Dear thoughtless neighbor,
You have your yard service come out at 7 AM on every Saturday and I have put up with the endless leaf blowing for months. Get them a rake and a broom. But you topped it off today, Sunday, by having your "contractor" show up before 8 AM to set up power tools.
There is a noise ordinance in Pleasanton and I will have the police department remind you of it next weekend. NO NOISE at those decible levels before 9 AM on Sat, or before 10 AM on Sunday. And if your so-called contractor is really licensed he cannot do work like that on weekends at all.
I have tried talking nicely with you. I am done.