The Bizniz Courier reports:

[The Music Hall Revitalization Corp.] wants the city to install buffers to protect Music Hall from vibrations from Cincinnati's new streetcar that will pass outside the structure. The nonprofit's engineering tests indicate those buffers will cost $75,000. MHRC also wants the city to place $150,000 in an escrow account in case it's needed to address further vibration problems caused by the streetcar.

This report indicate however, the streetcar should not have an impact greater than what already exists. This guy says some towns are having issues with their streetcars being too unobtrusive!
Another opportunistic money grab attempt?