Road Roulette: airborne asbestos fibres still float over Ewingar area

 

overall evidence suggests there is no safe level of asbestos exposure

US National Cancer Institute

 

The NSW Office of Environment and Heritage has ordered the creation of a Remedial Action Plan in relation to gravel roads containing chrysotile asbestos (a Class1 human carcinogen) in the Ewingir area -  indicated in red on the map above.

 

Chrysotile and tremolite asbestos naturally occur in a number of areas of regional New South Wales. A number of former mine sites extracted asbestos deposits at Baryulgil (chrysotile), Barraba/Woods Reef (chrysotile), Orange district (tremolite asbestos), Gundagai district (actinolite asbestos) and Broken Hill district (chrysotile) between 1880 and 1976. [WorkCover Asbestos Blueprint November 2011]

 

In this recent instance, Clarence Valley Council’s problem stems from road fill material excavated from its own Taylor’s Quarry. Asbestos fibres taken from rock at this site average 0.22mm in length.

 

Council used contaminated gravel on public roads and, in the role of private contractor, deposited this gravel on private property.

 

Once asbestos was discovered in gravel road works in 2009 Council promptly sealed approximately 4 kilometres of road/road shoulder area. Tests carried out in this period on a number of roads (some of which were heavily compacted in preparation for sealing) showed airborne asbestos levels between less than 0.01 fibres/ml to 0.01 fibres/ml.

 

In 2010-11 Council went on to seal approximately 6 kilometres of similarly affected road.

 

So far this year it has sealed only 1.7 kilometres and states it intends to seal another 4.3 kilometres by the end of the 2012-13 financial year.

 

That appears to leave somewhere between 34-44 kilometres of gravel road still potentially raising fine airborne asbestos particles on any given day.

 

Council apparently does not intend to complete road sealing until sometime within the next five years.

However in November 2012 council management does not appear to have made elected members of Clarence Valley Council aware that the National Occupational Health and Safety Commission, whose figures it quoted, is careful to point out that its first Control Level for Asbestos set at 0.01 fibres/mL of air is not a health-based standard.

 

I’m not so sure that the good people of Ewingar will continue to agree with the slow pace of remedial road works, once the full implication of the recent ABC TV program Devil’s Dust sinks in.

 

To date no safe level of asbestos exposure for lung cancer or mesothelioma has been identified [NSW Work Cover 2008].

It can be caused by very brief intense exposures whether occupational, domestic or recreational, and by lower-level environmental exposures – sometimes after exposures which are very short – a day – or very slight……..any of the groups of asbestos fibres to which the plaintiff was exposed either alone or in combination with others could have caused his disease.

[High Court of Australia, Heydon J in Amaca Pty Ltd v Booth; Amaba Pty Ltd v Booth [2011] HCA 53 ]

Most instances of non-occupational asbestos exposure occur during home renovations and car maintenance [The Australian Mesothelioma Registry Newsletter 1st Edition - October 2012].

 

According to the NSW Workers' Compensation Dust Diseases Board, the Asbestos Education Campaign 2012 will be launched at Customs House Square, opposite Circular Quay, in Sydney today at 11:45 am to mark the commencement of National Asbestos Awareness Week.

Background

 

Clarence Valley Council Investigation report - asbestos contaminated gravel

Asbestos poses a risk to health by inhalation whenever asbestos fibres become airborne and people are exposed to these fibres. Accordingly, exposure should be prevented. [NOHSC Australia 2005]

 

By 2030 the number of asbestos deaths

in Australia is predicted to reach 60,000,

equalling the number of Australians

killed in the First World War

[ABC TV Devil's Dust, November 2012]