Why we need a new woodheater standard. The estimated health costs of woodsmoke pollution is more than $8 billion just in NSW - more than $22,000 for every wood heater in the state.
The health costs are extremely high because research has shown there is no safe level of PM2.5 pollution, considered to be the most dangerous air pollutant, responsible for 10-20 times as many premature deaths as the next worst pollutant, ozone.
PM2.5 pollution from cars and sports utility vehicles was slashed by the development of new standards. Although adding about $980 to the price of the average diesel SUV, the latest Euro5/6 standards are considered well worth the $1.5 billion saving over the next 20 years in health costs for Australia A SUV travelling 20,000 km per year must emit less than 0.1 kg PM2.5.
Recommendations by the Australian Standards Committee (approved 15 votes to 4) to reduce wood heater emissions couldn't be implemented because they were vetoed by representatives of the Australian wood heating industry. After this veto, research to develop a new wood heater standard and real-life emissions test was abandoned.
As shown in the Briefing Woodsmoke_Discussion_paper_Nov2012 the current test for log-burning heaters does not reflect real-life emissions. Even a very low rating of 1 g/kg translates into average real-life emissions of 6.4 g/kg with emissions of 13.3 kg PM2.5 and estimated health costs of $3167 per year in Sydney.
Australia's real-life emissions tests were carried out in Launceston, after a $2 million woodsmoke education program. Knowing their emissions were being measured, the volunteers were keen to operate heaters correctly - many refuelled them in the middle of the night, to ensure they did not smoulder overnight. Even after spending millions on eduction, keen, motivated volunteers in Launceston could not achieve anything like the lab test emissions. The only realistic way to reduce emissions is therefore to develop a real-life emissions test and set a standard based on limiting health impacts to an acceptable level.
Other industries have co-operated by substantially reducing emissions, so the average brand-new wood heater in Sydney now emits as much PM2.5 pollution as 190 new diesel SUVs, and has estimated health costs of more than $4,000 per year - see the Briefing Woodsmoke_Discussion_paper_Nov2012 The latest NSW EPA emissions inventory show that, despite being used by only a small proportion of households in Sydney, wood heaters emit a whopping 51% of annual PM2.5 emissions in Sydney (compared to 14.4% for all on-road cars, trucks and other vehicles in Sydney)
Not allowing new log-burning heaters to be installed (until a new health-based standard has been developed) would cost $134 million, but save $2,206 million in health costs. Requiring existing wood heaters to be removed when houses are sold would cost just $36 million, but generate health benefits of $4,015 million - see Briefing Woodsmoke_Discussion_paper_Nov2012 Alternatives such as wood pellet heaters (with much lower real-life emissions) would be allowed.
The UN Environment Program (UNEP) recommends phasing out wood heaters in developed countries to reduce methane and black carbon emissions (which cause a substantial proportion of global warming as well as ill health)
The State Government has already adopted policies that do not allow log-burning heaters in Sydney's prestigious Oran Park and Turner Rd Growth precincts. Other Councils (such as Waverley and Holroyd) that have checked out the horrific statistics on the amount of pollution from current wood heater models, also do not permit new log-burning heaters to be installed.
Wood heaters produce many dangerous pollutants in addition to PM2.5, including PAH, which is linked to genetic damage in babies and also behavioural problems and reduced IQ when children start school. In developing countries, children whose mothers cook with wood (as opposed to kerosene) stoves, have reduced cognitive function and social skills
People and organisations who care about their health, or the health and IQ of their children, should therefore make their views known by taking part in the consultation process. Allowing new heaters that emit even 20 times as much pollution as the health-based standard for a SUV should not be considered acceptable, let alone 190 times as much (in Sydney) or 400 times as much (in colder areas that burn an average of 4 tonnes of firewood per year). Email firstname.lastname@example.org or fill out the online form by 30 November 2012. pointing out that the pollution from current Australian wood heater models is not acceptable. Therefore, until a new health-based standard has been developed, we should not allow new log-burning to be installed, and require existing ones to be removed when houses are sold.
NSW EPA Discussion paper: Options for wood smoke control in New South Wales - Discussion paper. State of NSW and Environment Protection Authority http://www.epa.nsw.gov.au/resources/air/WoodsmokeControlReport.pdf 2012.
Economic appraisal of wood smoke control measures. Available at: http://www.epa.nsw.gov.au/woodsmoke/smokecontrolopts.htm
The Australian wood heating indstry argues that this level of emissions is a perfectly acceptable standard to that could be introduce by the end of 2013. Any anything better would affect their profitiability.
With estimates that heaters rated 2.5 g/kg have real-life emissions of at least 7 g/kg (see Table from the Briefing _paper ), and estimated average health costs of more than $3,500 in Sydney and $1,700 in colder regional areas, is clear that AHHA, set up to represent the wood heating industry, considers its profits more important that people's health.
Table 1. Comparison of lab-test and real-life emissions for new heaters, estimated health costs for a heater installed in Sydney and in colder rural areas, and the number of Diesel SUV required to produce the same amount of annual emissions - details see the Briefing _paper
The NSW Economic Analysis and Dicussion paper provide estimates of the costs and benefits of variatious woodsmoke control option, shown in the table below. People and organisations who care about their health, should strongly support all options with large health benefits for minimal cost.
Table 2. Estimated health benefits and costs of woodsmoke control options in NSW
Source: Tables 26 and 28, AECOM Office of Environment & Heritage: Economic Appraisal of Wood Smoke Control Measures - Final Report, 29 June 2011