2007 California Elections Code Article 2. Elections Official-ordered Recounts

CA Codes (elec:15610)

15610.  If no election contest is pending wherein a recount of the
ballots in a precinct has been or will be ordered, the elections
official may order that the ballots voted in the precinct be publicly
recounted if both of the following apply:
   (a) The elections official has reasonable cause to believe the
ballots in the precinct have been miscounted.
   (b) The elections official has examined, under oath, the precinct
board members or, in the case of ballots counted by a central
counting system, the counting board members, and they are unable to
explain the returns of their respective precincts.