At a concert last week at the National Theater (Richmond, VA), the sound level (using AudioTools app) was >100 dBA for sustained periods of at least 30 minutes. At least twice. Max was 108 dBA. Even given the inaccuracy of the app, that's pretty @$)(@*#&$^ loud.
My husband and I left early, and vowed never to go to that venue again (this was the second time we had been blown away by the volume; first time we thought it was just a f(the band).
Trying to figure out how to report this....there were people working in the place.