Clarence Valley 2019: keeping the Clarence River Estuary healthy for future generations

“like other heavy fabricating sectors shipbuilding involves the use of materials and manufacturing practices that can impact on the environment, can contribute to climate change” [OECD Council Working Party on Shipbuilding (WP6), November 2010]

“Shipyards are dangerous construction zones with many worker hazards. Shipbuilding, repair, cleaning, and coating use toxic chemicals and hazardous or flammable materials. These activities also can pollute water directly or through runoff. Repairs may require emptying dirty water from a ship’s ballast and bilge tanks into the surrounding waters….. Shipbuilding and ship repair use toxic chemicals that include chromium, copper, lead, and nickel. Ship cleaning activities use chemicals that include copper, hazardous or flammable materials, heavy metals, and solvents. They release lead, particulate matter, volatile organic compounds, zinc, and other air pollutants.” [NIH U.S. National Library of Medicine, Boats & Ships, retrieved 18 February 2019]

If it wasn’t bad enough that barely two years ago Lower Clarence communities still had a flimflam man and then a set of dodgy companies (mentioned in a NSW Independent Commission Against Corruption investigation in 2018) trying to push for large scale industrialisation of Clarence River estuary – now Clarence Valley Council apparently attracted by the lure of vacant crown land up for grabs appears to be joining the push to industrialise-and-be-damned if these little gems in its “Clarence Valley Regional Economic Development Strategy 2018 -2022” are any indication.

These are excerpts from that document:

Clarence Valley’s key endowments lie in its coastal, riverine and hinterland amenity; arable soils and favourable climate; access to Sydney and Brisbane via the Pacific Highway; and the ability to bring new industrial land to market cost effectively…..

Industrial Land -The Clarence Valley has seven industrial estates open for business and far more potential development sites compared with neighbouring councils…..

Sustaining a ready supply of zoned and serviced industrial land is a strategic priority for supporting growth in these specialisations, with marine precinct proposals……

•Meet emerging industrial land use opportunities in a timely way •Develop a marine precinct proposal •Develop a project portfolio of enabling infrastructure for industrial sites, including the marine precinct proposal…..•Develop a Port of Yamba Strategy…….

Develop a marine precinct proposal

•Develop a project portfolio of enabling infrastructure for industrial sites, including the marine precinct proposal

•Build on the Transport Precinct Feasibility Final Report to develop road investment priorities

•Review and complete land use planning through collaboration with neighbouring councils

•Partner with local industries and training providers to align training courses to industry’s needs

•Advocate for a marine manufacturing SkillsPoint

•Identify and cost options for better Pacific Highway connections

•Advocate for progress on strategic priorities for the Port of Yamba and Summerland Way

•Develop a Port of Yamba Strategy

•Develop Yamba Road & Harwood Road business cases…..

The Clarence River estuary covers an 800 sq. kilometres floodplain and key environmental indicators for this estuary’s health include water quality, riverbank vegetation, the number and distribution of fish species, as well as the presence of macroinvertebrates and plankton.

The estuary is already beginning to struggle under the weight of human activity, including marine activity. A fact it would seem that Clarence Valley Council ignores in its development strategy.

It is a fact that estuary communities cannot afford to ignore if they wish to preserve the aesthetic, cultural, social and environmental amenity which supports both community life and the local economy.

In 2016-2017 a study of six NSW ports was undertaken and published in PLoS One and online in December 2017 as “Water quality assessment of Australian ports using water quality evaluation indices”.

With regard to the Port of Yamba in the lower Clarence estuary the study recommended regular monitoring and management of port activities accounting for both biological and chemical toxicological profiles of the discharging activities.

It did so for the following reasons:

* The Port of Yamba has standard levels of Dissolved Oxygen according to ANZECC guidelines. However. the amount of fecal coliforms was significantly higher in the water of the port area than the corresponding background samples, which clearly indicates the impact of the fishing fleet and recreational boating on the port environment.

* Very high concentrations of iron were found in the port water, the maximum concentration of lead in the water exceeded the ANZECC (0.0022) guidelines with all the background samples had much lower concentration of lead compared to the port area and, the maximum concentration of copper in the water was much higher than ANZECC guidelines and exceeded other international guidelines at (0.04 mg/l) in Port of Yamba.

* The mean concentration of copper also exceeded the ANZECC guidelines. When it came to zinc levels were low except in the port area which contained very high concentrations of zinc, which exceeded the guidelines. Concentration of cadmium and cobalt were within the ANZECC guidelines.

* Overall the Port of Yamba portrayed high contamination for all standard guidelines when it came to water quality – the port area has water quality of medium contamination and one site has high contamination.

Clarence Valley Council itself admits that the entire estuary is already under stress in its Report Card 2013:

“Water quality was poor in the estuary throughout the study, with the region around the tidal limit with consistently the worst water quality of the Clarence River 

reflecting the freshwater and tidal inputs at these sites. Estuary tributaries, particularly Swan and Sportsmans Creeks and the Coldstream River were in very

poor overall condition receiving a grade of F. These systems had consistently poor water quality that contributed nutrient rich, low oxygen and acid water

to the Clarence River following flooding.

Concentrations of nitrogen and phosphorus consistently exceeded the guideline values throughout the study at all sites. Very high nitrogen concentrations were

recorded in estuarine reaches following flooding. There were no algal blooms recorded during the study. However, algal concentrations were consistently

above the guideline value in estuarine reaches.

The Broadwater and Wooloweyah coastal lagoons both had very poor water quality, with high algal and nutrient concentrations and turbidity, and low dissolved oxygen values consistently exceeding a number of water quality guidelines. The Broadwater had better riparian condition relative to Wooloweyah that improved its overall grade.

Riparian condition was generally low from a poor diversity of native vegetation, reduced vegetation structure and small isolated pockets that were poorly connected to other native vegetation. Reaches showed evidence of eroding river banks and sediment deposited in the channel. Estuarine reaches were often dominated by riverbanks with little or no vegetation present, leading to very poor condition grades.”

The tidal water exchange will not protect the lower estuary from a spreading loss of water quality and increased levels of pollution once industry begins to expand along its foreshores and clusters of marine businesses such as shipbuilding and repair are further developed. 

There will be a tipping point that once reached will be hard, perhaps even impossible, to reverse.

This is something that Lower Clarence communities need to consider before council goes too far down this path which leads away from a healthy estuary for future generations.