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1.1 This guide covers methods for purging wells used for groundwater quality investigations and monitoring programs. These methods could be used for other types of programs but are not addressed in this guide.
1.3 This standard describes seven methods (A-G) for the selection of purging methods. Method A—Fixed Volume Purging, Method B—Purging Based on Stabilization of Indicator Parameters, Method C—Purging Based on Stabilization of Target Analytes, Method D—Purging Based on Fixed Volume Combined with Indicator Parameter Stabilization, Method E—Low Flow/Low Volume (Minimal Drawdown) Purging, Method F—Well Evacuation Purging, and Method G—Use of Packers in Purging.
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 documente be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this guide means only that the document has been approved through the ASTM consensus process.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D5088 Practice for Decontamination of Field Equipment Used at Waste Sites
D5092/D5092M Practice for Design and Installation of Groundwater Monitoring Wells
D5521/D5521M Guide for Development of Groundwater Monitoring Wells in Granular Aquifers
D6089 Guide for Documenting a Groundwater Sampling Event
D6771 Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations
ICS Number Code 13.060.10 (Water of natural resources)
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ASTM D6452-99(2012)e1, Standard Guide for Purging Methods for Wells Used for Groundwater Quality Investigations, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top