ASTM-D5472 › Standard Test Method for Determining Specific Capacity and Estimating Transmissivity at the Control Well
The following bibliographic material is provided to assist you with your purchasing decision:
Scope
1.1 This test describes a procedure for conducting a specific capacity test, computing the specific capacity of a control well, and estimating the transmissivity in the vicinity of the control well. Specific capacity is the well yield per unit drawdown at an identified time after pumping started.
1.2 This test method is used in conjunction with Test Method D4050 for conducting withdrawal and injection well tests.
1.3 The method of determining transmissivity from specific capacity is a variation of the nonequilibrium method of Theis (1) for determining transmissivity and storage coefficient of an aquifer. The Theis nonequilibrium method is given in Test Method D4106.
1.4 Limitations -The limitations of the technique for determining transmissivity are primarily related to the correspondence between the field situation and the simplifying assumptions of the Theis method.
1.5 The values stated in SI units are to be regarded as standard.
1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not address safety problems 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; Control wells; Ground water; Hydraulic conductivity; Observation wells; Specific capacity; Storage coefficient; Transmissivity; Unconfined aquifers; specific capacity/estimating transmissivity at control well, test; ICS Number Code 13.060.10 (Water of natural resources)
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-D5472_D5472M-20
Revision Level
2020 EDITION
Status
Current
Modification Type
Editorially changed
Publication Date
June 17, 2020
Document Type
Test Method
Page Count
6 pages
Committee Number
D18.21