slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Agnes Water Desalination Project Preliminary Studies – Aquatic Ecology John Thorogood and Kylie McPherson PowerPoint Presentation
Download Presentation
Agnes Water Desalination Project Preliminary Studies – Aquatic Ecology John Thorogood and Kylie McPherson

Loading in 2 Seconds...

play fullscreen
1 / 14

Agnes Water Desalination Project Preliminary Studies – Aquatic Ecology John Thorogood and Kylie McPherson - PowerPoint PPT Presentation


  • 553 Views
  • Uploaded on

Agnes Water Desalination Project Preliminary Studies – Aquatic Ecology John Thorogood and Kylie McPherson. Adjacent to the existing water treatment plant Comprising: - A submerged offshore intake (600m off Chinamans Beach) - A submerged offshore brine

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Agnes Water Desalination Project Preliminary Studies – Aquatic Ecology John Thorogood and Kylie McPherson' - Solomon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
Agnes Water Desalination ProjectPreliminary Studies – Aquatic EcologyJohn Thorogood and Kylie McPherson
the proposed plant
Adjacent to the existing water treatment plant

Comprising:

- A submerged offshore intake

(600m off Chinamans Beach)

- A submerged offshore brine

outfall (800m off Chinamans

Beach)

Capacity – 2mL/day increasing to 12mL/day

The Proposed Plant
study methodology
Study Methodology
  • Review
  • Focused consultation
  • Field survey
the existing environment
The Existing Environment
  • ‘Oceanic’ water quality
  • Chinamans Beach characterised by surf, mobile sandy substrate, with rock out crops
  • Absence of tidal wetlands and subtidal seagrass
  • Significant reefs lie approx 60km offshore
slide5

Fisheries

  • Round Hill Creek is important for both recreational and commercial fisheries
  • Chinamans Beach supports recreational beach fishing
  • Trawlers (<6) operate offshore, targeting tiger prawns and saucer scallops
conservation significant habitat
Conservation Significant Habitat
  • Tidal waters are part of the Great Barrier Reef Coast Marine Park. Adjacent to Chinamans Beach. Designated ‘General Use Zone’
  • GUZ allows for ‘reasonable use, whilst still conserving these areas’
  • Waters offshore of Chinamans Beach are designated GUZ of Great Barrier Reef Marine Park
  • Waters offshore also lie within the Great Barrier Reef World Heritage Area
conservation significance cont
Conservation Significance cont.
  • Along with entire GBR – listed as a Wetland of National Significance and World Heritage Area
  • No RAMSAR site
  • No wetlands of state or regional significance
  • No Fish Habitat Area
  • No Dugong Protection Area
  • No seagrass
state coastal management plan
State Coastal Management Plan
  • Agnes Waters lies within the Wide Bay Coast Coastal Management Region
  • Draft Regional Coastal Management Plan under preparation
  • Current issues include: loss of habitat, impacts of urban development on coastal landscapes and beach protection zones, beach erosion and impacts of marinas and dredging
conservationally significant species
Conservationally Significant Species
  • Chinamans Beach is nesting site for marine turtles (nesting, October-March; Hatching, December-May)
  • Offshore waters comprise humpback whale migration corridor
permits
Permits
  • GBRMPA – GBRMP permit
  • Possible EPBC Act Referral
  • Marine Plants Permit - Unlikely
potential impacts
Potential Impacts
  • Construction Phase
    • Disturbance of nesting turtles
    • Disturbance of migrating whales (negligible impact)
    • Disturbance of fishers
    • Disturbance of beach and sea bed
    • Increased turbidity
potential impacts cont
Potential Impacts cont
  • Operation Phase

- Intake of Fauna (turtle hatchling) (no impact on

fisheries resources expected)

- Discharge of Brine (elevated salinity)

        • Modeling predicts <0.6g/L increase at 100m
        • Mobile species (fish, prawns, etc) will avoid waters of elevated salinity
        • Some change in community structure of immobile benthic fauna likely to close proximity of diffuser
mitigations
Mitigations
  • Construction Phase

- Construct pipelines in the winter months to avoid turtle nesting; or avoid any night work

  • Operation Phase

- Screened intake

- Effective diffusion of brine effluent

conclusions
Conclusions
  • Proposed site has low conservation significance with the notable exception of turtle nesting
  • Proposed site is physically robust
  • Predicted impacts considered reliable
  • Predicted impacts (after mitigation) are likely to be ecologically negligible and not significantly fisheries or conservation values