I recall going round and round with one Air Pollution permit person for over 2 years. We finally called a consultant who reviewed MY work and couldn't figure out what their problem was with issuing the permit. We ended up scheduling a conference meeting with her boss. I brought boxes and boxes of shipping receipts, processing records, etc. plus the variations of permit applications, engineering calculations etc. to demonstrate we were way below needing any air pollution controls for the device in question.
His response? Why had we applied for the permit since the source was not significant? As calmly as I could reply I explained it was his underling that demanded the applications and then responded with constant refusals, instead of a non-signifanct source variance. He tried to defend this nut of an employee, but I simply said we looked forward to the variance letter and picked up our stuff and walked out.
They had all our documentation in their records, we used their engineering formulas etc. They didn't have a leg to stand on.