This might be nothing, but...

I'm just wondering why there are 12 industrial tanks parked outside the old
site of Hangars Cleaners on Fidelity Street in Carrboro, all containing dirt that
smells like cleaning fluid.

I understand that Hangars is supposed to be the "green" alternative to
drycleaning (using some C02 alternative to Perchloroethylene) that was developed by folks in the Reasearch Triangle. So why does all this dirt need to be removed from the site? Where is it going?

An inquiry to the town planning department might be in order.