ASTM D4050-20
(Test Method)Standard Test Method for (Field Procedure) for Withdrawal and Injection Well Testing for Determining Hydraulic Properties of Aquifer Systems
Standard Test Method for (Field Procedure) for Withdrawal and Injection Well Testing for Determining Hydraulic Properties of Aquifer Systems
SIGNIFICANCE AND USE
5.1 Withdrawal or injection well test field procedures are used with appropriate analytical procedures in appropriate hydrogeological sites to determine transmissivity and storage coefficient of aquifers and hydraulic conductivity of confining beds.
5.2 Practice D3740 provides evaluation factors for the activities in this test method.
Note 2: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.
5.3 This test method may be limited due to the correspondence between the field situation determined by this test method and the simplifying assumptions of the analytical Test Methods D4105/D4105M or D4106 and D4043.
SCOPE
1.1 This test method covers the field procedure for selecting well locations, controlling change (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 Methods D4105/D4105M or D4106 to evaluate the data and determine aquifer properties.
1.3 The appropriate field and analytical procedures are selected as described in Guide D4043.
1.4 Limitations—The limitations of this test method are primarily related to the correspondence between the field situation determined by this test method and the simplifying assumptions of the analytical Test Methods D4105/D4105M or D4106 and D4043.
1.5 Units—The values stated in SI units are to be regarded as standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard.
1.6 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.6.1 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.
1.7 This test method offers a set of instructions for performing one or more operations. This document cannot replace education or experience and should be used in conjunction with professional judgement. Not all aspects of this standard may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a projects many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.
1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.9 This international standard was developed in accordance with internationally recognized principles on standardization e...
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4050 − 20
Standard Test Method for
(Field Procedure) for Withdrawal and Injection Well Testing
1
for Determining Hydraulic Properties of Aquifer Systems
This standard is issued under the fixed designation D4050; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.7 This test method offers a set of instructions for perform-
ing one or more operations. This document cannot replace
1.1 This test method covers the field procedure for selecting
educationorexperienceandshouldbeusedinconjunctionwith
well locations, controlling change (discharge or injection)
professionaljudgement.Notallaspectsofthisstandardmaybe
rates, and measuring water levels used to analyze the hydraulic
applicable in all circumstances. This ASTM standard is not
properties of an aquifer or aquifers and adjacent confining
intended to represent or replace the standard of care by which
beds.
the adequacy of a given professional service must be judged,
1.2 This test method is used in conjunction with an analyti-
nor should this document be applied without consideration of
cal procedure such as Test Methods D4105/D4105M or D4106
a projects many unique aspects. The word “Standard” in the
to evaluate the data and determine aquifer properties.
title of this document means only that the document has been
approved through the ASTM consensus process.
1.3 The appropriate field and analytical procedures are
selected as described in Guide D4043. 1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.4 Limitations—The limitations of this test method are
responsibility of the user of this standard to establish appro-
primarily related to the correspondence between the field
priate safety, health, and environmental practices and deter-
situation determined by this test method and the simplifying
mine the applicability of regulatory limitations prior to use.
assumptions of the analyticalTest Methods D4105/D4105M or
1.9 This international standard was developed in accor-
D4106 and D4043.
dance with internationally recognized principles on standard-
1.5 Units—The values stated in SI units are to be regarded
ization established in the Decision on Principles for the
as standard. Reporting of test results in units other than SI shall
Development of International Standards, Guides and Recom-
not be regarded as nonconformance with this standard.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.6 All observed and calculated values shall conform to the
guidelines for significant digits and rounding established in
2. Referenced Documents
Practice D6026.
2
2.1 ASTM Standards:
1.6.1 Theproceduresusedtospecifyhowdataarecollected/
D653 Terminology Relating to Soil, Rock, and Contained
recorded or calculated, in this standard are regarded as the
Fluids
industry standard. In addition, they are representative of the
D2488 Practice for Description and Identification of Soils
significant digits that generally should be retained. The proce-
(Visual-Manual Procedures)
dures used do not consider material variation, purpose for
D3740 Practice for Minimum Requirements for Agencies
obtaining the data, special purpose studies, or any consider-
Engaged in Testing and/or Inspection of Soil and Rock as
ations for the user’s objectives; and it is common practice to
Used in Engineering Design and Construction
increase or reduce significant digits of reported data to be
D4043 Guide for Selection of Aquifer Test Method in
commensuratewiththeseconsiderations.Itisbeyondthescope
Determining Hydraulic Properties by Well Techniques
of this standard to consider significant digits used in analytical
D4044/D4044M Test Method for (Field Procedure) for In-
methods for engineering design.
stantaneous Change in Head (Slug) Tests for Determining
Hydraulic Properties of Aquifers
1
Thistestmethodisunder the jurisdiction ofASTM CommitteeD18onSoiland
Rock and is the direct responsibility of Subcommittee D18.21 on Groundwater and
2
Vadose Zone Investigations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2020. Published January 2020. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1991. Last previous edition approved in 2014 as D4050 – 14. DOI: Standards volume information, refer to the standard’s Document Summary page
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4050 − 14 D4050 − 20
Standard Test Method for
(Field Procedure) for Withdrawal and Injection Well Testing
1
for Determining Hydraulic Properties of Aquifer Systems
This standard is issued under the fixed designation D4050; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the field procedure for selecting well locations, controlling change (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 Methods D4105D4105/D4105M or D4106
to evaluate the data and determine aquifer properties.
1.3 The appropriate field and analytical procedures are selected as described in Guide D4043.
1.4 Limitations—Limitations—TheThe limitations of this test method are primarily related to the correspondence between the
field situation determined by this test method and the simplifying assumptions of the analytical Test Methods D4105D4105/
D4105M or D4106D4106 and D4043D4043. .
1.5 Units—The values stated in SI units are to be regarded as standard. Reporting of test results in units other than SI shall not
be regarded as nonconformance with this standard.
1.6 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice
D6026D6026. .
1.6.1 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.
1.7 This test method offers a set of instructions for performing one or more operations. This document cannot replace education
or experience and should be used in conjunction with professional judgement. Not all aspects of this standard may be applicable
in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of
a given professional service must be judged, nor should this document be applied without consideration of a projects many unique
aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM
consensus process.
1.8 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.9 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D653 Terminology Relating to Soil, Rock, and Contained Fluids
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.21 on Groundwater and Vadose
Zone Investigations.
Current edition approved June 1, 2014Jan. 1, 2020. Published July 2014January 2020. Originally approved in 1991. Last previous edition approved in 20082014 as
D4050 – 96 (2008).D4050 – 14. DOI: 10.1520/D4050-14.10.1520/D4050-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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