Annual Report 2010-2011 National Environment Protection Council
Tabled paper 1729
Tabled Papers for 11th Assembly 2008 - 2012; Tabled Papers; ParliamentNT
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National Environmental Protection Council annual report 2 0 1 0 2 0 1 186 Q ld A IR T O X IC S PART 2 ASSESSMENT OF NEPM EFFECTIVENESS The Air Toxics NEPM has been effective in providing an impetus to investigate available data, such as the National Pollutant Inventory and the Air Emissions Inventory for the South-East Queensland region, to identify the locations most likely to experience significant population exposure to elevated ambient concentrations of air toxics. Investigations in the 200506 reporting period have identified two types of locations in Queensland, being proximity to major roads and industrial sites, as having the most potential for significant population exposure to air toxics, and from which stage 2 representative sites have been identified. Identification of sites The analysis for identification and prioritisation of stage 1 and stage 2 sites, as required by the NEPM, was limited to the populous areas of South-East Queensland. Two types of locations were identified as having the most potential for significant population exposure to air toxics: built-up residential areas close to heavily trafficked roads with significant congestion problems (e.g. Woolloongabba); and built-up residential areas close to major petrochemical industries (e.g. Wynnum). Table 1: Stage 2 sites and proposed monitoring program Location of stage 2 Sites Air toxics with possible elevated levels Air toxics to be monitored Proposed timeframe for monitoring Estimate of size of population likely to be exposed and identification of susceptible groups Woolloongabba Benzene, toluene, xylene, formaldehyde, benzo[a]pyrene Benzene, toluene, xylene, formaldehyde, benzo[a]pyrene 2012 Residential population of 4000; employed population of 10,000; inner city close to major roads and freeway Wynnum Benzene, toluene, xylene, formaldehyde, benzo[a]pyrene Benzene, toluene, xylene, formaldehyde, benzo[a]pyrene 2013 Residential population of 10,000; close to major petrochemical industries Reporting of monitoring of air toxics Jurisdictions are required to submit a report, in accordance with clause 13, of the reporting year ending 31 December 2010. This includes results of desktop analysis identifying sites, any monitoring that has taken place, and assessment and action taken to manage air toxics (where exceedances have been reported). Although DERM did not conduct any air toxics monitoring at stage 2 sites in South-East Queensland, NEPM-compliant monitoring of benzene, toluene, xylenes, formaldehyde and polycyclic aromatic hydrocarbons was conducted at five locations in Gladstone using a one-day- in-six sampling cycle between November 2008 and July 2010. Results covering the entire monitoring period are provided below. Levels of benzene, toluene and xylene were also monitored using an alternative Differential Optical Absorption Spectroscopy (DOAS) technique at ambient air quality monitoring network sites at Springwood in South-East Queensland and in central Gladstone. The primary air toxics emission source at the Springwood site was motor vehicles. Results from these monitoring sites for the 2010 year are also provided below. Data collected (Tables 2 to 6) indicate that levels in Gladstone and Springwood are well below the Air Toxic NEPM investigation levels.