In June 2019, Villi hired a commercial environmental assessment company to conduct an evening noise survey in his apartment to find out how much noise was being generated by the exhaust fan in the electrical room.
The assessment found that the fans came on several times an hour for about four minutes at a time, 24 hours a day. The noise levels noticeably increased in the entire apartment and created an annoyance that needed to be addressed and controlled.
Further, the assessment cited design plans for the electrical room that Villi obtained, which showed that a suspended ceiling was to be installed in the room to dampen the noise, but it was never done.