Wambo Coal AEMR 2010-2011 - Peabody Energy

2010-2011 AEMRthe wind direction on the 28/10/11 waspredominately from the south and the southeast, averaging 1.36m/s, with a wind gust up to4.2m/s. HV02 is located south of the mine andtherefore under these metrological conditions isconsidered outside the influence of WCPLmining activities.3.2.2.2 PM 10Four real-time TEOM PM 10 units were in operationduring the reporting period as part of the air qualitymonitoring program:1. AQ01 – Coralie2. AQ02 – Wambo Road3. AQ03 – Thelander4. AQ04 - MullerEach TEOM PM 10 unit records the PM 10 particulatesevery 15 minutes and calculates the 24 houraverage, which is compared to the relevant criteriamentioned above. Units AQ01, AQ02, AQ03 andAQ04 had a capture rate of 87%, 96%, 99% and96% per unit respectively. Intermittent powerfailures and instrument malfunctions were identifiedas the primary cause of equipment failure. A faultyair conditioning unit for AQ01 also contributed toshort term periodic unit failure. All TEOM PM 10 unitshave power surge protection devices fitted to protectagainst power surges. The locations of these TEOMPM 10 units are shown in Figure 3.1.54.9g/m 3 on the 05/01/11 and 04/02/11respectively. This is in contrast to a total of sevenexceedances of the daily 50g/m 3 limit on at AQ03during the previous reporting period. A review ofmeteorological conditions for both days indicatedthat:the wind direction on the 05/01/11 waspredominately from the south east with anaverage wind speed of 1.52m/s. HV03 is northwest of WCPL mining operations, thereforewithin the influence of WCPL mining activitiesunder these meteorological conditions.However, a review of the daily results fromAQ04 recorded a much lower result of27.3g/m 3. AQ04 is located approximately1.5km north east of AQ03 (see Figure 3.1).the wind direction on the 04/02/11 waspredominately from the south west, with anaverage wind speed of 1.8m/s. HV03 is northwest of WCPL mining operations, thereforeoutside the influence of WCPL mining activitiesunder these meteorological conditions. Inaddition, a review of the daily results fromAQ04 recorded a much lower result of28.4g/m 3Results recorded from the PM 10 units are illustratedin Figure 3.10a-d below and tabled in Appendix2B.The PM 10 annual average concentration at all fourmonitoring locations did not exceed the annualaverage criteria of 30 g/m 3 limit on privately ownedland during the reporting period.There were only two exceedances of the daily50g/m 3 limit on privately owned land at AQ03during the reporting period of 57.3g/m 3 andPage 42