Cal. Health & Saf. Code § 12105.1
Except in a case in which the issuing authority determines that the explosives are necessary because of an emergency involving a danger to persons or property, no permit shall normally be issued until one week has elapsed after application is made. If the applicant gives evidence that he has previously been issued an explosives permit pursuant to this part and if the legitimacy of the purpose for which the current application is made is clearly apparent to the issuing authority, the issuing authority may in his discretion issue a permit before one week has elapsed. If no affirmative action is taken on the application within 14 days after the application is made, the issuing authority shall explain the cause for such delay to the applicant.
Ca. Health and Saf. Code § 12105.1