List of external phone calls Katherine Hoag participated on during the AZ RH comment period

To: Tom Moore of WRAP
Date: January 29, 2013
Subject: IMPROVE Data	
Katherine Hoag and Tom Moore had a phone conversation about work WRAP has done in investigating the causes of coarse mass and fine soil emissions. Tom sent additional information in a subsequent email on 1/29/13.

To: Tom Moore of WRAP
Date: February 11, 2013
Subject: IMPROVE Data	
Katherine Hoag and Tom Moore had a phone conversation covering the following topics:
   * Differences between IMPROVE data from different websites
   * Tools to extract monitoring data on the WRAP TSS website
   * Differences in datasets on the WRAP TSS website
   * Other WRAP documents on the causes of haze

To: Ryan Templeton (ADEQ)
Date: February 2013
Subject: Trend analysis method
Katherine Hoag returned call to discuss ADEQ's questions about alternate trend analysis methods to show sensitivity of RHR methods to interannual events. No specific advice of what method to use or not use was given. Katherine did suggest that whatever method is chosen, the agency should be clear about the assumptions inherent in the statistical methods and any strengths or weaknesses it has given a certain type of dataset, and that the method should be well cited in their submittal.


