Wooli Village - Clarence Valley Council

Wooli Village
Draft Coastline Management Plan
Source: Draft Plan of Management Wooli Coastal Reserve (CVC 2006b)
4 August 2010
Infrastructure & Environment
8-14 Telford Street
Newcastle East, NSW 2300, Australia
PO Box 668 NEWCASTLE NSW 2300
Telephone: +61 2 4907 5300
Facsimile: +61 2 4907 5333
www.worleyparsons.com
ABN 61 001 279 812
© Copyright 2010 WorleyParsons
SYNOPSIS
This Draft Coastline Management Plan is based on the Wooli Village Coastline Management Strategy
Update and Options Review report and the Wooli Beach/ Village Review of Coastal Hazards,
completed by WorleyParsons in 2010. It should be read in conjunction with the Coastline
Management Strategy Update and Options Review.
The preferred options presented in this report were identified in consultation with the Clarence Valley
Coast and Estuary Management Committee. The Draft Plan will be revised, as necessary, following
public exhibition and review of submissions received.
In summary, the Draft Coastline Management Plan proposes planned retreat to be implemented
through environmental planning and development controls, and potential relocation of existing private
and public assets at risk to address the immediate and medium term coastline hazards affecting
Wooli. A key component of the relocation scheme is investigating the potential for a land swap
mechanism utilising Crown land in Wooli. It is acknowledged that there are no viable long term
coastline management options for the original Wooli Village, as it is predicated that the shoreline will
have essentially receded to the eastern bank of the Wooli Wooli River by 2100.
This report also includes an Emergency Action Plan in the event that a severe storm occurs before
implementation of the Coastline Management Plan.
Disclaimer
This report has been prepared on behalf of and for the exclusive use of Clarence Valley Council,
and is subject to and issued in accordance with the agreement between Clarence Valley Council
and WorleyParsons. WorleyParsons accepts no liability or responsibility whatsoever for it in
respect of any use of or reliance upon this report by any third party.
Copying this report without the permission of Clarence Valley Council or WorleyParsons is not
permitted.
PROJECT 301020- 02273 – COASTLINE MANAGEMENT PLAN
REV
DESCRIPTION
A
Draft
ORIG
REVIEW
H Nelson
D Messiter
WORLEYPARSONS
APPROVAL
DATE
CLIENT
APPROVAL
DATE
4/8/2010
301020-02273 : Rev A : 4 August 2010
CONTENTS
1.
2.
INTRODUCTION ................................................................................................................1
1.1
Area Subject to the Management Plan...............................................................................1
1.2
Coastline Management Principles and Objectives .............................................................1
1.3
Management Actions ..........................................................................................................2
1.3.1
Planned Retreat – Future Development ................................................................2
1.3.2
Planned Retreat – Existing Development and Assets ...........................................2
1.3.3
Dune Management ................................................................................................3
1.3.4
Coastal Erosion Emergency Management ............................................................4
REFERENCES ...................................................................................................................5
Appendices
Appendix 1 Land Swap Option
Appendix 2 Emergency Action Plan
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301020-02273 : Rev A : 4 August 2010
1.
INTRODUCTION
This Coastline Management Plan updates and replaces the previous Wooli Beach Coastline
Management Plan (PBP 1997) which was adopted by Council in 1998. It is based on:
x Redefinition of the hazard lines in the Wooli Beach/ Village Review of Coastal Hazards
(WorleyParsons in 2010) which took into account an additional 10 years of data on shoreline
recession and current NSW Government planning benchmarks for sea level rise.
x Wooli Village Coastline Management Strategy Update and Options Review which took into
account changes in legislation and policy (in force and proposed) since 1997, reviewed
previous options and put forward some additional medium term options.
The 1997 Management Plan identified 25 dwellings as being at immediate risk in a major storm event.
The updated hazard lines identify 44 properties (and approximately 38 dwellings) at immediate risk.
In addition, as the shoreline recedes over time, major public infrastructure such as the water storage
tower will become at risk.
The 1997 Coastline Management Plan (PBP 1997) focused on private assets and aimed to reduce
the risk from coastal hazards by voluntary relocation and voluntary purchase of private dwellings.
However, despite some property redevelopments, no houses have been relocated by owners and no
owners have approached Council to purchase their property. As this option has not been taken up by
the community, and due to the continued growth in market value of beachfront properties (making
purchase or acquisition beyond the resources of government), property purchase does not form part
of this revised Management Plan.
The 1997 Coastline Management Plan also included beach scraping and complementary dune
management programs. Although these works can contribute to a more stable dune system and
hence provide a buffer to storm erosion, they do not increase the volume of sand within the beach
system and hence do not decrease the risk to assets during a severe storm event. However, dune
management still forms part of this Management Plan to maintain safe public access to the beach and
to address the potential isolated exacerbation of storm erosion due to dune blowouts (i.e. sections of
the dune which are destabilised due to loss of vegetation).
1.1
Area Subject to the Management Plan
The Management Plan relates to Wooli as whole, although specific management actions relate to
public land north of the original village and affect the entire original Wooli Village, the majority of
which (including Wooli Road) is affected by the 2100 hazard line.
1.2
Coastline Management Principles and Objectives
The Coastline Management Plan is based on the preferred option of planned retreat. Refer to the
Wooli Village Coastline Management Strategy Update and Options Review for detailed information on
this and other options considered.
A number of mechanisms to achieve planned retreat are put forward, some of which require further
investigation.
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301020-02273 : Rev A : 4 August 2010
The Management Plan objectives are to:
x Progressively retreat from the coast and, in the longer term, retreat from the site of the original
Wooli Village.
x Ensure that future development is removed from areas at risk.
x Provide opportunities for people with dwellings at risk now and over the short-term to continue
living at Wooli.
x Permit owners to update their properties to maintain, or bring them up to, contemporary living
standards.
x Maintain services and facilities in the medium term to support the local community and visitors.
1.3
Management Actions
1.3.1
Planned Retreat – Future Development
The following changes to environmental planning instruments and development controls are
recommended:
x amend the Draft Clarence Valley Local Environmental Plan (LEP) to include lapse of
development consent when the distance between a dwelling and the erosion scarp is less than
18m
x include this information on Section 149 certificates
x amend the Coastal Erosion and Land Instability Map in the LEP to cover the entire original
Wooli Village
x amend the area to be excluded from State Environmental Planning Policy (SEPP) (Exempt and
Complying Development Codes) 2008 to cover the entire original Wooli Village
x revise the Clarence Valley Development Control Plan (DCP) so that it relates to the re-defined
hazard lines and to the entire original Wooli Village
x amend DCP controls so that those relating to the 50 year hazard line apply to the 100 year
hazard line
x include a definition for permitted residential development in the DCP, i.e. structures that can be
easily dismantled, removed or relocated
x include a note in the DCP that development controls relating to areas at immediate risk will,
over time, apply to areas between the immediate and 2050 hazard line.
1.3.2
Planned Retreat – Existing Development and Assets
The following land swap option (see Appendix 1) is recommended for further investigation to provide
lease-hold land for relocation/ re-building of private dwellings at immediate risk, and at risk over the
next 40 years. Note that a land swap for the purposes of coastal zone risk management is not an
adopted Government policy, nor has the Government formed a position on this option at this time.
Accordingly, this option is subject to further investigation, based on merit.
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301020-02273 : Rev A : 4 August 2010
The land swap could involve:
x relocation of the primary school to the Department of Education land adjacent to the northern
portion of Wooli
x relocation of the southern caravan park to the existing school site
x relocation of the tennis courts and community hall etc to the reserve area at the northern end of
the bowling greens (or to the northern most existing bowling green, if not required)
x loss of the open space opposite the Post Office (between Carraboi Street and Riverside Drive)
and loss of the Wooli Sportsground.
This would make the following areas available for a land swap so that existing residents could
relocate within Wooli:
x existing southern caravan park
x strip of open space fronting the eastern side of Main Street opposite the bowling greens (and
possibly the reserve at the northern end of the bowling greens, if only one green is required)
x the reserve west of the Post Office
x Department of Education and Training Land (adjacent to the new subdivision area)
x Wooli Sportsground.
Lease-hold title has been proposed so that development is not permanently relocated to areas which
will become at risk from coastal erosion and recession and/ or become more susceptible to flooding in
the future.
The suggested ‘trigger’ for relocation is the same as the trigger for lapse of consent for new
development, i.e. when the distance between a dwelling and the erosion scarp is less than 18m. As
there is no means of compelling landowners to relocate (to proposed lease-hold land or even to
relocate outside of Wooli), disincentives to stay and incentives to move will need to be investigated.
Incentives may include financial assistance for those agreeing to move, with the disincentive being
that owner’s would be responsible for demolition and cleanup costs once a dwelling was damaged
and unsafe for habitation (as well as loss of their property).
It is also recommended that a servicing strategy be developed to cover the relocation, modification or
redesign of utilities etc to maintain services to the original Wooli Village, until the area is abandoned.
This includes relocation of the water tower (which become at risk within 40 years), or investigation of
other options for maintaining a potable water.
1.3.3
Dune Management
The Wooli Beach Rehabilitation Plan (CVC and Coastcare 2005) should continue to be implemented,
with an emphasis on rehabilitating informal beach accessways and addressing illegal vegetation
clearing and mowing of reserves by adjacent property owners.
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301020-02273 : Rev A : 4 August 2010
1.3.4
Coastal Erosion Emergency Management
An Emergency Action Plan (EAP) is included in Appendix 2 in the event that a major storm erosion
event occurs, prior to implementation of the Management Plan actions.
Planning actions associated with this include:
x contacting holiday home and rental property owners to invite them to be included on a register
to provide temporary refuge/ accommodation for residents who’s homes may be at risk or
damaged during a severe storm event
x consideration of a sand storage shed near the existing State Emergency Services (SES) facility
at Wooli Sportsground
x development of a landscape plan for the reserve area immediately south of the water tower
(west of South Terrace) incorporating imported sand for use in sandbags, in the event of a
severe coastal storm.
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301020-02273 : Rev A : 4 August 2010
2.
REFERENCES
Clarence Valley Council (CVC 2006a), Clarence Valley Development Control Plan.
CVC and Coast Care (2005), Wooli Beach Rehabilitation Plan.
Patterson Britton & Partners (PBP) (1997), Wooli Beach Coastline Management Plan.
WorleyParsons (2010a), Wooli Beach/ Village Review of Coastal Hazards.
WorleyParsons (2010b), Wooli Village Coastline Management Strategy Update and Options Review.
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301020-02273 : Rev A : 4 August 2010
Appendix 1 - Land Swap
107
0 0
108
101
0
0
104
97
0
0
100
93
0 91
0
96
Relocated
Relocated tennis
tennis
courts
courts and
and hall
hall
0
6
307
303
8
0
0
0
0
0
89
90
79
90
75
84
71
80
69
78
76
46
51
21
24
32
23
34
0
27
16
4
63
57
56
36
29
31
0
55
62
61
59
58
61
30
25
6
2
28
23
14
18
54
60
59
58
38 40
42 44
46 48
50
56
52
54
0
0
0
72
68
64
57
60
55
53
56
51
54 54
52
50
47
43 43
39
0
46
0
42
33
38
31
0
34
27
25
49
0
89
65
63
61
59
35
52
5
19
44
Relocated
Relocated primary
primary
school
school and
and water
water tower
tower
0
89
7
47
48
50
10
300
26
0
11
9
22
302
305
7
20
304
12
7
17
18
306
309
8
15
16
308
311
5
0
310
313
4
14
14
21
8 10
12
45
40
42
6
9
13
12
312
315
3
13
10
314
317
2
5
8
316
319
1
6
318
321
105
769
0
320
112
30
25
0
Relocated
Relocated
caravan
caravan park
park
28
23
24
17 17
15
20
16
11
12
5
0
0
156
154
152
150
148
146
8
4
2
1
155
153
151
149
0
0
2
4
147
6
145
8
143
141
139
137
10
12
14
0
17
16
18
15
133
127
20
22
24
26
28
0 0
New lots / relocated
properties
144
142
140
138
136
134
132
130
128
128
126
13
11
124
16
9
121
122
7
120
5
115
118
3
109
1
114
107
Lots / properties to be
relocated through land swap
0
0
Clarence Valley Council
Wooli Village - Coastline Management
Strategy Update and Options Review
DRAFT
Appendix 2 - Emergency Action Plan
Wooli Village
Emergency Action Plan
Source: The Daily Examiner, 26 May 2009
3 August 2010
Infrastructure & Environment
8-14 Telford Street
Newcastle East, NSW 2300, Australia
PO Box 668 NEWCASTLE NSW 2300
Telephone: +61 2 4907 5300
Facsimile: +61 2 4907 5333
www.worleyparsons.com
ABN 61 001 279 812
© Copyright 2010 WorleyParsons
Disclaimer
This report has been prepared on behalf of and for the exclusive use of Clarence Valley Council,
and is subject to and issued in accordance with the agreement between Clarence Valley Council
and WorleyParsons. WorleyParsons accepts no liability or responsibility whatsoever for it in
respect of any use of or reliance upon this report by any third party.
Copying this report without the permission of Clarence Valley Council or WorleyParsons is not
permitted.
PROJECT 301020- 02273 – EMERGENCY ACTION PLAN
REV
DESCRIPTION
A
Preiminary Draft
ORIG
REVIEW
H Nelson
D Messiter
WORLEYPARSONS
APPROVAL
DATE
CLIENT
APPROVAL
DATE
3/8/10
301020-02273 : Rev A : 4 August 2010
CONTENTS
1.
INTRODUCTION ................................................................................................................2
1.1
Background.........................................................................................................................2
1.2
Clarence Valley Local Flood Plan.......................................................................................3
1.3
Purpose of the Emergency Action Plan ..............................................................................4
2.
EMERGENCY ACTION PLAN............................................................................................7
2.1
Pre Planning and Pre-storm Phase ....................................................................................7
2.2
Category 1 ..........................................................................................................................7
2.3
Category 2 ..........................................................................................................................7
2.4
Category 3 (Standby)..........................................................................................................8
2.5
Category 4 (Implementation) ..............................................................................................8
2.6
Post-storm Phase ...............................................................................................................8
2.7
Contact List for Emergency Action Plan ...........................................................................15
REFERENCES.................................................................................................................................16
Tables
Table 2.1 Emergency Action Plan
Figures
Figure 1.1 Sandbag Revetment Design
Figure 1.2 Toe Protection Design
Appendix
Hazard Lines
Potential Breakthrough Location
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301020-02273 : Rev A : 4 August 2010
1.
INTRODUCTION
This Emergency Action Plan (EAP) has been prepared in the event of a major coastal storm, and in
particular to address risks to assets prior to the implementation of the Coastline Management Plan.
1.1
Background
Wooli is located on the NSW Mid-North Coast in the Clarence Valley Council (CVC) local government
area (LGA). The Village of Wooli is surrounded by Yuraygir National Park and adjoins the Solitary
Islands Marine Park. Road access off the Pacific Highway is via Tyndale, Ulmarra or Eight Mile Lane
just north of Glenugie (12km south of Grafton), which is also the Grafton airport turn off. Wooli is
49km from Grafton via the latter route. Wooli is located between the Wooli Wooli River and South
Pacific Ocean, with the original village located on a narrow spit.
Wooli Beach suffered severe storm damage in 1954, 1974 and 1996. Over the last few years, the
frontal dune has been severely eroded leaving a high, steep escarpment along much of the
beachfront. The escarpment has continued to recede due to erosion and subsequent slumping with
successive ocean storms, in particular a storm event in late May 2009.
A review of coastline hazard lines for Wooli (WorleyParsons 2010a) has identified that 44 lots are
located in the zone of wave impact for a severe storm (although a few dwellings on these lots are
located landward of the immediate impact line). These beachfront properties are all located south of
the bowling club. In addition, monitoring by Council in 2007 identified approximately 20 beachfront
dwellings located within the ‘zone of reduced foundation capacity’ (less than 18m from the dune crest)
which are susceptible to structural damage due to the reduced bearing capacity of sand in this zone.
Of the 20 properties, the nine most at risk were located around 13 to 14m from the dune crest. See
figures in Appendix 1 which show the immediate (2010) hazard line, limit of the ‘zone of reduced
foundation capacity’ and the predicted location of the immediate hazard line in 2050.
In addition to wave impacts from coastal storms, Wooli is subject to flooding from the Wooli Wooli
River. During a 1% or 2% Annual Exceedance Probability (AEP) flood event, inundation of Wooli
Road (in the vicinity of the Wooli Sportsground) is estimated to be 0.35m. In a more severe event,
the road would be cut between the northern portion of Wooli and the original village .
In addition, flooding in the adjacent catchment, which typically occurs a day or more after a major
coastal storm event, can cut road access at Sandy Crossing and Whites Bridge, isolating Wooli from
between a few hours to a few days. This occurred following the storm in late May 2009.
There is also potential for the Wooli Wooli River to break through to the ocean at the northern end of
the original Wooli Village, if a major flood event coincided with a major coastal erosion event. See
Appendix 1 for a map showing the potential break through location.
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301020-02273 : Rev A : 4 August 2010
1.2
Clarence Valley Local Flood Plan
The 2007 Clarence Valley Local Flood Plan (sub-plan of the Clarence Valley Local Disaster Plan
(DISPLAN)) guides emergency activities in the event of flood and/ or coastal erosion. This Plan is
currently an interim document. General evacuation triggers in the Local Flood Plan are:
x
failure of essential services;
x
flooding affecting properties; and
x
isolation of properties (particularly where residents require access to medical help).
The Local Flood Plan also covers resupply of settlements which become isolated. All of Wooli is
affected by the Probable Maximum Flood (apart from the foredune). In a 1% AEP flood event, Wooli
Road, some properties to the east of Wooli Road and some properties to the west of Main Street (at
the northern end of the original Wooli Village) are affected.
Flood evacuation triggers (i.e. flood heights) are still to be determined for Wooli. However, the
northern and southern portions of Wooli can be cut off from each other before over-floor flooding of
dwellings occurs.
Information on major flooding and storm events is available to residents by phoning the State
Emergency Service (SES) 132 500 number (the SES advises on local road flooding). In the event
that power and phones are out, the Wooli Post Office is the point of contact for residents. The SES
has access to a boat which can be used to ferry people out and bring supplies in when the road at
Sandy Crossing floods. In the event of a medical or other emergency the Wooli Sportsground oval
would be used as a helicopter landing pad. Signs are also installed to warn that roads are
impassable (pers. comm. Ann Mara, local SES Coordinator).
The preferred evacuation point for Wooli is the Pillar Valley Rural Fire Service (RFS) shed for transfer
of evacuees to Grafton or Coffs Harbour. Other evacuation centres are identified as the Wooli Motel
and Wooli Bowling Club.
Annex Z of the Local Flood Plan addresses the management of coastal erosion. When the Bureau of
Meteorology (BoM) issues a Severe Weather Warning for dangerous waves or storm surge (a
forecast for onshore waves of 5m or more, or storm surge of 0.5m or more for the NSW North Coast)
the role of the SES is to advise the community of the storm; protect life through warning and
evacuation; and coordinate lifting/ relocation of readily moveable household items and commercial
stock and equipment. It is also noted in Annex Z that the SES may initiate response operations when
large storm induced waves are observed locally and no BoM warning has been issued.
When a BoM warning has not been issued, and the SES has not mobilised in response to an
imminent storm, Council’s role is essentially the same as the SES’s role because the Coastline
Management Plan is based on planned retreat (i.e. no property protection works are proposed).
However pre-emptive installation of a sandbag revetment could be considered, particularly where the
dune is in an eroded state from a previous storm event, in an attempt to reduce further storm impacts
so that controlled demolition of damaged dwellings could be undertaken post-storm. This would
reduce the amount of debris washed onto the beach and/ or transported offshore. As many of the
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301020-02273 : Rev A : 4 August 2010
dwellings in the original Wooli Village are old cottages, health and safety issues associated with
debris include the collection and disposal of asbestos sheeting and fencing.
The Draft document, A Guide to the Statutory Requirements for Temporary Coastal Protection Works
(DECCW April 2010) provides information on quantities for sandbagging and construction of
temporary sandbag revetments. Indicative volumes are 30m3 per property (i.e. 2500 sandbags of the
size 825 x 350mm). This is based on a property width of 15m, situated on land at 6m above
Australian Height Datum (AHD), with the toe of the emergency works at -1m AHD and the revetment
constructed as per Figure 1.1. Note that the DECCW guidelines are under review and the latest
version will be incorporated into the EAP, as applicable. Most Wooli properties at risk are located on
land at a height of around 6m AHD. Properties on South Terrace are approximately 15m wide, with
properties on Main Street, approximately 10m wide.
It is proposed that sand be stockpiled for emergency purposes in landscaped mounds on the reserve
south of the water tower, west of South Terrace. Based on protection of the 20 properties within the
‘zone of reduced foundation capacity’, up to 600m3 of material would be required. For protection of
the beach frontage affected by the immediate hazard line (44 properties including those within the
‘zone of reduced foundation capacity’) up to 1200m3 of sand would be required (this figure takes into
account that the frontage of some properties is about 10m rather than 15m wide).
The cleared area of the reserve is approximately 3000m2, which would result in approximately 0.4m of
fill, on average, over the site to provide sufficient sand for temporary protection of the 44 properties at
immediate risk. Alternatively a smaller volume of sand could be stored to provide a sufficient volume
for toe protection, as shown in Figure 1.2. The local SES coordinator has also suggested installation
of a storage shed near the SES facility at Wooli Sportsground. This could provide a secure place to
stack sandbags which could also be used in an emergency, possibly an amount sufficient to protect
the nine dwellings closest to the dune crest.
1.3
Purpose of the Emergency Action Plan
Proposed amendments to the Coastal Protection Act include the following new Section 55C (2) (a):
A coastal zone management plan must not include the following:
a)
matters dealt with in the State Disaster Plan under the State Emergency and Rescue
Management Act 1989 in relation to the prevention of, preparation for, response to and
recovery from emergencies.
Accordingly, as noted in Section 1.2, this Plan applies when a BoM warning for dangerous waves or
storm surge has not been issued and the SES has not mobilised in response to a predicted storm
event.
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301020-02273 : Rev A : 4 August 2010
Source: DECCW April 2010
Figure 1.1 Sandbag Revetment Design
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301020-02273 : Rev A : 4 August 2010
Source: DECCW April 2010
Figure 1.2 Sandbag Toe Protection
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301020-02273 : Rev A : 4 August 2010
2.
EMERGENCY ACTION PLAN
Under each implementation phase the triggers for response and emergency actions are outlined.
Table 2.1 lists actions to be taken by Council prior to, and if the triggers are met. It is envisaged that
the SES would be involved if a significant number of dwellings at Wooli were threatened and/ or a
coastal erosion event coincided with a major flood event, requiring whole scale evacuation from the
original Wooli Village. Accordingly, only arrangements for evacuation within Wooli are included in
Table 2.1.
2.1
Pre Planning and Pre-storm Phase
A CVC Coordinator, responsible for monitoring of storm events and implementation of the EAP should
be appointed and their role and responsibilities defined (as outlined in Table 2.1). Appropriate
emergency contacts should be identified.
As an initial action the acquisition, transport and stockpiling of sand for emergency purposes should
be undertaken. Proposed locations for sand stockpiling are the reserve south of the water tower and
possibly a storage shed near the SES facility at Wooli Sportsground.
Identification of properties which may be used as temporary refuges/ accommodation in the event of a
coastal erosion event should be undertaken and OH&S procedures developed to deal with storm
debris issues, such as collection and disposal of asbestos.
Residents should be made aware of hazard lines in relation to their properties and advised of
emergency procedures and actions that they could take in advance to reduce losses.
Other than the actions listed above, the Pre-storm Phase is concerned with monitoring and
predicting the likelihood of an event that may lead to implementation of the EAP.
2.2
Category 1
Regardless of whether or not a “Severe Weather Warning” has been released by the BoM, Category
1 is triggered if a significant erosion escarpment forms. An escarpment would be considered
significant if the location of the erosion escarpment began to recede landward, approaching property
boundaries.
2.3
Category 2
Category 2 is triggered when:
x
the distance between the most seaward part of any wall of a building and the most landward
extent of the dune erosion scarp is less than 10m; and/ or
x
significant offshore wave height is forecast to exceed 3m (taken to be if the Bureau of
Meteorology (BoM) has issued a strong wind, gale, storm force or hurricane force warning for the
coastal waters in the area and the predicted wind direction is on-shore) coinciding with predicted
tides exceeding 1.8m (at Fort Denison).
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301020-02273 : Rev A : 4 August 2010
These triggers are based on those identified in the Draft Minister’s Requirements for Temporary
Coastal Protection Works (April 2010) as this would be the point at which dwellings were considered
at imminent risk from coastal erosion.
The Minister’s Requirements also make reference to storm tide or large wave (BoM) severe weather
warnings or a tropical cyclone warning or watch, however, this is when the SES would be involved.
An emergency meeting should take place at this time to discuss an appropriate strategy. This
meeting should involve the local SES coordinator. Any weather/ coastal erosion data collected
should be presented at this time to assist in expedient decision-making.
2.4
Category 3 (Standby)
No parameter can be adopted as the sole trigger for Category 3. Experienced judgement is required
by those persons at the emergency meeting to activate this category. Some factors of significance in
making this judgement would include:
x existing beach conditions (beach width, sand volume)
x location of rips
x coastal storm predicted behaviour (wave height, wave direction)
x water level predicted behaviour (particularly tide)
Activities during Category 3 (Standby) would include preparations for emergency protection works
and evacuation of residents from dwellings that are at risk.
2.5
Category 4 (Implementation)
No single parameter serves as the trigger for shifting from Category 3 (Standby) to Category 4
(Implementation). Again, experienced judgement is required by those persons at the emergency
meeting to activate this category. Advice from an experienced coastal engineer and/ or geotechnical
engineer after a site inspection should be sought, if possible.
2.6
Post-storm Phase
Post-storm Phase related activities should only be undertaken once the storm has abated and it is
safe. Immediate Post-storm Phase activities would include assessment of damage, clean up and
removal of hazardous materials from the area, co-ordination and return of evacuated people where it
is safe to do so and erection of relevant safety signage.
Following this, changes to the coastline and any new areas at risk should be determined through site
inspections and survey. The Coastline Management Plan and EAP should be reviewed and
amended as required.
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301020-02273 : Rev A : 4 August 2010
Page 9301020-02273 : Rev A : 4 August 2010
with a resident neighbour to move removable valuables)
non-resident owners of actions that could be taken in advance to reduce losses (e.g. arrange
would be at risk of damage or destruction in a severe storm event – advise residents and
these - advise owners of properties affected by the immediate hazard line that their dwellings
Make residents aware of the Wooli hazard lines and where their properties lie in relation to
emergency
tower (west of South Terrace) incorporating imported sand for use in sandbags in an
Develop and implement a landscape plan for the reserve area immediately south of the water
Liaise with the SES regarding a sand storage facility at Wooli Sportsground
Club)
contacts, DECCW, SES, relevant stakeholders, Post Office, Wooli Motel, Wooli Bowling
Compile phone numbers of relevant contacts in case of a storm event (e.g. internal Council
Develop OH&S procedures for dealing with storm debris potentially containing asbestos
for this purpose, with arrangements made for access through the local real estate agent)
resulting in property damage (owners could be invited to register their holiday home on a list
Identify holiday homes or rentals located landward of the immediate hazard line which could
be used as temporary refuge/ accommodation in the event of a coastal erosion event
CVC Coordinator
Action /Reporting
possible
Pre-planning for possible storm event
PrePlanning
Responsible
Council Officer
should be undertaken as soon as
Trigger
Category
Table 2.1 Emergency Action Plan
No other category is active but a
Pre-storm
Phase
storm is imminent
Trigger
Category
advise CVC Coordinator
Page 10301020-02273 : Rev A : 4 August 2010
Confirm the availability of labour, plant and equipment to install sandbag revetments and
Operations
revetments in areas most at risk)
Consider installation of emergency coastal protection measures (pre-emptive sandbag
alternative accommodation, the Wooli Bowling Club or Wooli Motel
If resources permit, assist with transport of removable items and co-ordinate evacuation to
should take (e.g. move valuables, prepare to evacuate)
Advise Wooli residents/ property owners of the likelihood of coastal erosion/ actions they
advise residents in the event that phones/ power is cut
Advise Wooli Post Office staff of the likelihood of coastal erosion provide updates so they can
coastal erosion event is likely
Notify Manager Operations, Manager Assets and Manager Environment and Open Space if a
and beach conditions on a daily basis
Undertake web-based monitoring and reporting of weather, wave forecasts (BoM website)
Action /Reporting
Manager
CVC Coordinator
Responsible
Council Officer
Category 2
Triggered if a significant erosion
Category 1
Operations
Manager
current situation – record outcome
predicted increase in storm threat
for reporting
Page 11301020-02273 : Rev A : 4 August 2010
Take photos of the erosion escarpment and beach features and forward to CVC Coordinator
Close the beach at all public access points with barrier tape and erect "Closed Beach" signs
hazard line
Undertake preparations for the evacuation of residents in dwellings affected by the immediate
stakeholders to determine whether Category 3 measures should be implemented – report on
Arrange emergency meeting with Mayor, DECCW, SES, CVC staff and any other relevant
these to the CVC Coordinator
CVC Coordinator
Take digital photos of erosion escarpment, location and any 'rip head' formation and forward
Operations
on alert for an emergency meeting if required
Notify all appropriate persons including the Mayor, DECCW, SES, CVC staff and have them
reports of erosion
Increase frequency of web-based monitoring and keep records of any weather warnings/
Action /Reporting
Manager
CVC Coordinator
Responsible
Council Officer
10m of any major built asset with a
Top of erosion escarpment within
predicted increase in storm threat
escarpment forms and there is a
Trigger
Category
evacuation
erosion control measures and
implemented to prevent public access, e.g. using star pickets and barrier tape
Operations
Page 12301020-02273 : Rev A : 4 August 2010
Conduct reconnaissance at erosion trouble spots
Engage coastal/ geotechnical engineer for site inspection
Take photos of area and forward photos to Coordinator for reporting
equipment to beach and stockpile areas and commence filling sandbags
Transport all necessary erosion control materials (unfilled sand bags) and plant and
Cordon off the beach /foreshore where erosion control measures (sand bagging) will be
Manager
risk.
Inform residents of the situation and commence evacuation of all persons from dwellings at
implemented – report on current situation – record situation and outcomes of meeting
Arrange emergency meeting with Mayor, DECCW, SES, CVC staff and any other relevant
(Standby) for implementation of
CVC Coordinator
Action /Reporting
stakeholders to determine whether Category 4 erosion control measures should be
Decision made during emergency
Category 3
(Standby)
Responsible
Council Officer
meeting to increase to Category 3
Trigger
Category
Post-storm
Phase
Decision is made during emergency
Category 4
conduct post-storm activities
Storm has abated and it is safe to
physical erosion protection measures
meeting for implementation of
Trigger
Category
CVC Coordinator
coastal engineer and monitor the integrity of sandbag revetments
Operations
Page 13301020-02273 : Rev A : 4 August 2010
Advise Manager Operations on reinstatement of damaged beach accessways
sound
Coordinate return of evacuated people and belongings where dwellings are structurally
hazardous materials from the beach can commence
Advise Manager Operations that general cleanup and restoration works/ remove any
danger of collapse due to proximity to eroded dune escarpment
Organise Manager Operations and/ or structural engineer to assess houses in imminent
services etc
Organise Manager Assets and Manager Operations to assess damage to property, roads,
Take photos of works and forward to CVC Coordinator for reporting
River breakthrough location
Conduct reconnaissance at other erosion trouble spots, particularly the potential Wooli Wooli
Place emergency sandbags as required under direction of Coordinator and experienced
Continue evacuation of all persons from dwellings affected by immediate hazard line
actions taken
Coordinate Manager Operations to implement erosion control measures and record all
Action /Reporting
Manager
CVC Coordinator
Responsible
Council Officer
Post-storm
Phase
Category
Trigger
Responsible
Council Officer
Page 14301020-02273 : Rev A : 4 August 2010
event, lessons learned, photos of the event and retain for future reference
Review and collate all records of the storm event, actions taken prior to and during storm
Review the Emergency Action Plan (EAP) and update as necessary
Review the Wooli Coastline Management Plan in consultation with other stakeholders
Liaise with DECCW to determine any changes to the coastline and any new areas at risk
blow outs etc
Undertake a survey of the beach levels and other features e.g. erosion escapements, dune
escarpment to a more stable slope using machinery
escarpments present a public safety hazard – in high use areas collapse the erosion
Advise Manager Operations to erect relevant safety warning signs where unstable dune
Action /Reporting
2.7
Contact List for Emergency Action Plan
Name
Phone Number
CVC Coordinator:
CVC Mayor:
CVC Manager Operations (or delegate):
CVC Manager Asset (or delegate):
CVC Manager Environment and Open Space (or delegate):
Local SES coordinator:
DECCW representative:
Wooli Post Office:
Wooli Motel:
Wooli Bowling Club:
Page 15
301020-02273 : Rev A : 4 August 2010
REFERENCES
DECCW 2010, A Guide to the Statutory Requirements for Temporary Coastal Protection Works (Draft
April 2010)
WorleyParsons 2010a, Wooli Beach Village Review of Coastal Hazards
WorleyParsons 2010b, Wooli Village Coastline Management Strategy Update and Options Review
Page 16
301020-02273 : Rev A : 4 August 2010
Appendix Hazard Lines
Clarence Valley Council
Wooli Beach / Village Review of Coastal Hazards
2010 Hazard
2010 Reduced Foundation Capacity Hazard
2050 Hazard including SLR
2100 Hazard including SLR
O:301020-02273\Deliverables\Coastal Hazard\Figures\Fig4.1.wor
DRAFT
Coastal Hazard Lines - North
June 2010
Clarence Valley Council
Wooli Beach / Village Review of Coastal Hazards
2010 Hazard
2010 Reduced Foundation Capacity Hazard
2050 Hazard including SLR
2100 Hazard including SLR
O:301020-02273\Deliverables\Coastal Hazard\Figures\Fig4.2.wor
DRAFT
Coastal Hazard Lines - South
June 2010
00
25
25
50
50
meters
Possible
Possible Wooli
Wooli River
River Break
Break
Through
Through Location
Location
B
Blloocckk
66,, TTrr
aannsseecct
t 33
1% AEP Catchment Flooding
Inundation Extent (Approx.)
PMF Catchment Flooding
Inundation Extent
O:301020-02273\Deliverables\Coastal Hazard\Figures\Fig3.6.wor
Clarence Valley Council
Wooli Beach / Village Review of Coastal Hazards
2010 Hazard
2050 Hazard including SLR
2100 Hazard including SLR
DRAFT
Wooli River Entrance Stability \
Catchment Flooding
June 2010