2009 California Food and Agricultural Code - Section 7601-7603 :: Article 4. Crop Seed Cleaning Business

7601.  Every person, before engaging for hire in the business of
cleaning crop seed, shall obtain a permit from the commissioner to
operate each separate portable seed cleaner which is being used for
the first time in the county.

7602.  Upon application by the owner for such permit or if the
commissioner deems it necessary to determine that the cleaner is free
from the seed of any pest, the commissioner may cause an inspection
to be made of the cleaner of each permittee.

7603.  The permit may be suspended or revoked by the commissioner at
any time the permittee does not comply with any of the provisions of
this division, or any regulations which are adopted pursuant to this
division by the director relative to preventing the dissemination of
the seed of any noxious weed pest.