OH WOW, how many treatments? We only had one to toast ours. That kinda resembles my Japanese Maple.
The above photo shows what happened after just ONE application of Imprelis to my neighbor's yard. It then migrated down into my property after normal rainfall that May. His property is a couple feet higher elevation than mine. It was applied with the correct ratio according to the LCO's records back in May 2011. Amazingly strong chemical. My damage could not have been worse if you directly poured a gallon of Roundup total herbicide on top of my trees. Complete devastation.