Cal. Health & Safety Code § 25284.1
(a) The board shall take all of the following actions with regard to the prevention of unauthorized releases from petroleum underground storage tanks:
(1) On or before June 1, 2000, initiate a field-based research program to quantify the probability and environmental significance of releases from underground storage tank systems meeting the 1998 upgrade requirements specified in Section 25284, as that section read on January 1, 2002. The research program shall do all of the following:
(4) On or before January 1, 2001, adopt regulations to do all of the following:
(A)
(B)
(5)
(D) On and after January 1, 2002, no person shall install, repair, maintain, or calibrate monitoring equipment for an underground storage tank unless that person satisfies both of the following requirements: