Page 5012 - Week 13 - Thursday, 12 November 2009

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PM10

Only data classed as valid from the NEPM PM10 monitor is used to produce these tables. NEPM standard is 50μg/m3 for 24-hour average.

Table 2 - NEPM PM10 Monash

* = Current and further quarter, more data will be available later.

** = Insufficient data due to instrument failures and current year not complete.

(Additional graphs are available at the Chamber Support Office).

(2) I have been advised that in the second half of 2008 and the first half of 2009, due to a range of reasons, the HPS did not collect NEPM data for particulate matters PM2.5 and PM10. While there are usually some gaps in most data sets there are unusual gaps in the 2008 and 2009 data as highlighted by Tables 1 and 2 above.

Significant PM2.5 and PM10 data are missing for the following periods:

• PM2.5, 7 months (July 2008 to end of February 2009); and

• PM10, 7 months (November 2008 to beginning June 2009).

The data gaps result from a sequence of events commencing with the failure of the PM2.5 sampling monitor. The expansion of Goodwin Village and the subsequent relocation of the Monash station; the refurbishment of the Monash station roof to improve OH&S conditions for staff servicing the roof mounted monitors; and issues surrounding the refitting and failed calibration of the PM10 monitor, also added to the non collection of air monitoring data.

HPS has now completed the relocation of the Monash station and refurbished its roof. The various monitors have been refitted, calibrated and assessed as functioning correctly.

As a consequence of not collecting the air quality data for the specified periods, the ACT will not achieve all the targets for PM2.5 and PM10 in 2008 and 2009 set by the Ambient Air NEPM. The status in terms of data capture rates for PM2.5 and PM10 for the Ambient Air NEPM for 2008 and 2009 is:

• PM2.5 – not achieved in 2008 or 2009;and

• PM10 – achieved in 2008, will not be achieved in 2009.

It is regrettable that a complete set of measurements was not recorded for 2008 and 2009. However, the previous year’s trends indicate the ACT experiences a low number of exceedences per year. In the case of Particulate Matter the exceedences have been associated with wood smoke (home heating or bushfires) or dust storms.

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