Section 43820 Of Article 2. Fuel System Evaporative Loss Control Devices From California Health And Safety Code >> Division 26. >> Part 5. >> Chapter 4. >> Article 2.

. The state board shall adopt, by regulation, criteria for the certification of fuel system evaporative loss control devices for installation on motor vehicles not equipped with such a device when first sold. Such criteria shall include, but not be limited to, requirements that the device:
  (a) Shall not allow fuel system evaporative loss greater than six grams of hydrocarbons per test.
  (b) Shall equal or exceed the performance criteria established by the state board for such new devices required on new motor vehicles or, in the alternative, shall have an expected useful life of at least 50,000 miles of operation.