ESN Northwest

Dual Tube Sampling System

Dual Tube Sampling System ImageESN can sample Caving Holes or below the Water Table, vertically profiling soil and groundwater in a single hole. This is done with the Dual Tube Sampling system, incorporating an exterior 2.125" O.D. drive casing coupled with a 1.0" O.D. rod used to retrieve a core liner. It can be equipped with a threaded or knock-off cutting shoe; the latter allows installation of a monitoring well following sampling, or grouting of the hole after sampling can be done. The benefit of this system is it prevents cross-contamination from uphole sources.









1210 Eastside Street SE Suite 200 Olympia, Washington 98501 | Phone: (360) 459-4670 | Email: info@esnnw.com
Copyright © 2009 ESN Northwest, Inc. All Rights Reserved