Just got off the phone with the people up there and was explaned the noise criteria in detail.
98db @ 15 ft from the exhaust exit
2/3rds of peak rpm used (8400 redline 5570)
92 db max while on track.
They have had some issues this year,so they are being more diligent right now as they get fined at least $1900 for every violation that is recorded by the local monitoring stations as required by the local authorities.
Anybody that is coming on the 11th that thinks they might have an issue might think about checking their cars noise level before the trip up there.