Cal. Health and Safety Code § 44037

(a) The department shall compile and maintain records, using the sampling methodology necessary to ensure their scientific validity and reliability, of tests and repairs performed by qualified smog check technicians at licensed smog check stations pursuant to this chapter on all of the following information: (1) The motor vehicle identification information and the test data collected at the station. (2) The number of maintenance and repair operations performed on motor vehicles that fail to pass a test conducted pursuant to this chapter. (3) The correlation between maintenance and repairs recommended by the department pursuant to Section 44016 and maintenance and repairs performed. (4) The charges assessed for the service and repairs and the correlation between the amount charged for repairs and the amount of emission reduction. (5) Data received and compiled through the use of the centralized computer database and computer network to be established pursuant to Section 44037.1, and any other information determined to be essential by the department for program enhancement to achieve greater efficiency, consumer protection, cost-effectiveness, convenience, or emission reductions. (6) The frequency of specific smog check stations issuing a passing certificate for vehicles that have failed a previous inspection at other smog check stations within the preceding 30 days. (b) A written summary of the information specified in subdivision (a) shall be available annually for the technicians and smog check stations in each district and to the public upon request.