ASTM-D5270 › Standard Test Method for Determining Transmissivity and Storage Coefficient of Bounded, Nonleaky, Confined Aquifers
The following bibliographic material is provided to assist you with your purchasing decision:
Scope
1.1 This test method covers an analytical procedure for determining the transmissivity, storage coefficient, and possible location of boundaries for a bounded confined aquifer. This test method is used to analyze water-level or head data from one or more observation wells or piezometers during the pumping of water from a control well at a constant rate. This test method also applies to flowing artesian wells discharging at a constant rate. With appropriate changes in sign, this test method also can be used to analyze the effects of injecting water into a control well at a constant rate.
1.2 The analytical procedure in this test method is used in conjunction with the field procedure in Test Method D4050.
1.3 Limitations -The valid use of this test method is limited to determination of transmissivities and storage coefficients for aquifers in hydrogeologic settings with reasonable correspondence to the assumptions of the Theis nonequilibrium method (see Test Method D4106) (see 5.1), except that the aquifer is limited in areal extent by a linear boundary that fully penetrates the aquifer. The boundary is assumed to be either a constant-head boundary (equivalent to a stream or lake that hydraulically fully penetrates the aquifer) or a no-flow (impermeable) boundary (equivalent to a contact with a significantly less permeable rock unit). The Theis nonequilibrium method is described in Test Methods D 4105 and D 4106.
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; Boundaries; Confined aquifers; Control wells; Drawdown; Field testing-ground water/aquifers; Ground water; Hydraulic conductivity; Image wells; Observation wells; Storativity; Transmissivity; transmissivity-aquifers (bounded/nonleaky/confined), analytical
To find similar documents by ASTM Volume:
04.08 (Soil and Rock (I): D420 - D5876)
To find similar documents by classification:
13.060.10 (Water of natural resources)
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Customers who bought this document also bought:
SAE-J2975Measurement of Copper and Other Elements in Brake Friction Materials
ASTM-D4050
Standard Test Method for (Field Procedure) for Withdrawal and Injection Well Testing for Determining Hydraulic Properties of Aquifer Systems
ASTM-D4043
Standard Guide for Selection of Aquifer Test Method in Determining Hydraulic Properties by Well Techniques
Document Number
ASTM-D5270_D5270M-20
Revision Level
2020 EDITION
Status
Current
Modification Type
Revision
Publication Date
June 29, 2020
Document Type
Test Method
Page Count
8 pages
Committee Number
D18.21