I think Q3 was a one-off. Unquestionably, an excellent quarter, but they basically said in the CC it was due to one time stimulus spending funded waste processing batches, and does not get repeated.
And, there is the big macro worry: PESI's life blood is from DOE funded cleanup programs. Of course Killer Perry has told us that he will cut federal spending by eliminating "right away" the DOE if he gets elected (and he can remember it).
Then there is a coming budget debate -- if they go to sequestration, DOE loses close to 10% of its funding without discussion. Hard to see how that can be good for PESI. If they actually work out a deal, then DOE could lose a lot more. Think about it: these cleanup programs always are discretionary (how many decades did the Hanford cleanup wait?), with limited constituencies benefitting. They are not like ethanol subsidies that benefit those important Iowa Caucus voting farm communities, or defense programs, like the F-35, that somehow must be designed and built in 48 out of 50 states. I think PESI gets the short end from the coming budget axe. Could get ugly.