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Title 23--Highways
CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
PART 637--CONSTRUCTION INSPECTION AND APPROVAL
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 | 637.201 | Purpose. |
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| 637.203 | Definitions. |
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| 637.205 | Policy. |
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| 637.207 | Quality assurance program. |
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637.209 | Laboratory and sampling and testing personnel qualifications. |
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Appendix | Appendix A to Subpart B of Part 637--Guide Letter of Certification by State Engineer. |
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