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ASTM D 6452 : 1999 : R2005

ASTM D 6452 : 1999 : R2005

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Guide for Purging Methods for Wells Used for Groundwater Quality Investigations

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-01-2005

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 04.09, 2015 Deals with procedures for purging wells for ground-water quality investigations and monitoring programs.

Wells used in groundwater quality investigations or monitoring programs are generally purged prior to sampling (Note 1). Purging is done to minimize the bias associated with stagnant water in the well, which generally does not accurately reflect ambient groundwater chemistry (Note 2).

Note 1—Some sampling methods, such as passive sampling, do not require the practice of purging prior to sample collection (1,2).

Note 2—This guide does not address the practice of post-sample purging (purging again after sampling is completed), which is intended for purposes other than the minimization of bias associated with stagnant water in the well.

There are various methods for purging. Each purging method may have a different volume of influence within the aquifer or screened interval. Therefore, a sample collected after purging by any one method is not necessarily equivalent to samples collected after purging by the other methods. The selection of the appropriate method will be dependent on a number of factors, which should be defined during the development of the sampling and analysis plan. This guide describes the methods available and defines the circumstances under which each method may be appropriate.

Committee
D 18
DocumentType
Guide
Pages
6
ProductNote
Reconfirmed 2005
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 6001 : 2005 : R2012 Standard Guide for Direct-Push Groundwater Sampling for Environmental Site Characterization
ASTM D 6724/D6724M : 2016 Standard Guide for Installation of Direct Push Groundwater Monitoring Wells
ASTM D 7929 : 2014 Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells
ASTM D 4448 : 2001 : R2019 Standard Guide for Sampling Ground-Water Monitoring Wells
ASTM D 6771 : 2018 Standard Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations
ASTM D 7069 : 2004 : R2015 Standard Guide for Field Quality Assurance in a Groundwater Sampling Event
ASTM D 6634/D6634M : 2014 Standard Guide for the Selection of Purging and Sampling Devices for Groundwater Monitoring Wells (Withdrawn 2023)

ASTM D 5521 : 2005 Standard Guide for Development of Groundwater Monitoring Wells in Granular Aquifers
ASTM D 6089 : 2015 : REDLINE Standard Guide for Documenting a Groundwater Sampling Event
ASTM D 5730 : 2004 Standard Guide for Site Characterization for Environmental Purposes With Emphasis on Soil, Rock, the Vadose Zone and Groundwater (Withdrawn 2013)
ASTM D 653 : 2014 : REDLINE Standard Terminology Relating to Soil, Rock, and Contained Fluids

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Hardcopy - English
PDF - English
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