Q:

Recording in an underground parking lot

There is a shoot happening in an underground packing lot with a low cement ceiling and a cement floor as well as a low end hum that will be constant in the background. The genre is a crime drama where there is a lot of yelling and screaming. My fear as I have encountered this before is distortion and muddiness of the dialogue due to the acoustic environment. 
I have recommended a pad of about -15 to -20dB with a hyper-cardiod mic to record the close and medium shots with radio mics for the wide shots. 
What other recommendations might you have in relation to such a location? 

A:

Eek... I think you've recommended everything thats possible. 
I would ask for a few takes of wild tracks of wide shots and grab an impulse response recording of the location incase you need to get the actors in for ADR.
Other than that good luck! :)

