AASHTO R 21 : 1996(R2015)
Superseded
Superseded
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PRACTICE FOR DRILLING FOR SUBSURFACE INVESTIGATIONS-UNEXPECTEDLY ENCOUNTERING SUSPECTED HAZARDOUS MATERIAL
Published date
05-22-2013
Superseded date
08-16-2015
Superseded by
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| DocumentType |
Standard
|
| PublisherName |
American Association of State Highway and Transportation Officials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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