Washington 2 is Cellular Market Area (CMA) 694. It's fairly large in land area. Looking on Google Maps it appears some of the populated places are Okanogan and Wenatchee if that helps any.
Assuming your profile location of Richland, WA is accurate, that's CMA 214. AT&T already owns both the lower B block and lower C block 700 MHz licenses there so I don't think your area is affected by this particular transaction.