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Introduction and Background of "The River, the Bay and the Strait" public forum

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Information about Introduction and Background of "The River, the Bay and the Strait"...

Published on October 15, 2008

Author: greatermary

Source: slideshare.net

Description

Presentation at "The River, the Bay and the Strait" public forum on 5 October, 2008 in Hervey Bay.
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Introduction to “The River, the Bay and the Strait” Public Forum 5 October 2008 Does SEQ need a new dam? Estuaries, freshwater & today’s presentations

Does SEQ need a new dam?

Estuaries, freshwater & today’s presentations

Where the decision making process is at… QWI have provided Supplementary Environmental Impact Statement to Qld Govt Now with Queensland Coordinator General Supplementary EIS was “exposed” to the public Once Queensland Coordinator General hands his report to Peter Garrett, the Minister has 30 working days for a decision Four of seven Matters of National Environmental Significance (MNES) Decision is possible by Christmas??

QWI have provided Supplementary Environmental Impact Statement to Qld Govt

Now with Queensland Coordinator General

Supplementary EIS was “exposed” to the public

Once Queensland Coordinator General hands his report to Peter Garrett, the Minister has 30 working days for a decision

Four of seven Matters of National Environmental Significance (MNES)

Decision is possible by Christmas??

Does South East Queensland need a new dam? NO!

Reason 1: The water isn’t needed From 2008 SEQ Water Strategy document 2006 2056 Prediction of Water SEQ will use We are paying for a water surplus

Reason 2: There are better alternatives Meet domestic and business water needs with less water (I) Reduce water use in power generation: Shift to dry cooling in power stations (II) Capture of stormwater eg Orange Recycling Desalination (III) Other methods Supplementary EIS has not addressed these possibilities adequately

Meet domestic and business water needs with less water (I)

Reduce water use in power generation: Shift to dry cooling in power stations (II)

Capture of stormwater eg Orange

Recycling

Desalination (III)

Other methods

Alternative I: smart approach Meet domestic and business water needs with less water Elements of proposed program and water saved (Mary Council of Mayors report, 2007) Negative Greenhouse Gas Emissions Average unit cost: $1.15 per 1000 L TOTAL ADDITIONAL SAVINGS 190,000ML/a

Negative Greenhouse Gas Emissions

Average unit cost: $1.15 per 1000 L

Alternative II: expanded DM in the power sector In SEQ, electricity generation accounts for over 6% of total water consumption The majority lost as evaporation in cooling towers Alternative to evaporative cooling - “Dry Cooling” or “Air Cooling” Similar concept to car radiator ~95% reduction in water use Savings ~40,000 ML/a Unit cost ~ $1.08 per 1000 L Source: Qld Govt Dept. of Energy

In SEQ, electricity generation accounts for over 6% of total water consumption

The majority lost as evaporation in cooling towers

Alternative to evaporative cooling - “Dry Cooling” or “Air Cooling”

Similar concept to car radiator

~95% reduction in water use

Savings ~40,000 ML/a

Unit cost ~ $1.08 per 1000 L

Alternative III: Desalination This was the main alternative that Queensland Government compared with the dam Some things to know: Energy use assumed by Government is about 34% higher than Kwinana plant in Perth Cost is of desal inflated, cost of dam deflated Greenhouse gas emissions are less than proposed dam (by up to 190,000 tonnes CO2 per year) Reliable process that can be operated when needed Mary council report recommended desal as a “readiness option”, unit cost approximately $2.39 per 1000 kL

This was the main alternative that Queensland Government compared with the dam

Some things to know:

Energy use assumed by Government is about 34% higher than Kwinana plant in Perth

Cost is of desal inflated, cost of dam deflated

Greenhouse gas emissions are less than proposed dam (by up to 190,000 tonnes CO2 per year)

Reliable process that can be operated when needed

Mary council report recommended desal as a “readiness option”, unit cost approximately $2.39 per 1000 kL

Side by side comparison Dry cooling (II) Desal (III) Dam Smart approach (I) Cost (per 1000 L) Reliability GHG (cars) Dam has worst social and environmental impacts $1.15 Very High 142,000 cars off the road $1.08 $2.39 $3.38 Very high Low Very high No estimate available Up to 50,000 new cars Up to 71,000 new cars

There is not a shortage of better alternatives But a shortage of political will to choose the best options from an economic, environmental and social point of view.

But

a shortage of political will to choose the best options from an economic, environmental and social point of view.

Photo Nikki Michail South Head of the Mary River

A brief introduction to estuaries, why they need rivers and what to expect from today’s presentations Photo Stewart Riddel

What to expect… Brief Introduction to estuarine ecology Role of freshwater Role of nutrients, salinity etc Impacts on the plants and animals and their interactions (food web, behaviours etc) Brief summary of QWIPL and Qld Government views Explanation of how the presentations today relate to the estuarine and river system

Brief Introduction to estuarine ecology

Role of freshwater

Role of nutrients, salinity etc

Impacts on the plants and animals and their interactions (food web, behaviours etc)

Brief summary of QWIPL and Qld Government views

Explanation of how the presentations today relate to the estuarine and river system

Estuaries & Rivers Estuaries are the downstream reaches of rivers where they enter the coastal ocean and are influenced by tidal motions. An estuary isn’t an estuary without freshwater flow Estuaries produce approximately 75% of Queensland’s seafood Estuaries are some of the most productive ecosystems on the planet We have a lot to learn about how they interact Great Sandy Strait is unique & internationally significant So what do QWIPL and Qld Government have to say about this?

Estuaries are the downstream reaches of rivers where they enter the coastal ocean and are influenced by tidal motions.

An estuary isn’t an estuary without freshwater flow

Estuaries produce approximately 75% of Queensland’s seafood

Estuaries are some of the most productive ecosystems on the planet

We have a lot to learn about how they interact

Great Sandy Strait is unique & internationally significant

Currently, the supplementary EIS says: “ The Integrated Quantity and Quality Model (IQQM) for the Project has demonstrated the reliability of the system to deliver the legislated requirements of the Mary River WRP.”  “ overall it is concluded that the dam will not have any substantial impact upon the values of the Great Sandy Strait Ramsar wetland.  The impact is expected to be negligible.” BUT.. Many important issues not addressed

“ The Integrated Quantity and Quality Model (IQQM) for the Project has demonstrated the reliability of the system to deliver the legislated requirements of the Mary River WRP.” 

“ overall it is concluded that the dam will not have any substantial impact upon the values of the Great Sandy Strait Ramsar wetland.  The impact is expected to be negligible.”

MORNING SESSION

Sediment Source: Beach Protection Authority, 1989 Transport paths , sediment source Mary river Fraser Island Continental shelf

Source:

Beach Protection Authority, 1989

AFTERNOON SESSION

Mangroves Seagrass Dugong Phyto- plankton Zoo- plankton Benthic fish Fish eating fish Seabirds Plant eating fish Zoo- planktivorous fish Prawns Crabs Mud eating fish Green turtles Benthic Invertebrates Micro-phyto -benthos Macro- algae Detritus Burnett Mary Region Coastal Food web Adapted from: Gehrke, P.C. 2007. A comparative analysis of coastal fishery food webs in the Great Barrier Reef region . CSIRO: Water for a Healthy Country National Research Flagship Whales?? Dolphins Loggerhead turtles

Key messages from today The flows from the river play a role that is complex, intricately balanced. Application of the precautionary principles requires the proponent to show they will “not have a significant impact” under the EPBC Act Presentations today aim to increase our understanding of this beautiful ecosystem With this knowledge our message to Garrett and Bligh will be even stronger We hope you leave today full of ideas for your own letters to decision makers and full of inspiration to save the Sandy Strait and the Mary River

The flows from the river play a role that is complex, intricately balanced.

Application of the precautionary principles requires the proponent to show they will “not have a significant impact” under the EPBC Act

Presentations today aim to increase our understanding of this beautiful ecosystem

With this knowledge our message to Garrett and Bligh will be even stronger

Key references Peirson, WL., Bishop, K., Van Senden, D., Horton, PR. and Adamantidis, CA., Environmental Water Requirements to Maintain Estuarine Processes (2002), Environmental Flows Initiative Technical Report Number 3, Commonwealth of Australia, Canberra. (available on internet) Beach Protection Authority Queensland (BPA) 1989, Hervey Bay Beaches , Beach Protection Authority, Queensland. Gehrke, P.C. 2007. A comparative analysis of coastal fishery food webs in the Great Barrier Reef region . CSIRO: Water for a Healthy Country National Research Flagship. (available on internet)

Peirson, WL., Bishop, K., Van Senden, D., Horton, PR. and Adamantidis, CA., Environmental Water Requirements to Maintain Estuarine Processes (2002), Environmental Flows Initiative Technical Report Number 3, Commonwealth of Australia, Canberra. (available on internet)

Beach Protection Authority Queensland (BPA) 1989, Hervey Bay Beaches , Beach Protection Authority, Queensland.

Gehrke, P.C. 2007. A comparative analysis of coastal fishery food webs in the Great Barrier Reef region . CSIRO: Water for a Healthy Country National Research Flagship. (available on internet)

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