| Use: | Thin-walled core samplers are most commonly used for collection of undisturbed core samples in cohesive soils, silt, and sand above the water table. |
Description:
Sample collection procedures are similar to split-spoon sampling except that the tube is pushed into the soil, using the weight of the drill rig, rather than driven. The following are common thin-wall open tube samplers:
| Shelby Tube: | Undisturbed samples in cohesive soils, silt, and sand above the water table. |
| Continuous Tube: | Same as Shelby tubes, except that the longer barrel is designed to operate inside the column of a hollow-stem auger (see Section 3.1.1). |
Analytes:
| 1. Non-Halogenated VOCs | 5. PAHs | 9. Inorganics |
| 2. Non-Halogenated SVOCs | 6. Pesticides/Herbicides | 10. Explosives |
| 3. Halogenated VOCs | 7. Metals | 11. TPHs |
| 4. Halogenated SVOCs | 8. Radionuclides |
Media:
| Soil: | Ground Water: | Surface Water: | Gas/Air: |
| MINIMUM | Not Applicable | Not Applicable | Not Applicable |
| Maximum Depth: | Up to 25 feet. Can be used up to 25 feet beyond an existing access hole to achieve greater depth below the soil surface. |
| Production Rate: | Sample is available quickly. |
| Investigation Derived Waste Volume: | Small volume of waste. |
| Technology Status: | Commercially available and routinely used field technology. |
| Certification/Verification: | Technology has not participated in CalEPA certification and/or CSCT verification program. |
| Relative Cost per Sample: | Mid-range expense. |
Limitations:
ASTM Standards:
| D 1587 - 94 | Method for Thin-Walled Tube Geotechnical Sampling of Soils. |
| D 4700 - 91 | Soil Sampling from the Vadose Zone. |
| D 6169 | Guide for Selection of Soil and Rock Sampling Devices with Drill Rigs for Environmental Investigations. |
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