ASTM-D4105 Historical Revision Information
Standard Test Method (Analytical Procedure) for Determining Transmissivity and Storage Coefficient of Nonleaky Confined Aquifers by the Modified Theis Nonequilibrium Method

ASTM-D4105 - 1996 EDITION - SUPERSEDED
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Standard Test Method for (Analytical Procedure) for Determining Transmissivity and Storage Coefficient of Nonleaky Confined Aquifers by the Modified Theis Nonequilibrium Method
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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 5.1). Furthermore, application is valid only for values of less than 0.01 ( is defined in Eq 2, in 8.6).

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.

Keywords

Aquifers; Coefficient of storage; Confined aquifers; Control wells; Field testing-ground water/aquifers; Ground water; Hydraulic conductivity; Observation wells; Storativity; Theis nonequilibrium method; Transmissivity and reflectivity; Unconfined aquifers

To find similar documents by ASTM Volume:

04.08 (Soil and Rock (I): D420 - D5876)

To find similar documents by classification:

93.160 (Hydraulic construction Hydraulic energy equipment, see 27.140)

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Document Number

ASTM-D4105-96

Revision Level

1996 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

Oct. 10, 1996

Document Type

Test Method

Page Count

5 pages

Committee Number

D18.21