locations within the AQMA which are likely to fail the 1- hour objective. These sites are , , and Roseburn Terrace/Street junction. Therefore, the will need to be amended to take account of a failure to meet the 1–hour objective and the new Action Plan will need to reflect this. Real Time Monitoring The real-time monitoring stations are set back from the roadside and are not in a canyon or junction location, which is why concentrations at these sites are much lower compared with passive diffusion tube monitoring. This data is seen below in Table 3. The passive diffusion tube monitoring represents likely exposure at the facades of residential tenement property. Table 3: Real -time monitoring nitrogen dioxide concentrations (g/m3). Location 1999 2000 2001 2002 2003 2004 2005 2006 2007 Gorgie Mean /m3 42 38 40 38 39 37 34 41** 40 Number of 0 0 0* 0 0 0 0 0 0 exceedences Haymarket Mean /m3 38 37 42 42 41 37 38 39 42 Number of 0 0 10 0 0 0 0 0 1 exceedences Queen St/ Mean /m3 42 38 39 44 41 37 35*** Number of 0 0 6 0 0 0 0 exceedences
locations within the AQMA which are likely to fail the 1- hour objective. These sites are , , and Roseburn Terrace/Street junction. Therefore, the will need to be amended to take account of a failure to meet the 1–hour objective and the new Action Plan will need to reflect this. Real Time Monitoring The real-time monitoring stations are set back from the roadside and are not in a canyon or junction location, which is why concentrations at these sites are much lower compared with passive diffusion tube monitoring. This data is seen below in Table 3. The passive diffusion tube monitoring represents likely exposure at the facades of residential tenement property. Table 3: Real -time monitoring nitrogen dioxide concentrations (g/m3). Location 1999 2000 2001 2002 2003 2004 2005 2006 2007 Gorgie Mean /m3 Number of exceedences 42 0 38 0 40 0* 38 0 39 0 37 0 34 0 41** 0 40 0 Haymarket Mean /m3 Number of exceedences 38 0 37 0 42 10 42 0 41 0 37 0 38 0 39 0 42 1 Queen St/ Mean /m3 Number of exceedences 42 0 38 0 39 6 44 0 41 0 37 0 35*** 0
airqualityactionplanrevised2008.docx