California Code, Civil Code - CIV § 1785.30

Upon notification of the results of a consumer credit reporting agency's reinvestigation pursuant to Section 1785.16, a consumer may make a written demand on any person furnishing information to the consumer credit reporting agency to correct any information that the consumer believes to be inaccurate.  The person upon whom the written demand is made shall acknowledge the demand within 30 days.  The consumer may require the consumer credit reporting agency to indicate on any subsequent reports issued during the dispute that the item or items of information are in dispute.  If upon investigation the information is found to be inaccurate or incorrect, the consumer may require the consumer credit reporting agency to delete or correct the item or items of information within a reasonable time.  If within 90 days the consumer credit reporting agency does not receive any information from the person requested to furnish the same or any communication relative to this information from this person, the consumer credit reporting agency shall delete the information from the report.