Section 6702 Of Chapter 9. Miscellaneous Safety Provisions From California Labor Code >> Division 5. >> Part 1. >> Chapter 9.

. All portable and all mobile internal combustion engines that are used inside factories, manufacturing plants, warehouses, buildings and other enclosed structures shall be equipped with a certified exhaust purifier device after the certification of the device by the State Air Resources Board. The Division of Occupational Safety and Health shall be responsible for the enforcement of the provisions of this section.