Oxygen deficient atmosphere

Oxygen deficient atmosphere means an atmosphere containing less than 19.5 percent oxygen by volume.

Source

29 CFR § 1910.146


Scoping language

Scope and application. This section contains requirements for practices and procedures to protect employees in general industry from the hazards of entry into permit-required confined spaces. This section does not apply to agriculture, to construction, or to shipyard employment (parts 1928, 1926, and 1915 of this chapter, respectively).

Is this correct? or