Real-Time Air Data Week of August 4, 2008

The real-time monitors will be moved around on a daily basis based on the location of work activities for the day.   

Click on the date below to view graphs showing the real-time air monitoring data for the week of August 4, 2008. 

Monday, August 4, 2008 - The data logger function on Air Monitors 1 and 4 did not record the half hourly averages. The graph was generated from hourly real time readings collected by AGC personnel. The internal clock on Air Monitor 6 was incorrect. The report generated lists sample points that are approximately 1 hour behind the actual times that the monitor was running. The times included in this report are the actual times that the monitor was running.  Air Monitor 2 had three half hour average readings recorded that exceeded the Action Level for that area. 

Tuesday, August 5, 2008 - The data logger function on Air Monitors 1 and 4 did not record the half hourly averages. The graph was generated from hourly real time readings collected by AGC personnel.  Six thirty minute averages were above the action level.  Water was being pumped from one area of the existing basin to another part of the containment area when these readings were taken.  No dust was visible during this period.  No additional dust control action was required.

Note: On August 4 and August 5, 2008, during the time period when action level exceedances occurred on the dust monitors, the contractor (SCE) had collected air lead samples in the immediate work area where the air monitor that had the exceedances was located. This additional sampling was something SCE did on its own, above and beyond what was required by the 100% Design. There was no lead detected in the samples that SCE collected on those two days indicating the dust levels observed did not result in a release of lead above detectable limits.

Moving forward, beginning August 14, 2008, we have started collecting both dust and lead samples (samples that will be sent into a lab) at each location where a dust monitor is located (we will refer to these as co-located samples). We are also going to use an analysis method for these co-located samples that will provide a detection level that will be similar to the detection level that is used for the perimeter high volume air samplers. This will allow us to compare the co-located sample results with the results that we obtain every six days from the perimeter high volume air samplers. Initially, we will use the data from the co-located samples to compare with the information being obtained form the dust monitors and as we move forward, the co-located samples will be helpful in providing data in the event that a future exceedence occurs at one of the dust monitors.
 

Wednesday, August 6, 2008

Thursday, August 7, 2008

Friday, August 8, 2008 - The data logger function on Air Monitor 4 did not record the half hourly averages. The graph was generated from hourly real time readings collected by AGC personnel. 

 

 

 

Page Last Modified Tuesday March 02, 2010 02:46:25 PM