ASTM D4050-96(2002) - 10.10.1996
 
1. Scope

1.1 This test method describes the field procedure for selecting well locations, controlling discharge or injection rates, and measuring water levels used to analyze the hydraulic properties of an aquifer or aquifers and adjacent confining beds.

1.2 This test method is used in conjunction with an analytical procedure such as Test Method D 4105 or D 4106 to determine aquifer properties.

1.3 The appropriate field and analytical procedures are selected as described in Guide D 4043.

1.4 The values stated in SI units are to be regarded as standard.

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.

 
2. Referenced Documents

D4043-17(2026)e1

Standard Guide for Selection of Aquifer Test Method in Determining Hydraulic Properties by Well Techniques (Includes all amendments and changes 7/17/2026).

D4044-96

Standard Test Method for (Field Procedure) for Instantaneous Change in Head (Slug) Tests for Determining Hydraulic Properties of Aquifiers

D4105-15

Standard Test Method for (Analytical Procedure) for Determining Transmissivity and Storage Coefficient of Nonleaky Confined Aquifers by the Modified Theis Nonequilibrium Method

D3740-26

Standard Practice for Minimum Requirements for Agencies Engaged in Testing of Soil and Rock as Used in Engineering Design and Construction

D2488-26

Standard Practice for Description and Identification of Soils for Engineering Purposes (Visual-Manual Procedures)

D653-26a

Standard Terminology Relating to Soil, Rock, and Contained Fluids (Includes all amendments and changes 6/15/2026).

D6026-21

Standard Practice for Using Significant Digits and Data Records in Geotechnical Data

D4106-20

Standard Practice for (Analytical Procedure) for Determining Transmissivity and Storage Coefficient of Nonleaky Confined Aquifers by the Theis Nonequilibrium Method