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National Tunnel Inspection Standards | Midpage
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Code of Federal Regulations
Title 23
Chapter I
Subchapter G
Part 650
Subpart E
National Tunnel Inspection Standards
650.501
Purpose.
650.503
Applicability.
650.505
Definitions.
650.507
Tunnel inspection organization responsibilities.
650.509
Qualifications of personnel.
650.511
Inspection interval.
650.513
Inspection procedures.
650.515
Inventory.
650.517
Incorporation by reference.