California regulations require any person intending to apply any pesticide toxic to bees to a blossoming plant to check for apiaries within one mile of an application site.  Advisors, growers and applicators can now check for apiaries on BeeWhere.  Beekeepers are required by law to register their hives.  During registration, beekeepers choose if they would like to be notified, and how they want to be notified (phone, email, or anonymous email).  

California Code of Regulations 6654 in summary: 

If you use pesticides toxic to bees on a blosoming plant, you need to notify beekeepers who have hives within a ONE (1) mile radius of the application site at least 2 days in advance.  Please provide the following information when notifying:

Time
Place
Crop
Acreage
Method of Application
Pesticide
Pesticide Dosage

 

Log in to beewhere.calagpermits.org using your same username and password for CalAgPermits.  BeeWhere DOES NOT notify the beekeeper, only provides the contact information for the Grower/Applicator to do the notification.