34ea531b_HA__1926_Subpart_AA__1926_1200__General_Industry
[Difference] Controlled-Atmosphere Permit-Required Confined Space [Construction] Continuous monitoring required unless the employer demonstrates that periodic monitoring is sufficient. [General Industry] 
Monitoring required as necessary.
New Confined Spaces in Construction Standard from OSHA: 1926 Subpart AA, 1926.1200
General Industry