1.1 This guide covers procedures that may be used for obtaining soil samples from the vadose zone (unsaturated zone). Samples can be collected for a variety of reasons including the following:1.1.1 Stratigraphic description,1.1.2 Hydrauli
ASTM
Standard Guide for Soil Sampling from the Vadose Zone
STD-55487
1991
2006-07-01
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