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Article 8. Tunnel Classifications | Midpage
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California Code of Regulations
Title 8
Division 1. Department of Industrial Relations
Chapter 4. Division of Industrial Safety
Subchapter 20. Tunnel Safety Orders
Article 8. Tunnel Classifications
Article 8. Tunnel Classifications
State of California
8422
Tunnel Classifications.
8424
Airborne Contaminants.
8425
Operation of Gassy and Extrahazardous Tunnels.