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ASTM D 7929 : 2020

Current
Current

The latest, up-to-date edition.

Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-01-2020

1.1This standard provides guidance and information on passive sampling techniques for collecting groundwater from monitoring wells. Passive groundwater samplers are able to acquire a sample from the screen interval in a well, without the active transport associated with a pump or purge technique (1).2 Passive groundwater sampling is a type of no-purge groundwater sampling method where the samplers are left in the well for a predetermined period of time prior to collecting the sample.

1.2Methods for sampling monitoring wells include low-flow purging and sampling methods, traditional well-volume purging and sampling methods, post-purge grab sampling methods (for example, using a bailer), passive no-purge sampling methods, and active no-purge sampling methods such as using a bailer to collect a sample without purging the well. This guide focuses on passive no-purge sampling methodologies for collecting groundwater samples. These methodologies include the use of diffusion samplers, accumulation samplers, and passive-grab samplers. This guide provides information on the use, advantages, disadvantages, and limitations of each of these passive sampling technologies.

1.3ASTM Standard D653 provides standard terminology relevant to soil, rock, and fluids contained in them. ASTM Standard D4448 provides a standard guide to sampling groundwater wells, and ASTM Standards D5903 and D6089 provide guides for planning and documenting a sampling event. Groundwater samples may require preservation (Guide D6517), filtration (Guide D6564/D6564M), and measures to pack and ship samples (Guide D6911). Standard D7069 provides guidance on the quality control and quality assurance of sampling events. ASTM Standard D5092/D5092M provides standard practice for the design and installation of groundwater monitoring wells, ASTM Standard D5521/D5521M provides a standard guide for developing groundwater monitoring wells in granular aquifers, and D6452 provides a standard guide for purging methods used in groundwater quality investigations. Consult ASTM Standard D6724/D6724M for a guide on the installation of direct-push groundwater monitoring wells and ASTM Standard D6725/D6725M for a guide on the installation of direct-push groundwater monitoring wells with pre-pack screens.

1.4The values stated in SI Units are to be regarded as the standard. Values in inches (such as with well diameters) are given in parentheses, and are provided for information. Use of units other than SI shall not be regarded as nonconforming with this standard.

1.5This guide provides information on passive groundwater sampling in general and also provides a series of considerations when selecting a passive groundwater sampling method. However, it does not recommend a specific course of action, and not all aspects of this guide may be applicable in all field situations. This document cannot replace education or experience and should be used in conjunction with professional judgment. 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.

1.6This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7This 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.

Committee
D 18
DocumentType
Guide
Pages
15
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 6771 : 2018 Standard Practice for Low-Flow Purging and Sampling for Wells and Devices Used for Ground-Water Quality Investigations
ASTM D 6517 : 2018 Standard Guide for Field Preservation of Ground Water Samples
ASTM D 5092/D5092M : 2016 Standard Practice for Design and Installation of Groundwater Monitoring Wells
ASTM D 6699 : 2016 Standard Practice for Sampling Liquids Using Bailers
ASTM D 6724/D6724M : 2016 Standard Guide for Installation of Direct Push Groundwater Monitoring Wells
ASTM D 6725/D6725M : 2016 Standard Practice for Direct Push Installation of Prepacked Screen Monitoring Wells in Unconsolidated Aquifers

ASTM D 6452 : 2018 Standard Guide for Purging Methods for Wells Used for Ground Water Quality Investigations
ASTM D 653 : 2007 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 4750 : 1987 : R1993 : EDT 1 Standard Test Method for Determining Subsurface Liquid Levels in a Borehole or Monitoring Well (Observation Well)
ASTM D 3740 : 2023 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2019 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 6517 : 2018 : R2023 Standard Guide for Field Preservation of Ground Water Samples
ASTM D 6564/D6564M : 2017 : R2024 Standard Guide for Field Filtration of Groundwater Samples
ASTM D 5903 : 1996 : R2023 Standard Guide for Planning and Preparing for a Groundwater Sampling Event
ASTM D 653 : 2022 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2020 : EDT 1 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 : REV A Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 6452 : 2018 : R2023 Standard Guide for Purging Methods for Wells Used for Ground Water Quality Investigations
ASTM D 653 : 2021 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 6564/D6564M : 2017 Standard Guide for Field Filtration of Groundwater Samples
ASTM D 653 : 2021 : REV B Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 6089 : 2019 : R2023 Standard Guide for Documenting a Groundwater Sampling Event
ASTM D 5903 : 1996 : R2017 : EDT 1 Standard Guide for Planning and Preparing for a Groundwater Sampling Event
ASTM D 5903 : 1996 : EDT 1 Standard Guide for Planning and Preparing for a Groundwater Sampling Event
ASTM D 6089 : 2019 Standard Guide for Documenting a Groundwater Sampling Event

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