ASTM D7929-14
Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells

Standard No.

ASTM D7929-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7929-20

Latest

ASTM D7929-20

Scope

4.1 General—In the past ten (plus) years, the Interstate Technology Regulatory Council (ITRC) has provided several technical and regulatory documents on the use of passive groundwater sampling methods (1, 4-6). Collectively, these documents have provided information and references on the technical basis for their use, comparison of sampling results with more traditional sampling methods, descriptions of their proper use, limitations, and a survey of their acceptance and use by responding state regulators.

4.1.1 Because of the large number of passive samplers that have been developed over the past fifteen years for various types of environmental sampling, it is beyond the scope of this standard to discuss separately each of the methods that could or can be used to sample groundwater. Extensive literature reviews on diffusion- and accumulation-passive samplers can be found in the scientific literature (that is, 3, 7-13). These reviews provide information on a wide variety of passive sampling devices for use in air, soil vapor, and water. A review paper on the use of diffusion and accumulation-type passive samplers specifically for sampling volatile organic compounds (VOCs) in groundwater (14) includes information on other passive samplers that are not included in the ITRC documents (1, 6) and discusses their use with respect to measuring mass flux.

4.2 Use—Passive samplers are deployed at a pre-determined depth, or depths, within a well for a pre-determined period of time and should remain submerged for their entire deployment time. All of the passive technologies described in this document rely on the sampling device being exposed to the groundwater during deployment and the continuous flushing of the open or screened interval of the well by ambient groundwater flow (15) to produce water quality conditions in the well bore that effectively mimic those conditions in the aquifer adjacent to the screen or open interval. For samplers that require the establishment of equilibrium, it is important that the equilibration period be long enough to allow the well to recover from any disturbance caused by placing the sampler in the well and to prevent, or reduce, losses of analytes from the water sample by sampler materials due to sorption. For kinetic accumulation samplers (used as kinetic samplers), it is important that the deployment time is long enough that quantitative uptake can occur but not so long that uptake is no longer in the linear portion of the uptake curve (that is, has become curvilinear).

4.2.1 As with all types of groun......

ASTM D7929-14 Referenced Document

• ASTM D3740 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
• ASTM D4448 Standard Guide for Sampling Ground-Water Monitoring Wells
• ASTM D4750 Standard Test Method for Determining Subsurface Liquid Levels in a Borehole or Monitoring Well (Observation Well)
• 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 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 D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids
• ASTM D6564 Standard Guide for Field Filtration of Groundwater Samples
• ASTM D6724 Standard Guide for Installation of Direct Push Groundwater Monitoring Wells
• ASTM D6725 Standard Practice for Direct Push Installation of Prepacked Screen Monitoring Wells in Unconsolidated Aquifers
• ASTM D6911 Standard Guide for Packaging and Shipping Environmental Samples for Laboratory Analysis*， 2024-04-20 Update
• ASTM D7069 Standard Guide for Field Quality Assurance in a Groundwater Sampling Event

ASTM D7929-14 history

• 2020 ASTM D7929-20 Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells
• 2014 ASTM D7929-14 Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells