ASTM D6771-02
Standard Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations

Standard No.

ASTM D6771-02

Release Date

2002

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 2011-01

Replace By

ASTM D6771-18

Latest

ASTM D6771-21

Scope

1.1 This practice covers the method for purging and sampling wells and devices used for ground-water quality investigations and monitoring programs known as low-flow purging and sampling. This method is also known by the terms minimal drawdown purging or low-stress purging. This method could be used for other types of ground-water sampling programs but these uses are not specifically addressed in this practice.

1.2 This practice applies only to wells sampled at the wellhead.

1.3 This practice does not address sampling of wells containing either light or dense non-aqueous-phase liquids (LNAPLs or DNAPLs).

1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice 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 means that the document has been approved through the ASTM consensus process.

1.5 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.

ASTM D6771-02 Referenced Document

• ASTM D4750 Standard Test Method for Determining Subsurface Liquid Levels in a Borehole or Monitoring Well (Observation Well)
• ASTM D5088 Standard Practice for Decontamination of Field Equipment Used at Nonradioactive Waste Sites
• ASTM D5092 Standard Practice for Design and Installation of Ground Water Monitoring Wells in Aquifers
• ASTM D5521 Standard Guide for Development of Ground-Water Monitoring Wells in Granular Aquifers (Withdrawn 2003)
• ASTM D5903 Standard Guide for Planning and Preparing for a Groundwater Sampling Event
• ASTM D6026 Standard Practice for Using Significant Digits in Geotechnical Data
• ASTM D6089 Standard Guide for Documenting a Ground-Water Sampling Event
• ASTM D6452 Standard Guide for Purging Methods for Wells Used for Groundwater Quality Investigations
• ASTM D6517 Standard Guide for Field Preservation of Ground Water Samples
• ASTM D6564 Standard Guide for Field Filtration of Groundwater Samples
• ASTM D6634 Standard Guide for the Selection of Purging and Sampling Devices for Ground-Water Monitoring Wells

ASTM D6771-02 history

• 2021 ASTM D6771-21 Standard Practice for Low-Flow Purging and Sampling Used for Groundwater Monitoring
• 2018 ASTM D6771-18 Standard Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations
• 2002 ASTM D6771-02 Standard Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations