Removing 10pm-7am noise ban on P21-0376 project in Vista, CA requires setting a noise threshold such that the residents around can have a good sleep in the night. 

WHO had studies and guidelines on noise level in the night for sleep. It states that 30dB is the threshold for an undisturbed sleep. We demand this threshold to be established among the backyards of the most impacted families, at the second story height.

We require the noise threshold in backyard at second story height is because many families do not have AC installed. We open our windows during the summer night to receive cool air.