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Approved plans
Attached to the e-mail OPW22/0029 - SRA application correspondence - Referral agency response – with conditions.
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Plans and drawings
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Log in to see the plans as drawn LOCALITY PLAN
CONCEPT LAYOUTS
LAYOUT 1 LAYOUT 2 LAYOUT 3 SITE
SUITABLE FOR RANGE OF PROFILES.
SUITABLE FOR FLATTER PROFILES THAT PROVIDE A REEF LENGTH >5m. SUITABLE FOR RANGE OF PROFILES.
SUITABLE FOR RANGE OF SEDIMENT TRANSPORT SITES
SUITABLE FOR LOW SEDIMENT TRANSPORT SITES ONLY. SUITABLE FOR RANGE OF SEDIMENT TRANSPORT SITES
(Including Restoration Zone 1 Main Channel).
(i.e. Not within Restoration Zone 1. Main Channel) (Including Restoration Zone 1 Main Channel).
IDEAL FOR SITES THAT ARE NOT EXPERIENCING EROSION OR
IDEAL FOR SITES THAT ARE EXPERIENCING EROSION.
WHERE THERE ARE CONCERNS REGARDING SILTATION
Module Width
SHORE SIDE SHORE SIDE SHORE SIDE
Offset
Offset
Offset
ACCESS SPACE 1m-4m (See Note 1.5.) NOTES
ACCESS SPACE 1-4m (See Note 1.5.)
MODULE WIDTH MODULE WIDTH ACCESS SPACE 1-4m (See Note 1.5.)
MHWS MHWS MHWS
dependent on available profile width
dependent on available profile width
No. of modules & module width
No. of modules & module width
Module length dependent on
available profile width
1m Below MLWS preferred.
1m
1m
1m
1m Below MLWS preferred. 1m Below MLWS preferred.
Max 2m below MLWS. Max 2m below MLWS. Max 2m below MLWS.
RIVER SIDE RIVER SIDE RIVER SIDE
LAYOUT 1 LAYOUT 2 LAYOUT 3
Restoration Footprint Extent
Restoration Footprint Extent LEGEND
Restoration Footprint Extent CREST WIDTH ACCESS SPACE CREST WIDTH ACCESS SPACE MHWS
Offset (See Note 1.4) (See Note 1.5) 1m Offset (See Note 1.4) (See Note 1.5) 1m
Offset 1m 1-2m below MLWS
MHWS MHWS MHWS Restoration Footprint
1.5 (max) MLWS 1.5 (max) MLWS 1.5 (max) MLWS
1 LAT 1 LAT 1 LAT
1m Below MLWS 1m Below MLWS 1m Below MLWS
VERTICAL DATUM: - HORIZONTAL DATUM: -
TYPICAL SECTIONS
REVISION REGISTER
- - - - - -
- - - - - -
DESIGN NOTES - - - - - -
1. MODULE LAYOUT: 3.4. Shell to be evenly mixed through the rock, when used as a composite, to achieve good interlocking and not
1.1. Restoration footprints (i.e. collection of substrate reef patches within a restoration site) are to be defined by placed in alternating layers. Mixing to occur in small volumes on the barge immediately prior to placement to - - - - - -
constraint mapping and minimum required distances as per Table 1 on NROR-2021-00. avoid shell damage due to rehandling. - - - - - -
1.2. Rock substrate is to be laid as reef patches, as per the drawings for each restoration footprint and consistent
with the design module requirements. Reef patches may be curved or shaped to reflect the local bathymetry 4. CONSTRUCTION: A 9/7/2021 Pre-lodgement comments SK BC AJ
and specific conditions and constraints for each restoration site. 4.1. Reefs patches expected to be constructed using an excavator mounted on a shallow-draft barge. Excavator REV.NO. DATE DESCRIPTION BY ENG. APP.
1.3. Footprint of reef patches to consider construction practicality and tolerances. This includes to be fitted with GPS position control (or have equivalent system in place to enable accurate placement).
1.3.1. Allowance for a minimum distance from MHWS sufficient to allow for placement of design rock grading. 4.2. Substrate Placement
1.3.2. Minimum distance of 1m from seaward extent to allow for construction tolerances in deeper water. 4.2.1. Rock shall be placed to be well interlocked and stable. International
1.4. Crest width to be minimum 1m in any direction. Larger crest widths (up to nominal 10m) are more desirable 4.2.2. Rock shall be placed to provide an irregular, organic finish (within nominated tolerances). This will
as they provide a larger area for oyster growth. assist in enhancing the stability of the seeded oyster cultch. Coastal
1.5. Access space between reef patches to nominally be 1m - 4m although larger spaces may be desirable 4.2.3. Rock placement to be clear of any existing vegetation and minimum required distances (NROR-2021-00
depending on site configuration or expected sediment transport or siltation. Note 5.2).
Management
1.6. Final layout of reef patches to be determined by the certifying coastal engineer prior to construction and take 2.2. Cured Oyster Shell 4.3. Placement tolerances OFFICE 50 / G Arm, SYC Marina, Main Beach, 4217, QLD, Australia
POST PO Box 306, Main Beach LPO, Main Beach QLD, 4217, Australia
into consideration local bathymetry, geometry of Restoration Footprint, adjacent land uses, presence of 2.2.1. Shells to be sourced from Mooloolaba Fish Market and local seafood restaurants. Shells to be cured (by 4.3.1. ± 0.5m horizontal tolerance TELEPHONE +61 7 55640564 FAX +61 7 55329147
erosion, existing infrastructure, wave action, water flows, sediment type, expectation of siltation and any other desiccation) in accordance with Queensland End of Waste Code - Oyster shells (ENEW07278317) as 4.3.2. ± 0.2m vertical tolerance (except crest) WEBSITE www.coastalmanagement.com.au
relevant factors. per the Waste Reduction and Recycling Act 2011. 4.3.3. Crest level to be no higher than MHWS and not more than 0.2m below MHWS at time of construction.
2.2.2. Shells to be whole, not fragments. Crest height to be lowered, as required, to match oyster recruitment heights at a given site.
2. MATERIALS 2.2.3. Shells may be washed in freshwater prior to deployment as composite substrate or as cultch (unseeded 4.3.4. Settlement of rock is expected to lower the reef patch profile over time.
2.1. Rock or seeded with oyster spat) 4.4. Anchoring of construction vessel not to impact on marine plants. No anchoring within 100m of submarine PROJECT NAME
2.1.1. Grading to be stable for individual locations and provide voids, rugosity and habitat complexity suitable cables. Noosa River Oyster Restoration
for habitat growth, as per design reef patches in drawings. 2.3. Seeded Oyster Cultch
- Phase 1 sites. Rock grading to be 150 - 500mm diameter with 50% over 300mm. 2.3.1. Cured oyster shell to be seeded with local oyster spat to enhance oyster growth and recruitment locally. 5. SEEDED OYSTER CULTCH, UNSEEDED OYSTER CULTCH, LIVE OYSTERS DRAWING TITLE
- Phase 2 sites. Rock grading for individual sites to be determined by coastal engineer for 2.3.2. Live oyster brood stock to be grown in oyster bags within the Noosa River as part of oyster gardening 5.1. Seeded Oyster Cultch, unseeded oyster cultch and/or live oysters are to be placed across the crest of the Module Designs
stability and suitability prior to construction project (with permit). rock substrate and would typically extend down the batters of the rock substrate. Seeding of areas in close
- Individual larger rocks may add to rugosity and may be incorporated provided that it fits within proximity to the seabed is to be avoided.
the profile of the reef patch and achieves good interlocking. 3. OYSTER REEF SUBSTRATE 5.2. Seeded Oyster Cultch and/or Live Oysters are to be placed as a single layer. Stacking or layering of cultch is DRAWING No. REVISION:
2.1.2. Rock to be igneous or metamorphic rock suitable for use in the marine environment. Rock to be sound, 3.1. A rock only substrate or a composite substrate of rock (as specified) mixed with cured oyster shell may be to be avoided. (Target placement volume of 5kg/m2/ with maximum 10kg/m2/.) NROR-2021-02 A
hard, durable and angular. Rock to be clean and free of topsoil and organic matter. used as a restoration substrate. 5.3. Seeded Oyster Cultch and/or Live Oysters are to be placed by hand into voids within rock substrate and
2.1.3. Rock characteristics to be in accordance with table below. 3.2. The composite substrate to be up to 10% shell to ensure substrate stability is maintained. interlocked as far as possible to limit loss from the structure. DRAWN : SK CHECKED :BC APPROVED :AJ
3.3. Oyster shell volume in composite may be increased to 20% in lower flow locations, subject to certifying 5.4. Placement to target more protected areas (less exposed to wave and current) preferentially.
engineer's approval. A higher component of shell may be considered subject to constructability and
RPEQ 2876
monitoring outcomes.
SIZE: A3 SCALE : A3 DATE : 05 Aug, 2021
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