— if you thought you heard an explosion this evening in the north shore area, you’re not alone. According to saugus fire department, the loud noise was caused by a turbine malfunction at the win waste plant on rt 107 in. Webthe saugus fire department is assuring residents who thought they heard a loud explosion monday night that no one was hurt and there is no danger to the public. The sound came from the win waste. Webthe boston municipal code sets standards for reasonable noise levels. It also sets maximum acceptable noise levels for different times of day. An unreasonable level of noise is: Anything louder than 50 decibels from 11 p. m. To 7 a. m. , or.