HVO 2009 Annual Environmental Management Report - Final

Coal & Allied – Hunter Valley Operations
elevated results on the 12/08/2009, 16/08/2009 and 28/08/2009, 15/10/2009 and 21/10/2009 occurred during
predominate north-westerly or north-north-westerly winds and therefore was likely influenced by other
sources. The elevated results on the 20/11/2009 during a strong westerly wind and therefore was likely to
have been influenced by HVO mining activities.
Long Point PM 10
The 24 hour PM 10 impact assessment criterion (50g/m 3 ) was exceeded on one occasion; recording
54.7g/m 3 on 23/10/2009. The elevated result on 23/10/2009 occurred during winds shifting from the north to
south and therefore was unlikely to have been influenced by HVO mining activities.
Maison Dieu PM 10
The 24 hour PM 10 impact assessment criterion (50g/m 3 ) was exceeded on five occasions; recording
57.9g/m 3 on 05/03/2009, 58.1g/m 3 on 28/08/2009, 57.2g/m 3 on 23/10/2009, 67.4g/m 3 on 20/11/2009 and
72.1g/m 3 on 08/12/2009. The elevated results on the 08/01/2009 and 05/03/2009 occurred during southeasterly
winds however elevated PM 10 results across the monitoring network indicate a regional dust event.
The elevated result on 23/10/2009 occurred during prevailing winds from the north and south-south-east and
therefore was unlikely to have been influenced by HVO mining activities. The elevated result on 28/08/2009
and 20/11/2009 occurred during strong north-westerly and westerly wind respectively and therefore was likely
to have been influenced by HVO mining activities.
Jerrys Plains School PM 10
The 24 hour PM 10 impact assessment criterion (50g/m 3 ) was exceeded on two occasions; recording
51.2g/m 3 on 15/09/2009 and 53g/m 3 on 08/12/2009. The elevated result on 15/09/2009 occurred during
mild south-easterly winds with upstream monitors also showing elevated results. Therefore dust levels and
therefore this site was likely influenced by other sources. The elevated result on 08/12/2009 occurred during
regionally high dust levels.
Kilburnie South PM 10
The DECCW 24 hour PM 10 impact assessment criterion (50g/m 3 ) was exceeded on one occasion; recording
58.4g/m 3 on 08/12/2009. The elevated result on 08/12/2009 occurred during regionally high dust levels and
therefore this site was likely influenced by other sources.
Warkworth School PM 10
The 24 hour PM 10 impact assessment criterion (50g/m 3 ) was exceeded on four occasions; recording
54.4g/m 3 on 15/09/2009, 66g/m 3 on the 23/10/09, 79g/m 3 on 20/11/2009 and 62g/m 3 on 08/12/2009. The
elevated result on 23/10/2009 occurred during southerly winds and therefore was unlikely to have been
influenced by HVO mining activities. The elevated result on 15/09/2009 and 08/12/2009 occurred during
southerly winds and therefore was unlikely to have been influenced by HVO mining activities. The elevated
result on 20/11/2009 occurred during strong westerly winds and therefore was likely to have been influenced
by other sources.
Wandewoi PM 10
The 24 hour PM 10 impact assessment criterion (50g/m 3 ) was not exceeded during 2009.
AEMR 2009 67