Did you think to call the Atherton police?

8.16.030 Basic noise regulation.
Except as otherwise permitted under this chapter, no person shall cause and no property owner shall permit on such owners’ property, a noise produced by any person, machine, animal or device, or any combination thereof, in excess of the sound level limits set forth in this section to emanate from any property, public or private, beyond the property line. Any sound in excess of the sound level limits set forth in this section shall constitute a noise disturbance. For purposes of determining sound levels, sound level measurements shall be made at any location on the receiving property.

Sound Level Limits

7 a.m. to 10 p.m.
60 dBA
10 p.m. to 7 a.m.
50 dBA
A. In the event the alleged offensive noise contains a steady, audible tone, such as a whine, beating, pulsating, throbbing, or hum, the standards set forth in Section 8.16.030 shall be reduced by five dB.

B. In the event the ambient sound level equals or exceeds the sound level limit then the limit shall be five dBA over the ambient. (Ord. 509 § 1 (part), 1999)

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