1. Scope

1.1 This test method covers an analytical procedure for determining transmissivity and storage coefficient of a nonleaky confined aquifer under conditions of radial flow to a fully penetrating well of constant flux. This test method is a shortcut procedure used to apply the Theis nonequilibrium method. The Theis method is described in Test Method D 4106.

1.2 This test method is used in conjunction with the field procedure given in Test Method D 4050.

1.3 Limitations The limitations of this test method are primarily related to the correspondence between the field situation and the simplifying assumptions of this test method (see ). Furthermore, application is valid only for values of u less than 0.01 ( u is defined in Eqn. 1, in ).

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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D653 Terminology Relating to Soil, Rock, and Contained Fluids

D4043 Guide for Selection of Aquifer Test Method in Determining Hydraulic Properties by Well Techniques

D4050 Test Method for (Field Procedure) for Withdrawal and Injection Well Tests for Determining Hydraulic Properties of Aquifer Systems

D4106 Test Method for (Analytical Procedure) for Determining Transmissivity and Storage Coefficient of Nonleaky Confined Aquifers by the Theis Nonequilibrium Method

Keywords

aquifer tests; aquifers; confined aquifers; control wells; groundwater; hydraulic properties; observation wells; storage coefficient; transmissivity; unconfined aquifers; Aquifers; Coefficient of storage; Confined aquifers; Control wells; Field testing--ground water/aquifers; Ground water; Hydraulic conductivity/transmissivity; Observation wells; Storativity; Theis methods of analysis; Transmissivity and reflectivity; Unconfined/unconsolidated aquifers;

ICS Code

ICS Number Code 93.160 (Hydraulic construction)

DOI: 10.1520/D4105-96R02

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