ASTM D6724/D6724M-16
Standard Guide for Installation of Direct Push Groundwater Monitoring Wells

Standard No.

ASTM D6724/D6724M-16

Release Date

2016

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6724/D6724M-16

Scope

5.1 The direct push ground method is a rapid and economical procedure for installing groundwater monitoring wells to obtain representative groundwater samples and location-specific hydrogeologic measurements. Direct push installations may offer an advantage over conventional rotary drilled monitoring wells (Practice D5092) for groundwater explorations in unconsolidated formations because they reduce disturbance to the formation, and eliminate or minimize drill cuttings. At facilities where contaminated soils are present, this can reduce hazard exposure for operators, local personnel, and the environment, and can reduce investigative derived wastes. Additionally, smaller equipment can be used for installation, providing better access to constricted locations.

5.2 Direct push monitoring wells are typically smaller in diameter than drilled wells, thereby reducing purge water volumes, sampling time, and investigative derived wastes. Practice D5092 monitoring wells are used when larger diameters and/or sample volumes are required, or at depths or in geologic formations to where it is difficult to install direct push wells. Direct push monitoring wells should be viable for monitoring for many years.

5.3 Prior to construction and installation of a direct push well or any other type of groundwater well the reader should consult appropriate local agencies regarding regulatory requirements for well construction. A regulatory variance may be required for installation of direct push monitoring wells.

5.4 To date, published comparison studies between drilled monitoring wells and direct push monitoring wells have shown comparability (1-10)4. However, selection of direct push monitoring wells over conventional rotary drilled wells should be based on several criteria, such as site accessibility and penetrability, stratigraphic structure, depth to groundwater, and aquifer transmissivity.

5.5 Typical penetration depths for installation of groundwater monitoring wells with direct push equipment depend on many variables. Some of the variables are the size and type of the driving system, diameter of the drive rods and monitoring well, and the resistance of the earth materials being penetrated. Some direct push systems are capable of installing groundwater monitoring wells to depths in excess of 100 ft [30 m], and larger direct push equipment can reach depths of several hundred feet. However, installation depths of 10 to 50 ft [5 to 15 m] are most common. Direct push methods cannot be used to install monitoring wells in consolidated bedrock (for example, granite, limestone, gneiss), but are intended for installation in unconsolidated materials such as clays, silts, sands, and some gravels. Additionally, deposits containing significant cobbles and boulders (for example, some glacial deposits), or strongly cemented materials (for example, caliche) are likel......

ASTM D6724/D6724M-16 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 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 D5254 Standard Practice for Minimum Set of Data Elements to Identify a Ground-Water Site
• ASTM D5299 Standard Guide for Decommissioning of Groundwater Wells, Vadose Zone Monitoring Devices, Boreholes, and Other Devices for Environmental Activities
• ASTM D5434 Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock
• ASTM D5474 Standard Guide for Selection of Data Elements for Groundwater Investigations
• ASTM D5521 Standard Guide for Development of Ground-Water Monitoring Wells in Granular Aquifers (Withdrawn 2003)
• ASTM D5730 Standard Guide for Site Characterization for Environmental Purposes With Emphasis on Soil, Rock, the Vadose Zone and Ground Water
• ASTM D5978 Standard Guide for Maintenance and Rehabilitation of Ground-Water Monitoring Wells
• ASTM D6001 Standard Guide for Direct-Push Water Sampling for Geoenvironmental Investigations
• ASTM D6026 Standard Practice for Using Significant Digits in Geotechnical Data
• ASTM D6067 Standard Guide for Using the Electronic Cone Penetrometer for Environmental Site Characterization
• ASTM D6282 Standard Guide for Direct Push Soil Sampling for Environmental Site Characterizations
• ASTM D6286 Standard Guide for Selection of Drilling Methods for Environmental Site Characterization
• ASTM D6452 Standard Guide for Purging Methods for Wells Used for Groundwater Quality Investigations
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids
• ASTM D6564 Standard Guide for Field Filtration of Groundwater Samples*， 2024-04-22 Update
• ASTM D6634 Standard Guide for the Selection of Purging and Sampling Devices for Ground-Water Monitoring Wells*， 2024-04-22 Update
• ASTM D6725 Standard Practice for Direct Push Installation of Prepacked Screen Monitoring Wells in Unconsolidated Aquifers*， 2024-04-22 Update
• ASTM D6771 Standard Practice for Low-Flow Purging and Sampling Used for Groundwater Monitoring*， 2021-11-01 Update
• ASTM D6914 Standard Practice for Sonic Drilling for Site Characterization and the Installation of Subsurface Monitoring Devices*， 2024-04-22 Update
• ASTM D7242 Standard Practice for Field Pneumatic Slug (Instantaneous Change in Head) Tests to Determine Hydraulic Properties of Aquifers with Direct Push Ground Water Samplers*， 2024-04-22 Update
• ASTM D7352 Standard Practice for Volatile Contaminant Logging Using a Membrane Interface Probe (MIP) in Unconsolidated Formations with Direct Push Methods*， 2018-07-15 Update
• ASTM D7929 Standard Guide for Selection of Passive Techniques for Sampling Groundwater Monitoring Wells*， 2020-02-15 Update

ASTM D6724/D6724M-16 history

• 2016 ASTM D6724/D6724M-16 Standard Guide for Installation of Direct Push Groundwater Monitoring Wells
• 2004 ASTM D6724-04(2010) Standard Guide for Installation of Direct Push Groundwater Monitoring Wells
• 2004 ASTM D6724-04 Standard Guide for Installation of Direct Push Ground Water Monitoring Wells
• 2001 ASTM D6724-01 Standard Guide for Installation of Direct Push Ground Water Monitoring Wells