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1.1 This guide covers planning and preparing for a groundwater sampling event. It includes technical and administrative considerations and procedures. Example checklists are also provided as Appendices.

1.2 This guide may not cover every consideration procedure, or both, that is necessary before all groundwater sampling projects. In karst or fractured rock terranes, it may be appropriate to collect groundwater samples from springs (see Guide D5717). This guide focuses on sampling of groundwater from monitoring wells; however, most of the guidance herein can apply to the sampling of springs as well.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.4 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

3.1 The success of a sampling event is influenced by adequate planning and preparation. Use of this guide will help the groundwater sampler to methodically execute the planning and preparation.

3.2 This guide should be used by a professional or technician that has training or experience in groundwater sampling.