Cal. Code Regs. tit. 8 § 5459
Undercoating spray operations shall conform to all requirements of this Article pertaining to spray finishing operations.
EXCEPTION: Automobile undercoating operations in garages, conducted in areas having adequate natural or mechanical ventilation, are exempt from the requirements pertaining to spray coating operations, when undercoating materials not more hazardous than kerosene (as classified by Underwriters Laboratories in respect to fire hazard rating 30-40) are used, or undercoating materials using only solvents having a flash point in excess of 100° F(37.8° C) are used, and no open flames or other sources of ignition are within 20 feet while such operations are conducted.
Cal. Code Regs. Tit. 8, § 5459
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.