Portola Music Festival

The event primarily features electronic dance music.

Limited to people over the age of 21, it is intended to "present electronic music in an adult way".

[3][4] The event received noise complaints from residents of the city of Alameda which is located across the San Francisco Bay from Pier 80.

[5] The city requested that the festival be discontinued or moved to a different location due to the various noise complaints from its residents.

However, the dBA scale, A-weighting, attenuates low frequency audio by as much as 40 decibels, implying the actual noise level at the lowest audio frequencies could have been as high as 101 decibels.