California Code, Vehicle Code - VEH § 13382

(a) If the chemical test results for a person who has been arrested for a violation of Section 23152 or 23153 show that the person has 0.08 percent or more, by weight, of alcohol in the person's blood, or if the chemical test results for a person who has been arrested for a violation of Section 23140 show that the person has 0.05 percent or more, by weight, of alcohol in the person's blood, the peace officer, acting on behalf of the department, shall serve a notice of order of suspension or revocation of the person's privilege to operate a motor vehicle personally on the arrested person.

(b) If the peace officer serves the notice of order of suspension or revocation, the peace officer shall take possession of any driver's license issued by this state which is held by the person.  When the officer takes possession of a valid driver's license, the officer shall issue, on behalf of the department, a temporary driver's license.  The temporary driver's license shall be an endorsement on the notice of the order of suspension or revocation and shall be valid for 30 days from the date of arrest.

(c) The peace officer shall immediately forward a copy of the completed notice of order of suspension form, and any driver's license taken into possession under subdivision (b), with the report required by Section 13380, to the department.  For the purposes of this section, “immediately” means on or before the end of the fifth ordinary business day following the arrest.