EIS 249 AA052595 Environmental impact statement for ...
97
EIS 249 AA052595 Environmental impact statement for dredging, site stabilisation and floating jetty and shore facilities, Blue Dolphin Caravan Park
Transcript of EIS 249 AA052595 Environmental impact statement for ...
EIS 249
AA052595
Environmental impact statement for dredging, site stabilisation
and floating jetty and shore facilities, Blue Dolphin Caravan
Park
w
. . .
PRIMARY INDUSTRIES
AA052595
oO3 —
ENVIRONMENTAL IMPACT STATEMENT
FOR DREDGING, SITE STABILISATION,
AND FLOATING JETTY AND SHORE FACILITIES
BLUE DOLPHIN CARAVAN PARK
MR. K. HARRIS
John Allen & Associates Pty. Ltd. Stoker House, Gordon Street, COFFS IIARBOUR.. NSN,'~/. 2450.
Ph. (066) 52-LL304
September, 1984.
FORM 4.
ENVIRONMENTAL PLANNING AND ASSESSMENT ACT, 1979 (SECTION 77 (3)(d
ENVIRONMENTAL IMPACT STATEMENT.
This Statement has been prepared on behalf of Mr. K. Harris, being the
applicant making the development application referred to below.
The Statement accompanies the development application made in respect of the
development described as follows:
Dredging, Bank Stabilisation, Site filling and
Construction of Floating Jetty with Shore Facilities.
The Development application relates to the land described as follows:
Portion t59, Parish of Yamba, County of Clarence
~111d Clal-clice lliver.
'Iiie contents of this ~tatemeiiL as required by Clause 34 of the
Planning and Assessment Regulation, 1980, are set forLh in the accompanyi.ng
pages.
Name, Qualifications and Address
JOHN NEVE ALLEN LGE; MIE(AUST);
of person who prepared Environmental
STOKER HOUSE LGTCP; MRAIPR.
Impact Statement:
GORDON STREET,
COFFS HARBOUR. N.S.W. 2450.
I, JOHN NEVE ALLEN, of Stoker House, Gordon Street, COFFS HARBOUR, hereby
certify that I have prepared the contents of this Statement in accordance
with Clauses 34 and 35 of the Environmental Planning and Assessment
Regulation, 1980.
.........................
(Signature)
~2 0 - 17- Date: ...................
ENVIHONMENTAL WACT STATEMENT.
FOR DREDGING, SITE STABILISATION,
AND FLOATENG JETTY AED SHORE FACILITIES.
BLUE DOLPHIN CARAVAN PARK
Q K. Harris
John Allen & Associates pLy. LLd.
Stoker House, Gordon Street, COFFS HARBOUK. 245(j.
Ph: (066) 52 4304
September, 1984.
C 0 N T E 1\1 T S .
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1.0 SUH-1ARY
I
2.0 I14TRODUCTTON
3
2.1 Brief Description
2.2 Location and Access 3
2.3 Zonin,,s and Ownership 4
2.4 Present Usa,-Ie 4
2.5 Object i ve";
3.0 DETAILED DESCIZIPTIOil OF PROPOSAL 7
3.1 Dred-ing and Associated Stabilization and Fillino 7
J.1.1. Area to be dredoed and options considered 7
3.1.2 Dredge and other machinery 61
3.1.3 Quantities to be removed and duration of
operation 11),
3.1.4 Bank Stabilization and beach stability 9
3.1.5 Site Fillin- 10
3.1.6 Effluent and effluent control io
3.1.7 Trucking operations and traffic movements 12
3.1.8 Hours of operation
3.2 1.1arina and Associated Facilities 13
3.2.1 Location and layout
3.2.2 JeLty construction and waLer—way access
3.2.3 Fu e I I i n,,, f a c i I i. t i es
3.2.4 Shore facil-ities Punip all
3.2.5 Pollut-ion, prevention and control 15
3.2.6 Shore based facilities t5
3.2.7 Storm runoff and control 10
3.2.8 Landscaping I U
3.2.9 Noise and dust control 10"
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4.0 ENVIRONMENTAL CONSIDERATIONS 17
4.1 The Existing Environment 17
4.1.1 The man-made environment 17
4.1.2 The aquatic environment 18
4.1.3 The terrestrial environment 24
4.1.4 The social and economic environment 25
4.2 Environmental Impact and Interactions 26
4.2.1 Dredging, bank stabilization and filling 26
4.2.2 Jetty, marina and associated shore facilities 36
4.2.3 Economic and social impacts 40
4.3 Archaeological Sites 40
5.0 JUSTIFICATIO1,1 42
5.1 Dredging and Bank Stabilization 42
5.2 Narina and Jetties 44
5.3 Alternatives Considered 45
6.0 REQUIREMENTS OF GOVERNMENT DEPARTMENTS AND AUTHORITIES 46
6.1 Department of Enivronment and Planning 46
6.2 Other Departments 46
6.3 Local Organisations and Persons Affected by the
Operation 50
REFERENCES 51
LIST OF PHOTOS
Photo 1. - Existing Jetty at Caravan Park. 4
Photo 2. - Existing sand flats in front of park. 7
Photo 3. - Bank erosion adjacent to Banksia fringe. 9
Photo 4. - Stabilised section existing park foreshore. 10
Photo 5. - View of area to be filled and levelled. 11
Photo 6. - View north-west over proposed Jetty location
towards oyster leases. 14
Photo 7. - View east from existing jetty. 17
Photo 8. - Fringing banksias create pleasant environment and
should be protected. 33
Photo 9. - View over stockpile site towards Yamba Road. 34
Photo 10. - View from end of existing jetty towards boat harbour 35
Photo 11. - Existing jetting. Note mooring exposed at low tide. 37
Photo 12. - Existing sand flats. Note drag marks UILIsed by
fishing boats being dragged across flats. 43
LIST OF FIGURES.
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Figure - Locality Plan
Figure - Zoning Plan
Figure - Seagrass beds
Figure - Proposed contours and seagrass beds
Figure - Proposed Dredging - Detail Plan
Figure - Design sections
Figure - Marina Layout
Figure - Jetty Details.
LIST OF ANNEXURES.
ANNEXURE - Department of Environment and Planning
ANNEXURE - Department of Environment and Planning
ANNEXURE - Lands Office
ANNEXURE - Department of Mineral Resources
ANNEXURE, - DepartmenL of Agriculture
ANNEXURE' - The Maritime Service Board of N.S.W.
ANNEXURE - Public Works Department
ANNEXURE "if" - State Pollution Control Commission
ANNEXURE - Soil Conservation Service of N.S.W.
ANNEXURE - Maclean Shire Council
ANNEXURE "V - Big River Oyster Supply
ANNEXURE "L" - Clarence River Fishermen's Co-operative Ltd.
ANNEXURE "11" - Noise Impact Statement.
A C K N 0 W L E D G E M E N T S
Travers Mor-an Pty Ltd for preparation of biological data and
the biological sections of the report.
H.K. Clarke & Associates for the preparation of the Noise Impact
Statement.
Jolly, Sharp & Skehan P/L - site and hydro survey.
1.0 SUMNLARY
The applicant (who is the owner of the Blue Dolphin Caravan Park) wishes
to carry out ~improveljlcrjL and expiinsi.oii worl~.,;.
These works will comprise three separate and distinct items
The dredging of an area in front of the caravan park to improve
accessibility and to improve the recreational value of the waterway.
The dredged material will be used to stabilise the beach front and to
fill sections of the caravan park.
Construction of a jetty/marina and associated shore facilities,
including parking, boat storage, fuelling, waste collection etc.
Stockpiling and sale of the dredged material not required for reclama-
tion/stabilization and fill (approximately 20,000 m3).
This Environmental Impact Statement establishes that there will be lono 0
term benefits from both sections of the development and that only minor
problems will occur durinp, the dredg,ing proces.s.
The major environmental. considerations are:
- Prevention of erosion of beach adjacent to banksias
- Destruction of seagrass beds
- Pollution from dredging, stockpiling and from marina operation 0
W. The report recommends procedures and measures which will effectively
control or eliminate these problems.
Stabilisation of foreshore adjacent to banksias using knowledge bained
from trial section of beach front which has remained stable for sot;ie
years.
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- Strict control of the dredging depths to establish flat areas which
can be replanted with seagrass. The final area of seagrass will
slightly exceed the existing area.
- The use of a suction dredge together with a protective screen
enclosure (if necessary) will effectively control turbidity during the
dredging process.
- The stockpile site is located and designed to allow effective control
and treatment oF the effluent.
- Full pollution control equipment will be provided at the marina.
There are sound economic, social and environmental reasons for proceeding
with the development.
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1 .2.0 INTRODUCTION.
2.1 Brief DescriDtion
The proposed development comprises two completly seperate and distinct
operations:
The dredging of approximately 40,000 cubic metres in Yamba Bay
adjacent to the Blue Dolphin Caravan Park, (see figure No. 5.)
The construction of a jetty/marina and associated shore facilities on
the western perimeter of portion 159.
The Maclean Shire Council will be the determin~ng authority for all
shore-based development and the Crown Lands Office will be the deter-
mining authority for all sections of the development within the
Clarence River (i.e. the area below M.H.W.M).
The dredging and jetty will therefore need to be approved as a Part V
activity whilst the sedimentation ponds, stockpiles, site filling,
parking facilities etc. will all be approved under Part IV of the
Environmental Planning and Assessment Act, 1979.
2.2 Location and Access
Portion 159 is located approximately 2 km west of Yamba and lies between
Yamba Road and Yamba Bay. The Blue Dolphin Caravan Park presently operates a
small. jetty and a number of moorings adjacent to the park and also has an
established access to Yamba Road.
Thus access is good for both terrestrial and aquatic developments. (See
figure No.1)
The main access channel to the Yamba boat harbour lies approximately 150
metres to the north-east of the caravan park foreshore. A number ot oyster
leases exist to the north-west of the park perimeter. (See figure No.3)
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2.3 Zonings and OwneL2L~
Portion 159 is presently developed for the Blue Dolphin Caravan Park and is
in private ownership. The terrestrial section of the development is covered
by the Reedy Creek Development Control Plan, which shows the majority of the
land zoned as 6(c) open space (special purposes which allows tourist
facilities as defined in the 1980 'Model Provisions), with a narrow strip
along Lhe foreshore bei iig z0fWd 6(d) 01W11 SJ)i1C(' (OX i~;t i 14',) (S L'L' t i
No.2).
The aquatic section of the development is un-zoned and is under the control
of the Lands Department.
Figure 2 shows the zoning of other surrounding land.
2.4 Present Usage
The Blue Dolphin Caravan Park is established over the whole of portion 159
and comprises a complex system of caravan sites, tent sites, amenity
buildings, kiosk and other facilities appropriate to a high standard caravan
park.
The major attraction of a caravan park in a location such as this is its
ready access to the waterways of the Clarence estuary and accordingly the
caravan park proprietor has established a jetty out into the bay and a number of
boat moorings. This jetty will be retained and its present: usaoe as a
mooring place for smalt f ishi ng ~-Ind J)LeZISUre, ci-af t. wi I I be CO11L illUed. A b0,1t
launching ramp is also provided.
Much of the original vegetation has been retained and has been enhanced by
the strategic planting of additional species suitable to the landscaping of a
caravan park of this nature.
A total of 170 caravan sites and 80 tent sites are provided and the park is
heavily booked throughout the year. It provides a valuable family holiday
centre.
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Photo I - - Existing Jetty,,ind Caravan Park.
2.5 Objec'Lives
Ct The proposed development is in two distinct and sepdrate, sectiolls. 'I'lle
objectives of the development must likewise be divided into two disLinct and
seperate sections.
a) Dredging and Stabilization of.Foreshore Vegetation.
To obtain a licence to dredge a small section of Yamba Bay.
To improve the amenity of the caravan park by creating a stable
sandy beach suitable for use by adults and children stayino at the
park.
To ensure the retention of the banksias and other foreshore
v(,j,,(,LijLio I i I)y 1-1)(I replaceIII(IIII ;111(1 ",Lilbi I izilt ioll ol, eroded 111,1tel-i'll
and the planting of suitable salt tolerent grasses.
iv) . To improve the existing boat mooring facilities by increas.ing
available water depth at low LL(Ie.
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To increase the ability of the environment to carry the increasing
number of persons utilising the caravan park by carrying out care- 0
fully designed modifications to improve stability and to confine
human usage to selected and prepared locations.
To utilise surplus material for the filling of selected areas of
the park.
b). Construction of Jetty and Shore-based Marina Facilities.
To secure a Crown tenure permitting the construction of the jetty.
To provide a strictly controlled facility for the private moorino
and storage of pleasure craft.
To improve the amenity of the caravan park by providing high
quality facilities for boat storage and mooring.
To provide facilities for the correct handling and control of
pollutants such as bilge waste, boat sewage etc.
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3.0 DETAILED DESCRIPTION OF PROPOSAL
3.1 Dredging and Associated Stabilization and Filling
3.1.1 Area to be Dredged and Options Considered
Considerable analysis was carried out before the area to be dredged was
finally specified. If the operation is to prove of benefit to the public in
general as well as to the caravan park operator, a number of factors must be
considered:
Improved usability of foreshore beaches.
Improved free swimming facilities adjacent to the caravan park.
Improved boat mooring facilities at the existing jetty.
Stabilization of foreshores to protect vegetation.
Photo 2. - Existing sand flats in front of park.
A number of alternative dredging patterns were considered and the two most
suitable alternatives are detailed on figure No. 4. Environmental,
operational, and economic factors were all examined in detail and the
dredging pattern and limits set out on figure No. 5 (Option 2) finally
adopted as the most suitable. In the final analysis it must be accepted that
the area is heavily used by tourists and fishermen and that the final profile
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after dredging must be able to accept these uses without inducing damage to
the environment or without suffering damage. The bottom profile shown on
figure No. 5 will prove to be stable under all normal conditions in this
area.
3.1.2 Dredge and Other Machinery
The material will be extracted by a barge-mounted suction dredge.
The use of a suction dredge will allow good depth control and will keep
turbidity and disturbance to a minimum.
Brief details of the dredging unit are as follows:
Powered by a 250 H.P. Cummins diesel driving a 200 x 150 mm sand and
gravel pump with a 150 mm delivery pipe system.
The dredge unit is equipped with a 6 metre ladder with a llydraUliC311Y
operated cutter to operate to a MLIX.LIIIUm depth of 5.2 metres.
Can operate in a minimum depth of 600 mm of water.
Will deliver between 30 and 60 cubic metres per hour.
The delivery pipe line from the barge to the shore can be lowered to the bed
of the bay to ensure the minimum of interference to pleasure craft and
fishing boats. Once the bank stabilization and site filling works have been
completed, any surplus material will be pumped to a selected stockpile site
where it will be de-watered in settling ponds and then removed by front-end
loader and trucks, (all. equ~pped w~Lli residenLial type InUff.'Iers).
3.1.3 Quantities to be Removed and Duration of Operation
The quantity of material to be removed is estimated at appproximately 40,000
cubic metres.
Because the pumping distances are relatively short, it is estimated that near
to maximum output can be maintained and the operation should not exceed four
and a half months in duration.
:3.1.4 E)a I I k SLabi I iZLiL.i 0 11 Li I I d Vwac I 1 1) i I i Ly
Some work has already been carried Out oil bank stabilization Lind a ,,- eCLi,XI of
approximately 75 inetres has rei,,iaineA sLable for some consi~derAle pei- Lud.
(See Photo No. 4). However Lhe Section of' bank adjacent to Lhe
suffered some undermining and erosion f l-olil storin waveS over roCelit- 111d
requires attention to ensure that the existingo trees, are not further
under-mined.
Photo 3. - Bank erosion adjacent to Bant-sia fringe.
Some of the dredged materIal will be used to bulld L11) Ole e%isLi[i~1 hillil, ill
this location. It wi.11 be filIcId tO a hei"'dit and slope which 11,1.,; proVOd t0 I't,
stable oil Lhe adjoininp, seCtion. The irej will Hion I)CI pkijiLk,'d With ,~IliL.Ihto
salt LolerenL ,',rasses (see secti.on 0.2.(i)) and closcLy %,.ZILCIIt.Id L,) CII,'~Wro
that stab~iliLy is achieved.
The section of beach to the west Of the j3anksias has been previously
stabilized and has remained in that state for some, time. Yho beICI sloi)e,
elevation and ve,;etaLlon types which Lire most suitable to achievin,; a !,u2I)Le
state on estuarine beaches riay change noticeably from one locLition to ",not'iier
and accordingly this test area has been used to evalulte SUAIble S-10pes- , 0 1
elevations and grass species for this location.
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These Slopes, elevations and VegeLation Lypes will be used in Lhe
establishment of a stable beach-front riht across the caravan park
foreshore.
Photo 4. - Stabilised section of exi.sting park foreshore.
3.1.5 Site Filling
As frequently happens in estuarine bays, the elevation alonq tile foreshore is 0
approximately 0.3 to 0.4 metres higher than some of the land to the south of
the foreshore. A number of depressions and low areas exist and some of the
dredged material will be uLilised to - fill these depressions and create a more
control- able and stable caravan park area.
3.1.6 Effluent and Effluent Control.
Several sedimentation ponds will be constructed generally within t.he Liro~i
shown on plan No. 5 and the dredged material will be pumped to these ponds
and allowed to settle and de-water before being removed by front-end loader
and trucks.
For the site filling works in some areas it will be possible to construct
bund walls around the areas to be filled and pump the dredged material
directly to the sites to be filled.
Photo 5. — View of area to be filled and levelled.
For the site filling areas surplus water will evaporate or filter out
naturally and there will be no pollution control works necessary.
For the sedimentation ponds and stockpile areas, smi.-1.11 quantities of wLAter
will filter through the surrounding banks. This fiLLraLe will be
substantially clarified and may be able to be returned to the river without
further treatment. If the turbidity level of the filtrate exceeds the limits
set by the State Pollution Control Commission then a secondary settlin.-
lagoon will be constructed so that floculant and settling aids can be added
to ensure acceptable clarity prior to release to the estuary. (See figure
5).
After treatment the final clarified effluent will discharge vil-I the existing
system of drains to the estuary. The total length of open drain before the
estuary is approximately 500 metres.
These drains are periodically flooded by saline water during high tides.
They accept storm runoff from the adjoining developed areas and are
periodically cleared by Council to maintain efficiency.
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The effluent from the settling ponds is not likely to alter the existing
environment of the drains to any significant extent. There will be no impact
on the surrounding vegetation.
The final effluent to Yamba Bay will thus be of an acceptable quality and
will not cause any pollution hazard to adjoining oyster leases or to those
persons using the area for recreational purposes.
3.1.7 Trucking Operations and Traffic Hovements
It is estimated that approximately 20,000 cubic metres of dredged material
will be needed to stabilize the beach front and to fill depressed areas
within the caravan park leaving approximately 20,000 cubic metres to be
disposed of by private sale.
Because the operation is only a short term one, it is estimated that the
removal of this surplus material. will be spread over a period or only about 2
to 3 months. This will generate between 10 to 20 trips per day giving a total
of 20 to 40 truck movements per day in and out of the stockpile site.
This will represent approximately 1.1% of the total traffic along Yamba road
which is estimated at 3,500 vehicles per day (AADT-based on 1982 figures for
Yamba Road at other locations nearby).
It is anticipated that large quantities of fill may be required for
development land immediately opposite in Yamba Road and A may be possible to
pump the dredged material direct to this site without the need to stockpile
within the caravan park area. tf this is possible then the need for Loading
and trucking operations would be completely elliminaLed.
Should it be necessary to load and truck material out of this site, both the
loader and the trucks will be equipped with residential type mufflers.
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3.1.8 Hours of Operation.
Hours of operation will. be conf i.ned to 7.00 a.m. to 5.00 p.m., Hondays to
Fridays and 7.00 a.m. to 12 noon on Saturdays. However, no dredging %,fill be
carried out on Sundays or Public or School Holidays.
Because the quantities of material to be removed are small and the
anticipated duration of the operation is short, every effort will be made to
gain the greatest possible output from the dredue and thus reduce the
duration of the operation as much as possible.
3.2 Marina and Associated Facilities
3.2.1 Location and Layout
Figure No. 7 shows the most likely location and layout of the jetty ~Ind
marina facilities, however, it should be emphasised that until such time Lis
detailed wave analyses and current measurements are carried out it is not
possible to finalise the details of the dosi-n. These measurements will be 0
carried out during the detailed design stage and negotiations will be held C.)
with the 11aritime Services Board and Public Works Department to ensure that
the detailed design is acceptable.
The jetty will be able to accommodate up to about 40 craft varying in size
f rom 3m to 8m, plus 3 to 4 vessels up to a bou L 10 or 15 met re.s.
In general the jetty will be of the floating type with a ramp to shore-based 0
fuelling and pollution control facilities. The construction of the jetty
will be carried out in stages oenerally as indicated on the attached figure
No.8.
A boat launching ramp will be constructed adjacent to the jetty,and parking
and storage facilities will generally be arranged as shown on fl~'Ure No. 7.
771
— W
vo
'4
Photo 6. - View norLh-west over proposed jetty Loc.,.it.ion
Lowards oyster leases.
3.2.2 Je LL y COI IS L rUCA i on an (I W,'I Ler-Wav A cce~;S
The jetty will be of tile floating, concrete-encased polysLyreno foam type arid
will be held firmly in position by piles. The floatin- platforms will rise 0
up and down with the tide level and will he connected to the shore by a
flexible walk-way. Fuellino and waste facilities will all be set up on the 0
rioid shore section to reduce the possibility of pollution from spilLa~,)e eLc. 0
A concrete boat ramp will be constructed LnimediaLely to the west. of Oic, _j(,LL),
access and will be available for the~ laUnchino Mid removal of boats. 0
The existing boat channel will he accessed from the jetty over abour. 60-i(Ju
metres of open water once the dredging is completed.
3.2.3 FU lling Facilities
Storage tanks will be located on dry Iand and fuelling facilities will be
established on the rigi(l silor(! ,;c~(Aion ()I* Lhe JeLty and will be equippod with
vacuum and specialized draina;.,,e faCAliLics LO eliminate tile L~kclihood oL'
pollution.
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The fuelling facilities will not be available to the general public but only
to those who are registered to use the marina facilities. This will
eliminate the likelihood of inexperienced users causing unnecessary
Ipollution.
3.2.4 Pump Ashore Facilities
Full vacuum pump ashore facilities will be provided and will allow the ready
and safe removal of bilge wastes, sewage and other possible estuarine
pollutants. Appropriate shore facilities will be available for the collection
of such pollutants and they will be disposed of by transport to an approved
disposal point under the control of the local authorities or direct to the
Council's sewerage system (if appropriate).
3.2.5 Pollution, Prevention and Control
The concentration of boats and fuell.ing faci.]-Lties etc., into one spot C~111
increase the likelihood of Pollution, however, the puitip ashore faciLit~e.--.
mentioned above will ensure that all boats, properly equipped, will. be able
to dispose of their effluents and pollutants in the proper manner.
3.2.6 Shore Based Facilities.
The shore based facilities will consist of a bitumen access roadway arld
parking area for cars and trailers together with storage facilities for the
long term storage of boats.
An amenities and store building will be constructed and will include toilet
facilities, fire-fighting equipment, pollution control equipment etc.
There will be no provision for servicin- of machinery nor boat buildino and
all such work will need to be carried out in properly constructed facilities
elsewhere.
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3.2.7 Storm Runoff and Control
The access roads, parking areas and storage facilities, will all be fully
scaled and properly 2rnded to ensure that storm run-oFf is collected in an
appropriate location and piped into the drainage disposal- system operated by
the Maclean Shire Council.
If required by the State Pollution Control Commission, a silt and oil trap
will be constructed in the line from the parking area to the Council's
drainage system.
Oil and silt collected in the pit will be removed an a regular basis and
disposed of to facilities operated by the Maclean Shire Council.
3.2.8 Landscaping
This will be the first such facility constructed in the Yamba area and it is
intended that landscaping play an important part in the establishment of the
facility. Appropriate trees, shrubs and planting areas will be constructed
and maintained at a high level. Attention will be given to the architectural
design and aesthetics of the entrance area, storage area, facilities and
jetty to ensure that they present an aesthetically pleasing appearance.
3.2.9 Noise and Dust Control
Any noise generated by users of the facilities will be of an intermittent
nature and thus will be no more disturbing than the background noise
presently generated by main road traffic and the marine traffic using the
boat channel within the harbour.
The whole area will be sealed and landscaped and dust is not expected to
cause any problems whatsoever.
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4.o J-:JAVf-I%'.ONME- fJTAI, CONIADLUATIOW;
4.1 The Existing Environment
4.1.1 The Man-Made EnvIronment
a). Development
Plan No. 2 show!; the peneral land zoni'lP, i" 010 vicillitY- 'I'l lere 'S a
L-11C 'Md .~Iliall piarcef- of. pr ~VaLu Land Lo Lhe WCLA 01
then there is a strip of Crown Land whiCh is zoned b(c) OPL"I sPacc
(Crown Land) - special purposes. This land is presenLl~, well veoetaLod
with casuarina and other estuarine 'species and will provide an
effective buffer between the marina/caravan park and the residential
development to the west.
The existing caravan park is extensively developed and provides a
complex of man-made facilities including a number of amenity
buildings, a swimming pool, boat launching ramp, jetty, landscaped
grounds, kiosk, service station etc.
Pt
--OM
Photo 7. - View east from existing jetty.
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Plotels and other tourist oriented facilities lie on the northern side
of Yamba Road to the east of the caravan park. Land to the south of
Yamba Road is developed for residential purposes.
Thus the entire area is already extensively developed for tourist and
residential purposes and the proposed development will he fully
compatible and quite acceptable in this environment.
b). Vehicufar Traffic
The Yamba Road is the main access from Maclean and the Pacific HiphWay
to the town area of Yamba and to AnOOUrie and the Lake 1,Jooloweyah
area. Present traffic volumes are of the order of 3,000 to 4,000
vehicles per day with heavy vehicles making up about 121-15,, - of the
total volume.
There are long term plans for the relocation of the main access road
to Yamba, however, it is unlikely that these plans wilL liive zin),
bearing on the present proposal.s.
I c). Aquatic Traffic
The main boat channel from Yamba harbour to the Clarence estuary
passes directly in front of the caravan park area just to the north-
east of the area proposed to be dredged. This channel is used
extensively by fishing boats and pleasure craft and is regularly
maintained by the Public Works Department and the 1"faritime Services
Board.
Navigation aids and bouys have been erecLed in and around tile mairl
channel and a number of jetties have been constructed to the east of
the proposed development and are used by members of the public for
access and boat moorings.
4.1.2 The Aquatic Environment
a). General
Yamba Bay is formed by the westward extension of Hickey and DarL
Islands from the southern headland of the Clarence River. Extensive
- 19 -
sand banks are found between the two islands so that navigation
between them is only possible at high tide. The main entrance to the
bay is from the western side of Dart Island.
b). Sediments
The construction of internal training works in the Clarence River has
resulted in the main channel no longer passing alono the Yamba 0
shoreline. This has lead to the accretion of sand shoals off the Yamba
foreshore and the formation of Dart and Hickey Islands. By 1940
Hickey Island had joined onto the Yamba foreshore, thus turning Yamba
Bay into a dead end.
The bay has since been infilling with sediment via its western
entrance. The sediment is mobilised in the main channel and carried in
but tidal velocities within the bay are such that the sediment
remains, and the bay acts as a sediment trap. Ill
The sediment type within Yamba Bay was analysed in 1977 Ill and showed
a gradual transition from clean sand near the fast moving waters on
the northern side of the two islands to sand mixed with fine material
in more tranquil waters. A sample taken 200 metres to the east of the
proposed dredging site was predominantly fine to meduim grained sand
with up to 40/1. silt/clay. In the area of the proposed dredging
indurated sand is found some 3 metres below bed level.
C). Aquatic Flora
Dart and Hickey Islands and the unnamed island adjacent to the site of
the proposal are fringed by mangroves (predominantly the Grey
Mangrove, Avicennia marina). 1.1anoroves also fringe the parts of the
bay to the west of the proposed dredge site. A few individual trees
extend along the southern shore into the PWD port area. Some evidence
of colonisation by mangrove seedlings exists on the mud flats near the
proposed site.
Aerial photographs from the early 1940's indicate a wide cover of sea-
grasses in Yamba Bay. This may have been related to good water
quality resulting from regular tidal flushing via the entrances to the
east of Hickey Island and to the west of Dart Island. As the eastern
entrance closed tidal movement diminsihed and this probably led to a
reduction in the area of seagrasses cover.
I - 20 -
Two main areas of seagrass beds are found in Yamba Bay at presenL (see
figure No.3). The main seagrass species is Zostera capricorni,
although some Halophila ovalis is present amongst the Zostera beds. A
major bed is found on the western and southern sides of Hickey Island;
the other main area is located near Dart Island adjacent to the bay
entrance. Less dense beds are found on the southern/wostern shore of
the Bay and these extend east to near the entrance to the PWD port.
The present day distribution of seagrasses is probably a function of
good tidal flushing and associated water quality as the main beds are
located near entrances to the bay.
The area of the proposal is located near the end of the beds on the
southern shore. The Zostera bed here is of moderate density (2012-50",0'
cover) and of relatively even distribution. The seagrass extends
between 0.22 m IPD (Iluka Port Datum) and -0.72 m IPD (i.e. approxi-
mately 0.2 m above ISLW to 0.7 m below ISLW) on the western side of
the site and on the eastern side extends to a depth of -0.12 IPD (0.1m
below ISL14). The distribution is probably limited on the seaward side
by depth and turbidity and resulting restriction in light penetration.
Landward distribution is probably limited by period of exposure at low
tide. In front of the caravan park the Zostera bed ranges in width
from 20 m to 50 m. A small sand/mud flat is exposed in front of the
caravan park at low tide.
I d). Aquatic Fauna
Benthic faunal samples were collected from the sea-rass beds and on
the intertidal mud flat in front of the caravan park in April, 1984.
Four 0.03 m 2 cores were taken from each site and washed through a one
mm sieve. Species were collected and their rankings in order of
numerical dominance are shown in Table 1.
The seagrass beds yielded a total of 10 species. Density of
individuals was 800 per m2. 'Phis habitat is dominated by the
burrowing bivalve Tellina deltoidalis. The gastropod Nassarius
burchardi, the amphipod Victoriopisa australiensis and the polychaete
Nlephtysaustraliensis were also common.
- 21 -
---------------------------------------------------------------------------
TABLE NO.I: BENTHIC FAUNAL SPECIES COLLECTED FROM STUDY AREA AND THE&
RANKING IN ORDER OF NUMERICAL DOMINANCE
-------------------------------
Dominance Rankin,~ ;pecies
Seagrass Mudflat
Molluscs
Tellina deltoidalis I I
Nassarius burchardi 2 4
Velacumantus australis 4 -
Pyrazus ebeniDUS 9
Sanguinolaria donacioides - 3
Worms
Branchiomma migromaculata 6 -
Nephtys australiensis 4 -
Australonereis ehrlesi - 2
Leitoscoloplos normalis - 4
Nemertean 6
Crustacea
Victoriopisa australiensis 2
Callinanassa australiensis 6 -
Fish
Gobiidae 9 0
Recent studies in the Oyster Channel region of the Clarence Estuary[2 ]
indicated a similar faunal composition for the seagrass beds located
there.
The intertidal mud flat yielded fewer species (five) and individuals
(less than 200 per m2). The dominant species was again Tellina
deltoidalis but all of the specimens collected were juveniles. A
species not collected in the cores but very common on the mud flat was
Lhe ghost nipper, or yabbie Callianassa australiensis. Yabbie holes
were abundant and yabbie pumps are frequently used there by
recreational fishermen.
- 22 -
In the high intertidal area the soldier crab Mictyris Iongicarpus is -- C,
found. These are much more abundant, however, on the small island op-
posite the caravan park and in other areas less disturbed by people.
Comparisons with other estuarine studies suggest that, in general, the C,
species present and their number and abundance per unit area are
typical of other NSW estuarine systems.
No fish or prawn surveys were made for this study. Recent Studies in
the Clarence River 131
and in other NSW estuaries [4]
have indicated the
value of seagrass beds as nursery areas for commercial fish species
such as mullet (Hugil cephalus), yellowfin bream (Acanthopagrus
australis) and sand whiting (Sillago ciliata). The Clarence River is
the main commercial prawnin- estuary on the NSW coast and uvenile
prawns, particularly King (Penaeus plebejus) and School (Metapenaeus
macleayi.) prawns, are found in the seagrass beds of the estuary 13]
Non commercial fish species such as perchelet (Velambassis
jacksoniensis) and various goby species have also been found in
seagrass beds in the Clarence River [3]
and are likely to be present in
Yamba Bay. An unidentified juvenile goby was taken in the benthic
samples.
Some limited commercial fishing is done in Yamba Bay. Occasional Mesh
netting in the region of the proposal produces catches of mullet,
whiting, and bream. The area is, however, not an established
commercial fishing around. Recreational fishing is done either from 0
boats near the channel or from jetties and the beach at high tide. The
most commonly caught species are yellowfin bream and clusIcy flathead
(Platycephalus fuscus). These are taken from the shallows in front of
the caravan park, particularly from the sand/mud flat at hi0h tide at
night as the fish come in with the tide to feed.
Oyster farming is carried out in Yamba Bay.which is regarded as an
important oyster orowing area. Leases occur on the south-western shore 0
of the bay, to the west of the proposed dredgin- site. 0
- 23 -
e).
I
Hydrology and Flooding
Yamba Bay forms a back-water area of the Clarence estuary and since
the construction of the half-tide wall along the main river channet,
in 1903, tidal and flood velocities in the vici.nity of the proposed
development have been reduced to almost zero.
Figure No. I shows the proposed dredging site in relation to Yamba Bay
and the Clarence estuary. The Public Works Department have advised
that the I in 100 year flood level at this site is approximately 2.7 m
(IPD), which is approximately 0.15m above the existing ground levels.
Thus some flooding does occur on the site during major flood events.
LEVELS REDUCED TO TLUKA PORT DATUM
BEFORE' CONSTRUCTION ] AFTER CONSTRUCTION
------------------- ----------------------
Indian Spring Low Water
Indian Spring High Water
Mean Low Water (Springs)
Mean High Water (Springs)
Shore "levy"
Stockpile site
Settling ponds
Marina
Yamba Road
100 year flood level
50 year flood level
20 year flood level
0.10
1.75
0.35
1.45
2.2 to 2.9
2.5
2.5
2.4 to 2.9
2.7
2.72
2.70
2.65
0. 10
1.75
0.35
1.45
2.2 to 2.9
2.7
2.7
2.7 floating
2.7
2.72
2.70
2.65
Because of the back-water nature of the area and the low flow
velocities, there has been very little damage during periods of
inundation and high flood.
- 24 -
The limits of the tidal plain both before and after construction are
clearly shown of Figure No.7.
There is no Lide recording sLaLion at the site, however, detailed
information for the estuary is available from the Public Works Depart-
menL (Clarence River Waterway Planning Study, (1978), and tidal
records).
Table No. 2 above sets out the KporLant levels applicable to the
operation.
4.1.3 Terrestrial Environment
Terrestrial Flora and Fauna
The area of the caravan park fringing the proposed dredged site
consists of a row of coast Banksia (Banksia integrifolia) trees with
some large Black Wattle (Acacia melanoxylon) on the eastern side of
the jetty. Sydney Golden Wattles (Acaci a longifolia) are also found
amongst the Banksias. Parts of the line of Coast Banksias on the
eastern side of the site are being undercut by high tides and the
trees are in danger of falling over. Ground cover consists of
introduced grasses such as kikuyu, couch and buffalo. Native species
such as saltwater couch (Sporobolus virginicus) (a common saltmarsh
species) and Zoysia macrantha are also present. Both of these species
are salt tolerant (as are the innoduced species) and areas on the
western side of the site where some sand and grading appears to have
been carried out in the past have been colonised by these species.
This bank appears stable and the line of trees is in no danger in this
area. Undeveloped areas to the west of the caravan park consist of a
Coast Banksia/Swamp Paperbark (Helaleuca quinquenervia)/Swamp She-oak
(Casuarina glauca) dominated woodland with an undersLorey of species
such as Acacia longifolia. Bitou Bush (Chrysanthemoides monilifera)
has invaded in a number of places.
25 -
The area of the caravan site has been cleared and the vecyetation
consists of trees left after clearing (Casuarina glauca and 11-ielaleuca
quinquenervia) and a number of planted natives and exotics. Ground
cover is by introduced grasses, predominantly couch.
No bird studies were carried out. The sand flat habitat in front of
the caravan park is suitable for wading birds although muddier, more
expansive areas are preferred. No species were noted during the site
inspection. Waders have been recorded in the area, particularly on the
exposed flats adjacent to Dart Island 151,
but high recreational
activity means that the area in front of the caravan park is little
used by birds.
4.1.4 The Social and Economic Environment
The Clarence estuary is one of the most important estuaries on the New South
Wales coast and supports an active fishing and prawning industry. A laroe 0 C,
number of commercial fishing boats operate from both Iluka and from Yamba and
contribute substantially to the economy of the area.
In recent years the importance of Yamba and the Clarence estuary as a tourist
destination has increased substantially and in 1983 work commenced on the
construction of a major tourist complex adjacent to Oyster Channel. This
complex is estimated to accomodate up to 3,000 persons at any one time and
would have a substantial impact on the area and will tend to confirm Yamba's
importance as a tourist destination.
The New South Wales State Government has for some time now promoted the
development of a major tourist resort on Lake Wooloweyah to the south of
Yamba and this likewise will confirm Yamba's importance as a tourist
destination when it proceeds.
Thus commercial fishing and tourism both contribute heavily to the economic
and social basis of the Yamba area.
Population figures for the Yamba area indicate a growth rate of 6.5'-' to 9.0~~'
per annum over recent years. A number of residential estates and keys
estates have developed to accomodate this increase in population.
- 26 -
The proposed faciliLies will improve the amenity of the area for commercial
fishermen and especially for the tourist trade.
4.2 Environmental Impact and Interactions.
4.2.1 Dredging, Bank Stabilization and Filling
a) General Impacts of Dredging in Estuaries 0
Morton ] reviewed the physical and biological effects of dredoino in (6 estuaries.
The possible physical effects are:
short—term increase in turbidity caused by the suspension of
sediments. This results in reduced light penetration and the
transport of fine muds to other areas;
change in bottom topography which can, in turn, alter the
I hydrological regime; and
change in sediment properties by exposure of underlying 1 0 sediments, or the deposition of suspended matter from other
areas due to changes in circulation patterns.
IThe possible biological consequences of dredgidng are:
i. Loss of benthic flora, particularly seagrass beds. Sea-rasses
supply habitat for benthic and fish fauna[7] particularly
nursery areas for commercially important fish 101
They are zilso
highly productive suppliers of or.anic material in estuaries.
This organic material (~~etrit_us ultimately becomes an
important link in estuarine food chains.
z7 -
Loss of benthic fauna. As well as fauna associated with
benthic flora, fauna in unvegetated habitats would be removed
with the sediments. As open bare area are used as feeding
habitat by fish, a net reduction in food availability would
result until recolonisation by fauna occurred.
Increase in depth and turbidity. The deepening of estuarine
waterways below the euphotic level or an increase in turbidity
reducing 1 ght penetration can result in lack of recolonisation
or growth by seagrasses and algae. This would presumably affect
primary production, although Morton 191 C
ites instances of inter-
ference with photosynthesis due to sediment resuspension bein,,,,
offset by the stimulation of photosynthesis as nutrients were
mobilised from the sediment and made available for
phytoplankton uptake.
It is also important to note that dredgino in the beds of
estuaries may establish conditions that could result in poor
mixing of bottom and surface water. This could ultimately lead
to deoxygenation and loss of benthic fauna and flora. The
resuspension of silt during dred-ing can also affect benthic
fauna that have specific sediment requirements. Because of the
nature of their filter feeding and settling mechanisms, some
species are unable to tolerate high levels of silt in the water
column.
b) Impacts of proposed dredgino on Aquatic Environment
Two options were considered for the proposed dredging (Figure No.4):
Option 1:
The removal of 40,000 m3 of sediment, the -1.70 m IPD contour being
extended into the existin- 0.60 m contour on the western side of the
site, to the existing 0.25 111 contour in the centre and to the existing
-0.11 m contour on the eastern side of the site near the present
jetty. On the eastern and central part of the site a 1:7 slope will
then extend up to a level of -1.0 m IPD, thereafter up to -0.2 m IPD
and then by 1:7 slope up to M11W.
- 28
These new contours will allow large boats to have access to the pro-
posed new marina on the western side of the site and smaller boats
access to the existing jetty on the eastern side.
Option 2:
As for Option 1 except that on the eastern and central part of the
site the 1:7 slope will extend up to level of -0.6 m IPD, and there-
after up to -0.2 and thence up to MMfiq. This will mean that slightly
smaller boats than in Option I will gain access to the exi,,;Lln~,, -jetty.
Impact of Option I
Option I would result in the removal of approximately 0.('-) lia. of
seagrass beds. This represents about 3% of the seagrass in Yamba Bay
(20 Ha) and much less than 1Z of theseagrasses of the Clarence
Estuary (156 Ila).
The seagrass to be removed has only recently been found in any density
in that area. Aerial photographs taken in 1971 and 1978 show no
apparent seagrasses in or near the proposed dredging site. 711ore 0
recent photographs from July 1981 and July 1982 show sea-rass ol 0
current density up to the western end of the proposed dredging area.
Within the proposed dredging area the seagrasses were patchy and were
non existent beyond the existing jetty. It is only recently that the
beds in the proposed dredging area have become more dense and have
extended to their present distribution. This spread is probably
related to seagrass preference for areas of good water quality and low
turbidity. The main entrance and the shallow channel between Dart and
Hickey Islands provide good quality marine water to parts of the bay
and the sea,,rass spread is possibly in response to this.
The vegetative growth of seagrasses into the area in recent years
suggesots that, as long as appropriate conditions of clear and good
quality water with high salinity are created, recolonisation of some
dredged areas by seagrasses should occur. b
- 29 -
Seagrass distribution is restricted at present betweeen 0.2 m IPD and
—0.7m IPD, the lower distribution resultin- from the effects of
turbidity. For this reason, the area at present covered by seagrass,
is unlikely to be recolonised due to its proposed depth (-1.7 m 1PD).
The regrading of the mud flat in front of the caravan park to —0.2 m
IPD, however, will provide appropriate depth and slope for colonisa—
tion, the total suitable area being approximately 0.2 Ila. The habitat
that remai-ns after dredging witl be predom[nantaly f ine to med i Lim
grain sands with some mud and this is suitable for Zostera growth. 0
The spread of Zostera can be facilitated by transplanting and this is
discussed below.
Recolonisation of the unveoetated substrate by benthic in—fauna should 0
occur reasonably quickly (over a period of perhaps 12 months) as the
tidal flushing in Yamba Bay is adequate (with a tidal prism of about 0
30% of the total mean enclosed water 1101
to ensure good water quality.
This recolonisation would be a result of migration from adjacent
seagrass beds and by settlement from the plankton. The diversity and
abundance would not be as great as that found in the previously
vegetated habitats, but as seagrass spreads into the area this should
improve.
It is possible that the water quality within parts of Yamba Bay may be
reduced if the channel between Dart and Hickey Islands closes
completely. This may in turn affect the viabilit of the seagrasses y 0
and their associated fauna.
Impact of Option 2
Option 2, will, as in Option 1, result in the loss of 0.6 Ila of
seagrass beds. The area adjacent to the proposed marinas would be
—1.70 m IPD, however, the central and western areas would be sloped
(0.6 m IPD up to — 2 m IPD) to allow both sufficient depth for small
boat access and the possible regrowth of sea-rasses. Althou-h 0.6 Ila 0 0
of seagrass would be removed, the slope would be created to allow the
potential regrowth of about 0.7 11'a in the central and western areas.
I - 30 -
Given the areas of seagrass involved in the dredoing process, it is
unlikely that either of the options would have a significant impact on
commercial fisheries, even on the local scale of Yai',iba Bay. However,
the opportunity for extensive recolonisation in the central and
eastern areas suggests Option 2 should be most favourably considered,
even thouph smaller boats than in Option I would be able to use the
area.
Under the appropriate conditions, i.e. stable substrate, depth between
0.2 and -0.7 m IPD and good water quality, it is reasonable to presume
that recolonisation by Zostera capricorni into dredged areas will
occur over a period of a few years. Observations in other NSW
estuaries [1 o
fnd at the present site have shown Zostera to readily
colonise adjacent areas. The deeper areas below about -0.7 1:1 IPD are
unlikely to be recolonised due to the high existing turbidity
precludin- light penetration. 0
Option 2 has been adopted because of the increased area which can be
re-colonised by seagrass.
RestoraLi.on of Seagrasses
Regrowth of sea-rasses will be facilitated by transplantin- them into 0 0
the dredged areas. Attempts at transplanting seagrasses have been
tried on a very limited scale in NSW [11].
The most useful technique
requires the plants to be removed in-situ in undisturbed sediment,
placed into trays or bags and relocated into excavated holes at the
new site. It is proposed that this technique be adopted as a means of
seagrass restoration by the applicant. Any transplanting will be done
under the supervision of officers from Fisheries Division, Department
of Agriculture.
I Dredging Process
The dredge to be used for this area is a barge mounted suction dredge
capable of extracting up to 60 m per hour. The dredging operation
will therefore last about /i months.
- 31. -
The extent of the turbid plume generated from the dredge head is
primarily a function of the dredging method, the textured character-
stics of the dredge sediment and the flow parameters. It was
estimated [12]
that a turbidity increase of twice present levels would
result within a radius of 100 m of a dredge site in Oyster Channel,
and it is anticipated that similar conditions would apply in this
proposal. This will cause a reduction in light penetration in the
immediate vicinity of the dredge for a period of about 4 monLhs. This
may affect adjacent seagrass beds during this period, but as dredgi.n,,',
will occcur during winter, a period of very low growth, the effects
should not be great.
The dredging operation will be more than 50 m from adjacent oyster
leases as required by the Fisheries Division, Department of
Agriculture.
Impacts of the Proposed Dredging on Hydrology and Floodiny
Nearly the entire area to be dredged is below tide level with only
approximately 7,000 cubic metres to be removed from the inter-tidal
zone. The tidal prism for the Clarence estuary is estimated at 50
million cubic metres 04]
for a spring tide and thus the increase in
tidal prison caused by this project will be negligible.
Because the area to be dredged lies in a back-water where flood flows
are negligible the impact on flooding and flood hydrology will
likewise be negligible. The operation will not be likely to change or
influence flood patterns or flows in any way.
Changes in Sediment, Transport and Siltation
Investigations carried out by the Public Works Department have
indicated that substantial changes have occurred in the sediment and
shoaling patterns within Yamba Bay over the years. The pattern of
deposition of both fluvial and marine sands was strongly influenced by
the construction of the half-tide wall along the main river channel.
Since the completion of that channel the rate of in-fill of Yamba Bay
has quite noticeably increased in the vicinity of Hickey and Dart
Islands.
- 32 -
In recent years, since the marked development of Hickey and Dart
Islands, there has been very little -if ally depoSiLioll ill the tll'ell
adjacent to the Caravan Park. Some works were carrLed out adjacent to
the Caravan Park in 1981 and at that time a dozer became bo-ged in the
inter-tidal zone, immediately in front of the caravan park. The marks
left by that I-ilachine are stJ 1 -1 clearly evk1ent Lodly indicilt ili~', t'llit
deposition in that period has been ne-li-ible. 0 0
Since the development of Hickey and Dart Islands, tidal flows within
this area are neoligible with the tide simply risin- and fallin-. 0 Z~ 0
Thus the excavation of material from the su--ested location will not 00
change the rate or pattern of deposition of sediments.
e) Bank Stabilisation
'File a rea a djacent: to some exi.sti_n~, Banl~sin [nLe~,,ri to I ia t ree,,; i,, h ei ii~,,
undercut, during high LWes. (See photo 3). I-L i.; J)1_0J)0.';C'd LO bUiLd Up
the einbankment to stabilise this area with sand extracted from the
dredging. This species of Banksia is commonly found Ln s~lndy coastaL 0 -
habitats and is quite capable of toleratin- these conditions. 'Care 0
will be taken to ensure that the sand is properly placed around the
base of the trees.
The total quantity of fill to be placed along the beach front is
estimated at less than 1,500 m3 and the duration of the section of tile
operation will only be about I week. Any increase in turbidity for
this short period is not likely to cause any damage or dan-er to the 0
nearest oyster leases which are some 300 to 400 metres away. Oysters
are quite able to tolerate normal flood events - which are accompanied
by very high turbidity levels - without any ill effects.
The fill will be finished to a maximum banter of 1 vertical to 7
horizontal and the area above i,H-N planted with couch runners.
The batter of 1:7 has proved extremely stable on the adjoinin~,, trial
.;ectioll.
- :33 -
Photo 8. - Frin-ing banksias create pleasant environment 0
and should be protected.
The area in the central part of the caravan park frontj.,e has been
sand-nourished in the past and has remained stable. This has been
aided by colonisation by native and introduced orasses. These wiLl be 0
encouraged to grow in the area of proposed nourishment. In parLiculai-
the introduced couch grass -rows well there and will be fostered usin:,
both runners and seed.
In the intertidal area some colonisation by mangrove seedlincls has
occurred. The transplantin- of - seedlings into appropriate areas oil b [13] the western and eastern sides of tile site to assist in stabilisation
is recommended. This would be carried out under tile direction of
officers from the Fisheries DivLsioii, DepartmeniL of Ar~culture.
Settling Ponds
The area proposed for the settling ponds is on disturbed land now used
for caravan sites and, as such, does not present- an impacL o[I U110
natural environment.
- 34 -
Photo 9. - View over stockpile site towards Yamba Road.
Water discharge will be via the drain near Portion L60. The increase
in water flow will be minimal compared with the normal stornwater flow
along this course and for this reason there should be no noticeable
effect on the flora and fauna adjacent to the discharge.
a) Visual Impact
The actual operation of dredging and sedimentation and the associated
shore works will have a visual impact, however with a duration of
approximately 4 months the long term effect is nil.
The establishment of a stable beach front at a slope of approximately
I vertical to 7 horizontal will produce a pleasing foroshore visual
impact.
h). Noise Impact
A noise impact statement has been prepared by H.K. Clarke
Associates, and is attached as annexure "C".
The statement establishes that, provided the loader is fitted with a
residential type muffler, the noise level at the nearest residences
will be at an acceptable level and no justifiable complaim rv1aLin,,,,
to noise should result.
The construction of the jetty will take approximately 4 to 6 week-s in
total and the only possible noise source will be the jettiiv, of the 11
piles. This will involve approxim,,itoly 1 weeks work for a compressor
(screw I.ype) 'ind wi I I noL lead h) ~111Y JLUA i I I,IbIC ('01111d,11111 Lk'i,l( L11,.
to noise.
i). Cumulative Effect
I,Iuch of the Yamba Bay and boat harbour area has been extensively
developed for aquatic traffic and has been dredoed on a number of 0
occasions. Recent dredgin- has been carried out for the boat harbour 0
construction to the east and a licence has been issued for the removal
of approximately 200,000 cubic metres of sand around the Dart Island
section of the main boat channel.
Photo 10. — View from end of existing jetty towards boat harbOUr. 0
The drednin- area covered by this proposal, together with a further 0 0
small section to the east will, when completed, combine to producc a
beneficial impact for boats using the Yamba harbour. 0
36 -
Impact on Terrestrial Flora and Fauna.
Some of the dredged material will be used to replace eroded material
adjacent to the existing Banksias and other foreshore vegetation along 0 11 1~
the caravan park foreshore. This wi I I ~issl,-;L in ensuriii,,, th'It thi:;
vegetation is retained and will thus produce a beneficial impact. 0 1
The areas of the park to be filled have been carefully selected so
that minimal damage will occur to the existin- established trees. Thus
it will only be necessary to re-establish the~'orasscs and pround cover
species.
The impact of the site filling works will thus be uiLnimal. nnd in tho
long term will be beneficial.
The establishment of settling ponds will have a substantial impact on
the environment for the duration of the dredging operation. However
once the sand is removed from the site and the area rehabilitated it
will be returned to its existing status. Thus the long term impacts
of the settling ponds and stockpile site will be nil.
The long terin beneficial impacts of the proposal are considerably
greater than the short term problems.
I k). Vehicular Access and Traffic
Yamba Road already carries a heavy traffic volume with a large
proportion of heavy vehicles and the traffic which will be generated
by the transport of sand from this operation will represent only
of the total traffic carried by Yamba Road. As the duration is only
likely to be approximately for 4 months the impact on traf f Lc using
Yamba Road and on the surrounding area will be negligible.
1 4.2.2 Jetty, Marina and Associated Shore Facilities
I a). Effects of Marine Traffic
The Blue Dolphin Caravan Park operates a fleet of small hire boats and
canoes. These, together with other pleasure craft and commercial
fishin- boats generate heavy marine traffic alono the established boat 0 0
channel in front of the park.
. - J.'" ,
Photo 11. - Existing jetty. Note moorin- exposed at low tide. 0 0
The construction of the jetty and other facilities will Lncrease
marine traffic in the area by a small amount but will not creat-e co[i-
jestion nor reduce the ameni.Ly of the existin- navinaLion channel. 0 0
A four knot speed limit presently applies between the main boat
channel and the shore and will ensure that wave action caused by boats
will be kept to an acceptable level.
Once the shores are stabilised and planted with salt tolerant grasses CD
as specified in section 4.2.1 (e) above, the area will be able to
accomodate the increased traffic without damage.
b). Effects of Shore Traffic
It is estimated that stage I of the construction of the jetty and the
marina will provide for approximately 40 vessels, either moored at the
jetty or in dry storage. Traffic generation from these boats is
difficult to estimate, however, it is assumed that traffic volumes in
and out of the facility will not exceed an average of 15 to 20
movements per day with a peak period OCCUrin- at weekends and durLli~',
holiday periods.
38 -
The majority of vehicles moving in and out of the developnent will be
light vehicles.
Because such vehicles would no doubt have launched their boats
elsewhere if this facility were not available, the actual increase in
traffic volumes along the Yamba Road is unlikely to be as oreat as the
number of vehicles moving in and out of the facility. Thus it is
estimated that tile impact of shore traffic will be neglioible and will
be less than 1% of the present traffic volumes alon- Yamba Road.
C). Effects on Marine Ecology. 0
1-iarina Location and Construction.
n It is proposed to construct a new L-shaped floating marina on the
western side of the caravan park. As discussed above, the area will
be dredged. However, the final. depth of waters around the marina zind
probable shading by the structure and boats will preclude any seagrass
growth in the dredged areas.
The speed of boat traffic should be regulated to the present 4 knots
to ensure minimal disturbance to existing seagrass beds and to tile
embankment.
Bilge and sewage pump-out, and fuel pump facilities will be supplied
on shore behind the marina. I-Jastes will be disposed of elsewhere so
the only discharge into the water will be in the event of an accident. 0
Appropriate equipment such as a boom will be provided to enable prompt
action to be taken in the event of a petrol spill into the water.
The problems of leaching oil and petrol into the water from outboard
engines will still occur, but existing tidal water movements witilin
the bay would be able to cope with this. This ma chanoe in the long y 0 0
term if the channel between Dart and Hickey TsLand closes and only one
entrance remains open.
- 39 -
Pollution and Polluti.on ConLroL
The facilities to be provided for the collection and control of
pollution at the site have been elaborated in section 3.21. Once Lhese
facilities are constructed and made available there will be no
difficulty in controlling any pollution or potential pollution.
Site Filling.
Some site filling of the area will be necessary to ensure that
drainage is adequately controlled, however, such filling will be fully
stabilized and will have ne-li-ible effect on the environment. 0 0
Visual Impact.
The construction of a jetty within the estuary will have a substantial
visual impact but because of the developed nature of the environment
and because of the social and recreational desires of the population,
the visual impact will be acceptable and pleasin-. 0
The shore based facilities, once properly landscaped and established
with trees, shrubs, oardens etc., will produce a pleasino vista.
0 g). Noise Impact
There will be some intermittent noise generated by vehicular traffic,
launching boats, parking etc, and by boats arriving at and departing
from the jetty, however, being of an intermittent nature ~L will have
very little impact on the surrounding development. Normal attenuation
and the shieldino effect of the ve-etation to the urest will reduce the
noise levels to an acceptable level for the development to the west
and the nature of the caravan park means that it is already subject to
intermittent noise of cars and caravans arriving, settin- up and
departin-. Thus the establishment of the jetty and associated shore
based facilities will produce very little change to the existin- noise
environment of the vicinity. (See annexure 1IM11)
- 40 -
h). Flooding and Hydrology.
Although much of the surroundi-n~,, area is inundated durin,(., miJor I-lood
events, the depths are generally less than 0.3m zlild Lhe vet.oc.[Lies are
very low.
The development will not obstruct flood flows nor cause any increnso
to the flood liab:iliLy of any surrounding lands.
4.2.3 Economic and Social Impacts.
Almost the entire area remainino for development around Yan.ba requires
extensive quantities of fill anod continues to place considerable stress on
tile sand supply industry.
The dredging and removal of even tile small quantities of sand involved froim
this location will assist in the development of the general Yamba area by
providing a cheap source of fill.
Because much of Yamba's economy and -rowth potential is dependent upon its
tourist attraction and tourist facilities, it is important that hi-h quality
facilities are developed for the controlled access of the public and tourists
to the estuary. The proposed jetty and marina will improve the accessnbilir-y
and provide -ood control for many of the laroer boats i-.,hich use the estuary. 0 0
The jetty will not inhibit public uLilisation of the foroshore aild ped('~;trinri
access around it will be unobstructed.
In short, the social and economic nature of Yamba requires that such
facilities be made available and the proposal will provide a high quality 0
facility in an acceptable location with minimal environmental impact.
4.3 Archaeological Sites
Consultations have been held with the NIaLional Parks and k,!ildlife Service who
have not advised of the existence of any known aboriginal or archaeological
siLes within tile viCinity.
- 41 -
Should any relics be uncovered durin- the dredping operation or durin~; the
constrUCtiOII Of the mariiia, Own worl~ wou-[d ccat;e immedi.al-(Ay wiLi I ~I;uch Lime,
as the National Parks and Wildlife Service can properly assess the ii,.iportance
of such finds and grant approvai for work to proceed or miil~e arraivlctlieliLs to
terminate activities.
I — /12
1 5.0 JUSTIFICATIO14 5.1 Dredging and Bank Stabili.zation I b
a). Boat Access.
The site to be dred-ed lies between the main boat channel and the Blue b
Dolphin Caravan Park. It is traversed frequently by pleasure craft
and private fishing boats from the caravan park and other shore access
points.
The present wide sand flat causes considerable inconvenience to boat
owners arid the passage of boats over the area (in shallow water)
causes damage, to the benthic flora arid fauna.
As boat usage increases in the area it is probable that such dar-na:~e
will be so frequent and so severe as to severely ii:ipede the natural
re-encration processes. The result will be a depletion of benthic 0 flora and fauna in that area.
The proposed dredging will cause short term dama-o but the finziL
profile will be stable and will not- be subject to frequeliL damat,'(, by power boats etc.
Once the benthic fauna have re—coloured the area arid the transplanted
sea—grass is established the dredged area will be better able to 0 ID
accommodate the heavy marina traffic.
The final profile will allow easier access from the caravan park to
the water ways of the estuary.
I b). Control of Lank Erosion.
Because flow velocities in the area are almost nil, the major erosion
agent is wave action during high tide and storm periods. This has con—
tributed to the under—i-,iininE of the existing bank vegetation which is
of considerable value to the caravan park for shade and to the general
public in providi-no a pleasin- foreshore appearance from the harbour
and estuary. Thus its retention is of some considerable importance and
the works proposed will produce an extremely beneficial result for the
community at large.
- 11,3 -
C). Recreational Benefits
Since the construction of the Yamba boat harbour, the inaritii-,ie traffic
through the boat channel has increased and sonic- difficulties have been
experienced with larger boats fouling the bottom adjacent to the
caravan park. The proposed dredging will increase the amount of deep
water in the channel and will improve the moorino facilities which
exist adjacent to the caravan park and along the jetty.
z=Z
AW
;-"40L- ~~A, 41
Photo 12. - Existing sand flats. Note dra- marks caused 0
by fishing boats being dragned across flats. 0
Recreational access to the water-ways from the caravan park Lire of
considerable importance for the success and economy of the Yamba area
as a whole and thus the proposed dredgin- will have a beneficiaL
impact.
- 44 -
5.2 Marina and Jetties.
Existing Boat Storage Facilities
Existing boat storage facilities within Yamba are extremely limited
(only 45 private and 15 commercial registered moorings in the whole 0
Clarence, June, 1984), with no facility yet being established with
adequate facilities to control or accept the wastes or pollutants from
pleasure craft.
Some jetty facilities exist at both Iluka. and Yamba harbour, however
these are occupied almost exclusively by the commercial fishing fleets 0
of the area. Thus the construction of the proposed marina and 'jetty
is long over due and will produce a welcome change in the present, 0
extremely haphazard and uncontrolled system of boat stora(7e in the
Yamba area.
The only other approved marina (not yet constructed) is for 60 berths
at Wandering Star. These berths will be operated as part of the
Wanderin- Star Resort Complex and will not conflict with the Blue
Dolphin proposal.
Public Response to Proposal
A low-key market survey was carried out amonost boat owners and local
residents to assess public response to the proposal. The results of
this survey indicate that there is 000d local acceptance and a real
demand for a quality mooring location equiped with fuel facilities and
operated on a strictly controlled basis.
There is a considerable number of private pleasure craft travelling
the east coast of Australia but very few locations where they can
berth safely.
The almost immediate filling of the marina recetly constructed at
Coffs Harbour is a strong indication of the demand for, and accute
shortage of, such facilities.
- 45 -
c). Shire Growth - Holiday Destination
As mentioned previously, the Yamba area has achieved a growth rate of
approximately 9'Z' p.a. over recenL years.
This high growth rate coupled with the very marked development of
major tourist attractions and accomodation facilities has set the
stage for a marked increase in the importance of Yamba as a major
tourist and holiday destination.
The Clarence estuary is one of the largest on the east coast of
Australia and its rapid development requires that properly designed
and constructed facilities be provided to ensure minimal environmental
conflicts.
The marina and share facilities will be the first of their type in the
Yamba area and when properly established will set a standard which
gives due recognition to the environmental stability of the estuary.
5.3 Alternatives Considered.
The proposed developments are both designed to improve the amenity of the
caravan park and associated foreshore.
It was therefore not appropriate to consider any alternative locations.
Very careful consideration was given to the areas and depths to be dred,,ed
and a number of alternatives were considered. Most were rejected because
they would impede free navigation from either the existing jetty or the
proposed jetty.
The two most appropriate dred-in- patterns are discussed in section 4.2.1(b). 1 0 0
The scheme adopted and shown in detail on figure No.5 was selected because it
allows good navigation; ensures adequate access to both jetties, and will
allow for the rehabilitation of a larger area of seagrass than presently
exists.
- 46 -
.6.0 REQUIRE1,1ENTS OF GOVERNHEINT DEPARTNE-NTS AND AUTHORITI'ES.
6.1 Department of Environment and Planning.
Sections of the development Constitute Designated Development, and CD
accordinoly the Department was approached for a specification for the 0
preparation of this Study. The response was in two sections:
A letter and specification of the 14th December, 198-3), addressed
the matters associated with the dred,,in-; and 0 ~,
a letter and an associated specification dated the -5th April,
1984, addressed the matters to be considered in relat.ion Lo Lllie
jetty and marina.
I TT" I T These requirements are set out in annexures "A" and 1j .
6.2 Other Departments.
The following Departments were contacted and requested to advise their 0
requirements for the study and comments on the proposal:
Department of Environment and Planning, (Annexure "A" and
Lands Office, (Annexure TIC");
Department of Mineral 'Resources, (Annexure I'D");
Department of A-riculture - Fisheries branch, (Annexure "E")
11aritime Services Board, (Annexure 111"It) ;
Public Uorks Department, (Annexure "G") ;
State Pollution Control Commission, (Annexure "W');
Soil Conservat~on Servico, (Annexure "I");
Naclean Shire Council. (Annexure "J")
DeparLment of H~Ali lZoads,
National Parks and ~-Jildlife Service,
Their responses have all been carefully considered and the issues they have
raised have been addressed in the body of the report.
- 47 -
The replies received are attached as annexures A to J. The follo,.Anq brief
comments are made in relation to each reply.
a)&b) Department of Environment and Plannin,,, -
it,, if The Director's requirements are set out in annexures "A" and and
have been addressed in the body of the report.
Lands Office.
The Lands Office will be the determining authority for those sections
of the development which involve work below H.H.U.M.
Close contacL has been maintained during the preparation of thc Study.
They have reviewed a draft copy of the report and minor chanoes and 0
additions have been made in accordance with their SLI(IgesLions. 0 C,
Department of 1,,Iineral Resources.
The Department's comments have proved useful and investi-ations were 1 0
carried out in accordance with their su,,-estions. Probin-s have 00 Z-1
revealed that the indurated sands are deeper than the proposed
excavation levels over the entire site.
Consultations have been held with the State Fisheries and with tho
State Pollution Control Commission as sug-ested.
Department of Agriculture - Fisheries Division.
The Department have raised no objection provided adequate steps are
taken to ensure no detrimental impact on the adjacent oyster lease.
The oyster leasee has been contacted and has confirmed in writin- 0
(See Annexure "V) that he has no objection to the proposal provided
it is carried out as detailed in this report.
- 48 -
The dredging section of the project has boon designed to comply with
the Department's requirements.
f). Maritime Services Board.
The Board has raised no objection to the proposal but has specHlod
conditions which should be applied to the approval.
The applicant agrees to comply with these requirements.
S). Department of Public Works.
The Department has raised no objection to the proposal but has
suggested that a number of standard conditions be imposed on the
applicant.
Because of the nature of the stabilisation works proposed along the
bank, condition No I(a) is not applicable to sections of the
operation. No excavation is proposed within five metres of the exist-
ing high water mark but the filling operations will re-establish the
H.H.W.M. some 5 to 8 metres further into the estuary. This will have
no effect on flooding, tidal or flow patterns but will assist in
ensuring the protection and stabilisation of bank vegetation.
The applicant agrees to comply with the Departments conditions
(subject to the variation detailed above).
h). State Pollution Control Commission.
The dredging section of the proposal will require the Commissions
approval under Section 19 of the Clean Waters Act.
49 -
The applicant undertakes to make application for the issue of a
licence prior to the commencement of dredging and will comply with the
Commissions requirements.
The other matters raised by the commission have been addressed in
section 3.1.6. and 4.2.1(f) of the report.
Soil Conservation Service.
The Service have offered a number of suggestions and raised points
for investioation. 0
One of the objectives of the proposal is to create a more stable beach
adjacent to the park and to protect the existino bank veoetation. 0 0
The applicant has already carried out a trial stabilisation program
over a section of beach (see section 3.1.4) and the knowledne and 0
experience gained from this trial will be utilised to advantage when
stabilising the new bank.
The species which have proved able to tolerate the high salinity
levels of the trial section of stabilised beach will be established by
planting and nurturing of runners. An over-sowing of species listed
below will be used to aid the early establishment processes.
Seed and Fertilizer Proposals.
i) . Prior to planting and seeding; the stabilized area will be C~
irrigaLed heavily (50 to 75mm) to reduce salinity levels;
ii). An oversowing of Ifulled couch (15kg/lla) and Tytilla Rye ('20k,/IIa)
will be applied together with;
iii).Fertilizer (AFL Gower II or similar) (500 kg/11a) and
iv.) Couch runners.
v). Follow-up application of 200kg/fla of Nitram about 6 months after
sowing (Spring or Autumn).
- 50 -
Maclean Shire Council
The Council will be the determining authority for the land - based
sections of the proposal.
The points raised in their letters have been discussed in the report.
Other Departments
The Department of Main Roads and the National Parks and Wildlife
Service were consulted during the preparation of the study but have
not advised any special requirements.
6.3 Local Organisations and Persons Affected by the Operation.
Oyster lease No. 64.208 lies to the north-west of the proposal and the owner
of this lease was contacted and has written, advising that he has no
objections whatever to the proposal provided it is carried out in accordance
with the guide lines set out in this study. (See Annexure A").
The Clarence River Fishermen's Co-operative Ltd., was contacted and supplied
with details of the proposal and has replied advising that they have no
objection. (See Annexure "L").
- )I -
R E F -!;' R E NI C E' S
--------------------
Public Works Department, 1978. Clarence River Waterways Study, M,.~D
78006.
Christoper Miller Consultants Pty Ltd, 1983. Environmental I- I-'Ipact
';LaLCIIIUIIL, Wallder- hi~, SLLil' I,c,.,;orL.
Christopher 11iller Consultants, 1983, op.cit.
State Pollution Control Cornission, 1981. Environmental Control
Study of Botany Bay BBS23A.
5. G. Holmes, pers, comm.
Horton, J.U. 1977. E`colooical Effects of dredoin- and Dred-e Spoil ID 0 0 0 Disposal. US Fis and kJildlife Service Technical Report.
Hutchin-s, P. 1982, Proc. Linn. Soc. N.S.W. IU6 (2), 1031-200.
SPCC ' 1981, op. cit.
Horton, 1977, op. cit.
M-~'D, 1983, op. cit.
Laricum and West, 1983, Proc. L-inn. Soc., N.S.W 1.06 (3), 2ol-212.
Christopher Miller Consultants, 1983, op.cit.
SPCC, 1983. A guide to 111angrove Transplanting.
PVID, 1978, op.cit.
ANN LA UX E "A" .
New South Wales Government
Department of Environment and Planning
The Managing Director, John Allen & Associates Pty. Ltd., 241 Robert Garrett Street, CGFFS HARBOUR. N.S.W. 2450
Dear Sir,
Remingion Ctinife 1 /5 Live(pooi Sftt)ut. sycii ~v 20Aj
Box 3927 G RO SVway 2001
DX. ib SVcjr)ay 266-7590
confacl. R. Jordan
Ourefele-e 83/1884
YoLdlelart'ri-e 3510
Proposed Sand Extraction by Mr. K. Harris at Clarence River Estuary, Yamba.
Thank you for your letter dated 20th October, 1983, which indicates that you are consulting with the Director with regard to the preparation of an environmental impact statement for the above named.
2.The basic requirement for an environmental impact stitte-ment that relates to an activity referred to in Section 112(l) of the Environmental Planning and Assessment Act,1979, is that it shall be prepared in accordance with Clauses 57 and 58 and bear a certificate required by Clause 59 of the Environmental Planning and Assessment Regulation,1980.
J.Vllth re8~ird Lo Lhe furm citid cujiLunL Ul' thu t-11VIrunweiiLitl impact statement it is advisea that there are legislative requirements for the preservation of relics and Aboriginal places. Where there is a possibility of these being en-countered in development the incorporation of an aboriginal archaeological survey as part of an environmental impact statement may be necessary. Where aboriginal archaeological surveys are needed, it is a requirement that they be under-taken by persons who are professionally qualified archaeologists or anthropologists, or who are members of the Association of Consulting Archaeoloj,,i:;ts. If in doubt on this matter a proponent should consult with the National Parks and Wilcilife Service. The Director requires that you should take into account the matters specified in the attachment to this letter. These matters are to be adequately addressed in the environmental impact statement, and should be taken into account in the determination of the proposal by the deter-mining autho!-ity with whom we suggest you confer.
4.Where matters are likely to come within the scope of legislation relative to air, water and noise control as administered by the State Pollution Control Commission, the view of the Commission should be sought.
5.Should you require any further information regarding this matter, please do not hesitate to contact us again.
Yours faithfully,
J 4ward 11~1 ;~/fi ~%/' _)-h 3 t Exe tive Officer,
Environmental Planning Division. s ueiegate ror tne uirecior.
2 -
Description of the environment.
This description should provide details of the envirunment in the vic;nity of the development site and also of aspects of the environment likely to be affected by any facets of the proposal. In this regard, physical, natural, and economic aspects of the environment should be described to the extent necessary for assessment of the environmental impact of the proposed development.
Assessment of environmental impact and measures to be taken to reduce the impact especially with respect to: -
Effect of extraction on sEKJiment transport rate of the river. Bed and bank stability of the river during and after the operations. Details of sediment and material gradings and any likely changes due to extraction. Possible siltation, sedimentation or downstream effects (including turbidity) of the extraction. Any likely cumulative effects of the proposed oper~,tion when considered together with other operations in the vicinity. Details of floods and any likely effects of the operation on flood liability of surrounding lands. Possible effects of flooding on the operations. Effects on aquatic fauna and flora and on bank vegetation. Likely noise disturbance caused by the operations, including transport operations, on nearby residences.
. Other impacts of trucking movements.
. Dust control and any nuisance likely to be caused. Water treatment and other pollution control measures. Dispo-,al of wi,ste material. Landscaping measures and effects on the visual environment. The proposed final use of the site and likely effectiveness of rehabilitation.
Authorities contacted.
The names of authorities contacted should be listed with particular reference to the Maclean Shire Council; the Department of Mineral Resources (embodying Council's views upon the desirability or otherwise of natural accretion of sediments), Department of Agriculture, Division of State Fisheries; the Maritime Services Board; the State Pollution Control Coiianission and in particular the Public Works Department. Any comments relating to specific matters of interest raised by such autho ities should be declared, including those in relation to possible cumulative environmental problems
I NEW SOUTH WALES DEPARTMENT OF ENVIRONMENT AND PLANNING
ATTACHMENT
PROPOSED SAND DREDGING FROM THE CLARENCE RIVER ESTUARY AT YAMBA BY 1~2. K. HARRIS.
A comprehensive environmental impact statement should adequately cover all the matters specified in Clause 57 of the Environmental Planning and Assessment Regulation, 1980.
These matters should be clearly and succinctly outlined in the text and where appropriate supported by adequate maps, plans, diagrams or other descriptive details to enable all concerned to gain a clear understanding of the full scope of the development and its likely impact on the environment.
The following particular matters should be included in its coverage:
1. Background information.
Location of works. Broad nature and eztent of works proposed. Land teriure, boundaries, site details in relation to environmental planning instrument zonings and any other land use constraints.
2. Detailed description of the proposal.
This description should not only describe the proposal at the site but also describe any associated operations such is winning and transport of materials, processes involved (highlighting any proposed crushing or blasting), disposal of w~,stes, rehabilitation, landscaping and use of the end Product if likely to have environmental implications.
Particular matters to be covered include:
Characteristics and economic significance of the resource. Methods of extraction/plans of operations. Type of machinery and equipment to be used. Expected life of the operation.
. Number of persons to be employed. Hours of operation. Details should include dredging depths, proposed underwater slopes, nature and quantity of spoils and proposals for handling/disposal of same including -
(i Location and quantity of any necessary stockpiling. Gfl Access arrangements - truck routes and number of truck movements.
. Noise levels.
. Any changes to existing land surfaces; property boundaries; Mean High Water Mark; adjacent roads and/or facilities as a result of the works.
. Disposals for rehabilitation and assurances of effective completion.
ANNEXLJIKE "B".
; kill. New South Wales Government .... ... .
Department of Environment and Planning im W
Remington Cenlr e
The Secretary, 175 Livefpooi Street, Sydney 20W
John Allen & Associates Pty. Limited, Box 3927 G.P 0. Sydney 2001
Stoker House, DX. 15 Sydney
Gordon Street, Telephone- (02) 266 7ill Exi COFFS HARBOUR. N.S.W. 2450 7590
Contact: R. Jordan
Our reference: 83/1884
Your reference: 3510
Dear Sir,
In response to your letter of lst March, 1984, please find attached Director's requirements applicable to the proposed marina.
2.As mentioned earlier, these items should be incorporated in the environmental impact statement you are currently preparing in respect of the dredging operation adjoining the Blue Dolphin Caravan Park and while each matter will be dealt with independently, it is desirable the E.I.S. covers the entire project.
3.Should you require any further information regarding this matter, please do not hesitate to contact us again.
Yours ithfully
r
r t
t Manager,
Assessments Branch.
NEW SOUTH WALES DEPARTMENT OF ENVIRONMENT AND PLANNING
ATTACHMENT
COM14ENTS RELATING TO THE DIRECTOR'S REQUIREMENTS FOR AN ENVIRONMENTAL IMPACT STATEMENT FOR A PROPOSED MARINA IN THE CLARENCE RIVER ESTUARY AT YAMBA FOR MR. K. HARRIS.
Additional Items Affecting the Marina Specifically
Description of the Proposal
Describe the proposal and include as part of the E.I.S. for the associated dredging operation.
2. Particular Matters for consideration include:
Plans showing the location of the various components of the proposal in relation to the physical features of the land and waterway and adjacent road access and residential development.
Information on the design and capacity of the particular components of the proposed development including:
- The marina facilities, moorings, fuelling arrangements.
- Control of water pollution, including for bilge control; stormwater, vacuum line and pumpvshore station; oil and Workshop wastes, rubbish disposal.
- Construction supervision and operational management including the monitoring of pollution.
- Shore-based facilities including supply, storage, servicing, slipping, repair and launching facilities, access and parking provisions, lighting and hours of operation.
- Conceptual information on any Possible future expansion of the proposal including its nature and extent,and likely program for completion,
Control of noise levels including for existing and predicted noise levels (day and night), proposed noise sources, proposals to minimise noise generation and any residences or land uses that may be affected by noise.
Adequacy of provision of services and infrastructure requirements. Economic-social impacts, employment opportunities, recreational demand, use and benefits.
Traffic generation and adequacy of provisions for parkingi navigational aspects. -
3.Identification of role of Government Authorities.
Government authorities such as the State Pollution Control Commission, Public Works Department, Crown Lands Office, Maritime Services Board, Department of Agriculture (State Fisheries) and the National Parka and Wildlife Service should be consulted and their Preliminary views and requirements outlined in the environmental impact statement.
The Director has no requirements for the form of this E.I.s. Matters may be discussed in any order that will reduce the need for repetition of information and assist comprehension by readers.
4) Assessment of the Environmental Impact of the Mdrina Component.
The Environmental Impact Statement should examine the impact of the marina on the various aspects of the environment affected both during and after construction, emphasising any environmental safeguards incorporated in the design or operation of the proposal to mitigate adverse environmental impacts.
Particular matters to be included and suitably quantified relate to:
Potential for air Pollution. Control of water Pollution. Effect of noise, particularly on nearby residents and users of the park. Operational management, including monitoring of pollution. Any increase in traffic and demand for parking.
4th April, 1984.
4.
I IM
AN N i I` N U RZI.: 'IC'f
Lands Office P.0 Blix 11 GRAFTON. N.S.W. 24160-
Messrs John Allen and Associates oyr uLe(LInce GF83 H 120 JD:JAC Pty Limited, Consulting Engineers, Yotir julerunce 3510 24 Robert Garrett Street, COFFS HARBOUR. N.S.W. 2450 1 e1uph000. 420545
Dear Sirs,
QUARRY LICENCE APPLICATION BY K. HARRIS FOR THE PURPOSE OF REMOVAL OF SAND--YOUn LETTER OF 11TH NOVEMBER, 1983
The abovementioned proposal is an activity that is likely to significantly affect the environment and will be determined under part V of the Environmental Planning and Assessment Act, 1979, by this Office.
In order that your application may be considered it will be necessary for you to prepare an Environmental Impact Statement covering the proposal. You should now consult the Director, Department of Environment and Planning with regard to the form and content of the Environmental Impact Statement.
The Statutory authorities listed hereunder should be consulted and their preliminary views and requirements should be outlined in the Environmental Impact Statement:
Maclean Shire Council, Public Works Department, Maritime Services Board, Department of Agriculture (Fisheries Division), Department of Mineral Resources, National Parks and Wildlife Service, State Pollution Control Commission.
A draft copy of the Environmental Impact Statement should be forwarded to this Office for review prior to consent to the Lodgement-of the completed Statement being granted.
Yours sincerely,
otl/icer-iAviCharge
An Office of the Departrnent of Local Gavemnvnt and LmIds
A A A L A U 1-~ L 0
New South Wales Government
Department of Mineral Resources C.A.G.A Centre B-18 Bent Street
Mr J Allen Sydney Posta Auuru5s
managing Director GPO Box 5288 John Allen and Associates Pty Ltd Sydney, NSVV 2001 24 Robert Garrett St Telex ,X~M AA 74875 COFFS HARBOUR NSW 2450 95
Our reference: M83/3788
Your reterencel
Foi tLJ1010.1 111101111JUL111 I 111~
Telephone~ 231 0922 Extension:
Dear Sir,
PROPOSED SAND EXTRACTION FROM CLARENCE ESTUARY AT YAMBA — MR K HARRIS
I refer to your letter dated 19th October, 1983 concerning the above proposal. Officers from this Department have examined the proposal and the following comments are made.
This Department has no statutory control over the extraction of sand, which is not a prescribed mineral under the Mining Act 1973,and hence has no specific requirements.
The surficial Holocene muddy sands in the area are believed to be thin and are unlikely to produce any major turbidity problems during extraction. The proponent should confirm this and seek the approval of the State Pollution Control Commission and State Fisheries (Department of Agriculture) in this regard. The underlying sands are at least partly reworked Pleistocene deposits with organic impregnation and induration common at shallow depths nearby. The proposal involves a mean extraction of approximately lm and may encounter the indurated sands in places. The degree of induration caused difficulties during the excavation of the Yamba boat harbour extensions (adjacent to the proposed site). The proponent should obtain details from the Public Works Department, and would be well advised to undertake some subsurface sampling/probing to assess the suitability of the deposit for extraction.
Assuming that the proposal as detailed in the Environmental Impact Statement is considered to be a responsible one, then this Department's general policy would be to support it.
I hope this information will be of assistance in preparing the Environmental Impact Statement. Should you require any further information on the matters raised please contact Mr I Walsh (telephone 02 240 4765).
Yours faithfully,
0
N L Markham for Secretar
New South Wales Government
Department of Agriculture McKell Building Rawson Place
Mr. J. Allen, Sydney 2000 Managing Director, P.O. Box K220 Haymarket 2000 John Allen & Assoc. Pty. Ltd.) Consulting Engineers & Town Palnners, Our reference: PO.83/071 TJD:ROIS 24 Robert Garrett Street, Your reference: COFFS HARBOUR. NSW. 2450 95 3510
Telephone: 217 6666
Extension: 6110
Dear Mr. Allen,
I refer again to your letter of 19th October, 1983 and your further letter of 9th December, 1983 concerning a proposed sand extraction operation on the Clarence Estuary at Yamba (K. Harris).
The Department wrote to the Lands Office, Grafton during 1983 in respect of this proposal and advised that no objections were held provided dredged material was contained in adequate settlement ponds and, in regard to the artificial sandy beach formation, adequate steps were taken to ensure that siltation of the adjacent oyster lease (no. 64.208) did not occur. I enclosed a copy of the original plan submitted by the applicant for your information.
This advice stands, however, it is also considered that dredging should not extend further than the existing channel and depth should not exceed 2m at mean low water mark.
In regard to your letter of 9th December, 1983 details of oyster lease no. 64.208 are provided as follows:-
Lessee - Mr. T.P.C. Phillips Wooli Street, Yamba
I would suggest that an on-site inspection with the lessee and the local Fisheries Officer may be desirable to assess the value of the lease and discuss precautions that may be taken to safeguard the site.
The local Inspector may be contacted at the following address:-
Senior Tnspector Bennett, River Street, Maclean 'phone - (066) 45.2147
Yours faithfully,
'iORAN
r G.H. Knowles, T. ORAN,
Director-General
Encl,
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The Managing Director, John Allan & Associates Pty. Ltd., 24 Robert Garrett Street, COFFS HARBOUR. N.S.W. 2450.
felk:phune Nu. 240-2111 (All lluur~)
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Ple&,w Otiote No 83/52119 DT: WC
2~ December '1985
Dear Sir, Proposed Sand Extraction from Clarence Estuary at Yamba - Mr. K. Harris.
Referring to your letter of 19 October 1983 (3510), it is advised that the Board raises no objection to the proposed dredging subject to the conditions which were conveyed to the Land Board Office, Grafton in connection with that office granting a quarry license for the Proposal. The conditions ape as follows :_
The Teriant shull not be exempted from the provisions of the Management of Waters and Waterside Lands Regulations - N.S.W. and shall at all times comply with the requirements of all Acts and Regulations administered by the Maritime Services Board.
The Tenant shall at all times comply with any directions given by the Board or an officer of the Board in regard to painting, lighting or use or alteration of any structure as may from time to time be required in the interests of safe navigation, equitable use of and conservation of waterways and the prevention Of Pollution.
All operations shall be carried out in accordance with the Board's Acts and Regulations and any special conditions which may from time to time be required.
Only anchors and mooring arrangements approved by the Board shall be used and plant not working is to be hove clear of navigation or to the bank in restricted areas.
The lights and shapes to be displayed by vessels, plant and pipelines associated with dredgin oper-ations are as prescribed in the Navigation ~Collision) Regulations 1983, Rule 27 (d) (i) (ii) and (iii), or as otherwise directed.
No outlying wires, cables or pipes shall be used unless with the approval of the Board.
- 2 -
Any required depth shall be evenly maintained and the bottom left clear of debris, rubbish, potholes, etc. No slope to be steeper than 3 in 1.
Dredging shall be carried out so that no loss of depth is caused in adjacent waterways.
No dredged fffilte-Pial slizill bu depositu~d ill jll'y 1,1 kc, river or waLci-way.
Yours faithfully,
T C. /Or
T.C. PAGE, ;4_~
Secretary.
k—
Xt
New South Wales Government
Public Works Department JT; MP
J. Allen, John Allen & Associates Pty. Ltd., 24 Robert Garrett Street, COFFS HARBOUR. N.S.W. 2450.
186 M u lo swo r t h S (i t3o 1. L i zi i i it.) i tj
P.O. bux 22, L-ismottj 2480 Telex: 66140
Our i Qterence:
Yourreterence: 2,
Telephone: (066) 2 1 1 6 9 0
. Contact: Mr. J. Tropiano
12 1 Nov A983 Dear Sir,
Proposed Sand Extraction from Clarence River at Yamba - Mr. K. Harris.
Reference is made to your letter dated 19th October, 1983 requesting advice on any matters which the Department would require to be included in the Environmental Impact Study for the proposed dredging.
A Schedule of Conditions was submitted to the Land Board Office with our letter dated 19th April, 1983, which advised that there was no objection to the proposed dredging. The Department was also advised from the Land Board Office that a copy of these conditions would be forwarded to you as a guide to the preparation of the Environmental Impact Statement. Matters of concern to this Department are adequately covered by this Schedule of Conditions.
Yours faithfully,
K.F. Parr, District_Enqineer.
JT: LIP
J. Allen, John Allen & Associates PtY. Ltdo.0 24 Robert Garrett Street, COPPS —ARBOUR, N.S.W. 2450. 211 690
Mr. J. Tropiallo
Dear Sir, 2 1 NoV 1983
Proposed Sand Extraction from Clarence River at Yariba -- Mr. K. Harris.
Reference is raade to your letter dated 19th October, 1983 requesting advice on any matters which the Departmeat would require to be included in the F-AVIX-0jamental Impact Study for the Proposed dredging.
A Schedule of Conditions was submitted to the Land Board Office with our letter dated 19th April, 1933, which advised that thara wau no objection to the proposed dredging. The Department was also advised from the Land Board Office that a copy of these conditions would be forvarded to you as a guide to the preparation of the Environmental Impact Statemeqt. Matters of concern to this Department are adequately covered by this Schedule of Conditions.
Yours faithfully,
K. F. Parr, District Enginee
JS;LG Department of Public WorkS lud Mulobwul tit Stle"t. I-luliwe P . 0. Box 22, Lismrs 24UU
The Officer-in-Charge, Telex -. 66140
Land Board Office, Ourreference; LB82 Clarence P.O. Box 11, Your reference:
GRAFTON. N.S . W. 246o T@IWWrw: (OW) Rl 14611 211 688 Contect: Mr. J. Smith
IN1.9il IC33
Quarry Licence Application By K.A. Harris Blue Dolphin Caravan Park, Yamba Road, Y&mba*
REFERENCE: Your minute GF83 H120 JD:JAC of 7th April, 1983-
This Department has no objection to the granting of the abovb licence subject to those conditions outlined on Schedule 21 attached.
14P
C JP APR M113 AP R u K. F. Parr,
District Engineer, Lismore.
H
Cluly, 1975) SCUIRILE :!
(IFNEHAL CONDITIONS
Full
DREDGING
No material Allaji lie removed from tile 1-iver or lake
bad within it fit"ill 6- Illet'"lli witio measured frow a
line approximatiiig Local Meaii lligh Water mark am
determined ity the District Ejigilleer, Department of
Public Works, or from a stril) .5' mety-es wide
measured fr(Im tile face (if any bridge, retaining wall,
wharf, beacon pile, or submarine crossing.
No excavation I'llall'1141 carl'i" out I)olow a gradient
line of one vertical to six ljorivontal. drawn from
the aforesaid line approximating Local lligh Water
Mark, nor shall excavation be carried out below A
gradient line of one vertical to mix horizontal
drawn from tile intersection Of' the vertical Plane
of tile face of any O C the above striteturen and the
bed of the river.
The maximum depth of excavation shall be limited as
in (h) above and in addition in no case shall the
maximum depth be more tjjanj~z;' metres below the afore-
said Local Mean lligh Water' Mark-
2. (it) The provision of tile ilivers avid Foreshores Improvement
Act No. 20, j91jjj as amended, sliall be observed s part-
icularly in respect of Cl.ille4c 23A. The tenant shall
conduct all his OPOt-ati011s irk such a mariner an not
to cause erosion of foreshores, either directly or
as a result of the destruction of trees or vegetation-
The tenant shall conduct all his operations in such
a manner as not to causei in tile opinion of the
District Engineer, Department of Public Works., an
increase in any risk offailure Of' the shore or
river bank. Where operations are not so conducted
the Act makes provision for restoration or protection
of the river and bank to be carried out by or at the
cost of the owner or occupier of the land. (C)
The permission to dredge may lie terminated or varied
At any time without compensation if it be found that
operations On the-area are causing or likely to cause
erosion of tire foreshore or damage to structures.
a
Schedule 2 contijiued
Th" District Ellgiltoor, 001)(11-talont of' Public, Works may
itpon written notice to the lessee, prohibit the cont-
illtialkeo of* dredging operations on any defined part of
tile area if, in tile opinion of the said Engineer, it
in desirable tit tile iliteront of the Public to do so.
No piLe" or 1110(bri.11K loolils "ball be placod ilk tho bed
oL, tile river, without permission having first been
obtained from the District Engineer, Department of
Public Works.
5- 1110 tenant shall, at bis owsk cost, remove any structure
erected by him on the fornshore and shall leave the
land clear of matorials, rubbish etc., and to the
satisfaction of the Department at the expiration of
tile lease by offtuxion of time or upon other determin-
ation thereof.
Should any structure, or any part thereof, not be so
removed as aforesaid, tile Department may remove and
mail the same and recover from the tenant the cost of
such removal less the net proceeds of any sale made.
The tenant shall make suitable arrangement with the
Council regarding access to the excavation, it such
is necessary.
bouilds survey in required to be akibmitted to and
approved by the District Engineer, Department of
"**,~Public Works. The survey must comply with the
Irb lowing:-
The igiii of co-ordinates of tile survey must be
related o.a cadastral or other official survey. .1 , te ~do
Soundings o tile existing river bed are to be shown
1" ,f
over tile entir area to lie dredged. The soundingis
t
must be of suffici nt number to enable 0.5 a contours
ff I X( to be confidently dr n. Soundings must be based an
a datum of lovets of lo It Indian Spring Low Water or
other dattim acceptable to District Engineer,
Department of' Public Works. 6*018 lantlat also be
related to ait official belich marXkvt tile area.
All proposed depths of' dt-edging slid &*de boatters are p
to be clearly shown oil the stirvey I
T'he proposed method and area in which any ..%dg;, waste
in proposed to be discarded is to be clear
i ice
ted
I
a
schedule 21 Colltillued
The C01144114. M11441 1 "411111ty to Litt) UlatriLct Likallivar,
Department of Public Works, a plan of soundings to the
anic standard as indicated in 7 (b) taken within the rea of the application after completion of dredging
and otherwine as required by the District Engineer,
.Department of Public Works.
9. 'Me tenant shall carry out dredging operations in such
a manner as eiot to caune any interference to river
traffic by latinch or rowing boat and all the navigation-
al requirements of the Maritime Services Board &hall be
observed.
In addition to the above, conditions numbered 5, 8v
9, 10, 11, 17, 20, 23, 24, 27, 28, 30, 31 and 33
40 of &at out in the Lands Department form A254 (b) shall
be observed.
New South Wales Governiflent,~,,,- j
State Pollution Control Commission 49 Victoria Street Grafton 2460
John Allen and Associates Pty Ltd, P.O. Box 498, Grafton 2460 24 Robert Garrett Street, COFFS HARBOUR. 2450 Our reference: 256084A AED/EM
Your reference: 3510
Telephone: 42 0535 Telex: 66966 NSW GOOR
Dear Sir, 1 5 NOV 1983
Dredging of Clarence River Estuary by Mr K. Harris Dolphin Caravan Park. Environmental Impact Statement
I refer to your letter of 19 October 1983, concerning the above matter and submit the following comments.
The proponent will need to apply for the Commission's approval under Section 19 of the Clean Waters Act prior to the commencement of dredging. If the exfiltration and evaporation of surplus water from the stockpiles of dredged material prove to be inadequate to prevent a discharge to the Clarence River, the proponent must hold a licence under the Act for that discharge. A likely condition of that licence would be that effluent contain not more than 50 mg/L of suspended solids over and above the suspended solids concentration in the river water.
Suction dredging would appear to be the only practicable method of material extraction.
The E.I.S. should explain the steps that will be taken to control run off to the Clarence River from sand stockpiles both during periods of wet weather and during daily sand pumping operations. Appropriate abatement works might include extensive diversion drainage and the construction of stable runoff storage basins with a wet weather run off volume over and above normal daily usage rates equivalent to 200MM rainfall over the stockpile area. Should exfiltration and evaporation rates be inadequate to handle run off liquor (from daily operations) then such basins would need to be pumped out daily onto areas such as pastures and roads, where evaporation of the liquor will take place, but only when run off of the liquor will not occur. Discharges to the Clarence River should be avoided where possible.
A final determination of the necessary controls will be made when considering the proponent's applications under the Act.
The premises will not be scheduled under the Clean Air Act and so the Council will be primarily responsible for the control of air pollution. However a dust problem may arise from:-
(a) Dredged material being dislodged from trucks and falling onto roadways during material transfer operations. The continual movement of vehicles passing over material deposited on roadways has the potential to produce dust problems at nearby residences.
(b)' Wind blown material from stockpiles.
2. We would advise Council to require the adequate wetting down of
stockpiles and roads. Depending on the severitX of the problem it may be necessary to require vehicle loads to be adequately covered and trucks washed down before leaving the premises.
The Council will also be primarily responsible for noise pollution, it not being likely that the premises will be scheduled under the Noise Control Act, 1975. The E.I.S. must adequately cover noise pollution and so estimates need to be made of expected noise levels at the nearest affected residence of earthmoving machinery, trucks and dredge when it is a various locations within the lease area.
Yours faithfully,
A E DYER for Secretary
Mr. J. Allen, John Allen & Associates PtV. Limited, 24 Robert Garrett Street, COFFS HARBOUR. N.S.W. 2450
*T I*,"
SUB-DISTRICT OFFICE N.S.W. GOVERNMENT OFFICES 49-51 VICTORIA STREET GRAFTON
18th November,_196~_
P.O. Box 242, Grafton. N.S.W. 2460 Telephone: IZ= 42 0666
In reply quote [ and addrem "Soil Conservationist"
SOIL CO . NSERVATION
SERVICE 0 F N. S. W.
C,
IS
S
4OUT14 44
Dear Sir,
Re: Proposed Sand Extraction from Clarence Estuary at Yamba. Mr. K. Harris.Environmental Impact Statement
An inspection of the site was carried out in company with Mr. Harris on the 14th November, 1983. The Soil Conservation Service would expect to see the following aspects covered in an Environmental Impact Statement:-
0onsideration given to the protection of the banks of the estuary from wave action and tidal influence. This would include comment on the form-ation of bank batters to low angles to ensure stability and the merits of their protection with stone or similar material.
Where feasible natural vegetation should be retained and protected and the environmental impact statement should comment on this aspect.
Immediate revegetation of all disturbed areas following final land shaping is highly- desirable to assist erosive stability. Comment should be made on revegetation techniques which will be utilised on the sand material used to stabilise the estuary bank. This should include plant,seed and fertiliser recommendations with consideration given in this regard to potential salinity problems.
Comment should be made on the possibility of tree destruction along the estuary bank. Under.Section 26D of the Water Act certain restrictions apply to the destruction of trees within 20 metres of the banks of the Clarence River and the Public Works Department should be consulted in this regard prior to such operations proceeding.
Stockpiles of surplus sand to be offered for sale should be placed outside natural hazard areas and provision made to safely dispose of waters utilised in the sand pumping process. Such waters should not contribute to erosion or flooding of land. The environmental impact statement should explain how these considerations have been taken into account.
,Yours faithfully,
B.E. COLE-CLARK, District Soil Conservationist, GRAFTON.
1 . I I , J I I A i-A~ ~ iL\' , ,
fU C assluum lest tons alloulb he abbross6b
is "94# Verit" 411-k *,ib lli,q~ ... o#r - tlll,ms 43 Itod Clerk -. 414D. Nox 171
I
JT4e Gumil of t4e of gadvan
JUM" quote ~Wo. *4irc Aiall, Ondcatt, 2,163
I I
in goat rqag
WR: SN
I17th November, 1983.
John Allen & Associates Pty. Ltd., 24 Robert Garrett Street, COFFS HARBOUR. 2450.
Dear Sir,
Sand Extraction - K. Harris - Clarence River at Yamba.
I refer to your letter of 19th October 1983 regarding sand extraction adjacent to the Blue Dolphin Caravan Park at Yamba, and advise that Council at its November 1983 Meeting resolved that the following matters should be taken into account in the Envirorunental Impact Statement:
Impact on existing oyster leases and jetties.
The stockpiling and disposal methods to be used.
Reinstatement of all areas to be used in the operation.
No damage to be caused to the foreshore or any trees or mangroves existing along the foreshore.
Thank you for referringthe matter to Council.
Yours faithfully,
Ci /- 11
(P. L. Purcell), SHIRE CLERK.
Phone (066) 46 2001
Trevor P. C. Phillips BIG RIVER OYSTER SUPPLY,
1
64 WOOLI STREET, YAMBA 2464
25th. June 1984.
TO WHOM IT MAY CONCERN.
With regards to the dredging proposal of the Blue Dolphin
Caravan Park affecting that area of waterway frontin,-3 tho
caravan park. forashora extondili','~- to tila existin, aavi,~utiDa
channel.
I -iavu had Atu Mr. 'Iax-riL; Ja ,.i Ll~
local flaheries inspector and the works proposed are not,
in any way, going to affect my adjoining oyster leases and
to this end I have no objection, provided the work is carried
out in the manner proposed at that meeting.
I \ t ~ 1 ~ 1
Trevor. P. C. Phillins.
la.,reitce kAver ~Tij /t e,,o-- i i i t, i t I.; C 0 — 0 1 J) C'r 41 lillt, 1, 1
UFFICL AIJbINL~,.5 : -)I-bb IML11 '_IIr(LL 1. MACLILAN. ~_Au:j ILL I GHAI~IIIL_ ADDHL!,t~ . "CL AM 1~11,01 ... NIA, I. t A N
I LILLPHONE: MACLE-AN 45 L05.5) IL UKA 46 61 16
25th November, 1983
Mr. J. Allen, Managing Director,
John Allen & Associates Pty. Limited, 24 Robert Garrett Street,
COFFS HARBOUR. N.S.W. 2450.
Dear Sire
Re: Proposed Sand Extraction from Clarence EstuarV at Yamba -
Thank you for your letter dated 19th October, which was placed before our Board Meeting on Fr~day, 18th November.
The project involved was subject to our inspection some months ago, when we were advised by the N.S.W. Department of Fisheries. An on-site inspection was conducted, and it was decided at that time that there would be no objection from the professional fishing industry.
Sofaras we could see, the only possible harm would be caused by the run off of silt from the on-shore dump. The silt could well be detrimental to local oyster farmers, and we suggest that you take that matter up with them.
Thank you for your enquiry.
Yours faithfully,
(B. T ,'-14EYEN) KANAGER
H. K. Clarke & Associates Ply. Limited
NOISE CONTROL AND MANAGEMENT CONSULTANTS PHONE: (066) 52 3606 or 52 4582
'A~ 114 CD 11 S 17--
1 M ipA, C: -r S -r1%- -r I-= 1-f IF-= Iq -r
IF CD FZ -r 11 IE:
IE: X -r C -r T- C:) M C-) F- S 1q ID
-v'AL M ]E3 AL S T^T
9 July V':-:4
cb(fv~putjaefice to
3 Macauieys Headland Drive, Coffs Harbour, N.S.W. 2450
8 Park Avenue, Colts Harbour, N.S.W. 2450
111-1pact StItement
CI 'API :I'lC I:
I . I NT1,1 01 )H
Thi s St ate ilien t I iat_ heen r Hque nte d b y Jutin A I I ei I E A -I.: oci ~0 o , Pt ~ Ltd
COnSUltiny Eh~jlnk-t?(S dFid Town P1 iii i n-, Tht, ~ It it L--II)P [-I I I I I. Lt( III L'd t 0
'-_- LJp P to rt . Fi I -/(-I np ff I(' I it Ap I-) I j (-,It I IJ I 1 1 IJ I t t It - P r0lJonod t:-- N t 1 11- t 1011 Lit ~!JHLI
, ' , I - f , ie 1'illiri(j fr, )m ih(- Cl,jitlILIF' 1:',tihil Y AI 7,0111hi Alld t1W I I All'?I101 ( Ili
fll~,t 1-rial i 1 ()(11 1 111 , . I I I ~ ,
SITE DETAILS
The site i=_ 3S L!PtAiled 11-1 FIqLJ(P I of the En,. ironf-Fiertal
~tatelllellt. Tht. lit"ti t~ It I I., I(II-11, I- ji't, Im 1((~d (m Y,111111~1 Ptj,id.
-4ENT USED E0UIPI
The equipm ent uSed during the ccjkji- ----.e of this study wa~_ a~_- listeii
below, the sGund level i-rieter being calibrated befure and after each t~et
of measurements.
a R I(-) I I I F1 u (I e 1 14 ,,~ ~, I S I ~ I H , , e r i a I [m. 00 with I
1/2" microphone - cmiden-tei, type.
(b) Rion NIC-721 Pistonphone calibrator serial no. I
A ' 11 mea-_- urements have been made in accordance with
+ Australian Stanclacd
4. PROPOSED OPERATION
It i~ proposu-cl to ext(act material I-P , the USe Of a bLirije IIICJL[Itt:,d
SUCtion dredge powert-_,d by E, 2(__ Ill CU(NT-111is Die,:,el aiotor cilld PUIIIJ)
the niateiial to the ~tock -pil,- by a 1'.0iiii-Ti di:lirjeter delivt-r~ pip",
V,1 1,' 10,Adei- will he (j,-A-.~d t(,.) lo~ld Vellic.1i" With materlill Im
c,ite.
`5 j, TIMES OF OPERATIO1.1
The proposed operation will operate between the hours of C.)_.70(_) and
170c) hour--= Monday to Friday and 070C.) and 12C.0 hours on Saturda,~, 1111 I opefations related to this proposal will occur between these hour_-- ,
Operations not be conducted on public u( N S VT school holidal—.
11 K CLt'iRKE AS5OCIt':kTES PTY LIMITED
COFFS HARBOUR
A Noise SARD EXTPACTION Impact Statement CLARE14CE ESTUARY
PRESENT BACKGROUND NOISE LEVEL
The background noise level was measured and recorded at 102".D' hours on 29 May 19'c-"4 and was established as being 45dB(A).
The climatic conditions at the time uf this measurement were*.-
Dry Bulb C
Wet Bulb.##,# ... o .... I '_1 C
R. H. it. # # # ... , i #. — 4 #. # --I-, I ."~
Wind..,+,,,,, ... + + t +.. _0 -5 kms /hr
D irection - it - *.4Sc)uth
Cloud 4 #,it* I IC21th
NOISE LEVEL PREDICTION
The noise level which will be generated by the proposed equipment at this site is as follows:-
D T, e ci q e 87di..:0)) at 1000mm
F/ 1_~7 L o a d (-.~ r 80dB(A) at 7000mm
T T' IJ Ck S 7,30-:0)) at 7000mm
DISTANCE ATTENUATION
Due to the distance involved between the dredge and the nearest residences a noise level of 46dB(A) is anticipated at these residences from the dredge in operation when it is working at the closest location,
The F/E Loader will generate a noise level of approximately 5"DdE(A) at the residences however by fitting a residential type muffler to this equipment and by working the unit on the northern side of the stock-pile the noise level will be reduced to a level below the background level plus 5dB(A).
Vehicles used for transporting the material from the site will travel within 50m of the residences when travelling on the existing well formed road, ki noise level of approximately 55dB(A) will be observed in this situation. It is expected that an average of 10 truck loads of material will be Irinsported from the site per day with a maximum frequency of 12 per day. These vehicles will be travelling on a well constructed road free from any significant gradients and will increase the road usage by approximateiy one per centum,
H K CLARKE 'I! ASSOCIATES FTY LIMITED COFFSHARBOUR
Impact btatement CLARENCE ESTUARY
9. ASSESSMENT Of' NOISE J.M11Ac'1'
It is our opinion that no adverse noise impact will result from the operation of this proposed development, nor should any justifiable complaint relating to noise result from such operation.
This opinion is expressed on the strict condition that the plant and machinery is as specified in this statement and that all equipment is maintained in accordance with good engineering practice and to the manufacturers specifications,
H K Clarke M I I E
H K CLARKE Sf ASSOCIATES PTY LIMITED COFFSHARBOUR
Iluka Bluff
Freeburn Island
sula" n d
D I
TO L A A I A k I r) n r) r
ILL L-j
South Head or Wool i
YAMBA POINT
Barry Point
LOCALITY MAP
FIGURE 1.
2
6 (a')
2 ( c )
LEGEND ,J~
(C )
P P P 12 b!) 1
JP 4D 2.
LLJ
6 (a)
OR 160
6(c
Blue Dolphin
Caravan Park.
%ft..- POR 159,
Clause 20Area.
Open Space-Existing 6(a) Residential 2 (a)
( Village)
Open Space (Crown Land) Residential 2 N Special Purposes 6(c)
[~\\XlResldenfial 2(c).
0 62
'2
Figure No2
Exisfing Zonings
Rabbit IS
CLARENCE RIVER
Oyster Leases
CARAVAN PARK - And Site Of Proposal
Ya m Inn P I
Figure 3 Yamba Bay - Distribution Of Seagrasses
mmmmm
.................
Oi 50
1)0,
O~
Depths ire ir, W:e, itovt, or
Indian Spring Low Wate, I ISLW)
YAMBA BAY
7 77-7- T/
Seaqr ~S/ //Bed
0 Existing
-1-00 (Option 1) Jetty -0-60(Option 2)
2 5~-~-
1 PROPOSED MARINA (-AVpf1&xLma-te) 0 50-
-0-20 07
Bolt P,1mr)
P"r GLUE DOLPHIN CARAVAN rAHK Figure No.4. Blue Dolphin Caravan Park - Proposed New ContourS
After Dredging
-..Mod
W111, 1~
I
7Z:- A7 40~
S, -7-ZF-,4e -,-,A7S4E-
0- 0/5'
34375
Q)
D 'V, 'CHEDULE A
Areas to be filled approx 03 me fre
Pro osed (0 p New Shoreli
Exis ti,
T+
i- C." r3 L L30,1- PHIN r---
14~
Bette, 7- 1 4:07
6
~o
------- Igure -5
DL)nPOSE,'' DPEDGINd John Allen & Associates
------- OF Pty~ Ltd. , !..,L LEVELS ARE IN METRES. 1:1000 -5 8 L,t OTHER DIMENSIONS 3510. ~RE IN MILLIMETRES BL /IF DOLPHIA ~-APAVAN PAPK
17 F,81 N r~~'LESS STATED OTHERWISE. V E E T 13-7-84. T~
Uc3renCe Yamba.
ML-WL 0-35 UPD)
BE 15M t -IF
~'A E ' - 4-IF
5~ 77,47 C- Ci.-
Boat aT 'f"
0
—0-9
X, ro D
j,"In '7 :>,S i 71'
L! ;j ~2j
Pontoon Type Jetty PON T C
T)IPICA' L' S~ L
PLAN Scale.-1:2-50
T4 'to k, o od ql Ing
200 3
0
410
Polystfre-e ~e.v/ce Conduilhs*
floahi7g por"'(' r ~o P0 nfoor'.
S'~
C7:1
APPROVED ON BEHALF OF SHIRE COUNCIL
SCAL jo
PROPO JE T T Y. E. As Shown. SHEET 8 OF 8 LEVELS ARE IN METRES,.
------------ ALL. OTHER (DIMENSIONS (M)
Q-A RA VA N RK. DATE
L
BLUE DO L PHIN S H V E YE"l) DRAWN F,B~ No, AJ~El iN IM!LLIMETRES SHIRE ENGINEER Ur,"LE:'~-'3S S"AlIED OTHERMS)E 13-7-84. TL.
por 159 - p Yam ba. DATUM DESIGNED CHECKED TP-D- A JA.
C~
I N
t
<51)
ell " 0X <2
z 57 :__N A\,
6 1'- \rA
A, NON BOU ARY F PROP ED ASE OR TTY
I —Ir "Z'
4,-
It I
-~A
~K CA R VA N PA i
Y
1/91 -S~
C>
S11 ice " YLI
yu
0~r,168
rofflamwMAr
ALL LEVELS ARE IN METRES. ALL OTHER DIMENSIONS ARE IN MILLIMETRES UNLESS STATED OTHERWISE.
RE DATE DR eY CH, BY F TTE
DO OPOSED JE T T Y & .,S'HORE FACILI TIES 0 DOLPHIN r-1,R-AVAN PARK. 0L %I. -elf %-/--1 I /-I
APPROVED ON BEHALF OF SHIRE COUNI-i'
L E: 1: 1000 SHEET 7 OF 8 SHEETS
-1-1-1-11 SHI RE ENGINEER L)A r E SURVEYED DRAWN F,8, No.
13-7-84 TL DATE DESIGNEE) CHECKED L~B, No.
I-P-D- JA
INSTRUCTION No.
3510 A
COUNCIL APPROVED DRAWING Nc).
John Allen & Associates Pty. Ltd.
Consulting Engineers & Town Planners
24 Robert Garrett Street. Coff s Harbour. NSW 2450
Phore, ~066) 5,1 4304
Por 159 - Parlsh Yamba.
DESIGN SECTION N9 1_
DESIGN SECTION Nq 2
FIGURE 6.
CTR N AUEN AND ASSOCIATcc- PTY LTPi
Blue Dolphin Caravan Park
