
an
d
Ash
bu
rto
n R
iver
D
elta
• T
he
Pro
ject
are
a g
ener
ally
has
a
low
ris
k o
f en
cou
nte
rin
g
PA
SS
mat
eria
l
• H
ealt
h is
sues
are
as
sess
ed
in s
oci
al
imp
act
s se
ctio
n
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d d
ue
to
the
exca
vati
on
of
the
bo
rro
w s
ites
b
ein
g lik
ely
to le
ad
to
th
e m
ino
r er
osi
on
or
loss
of
loca
l lan
dfo
rms
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
Gu
idan
ce.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.2.5
.1
Ap
pen
dix
U
1
Soils
&
Lan
dfo
rms
Op
erat
ion
sE
arth
wo
rks
and
M
ain
ten
ance
• D
eg
rad
atio
n o
f so
il q
ual
ity
thro
ug
h t
he
dis
turb
ance
of
PA
SS
(i.e
. aci
dit
y an
d h
eavy
met
als)
• S
oil
ero
sio
n
du
e to
gro
un
d
dis
turb
ance
(i.e
. w
ind
and
wat
er)
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
ana
gem
ent
of
PA
SS
mat
eria
l u
tilis
ing
bes
t p
ract
ice
met
ho
ds,
to
b
e o
utl
ine
d in
th
e O
EM
P
• R
ed
uce
du
st g
ener
atio
n t
hro
ug
h
app
licat
ion
of
sup
pre
ssan
t o
r so
il st
abili
ser
• In
stal
lati
on
of
ero
sio
n c
on
tro
l an
d
flo
w d
iver
sio
n d
evic
es if
re
qu
ire
d
64
Ver
y
Low
• In
cid
enta
l ea
rth
wo
rks
asso
ciat
ed
wit
h
on
go
ing
o
per
atio
ns
of
the
LN
G p
lan
t fa
cilit
y an
d m
ain
ten
ance
w
ork
s w
ill b
e re
qu
ire
d
thro
ug
ho
ut
the
life
of
the
Pro
ject
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
th
e o
per
atio
nal
ea
rth
wo
rks
and
m
ain
ten
ance
will
le
ad
to lo
calis
ed
an
d sh
ort
–te
rm
dis
turb
ance
s to
w
ell r
epre
sen
ted
la
nd
form
s.
Furt
her
mo
re, a
ny
dis
turb
ance
s ca
n
be
rea
dily
re
me
dia
ted
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
Gu
idan
ce.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.2.5
.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 73
Soils
&
Lan
dfo
rms
Co
nst
ruct
ion
an
d O
per
atio
ns
Lea
ks &
Sp
ills-
Sto
rag
e,
han
dlin
g an
d
tran
spo
rt
• D
eg
rad
atio
n o
f so
il q
ual
ity
du
e to
h
ydro
carb
on
s sp
ills
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
pp
rop
riat
e d
esig
n, c
on
stru
ctio
n
and
mai
nte
nan
ce o
f st
ora
ge,
h
and
ling
and
tran
sfer
in
fras
tru
ctu
re
• A
ris
k-b
ase
d in
teg
rity
ass
ura
nce
p
rog
ram
fo
r st
ora
ge
vess
els
and
p
ipel
ines
• A
de
qu
ate
and
app
rop
riat
e em
erg
ency
res
po
nse
cap
abili
ty
• S
pill
res
po
nse
pro
ced
ure
s an
d
trai
nin
g im
ple
men
tati
on
34
Low
• L
eaks
an
d sp
ills
are
mo
st li
kely
to
o
ccu
r in
as
soci
atio
n w
ith
p
ipel
ine
or
eq
uip
men
t fa
ilure
, st
ora
ge
and
h
and
ling
of
pro
du
ct, f
uel
s an
d
chem
ical
s, w
aste
st
ora
ge
and
d
isp
osa
l
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d b
y as
sess
ing
the
imp
act
s o
f a
maj
or
on
sho
re s
pill
or
leak
. It
is
anti
cip
ate
d th
at,
wit
h t
he
ad
op
tio
n
of
man
ag
emen
t co
ntr
ols
an
d
mit
igat
ion
m
easu
res,
th
is
even
t w
ou
ld b
e “U
nlik
ely”
, bu
t co
uld
per
ceiv
ably
b
e o
f “M
ajo
r”
con
seq
uen
ce
Hig
h
Sev
eral
exp
ert
inve
stig
atio
ns/
stu
die
s.
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.2.5
.3
Ad
dit
ive
Eff
ect
s•
All
of
the
abo
ve-
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• A
ll o
f th
e ab
ove
52
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
th
e P
roje
ct w
ill le
ad
to
loca
l so
il co
nta
min
atio
n
that
can
be
rea
dily
re
me
dia
ted
; min
or
imp
act
s to
sp
eci
fic
soil
char
act
eris
tics
, an
d m
ino
r er
osi
on
o
r lo
ss o
f lo
cal
lan
dfo
rms
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9
.2.8
Wheatstone Project Executive Summary
74 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Gro
un
dw
ate
rC
on
stru
ctio
n
Ear
thw
ork
s-
Dre
dg
e M
ater
ial
Pla
cem
ent
Are
as
• M
ou
nd
ing
of
the
wat
er t
able
• A
lter
ed
salt
lo
ad
ing
s to
th
e w
ater
tab
le
• S
eep
ag
e fr
om
th
e p
lace
men
t ar
ea
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• T
he
pla
cem
ent
area
has
be
en
sele
cte
d to
re
du
ce t
he
foo
tpri
nt
use
d
• D
red
ge
d m
ater
ial w
ill b
e co
nta
ine
d
in a
bu
nd
ed
area
Wh
ere
pra
ctic
able
, pla
cem
ent
in t
he
east
ern
hal
f o
f th
e p
lace
men
t ar
ea
will
be
pre
ferr
ed
to li
mit
wat
er
leve
ls in
(an
d se
epa
ge
fro
m)
the
wes
tern
hal
f o
f th
e p
lace
men
t ar
ea
• B
un
ds
will
be
des
ign
ed
to w
ith
stan
d
ero
sio
n d
uri
ng
inu
nd
atio
n e
ven
ts
• D
isch
arg
e o
f d
eca
nt
wat
er d
uri
ng
th
e fi
rst
18-2
4 m
on
ths
will
be
pu
mp
ed
via
pip
elin
e to
a m
arin
e o
utf
all
• In
stal
lati
on
of
a d
rain
ag
e d
itch
to
co
llect
an
d d
iver
t se
epa
ge
• G
rou
nd
wat
er m
on
ito
rin
g
42
Mediu
m•
Th
e p
lace
men
t o
f m
ater
ial i
nto
th
e si
tes
will
pro
mo
te
trap
pin
g o
f fi
nes
in
th
e se
ttle
d
mat
eria
l an
d
red
uce
th
e am
ou
nts
of
fin
es
in s
usp
ensi
on
• D
rain
ag
e o
f d
eca
nt
wat
er o
ver
the
pla
cem
ent
area
will
be
to t
he
sou
th a
way
fro
m
the
Ash
bu
rto
n
Del
ta
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
th
e o
nsh
ore
p
lace
men
t o
f d
red
ge
d m
ater
ial
will
lea
d to
a lo
cal
and
maj
or
chan
ge
in s
ub
-cat
chm
ent
gro
un
dw
ater
re
char
ge
pat
tern
s o
ver
a lo
cal a
rea
ove
r th
e lo
ng
term
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce.
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.3.5
.1
Gro
un
dw
ate
rC
on
stru
ctio
n
and
Op
erat
ion
sP
rese
nce
of
Infr
astr
uct
ure
- P
rese
nce
of
Pla
nt
Pad
, A
cces
s R
oad
, In
fras
tru
ctu
re
Co
rrid
or
and
A
cco
mm
o-
dat
ion
Vill
age
area
• G
rou
nd
wat
er
mo
un
din
g
• C
han
ge
in
gro
un
dw
ater
flo
w
dir
ect
ion
s
• C
han
ge
in
gro
un
dw
ater
q
ual
ity
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• M
on
ito
rin
g b
ore
s 4
4L
ow
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
th
e p
rese
nce
of
the
infr
astr
uct
ure
will
le
ad
to lo
cal a
nd
m
ajo
r ch
ang
e in
su
b-c
atch
men
t g
rou
nd
wat
er
rech
arg
e p
atte
rns
ove
r a
loca
l are
a o
ver
the
lon
g te
rm
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce.
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.3.5
.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 75
Gro
un
dw
ate
rO
per
atio
nO
per
atio
nal
S
pill
s an
d
Lea
ks a
nd
S
torm
wat
er
run
-off
• C
han
ges
to
qu
alit
y o
f g
rou
nd
wat
er3
3M
ediu
m•
Th
is a
ssu
mes
b
enefi
cial
use
s as
w
ell a
s an
e
colo
gic
al v
alu
e as
soci
ate
d w
ith
th
e g
rou
nd
wat
er
reso
urc
es
• A
pp
rop
riat
e d
esig
n, c
on
stru
ctio
n
and
mai
nte
nan
ce o
f st
ora
ge,
h
and
ling
and
tran
sfer
in
fras
tru
ctu
re
• A
re
gu
lar
test
ing
pro
gra
m f
or
sto
rag
e ve
ssel
s an
d p
ipel
ines
• A
de
qu
ate
and
app
rop
riat
e em
erg
ency
res
po
nse
cap
abili
ty
• S
pill
res
po
nse
pro
ced
ure
s an
d
trai
nin
g
• Im
ple
men
tati
on
of
app
rop
riat
e tr
eatm
ent
and
/or
reh
abili
tati
on
te
chn
iqu
es w
her
e si
gn
ifica
nt
imp
act
s to
gro
un
dw
ater
occ
urs
• M
ana
gem
ent
con
tro
ls w
ill b
e im
ple
men
ted
as p
art
of
the
CE
MP
an
d th
e O
EM
P
44
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d b
y as
sess
ing
the
imp
act
s o
f a
maj
or
on
sho
re s
pill
or
leak
. It
is
anti
cip
ate
d th
at,
wit
h t
he
ad
op
tio
n
of
man
ag
emen
t co
ntr
ols
an
d
mit
igat
ion
m
easu
res,
th
is
even
t w
ou
ld b
e “U
nlik
ely”
, bu
t co
uld
per
ceiv
ably
b
e o
f “M
od
erat
e”
con
seq
uen
ce
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce.
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.3.5
.3
Ap
pen
dix
U
1
Gro
un
dw
ate
rA
dd
itiv
e E
ffe
cts
• A
ll o
f th
e ab
ove
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ll o
f th
e ab
ove
42
Mediu
m•
Ad
dit
ive
risk
ra
nki
ng
is b
ase
d
on
th
e h
igh
est
risk
–
imp
act
s to
g
rou
nd
wat
er f
rom
th
e o
nsh
ore
d
red
ge
pla
cem
ent
area
op
tio
n
• T
he
Pro
ject
is
con
sid
ere
d to
hav
e an
ove
rall
me
diu
m
resi
du
al r
isk
of
sig
nifi
can
t im
pa
ct
on
gro
un
dw
ater
af
ter
the
imp
lem
enta
tio
n o
f ap
pro
pri
ate
mit
igat
ion
co
ntr
ols
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Sh
ort
-ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9
.3.8
Wheatstone Project Executive Summary
76 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Su
rface
W
ate
rC
on
stru
ctio
n
Ear
thw
ork
s-
Cle
arin
g an
d
Dis
turb
ance
of
Su
rfa
ce S
oils
• In
crea
sed
run
off
an
d er
osi
on
• In
crea
sed
mo
bili
ty
of
sed
imen
ts
• In
crea
sed
se
dim
ent
loa
ds
and
sed
imen
t co
nce
ntr
atio
ns
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
on
tro
l mea
sure
s m
ay in
clu
de
eng
ine
erin
g so
luti
on
s su
ch a
s p
erim
eter
bu
nd
s an
d cu
lver
ts,
sed
imen
tati
on
po
nd
s, u
se o
f si
lt
fen
ces
and
pla
cem
ent
of
rock
at
the
surf
ace
wat
er r
elea
se p
oin
ts
• A
sys
tem
of
dra
ins
will
be
con
stru
cte
d to
div
ert
run
off
fro
m
the
Pla
nt
Pa
d to
sto
rm w
ater
se
dim
enta
tio
n p
on
ds
52
Low
• S
urf
ace
wat
er in
th
e lo
cal
envi
ron
men
t is
re
gu
larl
y tu
rbid
; a
cco
rdin
gly
it m
ay
be
assu
me
d th
at
thes
e h
abit
ats
are
resi
lien
t to
p
ote
nti
al im
pa
cts
fro
m s
ed
imen
t in
st
ream
flo
w a
nd
ti
dal
rea
ches
of
the
loca
l w
ater
cou
rse
• T
he
resi
du
al r
isk
ran
kin
g w
as
ob
tain
ed
as it
is
likel
y th
at m
ino
r ch
ang
es t
o lo
cal
wat
er r
eso
urc
es,
may
res
ult
in lo
cal
sho
rt-t
erm
an
d
smal
l re
du
ctio
n in
w
ater
qu
alit
y w
ith
n
o e
xce
ed
ence
of
bas
elin
e w
ater
q
ual
ity
leve
ls
Rea
son
able
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
le9
.4.5
.1
Su
rface
W
ate
rC
on
stru
ctio
nD
red
ge
Mat
eria
l P
lace
men
t A
rea
• C
han
ges
to
su
rfa
ce w
ater
q
ual
ity
and
q
uan
tity
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• T
he
pla
cem
ent
area
has
be
en
sele
cte
d to
re
du
ce t
he
foo
tpri
nt
use
d.
• D
red
ge
d m
ater
ial w
ill b
e co
nta
ine
d
in a
bu
nd
ed
area
• W
her
e p
ract
icab
le, p
lace
men
t in
th
e ea
ster
n h
alf
of
the
pla
cem
ent
area
will
be
pre
ferr
ed
to li
mit
wat
er
leve
ls in
(an
d se
epa
ge
fro
m)
the
wes
tern
hal
f o
f th
e p
lace
men
t ar
ea
• B
un
ds
will
be
des
ign
ed
to w
ith
stan
d
ero
sio
n d
uri
ng
inu
nd
atio
n e
ven
ts
• D
isch
arg
e o
f d
eca
nt
wat
er d
uri
ng
th
e fi
rst
18-2
4 m
on
ths
will
be
pu
mp
ed
via
pip
elin
e to
a m
arin
e o
utf
all
• In
stal
lati
on
of
a d
rain
ag
e d
itch
to
co
llect
an
d d
iver
t se
epa
ge
• S
urf
ace
wat
er m
on
ito
rin
g
42
Mediu
m•
Imp
act
s to
mar
ine
envi
ron
men
t fr
om
n
ears
ho
re d
eca
nt
wat
er d
isp
osa
l d
iscu
sse
d an
d
asse
sse
d in
C
hap
ter
8
• Im
pa
cts
to
surf
ace
wat
er m
ay
no
t b
e m
easu
rab
le
• T
he
dre
dg
e m
ater
ial i
s in
ert,
th
us
the
seaw
ater
w
ou
ld n
ot
acc
um
ula
te
dis
solv
ed
salt
s ex
cep
t b
y ev
apo
rati
on
p
roce
sses
(Co
nt’
d)
Rea
son
able
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e.
No
t A
pp
licab
leS
ect
ion
9
.4.5
.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 77
• T
he
resi
du
al r
isk
ran
kin
g w
as
ob
tain
ed
as it
is
likel
y th
at lo
cal
and
maj
or
chan
ge
in s
ub
-cat
chm
ent
surf
ace
wat
er
hyd
rolo
gy
and
fl
ow
re
gim
es o
ver
a lo
cal a
rea
ove
r th
e lo
ng
term
w
ou
ld o
ccu
r
Su
rface
W
ate
rC
on
stru
ctio
nP
ote
nti
al
Oxi
dat
ion
of
Aci
d S
ulf
ate
So
ils
• O
xid
atio
n
resu
ltin
g in
g
ener
atio
n o
f a
cid
an
d/o
r m
ob
ilisa
tio
n o
f m
etal
s
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• In
form
wo
rkfo
rce
of
the
nat
ure
an
d
po
ten
tial
imp
act
s o
f P
AS
S
• R
evie
w P
AS
S R
isk
Map
to
asc
erta
in
wh
eth
er P
AS
S w
ill b
e d
istu
rbe
d
• A
void
th
e d
istu
rban
ce o
f P
AS
S
wh
ere
po
ssib
le
• R
efer
to
th
e C
EM
P f
or
trea
tmen
t an
d d
isp
osa
l str
ate
gie
s w
hen
d
istu
rban
ce is
un
avo
idab
le
• M
ana
gem
ent
of
PA
SS
mat
eria
l u
tilis
ing
bes
t m
ana
gem
ent
pra
ctic
e m
eth
od
s, a
s o
utl
ine
d in
th
e C
EM
P
53
Low
• T
he
resi
du
al r
isk
ran
kin
g w
as
ob
tain
ed
as it
is
po
ssib
le t
hat
m
ino
r ch
ang
es t
o
loca
l wat
er
reso
urc
es,
resu
ltin
g in
a lo
cal
sho
rt-t
erm
an
d
smal
l re
du
ctio
n in
w
ater
qu
alit
y, w
ith
n
o e
xce
ed
ence
of
bas
elin
e w
ater
q
ual
ity,
co
uld
o
ccu
r
Hig
h
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.4.5
.3
Ap
pen
dix
U
1
Su
rface
W
ate
rO
per
atio
nP
rese
nce
of
the
Faci
litie
s•
Ch
ang
es t
o fl
oo
d
dep
ths
and
flo
od
el
evat
ion
s
• C
han
ges
to
str
eam
fl
ow
per
iod
s an
d
pea
k d
isch
arg
es
• C
han
ges
to
str
eam
fl
ow
vel
oci
ties
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• Fa
cilit
ies
des
ign
ed
to li
mit
imp
act
s to
su
rfa
ce w
ater
sys
tem
s
• C
ulv
erts
are
inco
rpo
rate
d in
to t
he
hyd
rod
ynam
ic fl
ow
mo
del
fo
r d
rain
ag
e cr
oss
ing
s tr
aver
sed
by
the
roa
d an
d in
fras
tru
ctu
re c
orr
ido
r
52
Low
• F
loo
d m
od
ellin
g
pre
dic
ts t
hat
ch
ang
es t
o fl
oo
d
dep
ths
and
el
evat
ion
s m
ay n
ot
be
mea
sura
ble
• T
he
Res
idu
al r
isk
to s
urf
ace
wat
er
fro
m t
he
pre
sen
ce
of
faci
litie
s w
as
ob
tain
ed
as it
is
likel
y th
at lo
cal
and
min
or
chan
ge
in s
ub
-cat
chm
ent
surf
ace
wat
er
hyd
rolo
gy
and
fl
ow
re
gim
es c
ou
ld
occ
ur
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9
.4.5
.4
Su
rface
W
ate
rO
per
atio
ns
Sp
ills
and
L
eaks
• C
han
ges
to
su
rfa
ce w
ater
q
ual
ity
- N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• P
rim
ary
and
seco
nd
ary
con
tain
men
t, w
her
e ap
pro
pri
ate
• L
oa
din
g al
arm
s
• Tr
eatm
ent
of
was
te w
ater
at
sou
rce
• M
on
ito
rin
g o
f sy
stem
s fo
r ea
rly
spill
d
ete
ctio
n
34
Low
• T
he
resi
du
al r
isk
ran
kin
g as
sess
es
the
imp
act
s o
f a
maj
or
on
sho
re
spill
or
leak
. It
is
anti
cip
ate
d th
at,
wit
h t
he
ad
op
tio
n
of
man
ag
emen
t co
ntr
ols
an
d
mit
igat
ion
m
easu
res,
th
is
even
t w
ou
ld b
e “U
nlik
ely”
, bu
t co
uld
per
ceiv
ably
b
e o
f “M
ajo
r”
con
seq
uen
ce
Hig
h
Sev
eral
exp
ert
inve
stig
atio
n/
stu
die
s
No
t A
pp
licab
leS
ect
ion
9
.4.5
.5
Wheatstone Project Executive Summary
78 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Su
rface
W
ate
rA
dd
itiv
e E
ffe
cts
• A
ll o
f th
e ab
ove
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ll o
f th
e ab
ove
42
Mediu
m•
Ad
dit
ive
risk
ra
nki
ng
is s
tro
ng
ly
infl
uen
ced
by
the
hig
hes
t ri
sk
– im
pa
cts
to
surf
ace
wat
er
fro
m t
he
on
sho
re
dre
dg
e p
lace
men
t ar
ea o
pti
on
• T
he
Pro
ject
is
con
sid
ere
d to
hav
e an
ove
rall
me
diu
m
resi
du
al r
isk
of
sig
nifi
can
t im
pa
ct
on
su
rfa
ce w
ater
af
ter
the
imp
lem
enta
tio
n o
f ap
pro
pri
ate
mit
igat
ion
co
ntr
ols
Rea
son
able
Sh
ort
ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
.
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9
.4.8
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 79
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
V
eg
etat
ion
C
lear
ing
-
Sit
e P
rep
arat
ion
an
d S
ite
Acc
ess
• L
oss
of
flo
ra a
nd
ve
get
atio
n
• E
rosi
on
• S
pre
ad
of
intr
od
uce
d fl
ora
• O
ver-
clea
rin
g
• In
crea
sed
surf
ace
w
ater
ru
no
ff a
nd
ve
loci
ty le
ad
ing
to
incr
ease
d
sed
imen
tati
on
on
ve
get
atio
n
ou
tsid
e o
f cl
eare
d
area
33
Mediu
m•
Ran
kin
g th
e lo
ss
of
con
serv
atio
n
sig
nifi
can
t sp
eci
es (
no
t in
div
idu
als)
an
d
com
mu
nit
ies
asso
ciat
ed
wit
h
veg
etat
ion
cl
eari
ng
• R
isk
ran
kin
g
con
sid
ere
d
po
ten
tial
fo
r d
om
gas
pip
elin
e al
ign
men
t th
rou
gh
Can
e R
iver
C
on
serv
atio
n
Par
k (C
RC
P)
• D
ecl
are
d R
are
Flo
ra (
DR
F)
are
con
sid
ere
d
un
likel
y to
be
pre
sen
t, b
ase
d
on
su
rvey
s co
mp
lete
d to
d
ate.
Ris
k ra
nki
ng
was
b
ase
d o
n w
ors
t ca
se, i
n t
he
even
t th
at D
RF
are
fou
nd
in f
utu
re
surv
eys.
D
istu
rban
ce
fro
m p
ipel
ine
con
stru
ctio
n t
o
CR
CP
is n
ot
exp
ect
ed
to
seve
r co
mm
un
itie
s as
th
e d
om
gas
p
ipel
ine
alig
nm
ent
is
pro
po
sed
to b
e p
aral
lel t
o
exis
tin
g ro
ad
re
serv
e w
her
e th
ere
is e
xist
ing
d
istu
rban
ce
• Im
ple
men
t ve
get
atio
n
clea
rin
g p
roce
ss
• L
imit
cle
arin
g to
des
ign
ate
d ar
eas
and
clea
rly
mar
k th
ese
area
s
• U
tilis
e p
revi
ou
sly
clea
red
area
s w
her
e p
ract
icab
le
• Im
ple
men
t ve
hic
le h
ygie
ne
pro
ced
ure
s ap
pro
pri
ate
for
the
site
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
• D
evel
op
flo
ra a
nd
veg
etat
ion
m
ana
gem
ent
as p
art
of
the
CE
MP
• R
ehab
ilita
te d
istu
rbe
d ar
eas
wh
ere
pra
ctic
able
• W
ee
d m
ana
gem
ent
pro
ced
ure
s
42
Mediu
m•
Th
e ve
get
atio
n
un
its
and
flo
ra
wit
hin
th
e P
roje
ct
area
are
gen
eral
ly
wel
l rep
rese
nte
d
thro
ug
ho
ut
the
loca
l are
a an
d
reg
ion
or
no
t re
stri
cte
d to
th
e P
roje
ct a
rea
• N
o D
RF
loca
ted
w
ith
in P
roje
ct
area
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
cl
eari
ng
of
veg
etat
ion
is
likel
y to
lea
d to
a
loca
l lo
ng
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d F
lora
sp
eci
es
Hig
h
Sev
eral
exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a.
No
t A
pp
licab
leS
ect
ion
9
.5.5
.1
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
80 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
Ear
thw
ork
s-
Sit
e P
rep
arat
ion
an
d Tr
ench
ing
• In
tro
du
ctio
n a
nd
/o
r sp
rea
d o
f in
tro
du
ced
flo
ra
• C
han
ges
to
n
atu
ral d
rain
ag
e p
atte
rns
and
g
rou
nd
wat
er
infi
ltra
tio
n
resu
ltin
g in
a
dve
rse
imp
act
s to
ve
get
atio
n
• In
crea
sed
du
st
pro
du
ctio
n
resu
ltin
g in
sm
oth
erin
g o
f u
nd
istu
rbe
d
veg
etat
ion
• M
ob
ilisa
tio
n o
f a
cid
s an
d m
etal
s fr
om
oxi
dis
atio
n o
f P
AS
S
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• Im
ple
men
t ve
hic
le h
ygie
ne
pro
ced
ure
s ap
pro
pri
ate
for
the
site
• W
ee
d m
ana
gem
ent
pro
ced
ure
s
• S
urf
ace
wat
er m
ana
gem
ent
such
as
dra
ins,
set
tlem
ent
po
nd
s et
c
• D
ust
su
pp
ress
ion
as
req
uir
ed
• Im
ple
men
t P
AS
S m
ana
gem
ent
mea
sure
s
52
Low
• T
his
asp
ect
as
sum
es t
hat
all
veg
etat
ion
wit
hin
th
e P
roje
ct a
rea
has
be
en r
emo
ved
(r
isk
to v
eg
etat
ion
fr
om
cle
arin
g
asse
sse
d ab
ove
)
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
ea
rth
wo
rks
cou
ld
lea
d to
an
in
crea
se in
th
e ab
un
dan
ce o
f an
ex
isti
ng
n
on
-nat
ive
flo
ra
spe
cies
wit
hin
th
e P
roje
ct a
rea
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.2
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
an
d O
per
atio
ns
Veh
icu
lar
act
ivit
y-
Sit
e A
cces
s,
Co
nst
ruct
ion
V
ehic
les
on
S
ite
and
H
aula
ge
Veh
icle
s
• D
ire
ct im
pa
ct a
s a
resu
lt o
f o
ff-r
oa
d
dri
vin
g
• In
tro
du
ctio
n o
r sp
rea
d o
f in
tro
du
ced
flo
ra
spe
cies
• In
crea
sed
ero
sio
n
• In
crea
sed
du
st
emis
sio
ns
53
Low
• M
ain
co
nce
rn is
th
e sp
rea
d o
f ex
isti
ng
we
ed
s b
eyo
nd
the
site
an
d ra
nki
ng
is
bas
ed
on
th
is
• S
urv
eys
at t
he
site
hav
e fo
un
d
Mes
qu
ite
pre
sen
t
• T
he
risk
as
sess
men
t as
sum
es t
hat
ef
fect
ive
qu
aran
tin
e an
d
hyg
ien
e m
easu
res
will
be
app
lied
to
man
ag
e th
e sp
rea
d o
f w
ee
ds
• M
ana
ge
po
ten
tial
du
st g
ener
atio
n
thro
ug
h im
ple
men
tati
on
of
mea
sure
s to
be
ou
tlin
ed
in t
he
CE
MP
an
d O
EM
P.
• C
lear
ly m
ark
auth
ori
sed
acc
ess
tra
cks
and
roa
ds
• C
on
stru
ct a
cces
s ro
ute
s in
a
man
ner
th
at r
ed
uce
s p
ote
nti
al f
or
ero
sio
n
• W
ee
d m
ana
gem
ent
pro
ced
ure
s
63
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
ve
hic
le a
ctiv
ity
cou
ld p
oss
ibly
re
sult
in a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a sp
eci
es o
r ve
get
atio
n
com
mu
nit
y
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.3
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 81
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
an
d O
per
atio
ns
Fir
e-
Veh
icle
an
d
Ma
chin
ery
Act
ivit
y an
d
Em
plo
yee
Act
ivit
y (e
.g.
smo
kin
g)
• In
crea
sed
risk
of
fire
res
ult
ing
fro
m
incr
ease
d ve
hic
le
and
ma
chin
ery
act
ivit
y
• A
lter
ed
fire
re
gim
es r
esu
ltin
g
fro
m in
crea
sed
in
cid
ence
of
fire
le
ad
ing
to r
eg
ion
al
imp
act
on
sp
eci
es
abu
nd
ance
an
d
div
ersi
ty
63
Ver
y
Low
• E
nvi
ron
men
t is
su
bje
ct t
o n
atu
ral
fire
s
• R
isk
asse
ssm
ent
bas
ed
on
th
e lik
elih
oo
d o
f im
pa
cts
of
fire
(c
ause
d b
y th
e P
roje
ct)
on
flo
ra
and
veg
etat
ion
• T
her
e w
ill b
e m
ana
gem
ent
mea
sure
s o
n s
ite
to c
on
tain
fire
s
• F
ire
fig
hti
ng
and
fire
aw
aren
ess
trai
nin
g fo
r p
roje
ct p
erso
nn
el
• E
stab
lish
a c
on
tin
uo
us
fire
bre
ak
aro
un
d th
e p
erim
eter
of
the
LN
G
pla
nt
thro
ug
h v
eg
etat
ion
cle
aran
ce
54
Ver
y
Low
• P
ote
nti
al im
pa
cts
fro
m fi
re t
o fl
ora
an
d ve
get
atio
n
ou
tsid
e o
f th
e P
roje
ct a
rea
is n
ot
bel
ieve
d to
be
sig
nifi
can
t as
fire
s a
dja
cen
t to
th
e P
roje
ct w
ill b
e lim
ite
d o
r ra
pid
ly
exti
ng
uis
he
d
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
a fi
re
wo
uld
res
ult
in a
lo
cal s
ho
rt-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
spe
cies
or
veg
etat
ion
co
mm
un
ity
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.4
Flo
ra &
V
eget
ati
on
Op
erat
ion
sA
ir E
mis
sio
ns-
P
lan
t O
per
atio
ns
and
Veh
icle
M
ove
men
ts
• D
etri
men
t to
ve
get
atio
n a
s a
resu
lt o
f ai
r em
issi
on
s fr
om
th
e p
roce
ssin
g
faci
lity
54
Ver
y
Low
• R
isk
asse
ssm
ent
bas
ed
on
m
ang
rove
s b
ein
g
the
mo
st
sen
siti
ve
rece
pto
r to
g
rou
nd
leve
l o
zon
e (s
eco
nd
ary
po
lluta
nt)
• A
n A
ir Q
ual
ity
scre
enin
g
asse
ssm
ent
(Au
splu
me
Ver
sio
n 6
.0)
ind
icat
es t
hat
g
rou
nd
leve
l o
zon
e co
nce
ntr
atio
ns
are
un
likel
y to
ex
cee
d
envi
ron
men
tal
limit
s (N
EP
M)
du
rin
g n
orm
al
op
erat
ion
s
• P
ho
toch
emic
al
rea
ctio
ns
asso
ciat
ed
wit
h
seco
nd
ary
po
lluta
nts
th
at
crea
te t
he
gre
ates
t im
pa
ct
on
ve
get
atio
n a
re
likel
y to
occ
ur
at
leve
ls b
elo
w
envi
ron
men
tal
limit
s - W
HO
Air
Q
ual
ity
Gu
idel
ines
fo
r ve
get
atio
n
• M
ana
gem
ent
of
the
pro
cess
ing
o
per
atio
n t
o r
ed
uce
po
lluti
ng
em
issi
on
s as
low
as
reas
on
ably
p
ract
icab
le
• R
eg
ula
r m
ain
ten
ance
of
eq
uip
men
t fo
r g
oo
d p
erfo
rman
ce a
nd
red
uce
d
emis
sio
ns
• P
lan
nin
g o
f n
on
-ro
uti
ne
(pla
nn
ed
) m
ain
ten
ance
sh
utd
ow
ns
to r
ed
uce
em
issi
on
s, w
her
e p
ract
icab
le
• O
ng
oin
g m
on
ito
rin
g o
f em
issi
on
s fr
om
th
e fa
cilit
y to
det
erm
ine
the
leve
l of
po
lluti
ng
emis
sio
ns
• Im
ple
men
tati
on
of
rem
ed
ial a
ctio
n
sho
uld
em
issi
on
leve
ls e
xce
ed
a
gre
ed
leve
ls
64
Ver
y
Low
• P
ote
nti
al im
pa
cts
to m
ang
rove
sy
stem
s ar
e as
sess
ed
in
Ch
apte
r 8
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
air
em
issi
on
s w
ill
imp
act
on
th
e lo
cal s
ho
rt-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
spe
cies
or
veg
etat
ion
co
mm
un
ity
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.5
Wheatstone Project Executive Summary
82 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
Alt
erat
ion
of
Su
rfa
ce W
ater
D
rain
ag
e - S
ite
Pre
par
atio
n,
Ear
thw
ork
s an
d P
rese
nce
o
f in
fras
tru
ctu
re
• D
etri
men
t to
ve
get
atio
n d
ue
to
chan
ges
in s
urf
ace
d
rain
ag
e p
atte
rns
• A
lter
atio
ns
to
gro
un
d w
ater
in
filt
rati
on
• In
crea
sed
ero
sio
n
lea
din
g to
d
ow
nst
ream
im
pa
cts
on
re
mn
ant
veg
etat
ion
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
etai
n n
atu
ral d
rain
ag
e w
her
e p
ract
icab
le
• Fa
cilit
ies
des
ign
ed
to li
mit
imp
act
s to
su
rfa
ce w
ater
sys
tem
s.
• M
on
ito
r d
ow
n-s
trea
m v
eg
etat
ion
53
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at
alte
rati
on
of
surf
ace
wat
er
dra
ina
ge
cou
ld
lea
d to
a lo
cal
lon
g-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
spe
cies
or
veg
etat
ion
co
mm
un
ity
ou
tsid
e o
f th
e P
roje
ct a
rea
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.6
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
an
d O
per
atio
ns
Du
st
Su
pp
ress
ion
-A
pp
licat
ion
of
salin
e w
ater
or
oth
er
sup
pre
ssan
ts
for
du
st
con
tro
l
• D
etri
men
t to
ve
get
atio
n d
ue
to
ove
rsp
ray
or
run
-off
of
sup
ress
ents
use
d
for
du
st c
on
tro
l
• In
crea
sed
n
utr
ien
t lo
ad
ing
• In
crea
sed
p
ote
nti
al f
or
we
ed
g
row
th o
n
dis
turb
ed
gro
un
d
be
cau
se o
f av
aila
bili
ty o
f n
utr
ien
ts
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• Fr
ing
ing
veg
etat
ion
mo
nit
ori
ng
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P a
nd
O
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
m
ana
ge
the
gen
erat
ion
of
du
st
• S
pe
cifi
c d
ust
co
ntr
ol m
easu
res
wo
uld
als
o b
e im
ple
men
ted
as p
art
of
the
stan
dar
d o
per
atio
n o
f th
e co
ncr
ete
bat
chin
g p
lan
t
53
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at d
ust
su
pp
ress
ion
co
uld
re
sult
in a
loca
l lo
ss o
f a
spe
cies
or
veg
etat
ion
co
mm
un
ity
ou
tsid
e o
f th
e p
roje
ct a
rea
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.7
Ap
pen
dix
U
1
Flo
ra &
V
eget
ati
on
Op
erat
ion
s L
eaks
& S
pill
s-
Veh
icle
R
efu
ellin
g,
Bre
akd
ow
ns
and
Pla
nt
Op
erat
ion
s
• D
etri
men
t to
ve
get
atio
n d
ue
to
chan
ges
to
su
rfa
ce w
ater
an
d
gro
un
dw
ater
q
ual
ity
• D
ire
ct im
pa
ct o
f sp
ills
on
ve
get
atio
n
43
Low
• R
isk
asse
ssm
ent
assu
mes
th
at
effe
ctiv
e st
ora
ge
and
man
ag
emen
t m
easu
res
will
be
in p
lace
• A
pp
rop
riat
e st
ora
ge
vess
els,
co
nta
inm
ent
faci
litie
s, t
ran
sfer
e
qu
ipm
ent
and
han
dlin
g m
eth
od
s
• C
aptu
re a
nd
trea
tmen
t o
f ru
no
ff
fro
m o
per
atio
nal
are
as, f
uel
far
ms
and
bu
nd
ed
area
s
• A
pp
rop
riat
e sp
ill r
esp
on
se
eq
uip
men
t, e
mer
gen
cy r
esp
on
se
trai
nin
g an
d sp
ill c
on
tin
gen
cy
pla
nn
ing
44
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
leak
s an
d sp
ills
will
hav
e a
sho
rt-t
erm
im
pa
ct o
n n
ativ
e ve
get
atio
n o
uts
ide
the
Pro
ject
are
a
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.8
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 83
Flo
ra &
V
eget
ati
on
Co
nst
ruct
ion
an
d O
per
atio
ns
Dre
dg
e M
ater
ial
Pla
cem
ent
Are
a- S
eep
ag
e fr
om
P
lace
men
t A
rea
• D
etri
men
t to
ve
get
atio
n o
uts
ide
the
pla
nt
foo
tpri
nt
du
e to
ch
ang
es in
su
rfa
ce a
nd
g
rou
nd
wat
er
qu
alit
y an
d
qu
anti
ty
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
on
ito
rin
g b
ore
s
• M
on
ito
rin
g an
d m
ana
gem
ent
pro
gra
m (a
s a
par
t o
f th
e C
EM
P a
nd
th
e O
EM
P)
• C
on
tain
men
t an
d co
ntr
olle
d re
leas
e st
rate
gie
s in
clu
din
g se
dim
ent
po
nd
s
• D
isch
arg
e vi
a a
con
tro
l po
int
(e.g
. w
eir
bo
x)
• T
he
pla
cem
ent
area
has
be
en
sele
cte
d to
re
du
ce t
he
foo
tpri
nt
use
d
• D
red
ge
d m
ater
ial w
ill b
e co
nta
ine
d
in a
bu
nd
ed
area
• W
her
e p
ract
ical
, pla
cem
ent
in t
he
east
ern
hal
f o
f th
e p
lace
men
t ar
ea
will
be
pre
ferr
ed
to li
mit
wat
er
leve
ls in
(an
d se
epa
ge
fro
m)
the
wes
tern
hal
f o
f th
e p
lace
men
t ar
ea
• D
isch
arg
e o
f d
eca
nt
wat
er d
uri
ng
th
e fi
rst
18-2
4 m
on
ths
will
be
pu
mp
ed
via
pip
elin
e to
a m
arin
e o
utf
all
• In
stal
lati
on
of
a d
rain
ag
e d
itch
to
co
llect
an
d d
iver
t se
epa
ge
53
Low
• It
is a
ssu
me
d th
at
the
flo
ra a
nd
ve
get
atio
n o
uts
ide
of
the
pro
ject
are
a co
uld
be
sub
ject
to
an
ind
ire
ct r
isk
sho
uld
th
e d
red
ge
mat
eria
l p
lace
men
t ar
ea
cau
se im
pa
cts
thro
ug
h s
ea-w
ater
se
epa
ge
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
e d
red
ge
mat
eria
l p
lace
men
t ar
ea
may
cau
se a
loca
l lo
ng
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a sp
eci
es o
r ve
get
atio
n
com
mu
nit
y o
uts
ide
the
Pro
ject
are
a
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns/
stu
die
s
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.5
.9
Ap
pen
dix
U
1
Flo
ra &
V
eget
ati
on
Ad
dit
ive
Eff
ect
s•
All
of
the
abo
ve-
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• A
ll o
f th
e ab
ove
42
Mediu
m•
Flo
ra a
nd
ve
get
atio
n
pre
sen
t in
th
e P
roje
ct a
rea
are
gen
eral
ly
wid
esp
rea
d an
d
wel
l rep
rese
nte
d
in t
he
surr
ou
nd
ing
re
gio
n
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a lo
cal
lon
g-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
Co
mm
on
wea
lth
or
WA
Lis
ted
Flo
ra
spe
cies
co
uld
o
ccu
r w
ith
in t
he
Pro
ject
are
a d
ue
to c
lear
ing
du
rin
g
con
stru
ctio
n
act
ivit
ies
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.5.8
Wheatstone Project Executive Summary
84 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
Ve
get
atio
n
Cle
arin
g –
Sit
e P
rep
arat
ion
• L
oss
or
alte
rati
on
o
f te
rres
tria
l fa
un
a h
abit
at
• L
oss
of
po
pu
lati
on
s
• D
ire
ct im
pa
ct w
ith
m
ach
iner
y
• Fr
ag
men
tati
on
of
terr
estr
ial f
aun
a h
abit
at r
esu
ltin
g
in r
ed
uce
d ar
ea o
f h
abit
at, a
lter
ed
b
ehav
iou
ral
pat
tern
s et
c
33
Mediu
m•
A c
on
serv
ativ
e ap
pro
ach
was
ta
ken
in t
he
even
t th
at
pro
tect
ed
fau
na
spe
cies
wer
e p
rese
nt
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d
wit
hin
th
e lo
cal
and
reg
ion
al a
rea
• M
on
ito
rin
g an
d m
ana
gem
ent
pro
gra
m a
s p
art
of
the
CE
MP
• Im
ple
men
t ve
get
atio
n c
lear
ing
p
roce
ss
• R
ehab
ilita
te d
istu
rbe
d ar
eas
wh
ere
pra
ctic
able
• In
spe
ct c
lear
ed
area
s im
me
dia
tely
fo
r p
rese
nce
of
inju
red
anim
als
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
53
Low
• N
o im
pa
cts
to t
he
stat
us
of
any
thre
aten
ed
fau
na
are
exp
ect
ed
.
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d w
ith
in
the
loca
l an
d
reg
ion
al a
rea
.
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
lo
cal s
ho
rt-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
Co
mm
on
wea
lth
or
WA
Lis
ted
Fau
na
spe
cies
co
uld
o
ccu
r.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.1
Ap
pen
dix
U
1
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
Ear
thw
ork
s –
Sit
e P
rep
arat
ion
an
d
Co
nst
ruct
ion
• M
od
ifica
tio
n o
r d
estr
uct
ion
of
fau
na
hab
itat
• E
ntr
apm
ent
in
tren
ches
an
d
bu
nd
s
• D
ire
ct im
pa
ct w
ith
m
ach
iner
y
44
Low
• R
anki
ng
is b
ase
d
on
ris
k o
f fa
un
a fa
llin
g in
to t
he
tren
ches
• R
isk
asse
ssm
ent
assu
mes
th
at
effe
ctiv
e m
ana
gem
ent
mea
sure
s ar
e in
p
lace
• M
on
ito
rin
g an
d m
ana
gem
ent
pro
gra
m a
s p
art
of
the
CE
MP
• C
on
du
ct in
spe
ctio
n o
f al
l op
en
tren
ches
an
d re
mo
ve a
ny
trap
pe
d
fau
na
. Pro
vid
e es
cap
e ro
ute
s fr
om
tr
ench
es, o
r fe
nci
ng
tren
ches
off
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
53
Low
• N
o im
pa
cts
to t
he
stat
us
of
any
thre
aten
ed
fau
na
are
exp
ect
ed
.
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d w
ith
in
the
loca
l an
d
reg
ion
al a
rea
. Th
e re
sid
ual
ris
k ra
nki
ng
has
be
en
ob
tain
ed
as it
is
po
ssib
le t
hat
a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a te
rres
tria
l fau
na
spe
cies
co
uld
o
ccu
r.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.2
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 85
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Fir
e-
Veh
icle
an
d
Ma
chin
ery
Act
ivit
y an
d
Em
plo
yee
Act
ivit
y (e
.g.
smo
kin
g)
• In
crea
sed
risk
of
fire
res
ult
ing
fro
m
incr
ease
d ve
hic
le
and
ma
chin
ery
act
ivit
y
• A
lter
ed
fire
re
gim
es r
esu
ltin
g
fro
m in
crea
sed
in
cid
ence
of
fire
le
ad
ing
to r
eg
ion
al
imp
act
on
sp
eci
es
abu
nd
ance
an
d
div
ersi
ty
63
Ver
y
Low
• E
nvi
ron
men
t is
su
bje
ct t
o n
atu
ral
fire
s
• R
isk
asse
ssm
ent
bas
ed
on
th
e lik
elih
oo
d o
f im
pa
cts
of
fire
(c
ause
d b
y th
e P
roje
ct)
on
flo
ra
and
veg
etat
ion
• T
her
e w
ill b
e m
ana
gem
ent
mea
sure
s o
n s
ite
to c
on
tain
fire
s
• A
pp
rop
riat
e fi
refi
gh
tin
g e
qu
ipm
ent
on
sit
e, t
rain
ing
of
site
per
son
nel
• E
stab
lish
a c
on
tin
uo
us
fire
bre
ak
aro
un
d th
e p
erim
eter
of
the
LN
G
pla
nt
thro
ug
h v
eg
etat
ion
cle
aran
ce
• C
on
du
ct c
on
stru
ctio
n a
nd
o
per
atio
ns
in c
lear
ed
area
s, w
her
e p
ract
icab
le
• C
aref
ully
man
ag
e ve
hic
le a
ctiv
ity
in
hig
h r
isk
area
s (e
.g. l
on
g g
rass
)
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
54
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
fire
w
ill o
ccu
r as
a
resu
lt o
f th
e P
roje
ct, b
ut
wo
uld
le
ad
to a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d
terr
estr
ial F
aun
a sp
eci
es
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t S
ign
ifica
nt
Se
ctio
n
9.6
.5.3
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Veh
icle
A
ctiv
ity-
Sit
e A
cces
s an
d O
n-s
ite
Mo
vem
ents
• D
ire
ct im
pa
ct w
ith
ve
hic
les
• In
crea
sed
roa
d ki
ll re
sult
ing
in
attr
act
ion
of
scav
eng
ers
(e.g
. ra
pto
rs)
lea
din
g to
m
ore
ro
ad
kill
53
Low
• M
ain
co
nce
rn is
tr
affi
c o
nsi
te a
nd
tr
avel
to
an
d
fro
m s
ite
• Tr
affi
c w
ill a
lso
b
e in
crea
sed
on
ex
isti
ng
roa
ds
• P
ub
lic p
erce
pti
on
w
as c
on
sid
ere
d
as p
art
of
asse
ssm
ent
• V
ehic
les
will
be
req
uir
ed
to k
eep
to
au
tho
rise
d a
cces
s tr
ack
s an
d ro
ad
s an
d th
ese
will
be
clea
rly
mar
ked
to
faci
litat
e th
is
• R
ed
uce
d ve
hic
le s
pe
ed
s, a
pp
ly
spe
ed
limit
s
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
52
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at
veh
icle
imp
act
s m
ay o
ccu
r, a
nd
th
at t
his
may
lea
d
to a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d
terr
estr
ial F
aun
a sp
eci
es.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.4
Ter
rest
rial
Fau
na
Op
erat
ion
sF
lari
ng
-
Pla
nt
Op
erat
ion
s
• D
ire
ct im
pa
ct t
o
bir
ds
roo
stin
g in
in
fras
tru
ctu
re
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• H
eig
ht
of
the
sta
cks
• R
esid
ual
hea
t o
f th
e st
ack
s w
hen
n
ot
flar
ing
• C
on
tin
uo
us
pilo
t th
at m
ay
dis
cou
rag
e b
ird
s fr
om
lan
din
g
• H
eat
and
visi
ble
flam
e d
uri
ng
fl
arin
g
65
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
ere
is a
rem
ote
lik
elih
oo
d th
at
flar
ing
cou
ld le
ad
to
a lo
cal
sho
rt-t
erm
re
du
ctio
n in
ab
un
dan
ce o
f a
terr
estr
ial f
aun
a sp
eci
es.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.5
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
Ve
get
atio
n
Cle
arin
g –
Sit
e P
rep
arat
ion
• L
oss
or
alte
rati
on
o
f te
rres
tria
l fa
un
a h
abit
at
• L
oss
of
po
pu
lati
on
s
• D
ire
ct im
pa
ct w
ith
m
ach
iner
y
• Fr
ag
men
tati
on
of
terr
estr
ial f
aun
a h
abit
at r
esu
ltin
g
in r
ed
uce
d ar
ea o
f h
abit
at, a
lter
ed
b
ehav
iou
ral
pat
tern
s et
c
33
Mediu
m•
A c
on
serv
ativ
e ap
pro
ach
was
ta
ken
in t
he
even
t th
at
pro
tect
ed
fau
na
spe
cies
wer
e p
rese
nt
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d
wit
hin
th
e lo
cal
and
reg
ion
al a
rea
• M
on
ito
rin
g an
d m
ana
gem
ent
pro
gra
m a
s p
art
of
the
CE
MP
• Im
ple
men
t ve
get
atio
n c
lear
ing
p
roce
ss
• R
ehab
ilita
te d
istu
rbe
d ar
eas
wh
ere
pra
ctic
able
• In
spe
ct c
lear
ed
area
s im
me
dia
tely
fo
r p
rese
nce
of
inju
red
anim
als
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
53
Low
• N
o im
pa
cts
to t
he
stat
us
of
any
thre
aten
ed
fau
na
are
exp
ect
ed
.
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d w
ith
in
the
loca
l an
d
reg
ion
al a
rea
.
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
lo
cal s
ho
rt-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
Co
mm
on
wea
lth
or
WA
Lis
ted
Fau
na
spe
cies
co
uld
o
ccu
r.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.1
Ap
pen
dix
U
1
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
Ear
thw
ork
s –
Sit
e P
rep
arat
ion
an
d
Co
nst
ruct
ion
• M
od
ifica
tio
n o
r d
estr
uct
ion
of
fau
na
hab
itat
• E
ntr
apm
ent
in
tren
ches
an
d
bu
nd
s
• D
ire
ct im
pa
ct w
ith
m
ach
iner
y
44
Low
• R
anki
ng
is b
ase
d
on
ris
k o
f fa
un
a fa
llin
g in
to t
he
tren
ches
• R
isk
asse
ssm
ent
assu
mes
th
at
effe
ctiv
e m
ana
gem
ent
mea
sure
s ar
e in
p
lace
• M
on
ito
rin
g an
d m
ana
gem
ent
pro
gra
m a
s p
art
of
the
CE
MP
• C
on
du
ct in
spe
ctio
n o
f al
l op
en
tren
ches
an
d re
mo
ve a
ny
trap
pe
d
fau
na
. Pro
vid
e es
cap
e ro
ute
s fr
om
tr
ench
es, o
r fe
nci
ng
tren
ches
off
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
53
Low
• N
o im
pa
cts
to t
he
stat
us
of
any
thre
aten
ed
fau
na
are
exp
ect
ed
.
• H
abit
ats
pre
sen
t ar
e w
ell
rep
rese
nte
d w
ith
in
the
loca
l an
d
reg
ion
al a
rea
. Th
e re
sid
ual
ris
k ra
nki
ng
has
be
en
ob
tain
ed
as it
is
po
ssib
le t
hat
a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a te
rres
tria
l fau
na
spe
cies
co
uld
o
ccu
r.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.2
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
86 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
No
ise
Em
issi
on
s-
Pla
nt
Op
erat
ion
s an
d V
ehic
le
Mo
vem
ents
• Te
mp
ora
ry
loca
lise
d
beh
avio
ura
l ch
ang
es (e
.g.
mo
vem
ent
away
fr
om
th
e p
lan
t si
te)
53
Low
• P
roje
ct w
ill
com
ply
wit
h W
A
no
ise
reg
ula
tio
ns
to r
ed
uce
th
e p
ote
nti
al im
pa
ct
of
no
ise
bey
on
d
the
site
b
ou
nd
ary.
• L
imit
no
ise
emis
sio
ns
wh
ere
pra
ctic
able
• To
co
mp
ly w
ith
En
viro
nm
enta
l P
rote
ctio
n (
No
ise)
Re
gu
lati
on
s 19
97
an
d en
viro
nm
enta
l ob
ject
ives
fo
r n
ois
e em
issi
on
s d
uri
ng
co
nst
ruct
ion
act
ivit
ies,
m
ana
gem
ent
and
mit
igat
ion
m
easu
res
will
be
dev
elo
pe
d an
d
imp
lem
ente
d as
par
t o
f th
e C
EM
P
• T
he
curr
ent
Pro
ject
des
ign
an
d
imp
lem
enta
tio
n o
f in
du
stry
st
and
ard
man
ag
emen
t m
easu
res
enab
le n
ois
e le
vels
to
co
mp
ly w
ith
g
ove
rnm
ent
reg
ula
tio
ns
53
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
ere
is a
po
ssib
ility
th
at a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d Fa
un
a sp
eci
es c
ou
ld
occ
ur.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.6
Ap
pen
dix
U
1
Ter
rest
rial
Fau
na
Op
erat
ion
s L
eaks
& S
pill
s-
Veh
icle
R
efu
ellin
g,
Bre
akd
ow
ns
and
Pla
nt
Op
erat
ion
s
• L
oss
of
hab
itat
as
a re
sult
of
imp
act
to
ve
get
atio
n
• D
ire
ct im
pa
ct d
ue
to c
on
tact
wit
h
toxi
c su
bst
ance
s o
r ch
ang
es t
o
surf
ace
wat
er
qu
alit
y
43
Low
• R
isk
asse
ssm
ent
assu
mes
th
at
effe
ctiv
e st
ora
ge
and
man
ag
emen
t m
easu
res
will
be
in p
lace
.
• A
pp
rop
riat
e st
ora
ge
vess
els,
co
nta
inm
ent
faci
litie
s, t
ran
sfer
e
qu
ipm
ent
and
han
dlin
g m
eth
od
s
• C
aptu
re a
nd
trea
tmen
t o
f ru
no
ff
fro
m o
per
atio
nal
are
as a
nd
bu
nd
ed
ar
eas
• S
pill
res
po
nse
eq
uip
men
t,
emer
gen
cy r
esp
on
se t
rain
ing
and
sp
ill c
on
tin
gen
cy p
lan
nin
g
• R
emo
ve a
nd
rem
ed
iate
co
nta
min
ate
d so
il
• D
evel
op
and
imp
lem
ent
an
emp
loye
e en
viro
nm
enta
l ed
uca
tio
n
pro
gra
m/i
nd
uct
ion
54
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
u
nlik
ely
that
a
loca
l sh
ort
-ter
m
red
uct
ion
in t
he
abu
nd
ance
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d Fa
un
a sp
eci
es c
ou
ld
occ
ur.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.7
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Lig
ht
Em
issi
on
s -
Pla
nt
and
G
ener
al
Op
erat
ion
s,
Acc
om
mo
-d
atio
n V
illa
ge
• C
han
ges
to
b
ehav
iou
r o
f lo
cal
terr
estr
ial f
aun
a p
op
ula
tio
ns
• A
ttra
ctio
n t
o li
gh
t so
urc
es a
s a
resu
lt
of
inse
ct
acc
um
ula
tio
n
resu
ltin
g in
in
crea
sed
in
cid
ence
of
roa
d
kill
• L
on
g-t
erm
ch
ang
es t
o
terr
estr
ial f
aun
al
asse
mb
lag
e as
a
resu
lt o
f in
crea
sed
fo
od
sou
rce
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• L
igh
t in
ten
sity
will
be
limit
ed
to t
hat
n
ece
ssar
y fo
r th
e sa
fe o
per
atio
n o
f th
e p
lan
t
52
Low
• It
is a
ssu
me
d th
at
ligh
tin
g an
d lig
ht
spill
will
be
red
uce
d w
her
ever
p
ract
icab
le a
nd
sa
fe t
o d
o s
o in
o
rder
to
lim
it
imp
act
s to
te
rres
tria
l fau
na
fro
m li
gh
t em
issi
on
s.
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a lo
cal
sho
rt-t
erm
re
du
ctio
n in
th
e ab
un
dan
ce o
f a
Co
mm
on
wea
lth
or
WA
Lis
ted
Fau
na
spe
cies
co
uld
o
ccu
r.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.8
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 87
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Was
te
Han
dlin
g &
S
tora
ge
–
Pla
nt
and
G
ener
al
Op
erat
ion
s,
Acc
om
mo
da
-ti
on
Vill
ag
e
• A
ttra
ctio
n o
f te
rres
tria
l fau
na
to w
aste
res
ult
ing
in
incr
ease
d
inci
den
ce o
f ro
ad
ki
ll
• In
crea
ses
in f
eral
an
imal
po
pu
lati
on
(e
.g. c
ats,
wild
d
og
s)
• D
ire
ct im
pa
ct d
ue
to t
erre
stri
al
fau
na
be
com
ing
tr
app
ed
in w
aste
fa
cilit
ies
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
olid
was
te r
ece
pta
cles
will
hav
e co
vers
wh
ere
pra
ctic
able
. Te
mp
ora
ry c
on
tain
men
t fa
cilit
ies
will
be
avai
lab
le t
o s
tore
was
te
du
rin
g th
e ea
rly
con
stru
ctio
n
ph
ases
• W
aste
re
du
ctio
n m
easu
res
to b
e im
ple
men
ted
wh
ere
pra
ctic
able
• R
eg
ula
r d
isp
osa
l of
was
te t
o r
ed
uce
a
ccu
mu
lati
on
• M
ana
gem
ent
mea
sure
s w
ill b
e u
sed
to
lim
it f
aun
a a
cces
s to
sto
rmw
ater
p
on
ds
54
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
e m
ana
gem
ent
mea
sure
s d
escr
ibe
d fo
r w
aste
han
dlin
g
and
sto
rag
e ar
e u
nlik
ely
to le
ad
to
a lo
cal s
ho
rt-t
erm
in
crea
se in
th
e ab
un
dan
ce o
f an
in
tro
du
ced
anim
al.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.9
Ter
rest
rial
Fau
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Ph
ysic
al
Pre
sen
ce o
f In
fras
tru
ctu
re
(Su
rfa
ce W
ater
D
rain
ag
e)-
Co
nst
ruct
ion
o
f R
oa
d/
Cau
sew
ay,
Lo
cati
on
of
Pla
nt
Pa
d
• C
han
ges
to
su
rfa
ce w
ater
vo
lum
e an
d fl
ow
s re
sult
ing
in
imp
act
s to
fau
na
hab
itat
• Im
pa
cts
on
fau
na
and
fau
na
hab
itat
d
ue
to c
han
ges
in
veg
etat
ion
co
mm
un
ity
com
po
siti
on
an
d
the
dry
ing
ou
t o
r in
un
dat
ion
of
area
s
• Fa
un
a an
d in
p
arti
cula
r b
ird
s m
ay e
nte
r an
d
be
com
e en
trap
pe
d w
ith
in
sed
imen
tati
on
an
d o
ther
wat
er
colle
ctio
n p
on
ds
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• E
ng
ine
erin
g an
d d
esig
n s
olu
tio
ns
such
as
culv
erts
, se
dim
enta
tio
n
po
nd
s, a
silt
fen
ce a
rou
nd
the
con
stru
ctio
n a
rea
and
pla
cem
ent
of
rock
at
surf
ace
wat
er r
elea
se
po
ints
to
re
du
ce e
rosi
on
• Q
uar
anti
ne
pro
ced
ure
s w
ill b
e im
ple
men
ted
for
the
Pro
ject
• W
her
e p
ract
icab
le, p
on
ds
will
be
loca
ted
wit
hin
th
e p
erim
eter
fen
ce
and
hav
e fl
oat
s an
d/o
r fa
un
a e
gre
ss m
ats
to e
nab
le f
aun
a to
exi
t th
ese
wat
er b
od
ies
43
Low
• In
fras
tru
ctu
re w
ill
be
des
ign
ed
to
reta
in n
atu
ral
dra
ina
ge
feat
ure
s w
her
e p
ract
icab
le.
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at t
he
ph
ysic
al p
rese
nce
o
f in
fras
tru
ctu
re
cou
ld le
ad
to a
lo
cal l
on
g-t
erm
in
crea
se in
th
e ab
un
dan
ce o
f an
in
tro
du
ced
anim
al
and
cau
se a
loca
l lo
ng
-ter
m
red
uct
ion
of
a C
om
mo
nw
ealt
h o
r W
A L
iste
d Fa
un
a sp
eci
es.
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9
.6.5
.10
Wheatstone Project Executive Summary
88 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Ter
rest
rial
Fau
na
Ad
dit
ive
Eff
ect
s•
All
of
the
abo
ve-
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• A
ll o
f th
e ab
ove
43
Low
• S
ix t
hre
aten
ed
fa
un
a sp
eci
es, o
r si
gn
s o
f th
ese
spe
cies
, wer
e re
cord
ed
wit
hin
th
e st
ud
y ar
ea.
Ho
wev
er, t
hey
are
g
ener
ally
hig
hly
m
ob
ile a
nd
it is
ex
pe
cte
d th
at t
he
maj
ori
ty o
f in
div
idu
als
will
m
ove
aw
ay f
rom
th
e P
roje
ct a
rea
at t
he
com
men
cem
ent
of
the
con
stru
ctio
n
ph
ase
• N
o s
pe
cies
list
ed
u
nd
er t
he
EP
BC
A
ct (C
th)
are
likel
y to
be
affe
cte
d b
y th
e P
roje
ct
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
lo
cal l
on
g-t
erm
re
du
ctio
n o
f a
Co
mm
on
wea
lth
or
WA
Lis
ted
Fau
na
spe
cies
co
uld
o
ccu
r
Hig
h
Sev
eral
Exp
ert
inve
stig
atio
ns
/ st
ud
ies
Exc
elle
nt
surv
ey
dat
a
Lo
ng
-ter
m
mo
nit
ori
ng
re
sult
s av
aila
ble
No
t A
pp
licab
leS
ect
ion
9
.6.8
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 89
Su
bte
rra-
nea
n F
au
na
Co
nst
ruct
ion
V
eg
etat
ion
C
lear
ing
–
Sit
e P
rep
arat
ion
an
d S
ite
Acc
ess
• L
oss
of
hab
itat
• L
oca
lise
d ch
ang
es
to t
he
sub
terr
anea
n
fau
na
hab
itat
du
e to
ch
ang
es in
th
e h
ydro
log
y an
d
hyd
rog
eo
log
y o
f th
e ar
ea
53
Low
• Fo
r th
is r
isk
asse
ssm
ent
a co
nse
rvat
ive
app
roa
ch
assu
mes
a w
ors
t ca
se s
cen
ario
th
at
sub
terr
anea
n
fau
na
may
be
pre
sen
t
• P
ote
nti
al im
pa
cts
on
su
bte
rran
ean
fa
un
a, i
f p
rese
nt,
fr
om
ve
get
atio
n
clea
rin
g is
co
nsi
der
ed
low
• Im
ple
men
t ve
get
atio
n c
lear
ing
p
roce
ss
• D
evel
op
flo
ra a
nd
veg
etat
ion
m
ana
gem
ent
as p
art
of
the
CE
MP
• W
her
e p
ract
icab
le, v
eg
etat
ion
an
d
flo
ra w
ith
in t
he
Pro
ject
are
a w
ill b
e re
tain
ed
sho
uld
cle
arin
g n
ot
be
esse
nti
al
• W
her
e p
ract
icab
le r
ehab
ilita
te
dis
turb
ed
area
s u
po
n c
om
ple
tio
n o
f a
ctiv
itie
s
• R
etai
n n
atu
ral d
rain
ag
e w
her
e p
ract
icab
le
63
Ver
y
Low
• O
nly
tw
o s
pe
cies
o
f st
ygo
fau
na
hav
e b
een
loca
ted
w
ith
in t
he
Pro
ject
ar
ea, a
nd
bo
th
spe
cies
are
like
ly
to b
e w
ides
pre
ad
th
rou
gh
ou
t th
e P
ilbar
a. N
o
tro
glo
fau
na
hav
e b
een
loca
ted
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
sh
ort
-ter
m im
pa
ct
to s
ub
terr
anea
n
fau
na
hab
itat
co
uld
occ
ur,
al
tho
ug
h a
fu
ll re
cove
ry w
ou
ld b
e ex
pe
cte
d
Hig
h
Exc
elle
nt
Su
rvey
D
ata
No
t A
pp
licab
leS
ect
ion
9
.7.5
.1
Su
bte
rra-
nea
n F
au
na
Co
nst
ruct
ion
E
arth
wo
rks
–
Sit
e P
rep
arat
ion
• L
oss
of
hab
itat
d
ue
to c
om
pa
ctio
n3
3M
ediu
m•
For
this
ris
k as
sess
men
t a
con
serv
ativ
e ap
pro
ach
as
sum
es a
wo
rst
case
th
at r
are
sub
terr
anea
n
fau
na
may
be
pre
sen
t
• R
etai
n v
eg
etat
ion
wh
erev
er
pra
ctic
able
• B
un
ds
to p
reve
nt
tid
al in
un
dat
ion
• S
urf
ace
wat
er m
ana
gem
ent
such
as
dra
ins,
set
tlem
ent
po
nd
s et
c
• D
ust
su
pp
ress
ion
as
req
uir
ed
• Im
ple
men
t P
AS
S m
ana
gem
ent
mea
sure
s
63
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
sh
ort
-ter
m im
pa
ct
to s
ub
terr
anea
n
fau
na
hab
itat
co
uld
occ
ur.
If a
n
imp
act
do
es
occ
ur,
a f
ull
reco
very
is
exp
ect
ed
Hig
h
Exc
elle
nt
Su
rvey
D
ata
No
t A
pp
licab
leS
ect
ion
9
.7.5
.1
Wheatstone Project Executive Summary
90 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Su
bte
rra-
nea
n F
au
na
Co
nst
ruct
ion
D
red
ge
Mat
eria
l P
lace
men
t A
rea
- Dew
ater
ing
of
Dre
dg
e M
ater
ial
• D
ire
ct im
pa
cts
du
e to
ch
ang
es in
g
rou
nd
wat
er
qu
alit
y
• L
oca
lise
d
chan
ges
to
th
e su
bte
rran
ean
fa
un
a h
abit
at d
ue
to c
han
ges
in t
he
hyd
rolo
gy
and
h
ydro
ge
olo
gy
of
the
area
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• T
he
pla
cem
ent
area
has
be
en
sele
cte
d to
re
du
ce t
he
foo
tpri
nt
use
d
• D
isch
arg
e o
f d
eca
nt
wat
er d
uri
ng
th
e fi
rst
18 t
o 2
4 m
on
ths
will
be
pu
mp
ed
via
pip
elin
e to
a m
arin
e o
utf
all
• G
rou
nd
wat
er m
on
ito
rin
g b
ore
s w
ill
be
inst
alle
d to
det
ect
an
y al
tera
tio
n
of
gro
un
dw
ater
co
nd
itio
ns
that
m
ay in
dic
ate
a p
ote
nti
al r
isk
to t
he
Ash
bu
rto
n D
elta
sys
tem
63
Ver
y
Low
• O
nly
tw
o s
pe
cies
o
f st
ygo
fau
na
hav
e b
een
loca
ted
w
ith
in t
he
Pro
ject
ar
ea, a
nd
bo
th
spe
cies
are
like
ly
to b
e w
ides
pre
ad
th
rou
gh
ou
t th
e P
ilbar
a. N
o
tro
glo
fau
na
hav
e b
een
loca
ted
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
sh
ort
-ter
m im
pa
ct
to s
ub
terr
anea
n
fau
na
hab
itat
co
uld
occ
ur.
If a
n
imp
act
do
es
occ
ur,
a f
ull
reco
very
is
exp
ect
ed
Hig
h
Exc
elle
nt
Su
rvey
D
ata
No
t A
pp
licab
leS
ect
ion
9
.7.5
.2
Ap
pen
dix
U
1
Su
bte
rra-
nea
n F
au
na
Op
erat
ion
s O
per
atio
nal
L
eaks
& S
pill
s –
Veh
icle
R
efu
ellin
g an
d
Bre
akd
ow
ns,
P
lan
t O
per
atio
ns
• D
ire
ct im
pa
cts
du
e to
ch
ang
es in
g
rou
nd
wat
er
qu
alit
y
33
Mediu
m•
For
this
ris
k as
sess
men
t a
con
serv
ativ
e ap
pro
ach
as
sum
es a
wo
rst
case
th
at r
are
sub
terr
anea
n
fau
na
may
be
pre
sen
t.
• A
pp
rop
riat
e st
ora
ge
vess
els,
co
nta
inm
ent
faci
litie
s, t
ran
sfer
e
qu
ipm
ent
and
han
dlin
g m
eth
od
s
• C
aptu
re a
nd
trea
tmen
t o
f ru
n-o
ff
fro
m o
per
atio
nal
are
as, f
uel
far
ms
and
bu
nd
ed
area
s
• A
pp
rop
riat
e sp
ill r
esp
on
se
eq
uip
men
t, e
mer
gen
cy r
esp
on
se
trai
nin
g an
d sp
ill c
on
tin
gen
cy
pla
nn
ing
55
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d th
ere
is a
re
mo
te li
kelih
oo
d
that
a lo
cal l
oss
of
a sm
all p
rop
ort
ion
o
f su
bte
rran
ean
fa
un
a h
abit
at
cou
ld o
ccu
r
Hig
h
Exc
elle
nt
Su
rvey
D
ata
No
t A
pp
licab
leS
ect
ion
9
.7.5
.3
Su
bte
rra-
nea
n F
au
na
Co
nst
ruct
ion
an
d O
per
atio
ns
Phy
sica
l P
rese
nce
of
Infr
astr
uct
ure
, (S
urf
ace
Wat
er
Dra
inag
e)-
Co
nst
ruct
ion
o
f Ro
ad/
Cau
sew
ay,
Lo
cati
on
of
Pla
nt
Pad
• C
han
ges
to
su
rfa
ce w
ater
fl
ow
s re
sult
ing
in
imp
act
s to
su
bte
rran
ean
h
abit
at
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• R
etai
n n
atu
ral d
rain
ag
e w
her
e p
ract
icab
le
• Fa
cilit
ies
des
ign
ed
to li
mit
imp
act
s to
su
rfa
ce w
ater
sys
tem
s
• C
ulv
erts
are
inco
rpo
rate
d in
to t
he
hyd
rod
ynam
ic fl
ow
mo
del
fo
r d
rain
ag
e cr
oss
ing
s tr
aver
sed
by
the
roa
d an
d in
fras
tru
ctu
re c
orr
ido
r
63
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
p
oss
ible
th
at a
sh
ort
-ter
m im
pa
ct
to s
ub
terr
anea
n
fau
na
hab
itat
co
uld
occ
ur.
If a
n
imp
act
do
es
occ
ur,
a f
ull
reco
very
is
exp
ect
ed
Hig
h
Exc
elle
nt
Su
rvey
D
ata
No
t A
pp
licab
leS
ect
ion
9
.7.5
.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 91
Su
bte
rra-
nea
n F
au
na
Ad
dit
ive
Eff
ect
s•
All
of
the
abo
ve-
No
t id
enti
fie
d in
E
nvi
ron
men
tal
Sco
pin
g D
ocu
men
t
• A
ll o
f th
e ab
ove
54
Ver
y
Low
• T
her
e ar
e n
o
tro
glo
fau
na
wit
hin
th
e su
rvey
are
a
• O
nly
tw
o s
pe
cies
o
f st
ygo
fau
na
hav
e b
een
loca
ted
w
ith
in t
he
Pro
ject
ar
ea, a
nd
bo
th
spe
cies
are
like
ly
to b
e w
ides
pre
ad
th
rou
gh
ou
t th
e P
ilbar
a
• O
vera
ll, t
he
Pro
ject
is
con
sid
ere
d to
h
ave
an o
vera
ll ve
ry lo
w r
esid
ual
ri
sk o
f h
avin
g a
sig
nifi
can
t im
pa
ct
on
th
e su
bte
rran
ean
fa
un
a o
f th
e P
roje
ct a
rea
Hig
h
Exc
elle
nt
surv
ey
dat
a
No
t A
pp
licab
leS
ect
ion
9
.7.8
Air
Qu
ality
Co
nst
ruct
ion
D
ust
g
ener
atio
n
– ve
get
atio
n
clea
rin
g
• D
ust
dep
osi
tio
n
lea
din
g to
ve
get
atio
n lo
ss.
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• D
ust
co
ntr
ol m
easu
res
will
be
un
der
take
n d
uri
ng
site
cle
aran
ce.
Th
ese
con
tro
l mea
sure
s w
ill b
e im
ple
men
ted
on
a c
ase
by
case
b
asis
an
d w
ill b
e d
epen
den
t o
n t
he
act
ivit
y in
volv
ed
and
the
pre
vaili
ng
w
eath
er c
on
dit
ion
s
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
man
ag
e th
e g
ener
atio
n o
f d
ust
. A r
ang
e o
f m
ana
gem
ent
con
tro
ls a
nd
m
on
ito
rin
g p
roce
du
res
will
be
app
lied
as p
art
of
this
man
ag
emen
t p
lan
du
rin
g ke
y a
ctiv
itie
s at
th
e o
nsh
ore
dev
elo
pm
ent
area
52
Low
• T
he
site
p
rep
arat
ion
s in
volv
e si
te
clea
rin
g an
d th
e im
po
rt o
f m
ater
ial.
Th
e n
atu
re o
f th
e m
ater
ial i
s n
ot
yet
kno
wn
, ho
wev
er is
lik
ely
to r
eq
uir
e d
ust
man
ag
emen
t d
uri
ng
han
dlin
g
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
t a
smal
l in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Hig
h
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
92 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Mit
igati
on
s/M
an
agem
en
tR
esid
ual R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Air
Qu
ality
Co
nst
ruct
ion
an
d O
per
atio
ns
Du
st
gen
erat
ion
–
veh
icle
a
ctiv
ity
• D
ust
dep
osi
tio
n
lea
din
g to
ve
get
atio
n lo
ss
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
pe
ed
limit
s w
ill b
e u
sed
in t
he
con
stru
ctio
n a
rea
. Th
is w
ill a
ssis
t in
re
du
cin
g d
ust
gen
erat
ed
by
veh
icle
m
ove
men
ts
• E
arly
sea
ling
of
the
site
acc
ess
roa
ds
will
be
inve
stig
ate
d to
ass
ist
in m
inim
isin
g d
ust
gen
erat
ion
ca
use
d b
y ve
hic
le t
raffi
c
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
man
ag
e th
e g
ener
atio
n o
f d
ust
. A r
ang
e o
f m
ana
gem
ent
con
tro
ls a
nd
m
on
ito
rin
g p
roce
du
res
will
be
app
lied
as p
art
of
this
man
ag
emen
t p
lan
du
rin
g ke
y a
ctiv
itie
s at
th
e o
nsh
ore
dev
elo
pm
ent
area
64
Ver
y
Low
• T
he
site
p
rep
arat
ion
s in
volv
e si
te
clea
rin
g an
d th
e im
po
rt o
f m
ater
ial.
Th
e n
atu
re o
f th
e m
ater
ial i
s n
ot
yet
kno
wn
, ho
wev
er is
lik
ely
to r
eq
uir
e d
ust
man
ag
emen
t d
uri
ng
han
dlin
g
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
t a
smal
l in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Hig
h
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Ap
pen
dix
U
1
Air
Qu
ality
Co
nst
ruct
ion
an
d o
per
atio
ns
Du
st
gen
erat
ion
–
con
cret
e b
atch
ing
pla
nt
• D
ust
dep
osi
tio
n
lea
din
g to
ve
get
atio
n lo
ss
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• B
atch
ing
pla
nt
will
be
loca
ted
away
fr
om
sen
siti
ve r
ece
pto
rs, w
her
e p
ract
icab
le. S
tan
dar
d d
ust
co
ntr
ol
mea
sure
s fr
om
bat
chin
g p
lan
ts w
ill
be
imp
lem
ente
d
• S
pe
cifi
c d
ust
co
ntr
ol m
easu
res
may
b
e im
ple
men
ted
as p
art
of
the
stan
dar
d o
per
atio
n o
f th
e co
ncr
ete
bat
chin
g p
lan
t
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
man
ag
e th
e g
ener
atio
n o
f d
ust
. A r
ang
e o
f m
ana
gem
ent
con
tro
ls a
nd
m
on
ito
rin
g p
roce
du
res
will
be
app
lied
as p
art
of
this
man
ag
emen
t p
lan
du
rin
g ke
y a
ctiv
itie
s at
th
e o
nsh
ore
dev
elo
pm
ent
area
44
Low
• T
he
site
p
rep
arat
ion
s in
volv
e si
te
clea
rin
g an
d th
e im
po
rt o
f m
ater
ial.
Th
e n
atu
re o
f th
e m
ater
ial i
s n
ot
yet
kno
wn
, ho
wev
er is
lik
ely
to r
eq
uir
e d
ust
man
ag
emen
t d
uri
ng
han
dlin
g
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
tin
g an
in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 93
Air
Qu
ality
Co
nst
ruct
ion
D
ust
g
ener
atio
n
– tr
ansp
ort
of
mat
eria
l
• D
ust
dep
osi
tio
n
lea
din
g to
ve
get
atio
n lo
ss
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• S
pe
ed
limit
s w
ill b
e in
pla
ce in
co
nst
ruct
ion
are
as. A
ny
mat
eria
l w
ith
th
e p
ote
nti
al t
o g
ener
ate
win
db
low
n d
ust
du
rin
g
tran
spo
rtat
ion
to
an
d fr
om
th
e co
nst
ruct
ion
are
a w
ill b
e co
vere
d
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
man
ag
e th
e g
ener
atio
n o
f d
ust
. A r
ang
e o
f m
ana
gem
ent
con
tro
ls a
nd
m
on
ito
rin
g p
roce
du
res
will
be
app
lied
as p
art
of
this
man
ag
emen
t p
lan
du
rin
g ke
y a
ctiv
itie
s at
th
e o
nsh
ore
dev
elo
pm
ent
area
54
Ver
y
Low
• T
he
site
p
rep
arat
ion
s in
volv
e si
te
clea
rin
g an
d th
e im
po
rt o
f m
ater
ial.
Th
e n
atu
re o
f th
e m
ater
ial i
s n
ot
yet
kno
wn
, ho
wev
er is
lik
ely
to r
eq
uir
e d
ust
man
ag
emen
t d
uri
ng
han
dlin
g
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
t a
smal
l in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Hig
h
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Ap
pen
dix
U
1
Air
Qu
ality
Co
nst
ruct
ion
an
d O
per
atio
ns
Du
st
gen
erat
ion
–
win
d er
osi
on
o
f b
are
surf
ace
s
• D
ust
dep
osi
tio
n
lea
din
g to
ve
get
atio
n lo
ss
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• G
rou
nd
clea
ran
ce le
ad
ing
to t
he
exp
osu
re o
f b
are
surf
ace
s w
ill b
e av
oid
ed
, wh
ere
pra
ctic
able
• S
tock
pile
s, if
re
qu
ire
d, w
ill h
ave
app
rop
riat
e d
ust
co
ntr
ol m
easu
res.
S
tock
pile
s w
ill b
e lo
cate
d, w
her
ever
p
ract
icab
le, a
way
fro
m s
ensi
tive
re
cep
tors
• A
man
ag
emen
t p
lan
will
be
dev
elo
pe
d as
par
t o
f th
e C
EM
P w
ith
th
e ke
y o
bje
ctiv
e to
man
ag
e th
e g
ener
atio
n o
f d
ust
. A r
ang
e o
f m
ana
gem
ent
con
tro
ls a
nd
m
on
ito
rin
g p
roce
du
res
will
be
app
lied
as p
art
of
this
man
ag
emen
t p
lan
du
rin
g ke
y a
ctiv
itie
s at
th
e o
nsh
ore
dev
elo
pm
ent
area
54
Ver
y
Low
• T
he
site
p
rep
arat
ion
s in
volv
e si
te
clea
rin
g an
d th
e im
po
rt o
f m
ater
ial.
Th
e n
atu
re o
f th
e m
ater
ial i
s n
ot
yet
kno
wn
, ho
wev
er is
lik
ely
to r
eq
uir
e d
ust
man
ag
emen
t d
uri
ng
han
dlin
g
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
t a
smal
l in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Hig
h
Lo
ng
term
m
on
ito
rin
g
resu
lts
avai
lab
le
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
94 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Mit
igati
on
s/M
an
agem
en
tR
esid
ual R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Air
Qu
alit
yC
on
stru
ctio
nO
ther
at
mo
sph
eric
em
issi
on
s
• R
ed
uct
ion
of
air
qu
alit
y le
ad
ing
to
hu
man
hea
lth
an
d
envi
ron
men
tal
imp
act
s
51
Mediu
m•
Ran
kin
g
con
sid
ere
d
po
ten
tial
co
mm
un
ity
con
cern
s, a
nd
fu
rth
er d
etai
led
m
od
ellin
g w
ill b
e ta
ken
• A
ll e
qu
ipm
ent
will
be
wel
l m
ain
tain
ed
and
com
ply
wit
h
Au
stra
lian
Sta
nd
ard
s an
d
Re
gu
lati
on
s
• C
lear
ing
act
ivit
ies
will
be
red
uce
d,
wh
ere
pra
ctic
able
65
Ver
y
Low
• O
ther
at
mo
sph
eric
em
issi
on
s d
uri
ng
th
e co
nst
ruct
ion
p
has
e ar
e lik
ely
to
be
asso
ciat
ed
wit
h
mar
ine
vess
el
eng
ines
, a
dd
itio
nal
air
line
flig
hts
to
an
d fr
om
O
nsl
ow
an
d fr
om
ve
hic
les
and
e
qu
ipm
ent
req
uir
ed
to
sup
po
rt
con
stru
ctio
n
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
ere
is o
nly
a r
emo
te
chan
ce t
hat
th
ere
will
be
mea
sura
ble
ai
r q
ual
ity
imp
act
s as
soci
ate
d w
ith
o
ther
atm
osp
her
ic
emis
sio
ns
gen
erat
ed
du
rin
g
con
stru
ctio
n
Low
No
mo
del
ling
co
nd
uct
ed
No
t A
pp
licab
leS
ect
ion
9.8
.5.1
Air
Qu
alit
yO
per
atio
ns
Air
Em
issi
on
s•
Re
du
ced
air
qu
alit
y as
a r
esu
lt
of
emis
sio
n o
f p
ollu
tan
ts f
rom
th
e fa
cilit
y d
uri
ng
p
roce
ssin
g
lea
din
g to
imp
act
s o
n h
um
an h
ealt
h
and
the
envi
ron
men
t
51
Mediu
m•
Ran
kin
g
con
sid
ere
d
po
ten
tial
co
mm
un
ity
con
cern
s, a
nd
fu
rth
er d
etai
led
m
od
ellin
g w
ill b
e ta
ken
• M
ana
gem
ent
of
the
pro
cess
ing
o
per
atio
n t
o r
ed
uce
po
lluti
ng
em
issi
on
s as
low
as
reas
on
ably
p
ract
icab
le
• R
eg
ula
r m
ain
ten
ance
of
eq
uip
men
t fo
r g
oo
d p
erfo
rman
ce a
nd
red
uce
d
emis
sio
ns
• P
lan
nin
g o
f n
on
-ro
uti
ne
(pla
nn
ed
) m
ain
ten
ance
sh
utd
ow
ns
to r
ed
uce
em
issi
on
s, w
her
e p
ract
icab
le
• O
ng
oin
g m
on
ito
rin
g o
f em
issi
on
s fr
om
th
e fa
cilit
y to
det
erm
ine
the
leve
l of
po
lluti
ng
emis
sio
ns
• Im
ple
men
tati
on
of
rem
ed
ial a
ctio
n
sho
uld
em
issi
on
leve
ls e
xce
ed
a
gre
ed
leve
ls
54
Ver
y
Low
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
th
ere
is o
nly
a r
emo
te
chan
ce t
hat
th
ere
will
be
mea
sura
ble
ai
r q
ual
ity
imp
act
s fr
om
air
em
issi
on
s as
soci
ate
d w
ith
th
e o
per
atio
ns
• T
he
resi
du
al r
isk
ran
kin
g h
as b
een
o
bta
ine
d as
it is
lik
ely
that
a
sho
rt-t
erm
imp
act
to
gro
un
d-l
evel
co
nce
ntr
atio
ns
at
iden
tifi
ed
se
nsi
tive
re
cep
tors
re
pre
sen
t a
smal
l in
crea
se o
ver
the
bas
elin
e co
nd
itio
ns
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9.8
.5.2
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 95
Air
Qu
alit
yA
dd
itiv
e E
ffe
cts
• A
ll o
f th
e ab
ove
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• A
ll o
f th
e ab
ove
52
Low
• T
he
ad
dit
ive
risk
ra
nki
ng
has
be
en
ob
tain
ed
as it
is
likel
y th
at a
sh
ort
-ter
m im
pa
ct
to g
rou
nd
-lev
el
con
cen
trat
ion
s at
id
enti
fie
d
sen
siti
ve
rece
pto
rs
rep
rese
nt
a sm
all
incr
ease
ove
r th
e b
asel
ine
con
dit
ion
s; a
nd
th
ere
is o
nly
a
rem
ote
ch
ance
th
at t
her
e w
ill b
e m
easu
rab
le a
ir
qu
alit
y im
pa
cts
asso
ciat
ed
wit
h
the
Pro
ject
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
9
.8.8
Wheatstone Project Executive Summary
96 | Chevron Australia Pty Ltd
Table
1.7
: Soci
al R
isk
Ass
essm
ent
Su
mm
ary
For
det
ails
on
th
e ri
sk r
anki
ng
pro
ced
ure
, in
clu
din
g co
nse
qu
ence
an
d lik
elih
oo
d d
efin
itio
ns
spec
ific
to e
ach
fac
tor,
ref
er t
o C
hap
ter
7, Im
pac
t A
sses
smen
t M
eth
od
olo
gy
and
C
hap
ter
10, S
oci
al R
isk
Ass
essm
ent
and
Man
agem
ent.
No
te t
hat
“C
” re
fers
to
Co
nse
qu
ence
an
d “L
” re
fers
to
Lik
elih
oo
d.
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Rec
reati
on
al
Fis
hin
gC
on
stru
ctio
nD
red
gin
g•
Re
du
ced
re
crea
tio
nal
fi
shin
g
op
po
rtu
nit
y d
ue
to
de
crea
sed
fish
st
ock
s as
a
con
seq
uen
ce o
f cl
eari
ng
crit
ical
h
abit
ats
33
Mediu
m•
Lev
el o
f im
pa
ct
to b
e d
eter
min
ed
th
rou
gh
det
aile
d
con
sult
atio
n w
ith
fi
sher
y au
tho
riti
es a
nd
d
epen
den
cy
anal
ysis
of
loca
l fi
sher
s in
p
ote
nti
al
excl
usi
on
zo
nes
• D
red
gin
g im
pa
cts
will
be
man
ag
ed
th
rou
gh
a D
SD
MP
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
53
Low
• C
riti
cal h
abit
ats
will
re
cove
r fr
om
d
red
gin
g im
pa
cts
• N
o h
abit
ats
in t
he
area
are
kn
ow
n t
o
be
crit
ical
fo
r th
e o
ng
oin
g su
cces
s o
f m
arin
e fa
un
a p
op
ula
tio
ns
• Tu
rbid
ity
imp
act
s o
n w
ater
qu
alit
y d
uri
ng
dre
dg
ing
o
per
atio
ns
are
con
sid
ere
d
un
likel
y to
si
gn
ifica
ntl
y af
fect
fi
sher
ies
in t
he
area
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea
Rea
son
able
Mo
del
ling
co
nd
uct
ed
and
su
rvey
dat
a av
aila
ble
No
t A
pp
licab
leS
ect
ion
10.4
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 97
Rec
reati
on
al
Fis
hin
gC
on
stru
ctio
nF
ish
ing
by
Pro
ject
w
ork
forc
e
• R
ed
uce
d ca
tch
d
ue
to fi
shin
g b
y P
roje
ct w
ork
forc
e in
loca
l wat
ers
and
o
ffsh
ore
isla
nd
s
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• B
oat
s an
d re
crea
tio
nal
veh
icle
s w
ill
no
t b
e p
erm
itte
d w
ith
in t
he
wo
rkfo
rce
acc
om
mo
dat
ion
vill
ag
e o
r th
e a
cces
s ro
ad
fro
m t
he
On
slo
w
Ro
ad
• B
ehav
iou
r st
and
ard
s to
be
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in
a R
ecr
eati
on
Co
de
of
Co
nd
uct
. C
on
stru
ctio
n w
ork
ers
will
be
aske
d
to s
ign
th
e C
od
e o
f C
on
du
ct
• A
co
mm
un
ity
fee
db
ack
pro
ced
ure
w
ill b
e es
tab
lish
ed
wh
ereb
y an
y co
mp
lain
ts f
rom
th
e co
mm
un
ity
abo
ut
un
acc
epta
ble
beh
avio
ur
fro
m
con
stru
ctio
n w
ork
ers
will
be
inve
stig
ate
d an
d w
her
e n
ece
ssar
y ap
pro
pri
ate
act
ion
tak
en
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
33
Mediu
m•
Targ
et fi
sh s
pe
cies
ar
e w
ell
rep
rese
nte
d in
th
e lo
cal a
nd
reg
ion
al
area
, ho
wev
er t
he
low
pro
du
ctiv
ity
of
oce
anic
wat
ers
in
the
Pilb
ara
mea
ns
it is
po
ssib
le
(alt
ho
ug
h u
nlik
ely)
th
at fi
sh
po
pu
lati
on
s co
uld
b
e o
verfi
she
d.
Th
eref
ore
, C
hev
ron
has
p
rop
ose
d a
nu
mb
er o
f m
ana
gem
ent
mea
sure
s to
re
du
ce t
he
imp
act
o
f fi
shin
g b
y th
e P
roje
ct w
ork
forc
e in
loca
l wat
ers
and
n
ears
ho
re is
lan
ds
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
acc
ess
rest
rict
ion
s cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Wheatstone Project Executive Summary
98 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Rec
reati
on
al
Fis
hin
gO
per
atio
ns
Ph
ysic
al
Pre
sen
ce o
f In
fras
tru
ctu
re
• R
ed
uce
d
recr
eati
on
al
fish
ing
o
pp
ort
un
ity
as a
re
sult
of
rest
rict
ed
a
cces
s
33
Mediu
m•
Lev
el o
f im
pa
ct
to b
e d
eter
min
ed
th
rou
gh
det
aile
d
con
sult
atio
n w
ith
ke
y st
akeh
old
ers.
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
33
Mediu
m•
It is
like
ly t
hat
a
cces
s to
Ho
ole
y C
reek
by
lan
d w
ill
no
lon
ger
be
po
ssib
le d
ue
to
safe
ty e
xclu
sio
n
zon
es
• S
om
e re
stri
cte
d
acc
ess
du
e to
ex
clu
sio
n z
on
es is
re
qu
ire
d fo
r p
ub
lic
safe
ty
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
acc
ess
rest
rict
ion
s cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Rec
reati
on
al
Fis
hin
gO
per
atio
ns
Fis
hin
g b
y P
roje
ct
wo
rkfo
rce
• R
ed
uce
d ca
tch
d
ue
to fi
shin
g b
y P
roje
ct w
ork
forc
e in
loca
l wat
ers
and
o
ffsh
ore
isla
nd
s
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
33
Mediu
m•
Po
ten
tial
imp
act
s o
n r
ecr
eati
on
al
fish
ing
by
the
Pro
ject
wo
rkfo
rce
will
be
sig
nifi
can
tly
less
du
rin
g th
e o
per
atio
ns
ph
ase
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea, h
ow
ever
th
e lo
w p
rod
uct
ivit
y o
f o
cean
ic w
ater
s in
th
e P
ilbar
a m
ean
s it
is p
oss
ible
(a
lth
ou
gh
un
likel
y)
that
fish
p
op
ula
tio
ns
cou
ld
be
ove
rfish
ed
. T
her
efo
re,
Ch
evro
n h
as
pro
po
sed
a n
um
ber
of
man
ag
emen
t m
easu
res
to
red
uce
th
e im
pa
ct
of
fish
ing
by
the
Pro
ject
wo
rkfo
rce
in lo
cal w
ater
s an
d
nea
rsh
ore
isla
nd
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
acc
ess
rest
rict
ion
s cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 99
Rec
reati
on
al
Fis
hin
gA
dd
itiv
e E
ffe
cts
• R
ed
uce
d ca
tch
d
ue
to P
roje
ct-
rela
ted
eco
log
ical
ch
ang
es, e
xclu
sio
n
zon
es, r
estr
icte
d
acc
ess,
ves
sel
mo
vem
ents
or
fish
ing
by
Pro
ject
w
ork
forc
e
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• B
oat
s an
d re
crea
tio
nal
veh
icle
s
will
no
t b
e p
erm
itte
d w
ith
in t
he
wo
rkfo
rce
acc
om
mo
dat
ion
vill
ag
e o
r th
e a
cces
s ro
ad
fro
m t
he
On
slo
w
Ro
ad
• B
ehav
iou
r st
and
ard
s to
be
exp
ect
ed
fro
m a
ll co
nst
ruct
ion
w
ork
ers
will
be
clea
rly
arti
cula
ted
in
a R
ecr
eati
on
Co
de
of
Co
nd
uct
. C
on
stru
ctio
n w
ork
ers
will
be
aske
d
to s
ign
th
e C
od
e o
f C
on
du
ct
• A
co
mm
un
ity
fee
db
ack
pro
ced
ure
w
ill b
e es
tab
lish
ed
wh
ereb
y an
y co
mp
lain
ts f
rom
th
e co
mm
un
ity
abo
ut
un
acc
epta
ble
beh
avio
ur
fro
m
con
stru
ctio
n w
ork
ers
will
be
inve
stig
ate
d an
d w
her
e n
ece
ssar
y ap
pro
pri
ate
act
ion
tak
en
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
• D
red
gin
g im
pa
cts
will
be
man
ag
ed
th
rou
gh
a D
SD
MP
33
Mediu
m•
Dre
dg
ing
imp
act
s w
ill b
e ep
iso
dic
an
d af
fect
s w
ill b
e lim
ite
d to
th
e ar
ea
of
dre
dg
ing
• E
xclu
sio
n z
on
es
will
on
ly a
ffe
ct a
sm
all p
rop
ort
ion
o
f fi
shin
g ar
eas
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea, h
ow
ever
th
e lo
w p
rod
uct
ivit
y o
f o
cean
ic w
ater
s in
th
e P
ilbar
a m
ean
s it
is p
oss
ible
(a
lth
ou
gh
un
likel
y)
that
fish
p
op
ula
tio
ns
cou
ld
be
ove
rfish
ed
. T
her
efo
re,
Ch
evro
n h
as
pro
po
sed
a n
um
ber
of
man
ag
emen
t m
easu
res
to
red
uce
th
e im
pa
ct
of
fish
ing
by
the
Pro
ject
wo
rkfo
rce
in lo
cal w
ater
s an
d
nea
rsh
ore
isla
nd
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
acc
ess
rest
rict
ion
s cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
100 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Com
mer
cial
Fis
hin
g &
P
earl
ing
Co
nst
ruct
ion
D
red
gin
g•
Re
du
ced
co
mm
erci
al c
atch
d
ue
to:
•
De
crea
sed
fish
st
ock
s as
a
con
seq
uen
ce o
f cl
eari
ng
crit
ical
h
abit
ats,
in
crea
sed
tu
rbid
ity,
se
dim
enta
tio
n
and
ligh
t at
ten
uat
ion
or
oth
er e
colo
gic
al
chan
ges
th
at
resu
lt f
rom
d
red
gin
g
•
Tem
po
rary
ex
clu
sio
n z
on
es
du
rin
g d
red
gin
g
or
incr
ease
d
vess
el
mo
vem
ents
•
De
crea
sed
fish
st
ock
s as
a
con
seq
uen
ce o
f cl
eari
ng
crit
ical
h
abit
ats
33
Mediu
m•
Lev
el o
f im
pa
ct
to b
e d
eter
min
ed
th
rou
gh
det
aile
d
con
sult
atio
n w
ith
fi
sher
y au
tho
riti
es a
nd
d
epen
den
cy
anal
ysis
of
loca
l fi
sher
s in
p
ote
nti
al
excl
usi
on
zo
nes
• D
red
gin
g im
pa
cts
will
be
man
ag
ed
th
rou
gh
a D
SD
MP.
• C
hev
ron
will
cre
ate
a co
mm
erci
al
fish
ing
ind
ust
ry li
aiso
n r
ole
to
liai
se
bet
we
en C
hev
ron
an
d co
mm
erci
al
fish
ers
33
Mediu
m•
Dre
dg
ing
imp
act
s w
ill b
e ep
iso
dic
an
d im
pa
cts
will
b
e lim
ite
d to
th
e ar
ea o
f d
red
gin
g
• E
xclu
sio
n z
on
es
du
rin
g d
red
gin
g
will
be
tem
po
rary
an
d im
pa
cts
will
o
nly
aff
ect
a s
mal
l p
rop
ort
ion
of
fish
ing
area
s
• C
riti
cal h
abit
ats
will
re
cove
r fr
om
d
red
gin
g im
pa
cts
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea
• N
on
e o
f th
e co
ral-
ob
ligat
e fi
sh
spe
cies
in t
he
area
ar
e kn
ow
n t
o b
e en
dem
ic t
o t
he
Pro
ject
are
a an
d
affe
cte
d
po
pu
lati
on
s w
ill
reco
ver
thro
ug
h
recr
uit
men
t fr
om
su
rro
un
din
g ar
eas
on
ce t
he
hab
itat
h
as r
eco
vere
d
Rea
son
able
Mo
del
ling
co
nd
uct
ed
and
su
rvey
dat
a av
aila
ble
No
t A
pp
licab
leS
ect
ion
10.4
Ap
pen
dix
S
1
Com
mer
cial
Fis
hin
g &
P
earl
ing
Co
nst
ruct
ion
Co
nst
ruct
ion
A
ctiv
itie
s•
Re
du
ced
catc
h
du
e to
res
tric
ted
a
cces
s (e
xclu
sio
n
zon
es)
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
cre
ate
a co
mm
erci
al
fish
ing
ind
ust
ry li
aiso
n r
ole
to
liai
se
bet
we
en C
hev
ron
an
d co
mm
erci
al
fish
ers
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
44
Low
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea a
nd
fish
ing
a
ctiv
itie
s ca
n
relo
cate
to
oth
er
sect
ion
s o
f th
e fi
sher
ies
• E
xclu
sio
n z
on
es
will
on
ly a
ffe
ct a
sm
all p
rop
ort
ion
o
f fi
shin
g ar
eas
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Imp
ort
ance
/p
rese
nce
of
nu
rser
ies,
rel
ate
d
chan
ges
to
p
rod
uct
ivit
y o
f fi
sher
ies
and
full
foo
tpri
nt
of
dev
elo
pm
ent
is
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 101
Com
mer
cial
Fis
hin
g &
P
earl
ing
Co
nst
ruct
ion
Fis
hin
g b
y P
roje
ct
Co
nst
ruct
ion
W
ork
forc
e
• R
ed
uce
d ca
tch
d
ue
to fi
shin
g b
y co
nst
ruct
ion
w
ork
ers
in lo
cal
wat
ers
and
n
ears
ho
re is
lan
ds
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
43
Low
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea, h
ow
ever
th
e lo
w p
rod
uct
ivit
y o
f o
cean
ic w
ater
s in
th
e P
ilbar
a m
ean
s it
is p
oss
ible
(a
lth
ou
gh
un
likel
y)
that
fish
p
op
ula
tio
ns
cou
ld
be
ove
rfish
ed
. T
her
efo
re,
Ch
evro
n h
as
pro
po
sed
a n
um
ber
of
man
ag
emen
t m
easu
res
to
red
uce
th
e im
pa
ct
of
fish
ing
by
the
Pro
ject
wo
rkfo
rce
in lo
cal w
ater
s an
d
nea
rsh
ore
isla
nd
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
acc
ess
rest
rict
ion
s cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.4
Com
mer
cial
Fis
hin
g &
P
earl
ing
Op
erat
ion
sP
hys
ical
P
rese
nce
of
Infr
astr
uct
ure
• R
ed
uce
d
com
mer
cial
cat
ch
as a
res
ult
of
rest
rict
ed
acc
ess
• R
ed
uce
d
com
mer
cial
cat
ch
du
e to
per
man
ent
dam
ag
e to
cri
tica
l h
abit
ats
affe
ctin
g
sto
cks
of
avai
lab
le
for
fish
ers
33
Mediu
m•
Lev
el o
f im
pa
ct
to b
e d
eter
min
ed
th
rou
gh
det
aile
d
con
sult
atio
n w
ith
ke
y st
akeh
old
ers
• C
hev
ron
will
cre
ate
a co
mm
erci
al
fish
ing
ind
ust
ry li
aiso
n r
ole
to
liai
se
bet
we
en C
hev
ron
an
d co
mm
erci
al
fish
ers
44
Low
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea
• E
xclu
sio
n z
on
es
will
on
ly a
ffe
ct a
sm
all p
rop
ort
ion
o
f fi
shin
g ar
eas
• In
form
atio
n o
n
sust
ain
able
fish
ing
p
ract
ices
will
be
incl
ud
ed
in t
he
ind
uct
ion
of
the
con
stru
ctio
n
wo
rkfo
rce
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Imp
ort
ance
/p
rese
nce
of
nu
rser
ies,
re
late
d ch
ang
es
to p
rod
uct
ivit
y o
f fi
sher
ies
and
fu
ll fo
otp
rin
t o
f d
evel
op
men
t is
u
nce
rtai
n
No
t A
pp
licab
leS
ect
ion
10.4
Wheatstone Project Executive Summary
102 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Com
mer
cial
Fis
hin
g &
P
earl
ing
Op
erat
ion
sO
per
atio
nal
A
ctiv
itie
s in
clu
din
g
Mai
nte
nan
ce
Dre
dg
ing
• R
ed
uce
d ca
tch
d
ue
to fi
shin
g b
y o
per
atio
nal
w
ork
ers
in lo
cal
wat
ers
and
n
ears
ho
re is
lan
ds
• C
han
ge
d
com
mu
nit
y id
enti
ty if
co
mm
erci
al
fish
ing
ind
ust
ry
de
clin
es in
On
slo
w
• R
ed
uce
d
com
mer
cial
cat
ch
du
e to
de
crea
sed
fi
sh s
tock
s as
a
con
seq
uen
ce o
f cl
eari
ng
crit
ical
h
abit
ats
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
cre
ate
a co
mm
erci
al
fish
ing
ind
ust
ry li
aiso
n r
ole
to
liai
se
bet
we
en C
hev
ron
an
d co
mm
erci
al
fish
ers
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
• D
red
gin
g im
pa
cts
will
be
man
ag
ed
th
rou
gh
a D
SD
MP
• T
her
e w
ill b
e a
role
wit
hin
Ch
evro
n
wh
o w
ill li
aise
wit
h c
om
mer
cial
fi
sher
s o
n d
red
gin
g an
d o
ther
m
arin
e co
nst
ruct
ion
act
ivit
ies
43
Low
• In
form
atio
n o
n
sust
ain
able
fish
ing
p
ract
ices
will
be
incl
ud
ed
in t
he
ind
uct
ion
of
the
op
erat
ion
al
wo
rkfo
rce
• C
hev
ron
will
m
on
ito
r ke
y co
mm
un
ity
soci
al
ind
icat
ors
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Mo
del
ling
co
nd
uct
ed
and
su
rvey
dat
a av
aila
ble
No
t A
pp
licab
leS
ect
ion
10.4
Ap
pen
dix
S
1
Com
mer
cial
Fis
hin
g &
P
earl
ing
Ad
dit
ive
Eff
ect
s •
Re
du
ced
catc
h
du
e to
Pro
ject
-re
late
d e
colo
gic
al
chan
ges
, exc
lusi
on
zo
nes
, res
tric
ted
a
cces
s, v
esse
l m
ove
men
ts o
r fi
shin
g b
y P
roje
ct
wo
rkfo
rce
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
cre
ate
a co
mm
erci
al
fish
ing
ind
ust
ry li
aiso
n r
ole
to
liai
se
bet
we
en C
hev
ron
an
d co
mm
erci
al
fish
ers
• D
red
gin
g im
pa
cts
will
be
man
ag
ed
th
rou
gh
a D
SD
MP
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
Fis
her
ies
to r
ed
uce
p
ote
nti
al r
isks
to
th
e ex
isti
ng
re
crea
tio
nal
fish
ery
• C
hev
ron
will
wo
rk w
ith
th
e W
A
Dep
artm
ent
of
En
viro
nm
ent
and
C
on
serv
atio
n t
o r
ed
uce
po
ten
tial
ri
sks
fro
m e
xces
sive
re
crea
tio
nal
u
se o
f th
e is
lan
ds
wit
hin
a 2
5km
ra
diu
s o
f O
nsl
ow
• Fo
r sa
fety
rea
son
s, r
ecr
eati
on
al
act
ivit
ies
such
as
fish
ing
will
no
t b
e p
erm
itte
d w
ith
in t
he
nea
rsh
ore
ex
clu
sio
n z
on
es (
for
exam
ple
, MO
F an
d P
LF
)
33
Mediu
m•
Dre
dg
ing
imp
act
s w
ill b
e ep
iso
dic
an
d af
fect
s w
ill b
e lim
ite
d to
th
e ar
ea
of
dre
dg
ing
• E
xclu
sio
n z
on
es
will
on
ly a
ffe
ct a
sm
all p
rop
ort
ion
o
f fi
shin
g ar
eas
• Ta
rget
fish
sp
eci
es
are
wel
l re
pre
sen
ted
in t
he
loca
l an
d re
gio
nal
ar
ea
• In
form
atio
n o
n
sust
ain
able
fish
ing
p
ract
ices
will
be
incl
ud
ed
in t
he
ind
uct
ion
of
the
con
stru
ctio
n a
nd
o
per
atio
nal
w
ork
forc
es
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
10.4
Ap
pen
dix
S
1
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 103
Rec
reati
on
Co
nst
ruct
ion
D
red
gin
g•
Re
du
ced
mar
ine
recr
eati
on
al
act
ivit
y d
ue
to
excl
usi
on
zo
nes
or
red
uce
d vi
sib
ility
as
a r
esu
lt o
f In
crea
sed
silt
in
cre
eks,
wat
erw
ays
and
sea
• Te
mp
ora
ry
red
uct
ion
of
mar
ine
recr
eati
on
al
act
ivit
ies
du
e to
te
mp
ora
ry
excl
usi
on
zo
nes
or
red
uce
d vi
sib
ility
as
a r
esu
lt o
f In
crea
sed
silt
in
cre
eks,
wat
erw
ays
and
sea
du
rin
g
mai
nte
nan
ce
dre
dg
ing
52
Low
• L
evel
of
imp
act
to
be
det
erm
ine
d
thro
ug
h
con
sult
atio
n w
ith
re
crea
tio
nal
u
sers
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
51
Mediu
m•
So
cial
inve
stm
ent
fun
din
g w
ill b
e av
aila
ble
fo
r co
mm
un
ity
pro
ject
s
Rea
son
able
Mo
del
ling
co
nd
uct
ed
.
Ext
ent
of
excl
usi
on
zo
nes
cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.5
Rec
reati
on
Co
nst
ruct
ion
Ho
usi
ng
of
Co
nst
ruct
ion
W
ork
forc
e
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
use
of
acc
om
mo
dat
ion
b
y co
nst
ruct
ion
w
ork
forc
e
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• P
roje
ct im
pa
cts
on
to
uri
sm
acc
om
mo
dat
ion
will
be
red
uce
d
thro
ug
h p
rovi
sio
n o
f a
cco
mm
od
atio
n f
or
all c
on
stru
ctio
n
wo
rker
s as
soci
ate
d w
ith
th
e P
roje
ct
52
Low
• A
ll w
ork
ers
asso
ciat
ed
wit
h
the
Pro
ject
will
be
ho
use
d at
th
e a
cco
mm
od
atio
n
villa
ge.
Th
ere
may
b
e so
me
sho
rt-t
erm
im
pa
cts
wh
ile t
he
acc
om
mo
dat
ion
vi
llag
e is
bei
ng
co
nst
ruct
ed
.
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
10.5
Rec
reati
on
Co
nst
ruct
ion
Ho
usi
ng
of
Res
iden
ts w
ho
R
elo
cate
du
e to
Eco
no
mic
O
pp
ort
un
itie
s
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
po
pu
lati
on
g
row
th in
du
ced
by
the
Pro
ject
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
use
of
acc
om
mo
dat
ion
b
y w
ork
forc
e o
f in
fras
tru
ctu
re
and
/or
con
stru
ctio
n
pro
ject
s in
du
ced
b
y th
e P
roje
ct
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
ana
gem
ent
of
po
pu
lati
on
gro
wth
is
bey
on
d C
hev
ron
’s c
on
tro
l an
d
ther
efo
re is
no
t w
ith
in C
hev
ron
’s
sco
pe
of
resp
on
sib
ility
.
• M
ana
gem
ent
of
oth
er p
roje
cts’
w
ork
forc
es is
no
t w
ith
in C
hev
ron
’s
con
tro
l or
sco
pe
of
resp
on
sib
ility
33
Mediu
m•
All
wo
rker
s as
soci
ate
d w
ith
th
e P
roje
ct w
ill b
e h
ou
sed
at t
he
acc
om
mo
dat
ion
vi
llag
e. T
her
e m
ay
be
som
e sh
ort
-ter
m
imp
act
s w
hile
th
e a
cco
mm
od
atio
n
villa
ge
is b
ein
g
con
stru
cte
d.
Low
No
mo
del
ling
co
nd
uct
ed
and
av
aila
ble
in
form
atio
n is
in
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
10.5
Wheatstone Project Executive Summary
104 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Rec
reati
on
Op
erat
ion
sH
ou
sin
g o
f R
esid
ents
wh
o
Rel
oca
te d
ue
to E
con
om
ic
Op
po
rtu
nit
ies
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
po
pu
lati
on
g
row
th in
du
ced
by
the
Pro
ject
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
use
of
acc
om
mo
dat
ion
b
y w
ork
forc
e o
f in
fras
tru
ctu
re
and
/or
con
stru
ctio
n
pro
ject
s in
du
ced
b
y th
e P
roje
ct
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• M
ana
gem
ent
of
po
pu
lati
on
gro
wth
is
bey
on
d C
hev
ron
’s c
on
tro
l an
d
ther
efo
re is
no
t w
ith
in C
hev
ron
’s
sco
pe
of
resp
on
sib
ility
• M
ana
gem
ent
of
oth
er p
roje
cts’
w
ork
forc
es is
no
t w
ith
in C
hev
ron
’s
con
tro
l or
sco
pe
of
resp
on
sib
ility
33
Mediu
m•
Th
e p
riva
te s
ect
or
will
res
po
nd
to
dem
and
for
tem
po
rary
an
d
per
man
ent
ho
usi
ng
• G
ove
rnm
ent
will
re
leas
e la
nd
for
new
ho
usi
ng
co
nst
ruct
ion
Low
No
mo
del
ling
co
nd
uct
ed
. an
d
avai
lab
le
info
rmat
ion
is
ina
de
qu
ate
No
t A
pp
licab
leS
ect
ion
10.5
Rec
reati
on
Op
erat
ion
sP
hys
ical
P
rese
nce
of
Infr
astr
uct
ure
• R
ed
uce
d a
cces
s to
re
crea
tio
n a
reas
d
ue
to e
xclu
sio
n
zon
es, l
ead
ing
to
loss
of
recr
eati
on
al v
alu
e
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
51
Mediu
m•
So
cial
inve
stm
ent
fun
din
g w
ill b
e av
aila
ble
fo
r co
mm
un
ity
pro
ject
s
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
Ext
ent
of
excl
usi
on
zo
nes
cu
rren
tly
un
cert
ain
No
t A
pp
licab
leS
ect
ion
10.5
Rec
reati
on
Op
erat
ion
sO
per
atio
nal
A
ctiv
itie
s•
Re
du
ced
acc
ess
to
tem
po
rary
to
uri
sm
acc
om
mo
dat
ion
d
ue
to u
se o
f a
cco
mm
od
atio
n
by
op
erat
ion
al
wo
rkfo
rce
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• P
roje
ct im
pa
cts
on
to
uri
sm
acc
om
mo
dat
ion
will
be
red
uce
d
thro
ug
h p
rovi
sio
n o
f a
cco
mm
od
atio
n f
or
all w
ork
ers
asso
ciat
ed
wit
h t
he
Pro
ject
54
Ver
y
Low
• A
ll w
ork
ers
asso
ciat
ed
wit
h
the
Pro
ject
will
be
ho
use
d at
th
e o
per
atio
nal
vi
llag
e. T
her
e m
ay
be
som
e sh
ort
-ter
m
imp
act
s w
hile
th
e a
cco
mm
od
atio
n
villa
ge
is b
ein
g
con
stru
cte
d
Rea
son
able
Ava
ilab
le
info
rmat
ion
is
ad
eq
uat
e
No
t A
pp
licab
leS
ect
ion
10.5
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 105
Rec
reati
on
Ad
dit
ive
Eff
ect
s•
Re
du
ced
acc
ess
to
recr
eati
on
are
as
du
e to
tem
po
rary
o
r p
erm
anen
t ex
clu
sio
n z
on
es,
lea
din
g to
loss
of
recr
eati
on
al v
alu
e
• R
ed
uce
d a
cces
s to
te
mp
ora
ry
tou
rism
a
cco
mm
od
atio
n
du
e to
use
of
acc
om
mo
dat
ion
b
y P
roje
ct
con
stru
ctio
n o
r o
per
atio
nal
w
ork
forc
e;
po
pu
lati
on
gro
wth
in
du
ced
by
the
Pro
ject
; o
r u
se o
f a
cco
mm
od
atio
n
by
wo
rkfo
rce
of
infr
astr
uct
ure
an
d/o
r co
nst
ruct
ion
p
roje
cts
ind
uce
d
by
the
Pro
ject
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
hev
ron
will
eva
luat
e th
e su
itab
ility
o
f in
vest
men
t in
re
crea
tio
n
act
ivit
ies
and
faci
litie
s fo
r th
e g
ener
al c
om
mu
nit
y as
par
t o
f it
s fu
ture
so
cial
inve
stm
ent
stra
teg
y
• P
roje
ct im
pa
cts
on
to
uri
sm
acc
om
mo
dat
ion
will
be
red
uce
d
thro
ug
h p
rovi
sio
n o
f a
cco
mm
od
atio
n f
or
all w
ork
ers
asso
ciat
ed
wit
h t
he
Pro
ject
• M
ana
gem
ent
of
po
pu
lati
on
gro
wth
is
bey
on
d C
hev
ron
’s c
on
tro
l an
d
ther
efo
re is
no
t w
ith
in C
hev
ron
’s
sco
pe
of
resp
on
sib
ility
• M
ana
gem
ent
of
oth
er p
roje
cts’
w
ork
forc
es is
no
t w
ith
in C
hev
ron
’s
con
tro
l or
sco
pe
of
resp
on
sib
ility
33
Mediu
m•
So
cial
inve
stm
ent
fun
din
g w
ill b
e av
aila
ble
fo
r co
mm
un
ity
pro
ject
s
• A
ll w
ork
ers
asso
ciat
ed
wit
h
the
Pro
ject
will
be
ho
use
d at
th
e co
nst
ruct
ion
vi
llag
e. T
her
e m
ay
be
som
e sh
ort
-ter
m
imp
act
s w
hile
th
e a
cco
mm
od
atio
n
villa
ge
is b
ein
g
con
stru
cte
d
• T
he
pri
vate
se
cto
r w
ill r
esp
on
d to
d
eman
d fo
r te
mp
ora
ry a
nd
p
erm
anen
t h
ou
sin
g
• G
ove
rnm
ent
will
re
leas
e la
nd
for
new
to
uri
st
acc
om
mo
dat
ion
an
d/o
r te
mp
ora
ry
wo
rk c
amp
fa
cilit
ies
Low
Ava
ilab
le
info
rmat
ion
on
C
hev
ron
w
ork
forc
es is
re
aso
nab
le,
ho
wev
er n
o
mo
del
ling
u
nd
erta
ken
fo
r a
dd
itio
nal
p
op
ula
tio
n
gro
wth
No
t A
pp
licab
leS
ect
ion
10.5
Nois
eC
on
stru
ctio
n
Co
nst
ruct
ion
A
ctiv
itie
s•
Dim
inis
he
d q
ual
ity
of
life
du
e to
a
cou
stic
em
issi
on
s th
at a
re a
ud
ible
fr
om
key
re
cep
tor
po
ints
an
d
dim
inis
h q
ual
ity
of
life
/ se
nse
of
sere
nit
y
• S
tres
s-re
late
d
imp
act
s o
n
com
mu
nit
y w
ell-
bei
ng
as a
re
sult
of
ham
mer
ing
no
ise
52
Low
• P
roje
ct w
ill
com
ply
wit
h W
A
no
ise
reg
ula
tio
ns
to r
ed
uce
th
e p
ote
nti
al im
pa
ct
of
no
ise
bey
on
d
the
site
bo
un
dar
y
• R
eg
ula
tory
an
d
pu
blic
p
erce
pti
on
s co
nsi
der
ed
as
par
t o
f th
e ri
sk
asse
ssm
ent
• C
on
stru
ctio
n a
ctiv
itie
s w
ill c
om
ply
w
ith
En
viro
nm
enta
l Pro
tect
ion
(N
ois
e) R
eg
ula
tio
ns
199
7
• N
ois
e w
ill b
e m
ana
ge
d as
par
t o
f th
e C
EM
P. T
he
man
ag
emen
t p
lan
will
fo
cus
on
no
ise
to s
urr
ou
nd
ing
re
cep
tors
bey
on
d th
e si
te b
ou
nd
ary
44
Low
• In
du
stry
sta
nd
ard
tr
affi
c co
ntr
ols
will
b
e in
pla
ce
• N
ois
e le
vels
du
rin
g
con
stru
ctio
n w
ill
com
ply
wit
h
En
viro
nm
enta
l P
rote
ctio
n (
No
ise)
R
eg
ula
tio
ns
199
7
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Un
cert
ain
ties
ex
ist
aro
un
d p
ile
dri
vin
g p
rog
ram
o
f w
ork
s
No
t A
pp
licab
leS
ect
ion
10.6
Ap
pen
dix
U
1
Wheatstone Project Executive Summary
106 | Chevron Australia Pty Ltd
Facto
rP
hase
Asp
ect
Pote
nti
al I
mpacts
Inh
ere
nt
Ris
k (f
rom
Sco
pin
g
Docu
men
t)
Com
men
ts/
Ass
um
pti
on
s (f
rom
Sco
pin
g
Docu
men
t)
Man
agem
en
t an
d M
itig
ati
on M
easu
res
Res
idu
al R
isk
Com
men
ts/
Ass
um
pti
on
s (R
elati
ng t
o re
sidu
al
risk
ran
kin
g)
Con
fiden
ce L
evel
an
d J
ust
ifica
tion
Pote
nti
al
Impacts
to
Matt
ers
of
NE
S
EIS
/ER
MP
R
efere
nce
CL
Ran
kin
gC
LR
an
kin
g
Nois
eO
per
atio
ns
Op
erat
ion
s A
ctiv
itie
s•
Dim
inis
he
d q
ual
ity
of
life
du
e to
a
cou
stic
em
issi
on
s th
at a
re a
ud
ible
fr
om
key
re
cep
tor
po
ints
an
d
dim
inis
h q
ual
ity
of
life
/ se
nse
of
sere
nit
y
52
Low
• P
roje
ct w
ill
com
ply
wit
h W
A
no
ise
reg
ula
tio
ns
to r
ed
uce
th
e p
ote
nti
al im
pa
ct
of
no
ise
bey
on
d
the
site
bo
un
dar
y
• R
eg
ula
tory
an
d
pu
blic
p
erce
pti
on
s co
nsi
der
ed
as
par
t o
f th
e ri
sk
asse
ssm
ent
• O
per
atio
nal
act
ivit
ies
will
co
mp
ly
wit
h E
nvi
ron
men
tal P
rote
ctio
n
(No
ise)
Re
gu
lati
on
s 19
97
44
Low
• N
ois
e le
vels
du
rin
g
con
stru
ctio
n w
ill
com
ply
wit
h
En
viro
nm
enta
l P
rote
ctio
n (
No
ise)
R
eg
ula
tio
ns
199
7
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Un
cert
ain
ties
ex
ist
aro
un
d p
ile
dri
vin
g p
rog
ram
o
f w
ork
s
No
t A
pp
licab
leS
ect
ion
10.6
Nois
eA
dd
itiv
e E
ffe
cts
• D
imin
ish
ed
qu
alit
y o
f lif
e d
ue
to
aco
ust
ic e
mis
sio
ns
that
are
au
dib
le
fro
m k
ey r
ece
pto
r p
oin
ts
• S
tres
s-re
late
d
imp
act
s o
n
com
mu
nit
y w
ell-
bei
ng
as a
re
sult
of
aco
ust
ic
emis
sio
ns
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• C
on
stru
ctio
n a
nd
op
erat
ion
al
act
ivit
ies
will
co
mp
ly w
ith
E
nvi
ron
men
tal P
rote
ctio
n (
No
ise)
R
eg
ula
tio
ns
199
7
• N
ois
e w
ill b
e m
ana
ge
d as
par
t o
f th
e C
EM
P. T
he
man
ag
emen
t p
lan
will
fo
cus
on
no
ise
to s
urr
ou
nd
ing
re
cep
tors
bey
on
d th
e si
te b
ou
nd
ary
44
Low
• N
ois
e le
vels
du
rin
g
con
stru
ctio
n w
ill
com
ply
wit
h
En
viro
nm
enta
l P
rote
ctio
n (
No
ise)
R
eg
ula
tio
ns
199
7
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Un
cert
ain
ties
ex
ist
aro
un
d p
ile
dri
vin
g p
rog
ram
o
f w
ork
s
No
t A
pp
licab
leS
ect
ion
10.6
Ap
pen
dix
U
1
Air
E
mis
sion
sC
on
stru
ctio
n
Co
nst
ruct
ion
A
ctiv
itie
s•
Incr
ease
d
resp
irat
ory
d
isea
se d
ue
to
incr
ease
d
emis
sio
ns
• D
ecr
ease
d p
ub
lic
amen
ity
du
e to
in
crea
sed
air
emis
sio
ns
53
Low
• W
ill b
e m
ana
ge
d
in a
cco
rdan
ce
wit
h o
utc
om
e o
f co
nsu
ltat
ion
a
ctiv
itie
s re
gar
din
g
curr
ent
use
s an
d
valu
es
• D
ust
will
be
man
ag
ed
as p
art
of
the
CE
MP,
incl
ud
ing
mit
igat
ion
m
easu
res
as d
etai
led
in C
hap
ter
9,
Terr
estr
ial R
isk
Ass
essm
ent
and
M
ana
gem
ent
• In
du
stry
sta
nd
ard
traf
fic
man
ag
emen
t co
ntr
ols
will
be
in
pla
ce
53
Low
• A
ir e
mis
sio
ns
will
g
ener
ally
co
nsi
st
of
du
st f
rom
ve
hic
le
mo
vem
ents
an
d
gro
un
d cl
eara
nce
an
d em
issi
on
s fr
om
co
nst
ruct
ion
e
qu
ipm
ent
• A
ir q
ual
ity
will
co
mp
ly w
ith
th
e E
PA
Gu
idan
ce f
or
the
Ass
essm
ent
of
En
viro
nm
enta
l Fa
cto
rs
– p
reve
nti
on
of
air
qu
alit
y im
pa
cts
fro
m la
nd
d
evel
op
men
t si
tes
– N
o.1
8, 2
00
0
• In
du
stry
sta
nd
ard
tr
affi
c m
ana
gem
ent
con
tro
ls w
ill b
e in
p
lace
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce
Un
cert
ain
ties
ar
ou
nd
nu
mb
er,
volu
me
and
typ
e o
f ro
ad
traf
fic
and
h
eavy
veh
icle
s n
ot
yet
kno
wn
No
t A
pp
licab
leS
ect
ion
10.6
Wheatstone Project Executive Summary
Chevron Australia Pty Ltd | 107
Air
E
mis
sion
sO
per
atio
ns
Op
erat
ion
s•
De
crea
sed
pu
blic
am
enit
y d
ue
to
incr
ease
d ai
r em
issi
on
s
53
Low
• W
ill b
e m
ana
ge
d
in a
cco
rdan
ce
wit
h o
utc
om
e o
f co
nsu
ltat
ion
a
ctiv
itie
s re
gar
din
g
curr
ent
use
s an
d
valu
es
• D
ust
will
be
man
ag
ed
as a
par
t o
f th
e O
EM
P5
3L
ow
Th
e m
ain
act
ivit
ies
likel
y to
gen
erat
e ai
r em
issi
on
s d
uri
ng
o
per
atio
ns
are
the
follo
win
g:
• C
om
bu
stio
n o
f fu
el g
as in
th
e g
as
turb
ines
• F
lari
ng
du
rin
g
up
set
or
emer
gen
cy
con
dit
ion
s
• D
ust
gen
erat
ed
d
uri
ng
rou
tin
e m
ain
ten
ance
• T
he
Pro
ject
will
co
mp
ly w
ith
Sta
te
En
viro
nm
enta
l (A
mb
ien
t A
ir)
Po
licy
00
9. D
raft
P
olic
y fo
r P
ub
lic
and
Sta
keh
old
er
Co
mm
ent.
(E
PA
2
00
9)
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce.
No
t A
pp
licab
leS
ect
ion
10.6
Air
E
mis
sion
sA
dd
itiv
e E
ffe
cts
• D
ecr
ease
d p
ub
lic
amen
ity
du
e to
in
crea
sed
air
emis
sio
ns
-N
ot
iden
tifi
ed
in
En
viro
nm
enta
l S
cop
ing
Do
cum
ent
• D
ust
will
be
man
ag
ed
as p
art
of
the
CE
MP
• In
du
stry
sta
nd
ard
traf
fic
man
ag
emen
t co
ntr
ols
will
be
in
pla
ce
53
Low
• A
ir q
ual
ity
will
co
mp
ly w
ith
th
e E
PA
Gu
idan
ce f
or
the
Ass
essm
ent
of
En
viro
nm
enta
l Fa
cto
rs
– p
reve
nti
on
of
air
qu
alit
y im
pa
cts
fro
m la
nd
d
evel
op
men
t si
tes
– N
o.1
8, 2
00
0
• C
om
plia
nce
wit
h
Sta
te
En
viro
nm
enta
l (A
mb
ien
t A
ir)
Po
licy
00
9. D
raft
P
olic
y fo
r P
ub
lic
and
Sta
keh
old
er
Co
mm
ent.
(E
PA
2
00
9)
Rea
son
able
Su
rvey
dat
a av
aila
ble
fro
m
on
e ex
per
t –
com
plie
s w
ith
EP
A
gu
idan
ce.
No
t A
pp
licab
leS
ect
ion
10.6
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