1、Designation:D5254/D5254M92(Reapproved 2010)1Standard Practice forMinimum Set of Data Elements to Identify a GroundwaterSite1This standard is issued under the fixed designation D5254/D5254M;the number immediately following the designation indicates theyear of original adoption or,in the case of revis
2、ion,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEThe units statement in 1.3 and the designation were revised editorially in August 2010.1.Scope1.1 This practice c
3、overs what information should be ob-tained for any individual groundwater site,also known asmonitoring location or sampling station.As used in thispractice,a site is meant to be a single point,not a geographicarea or property.A groundwater site is defined as any source,location,or sampling station c
4、apable of producing water orhydrologic data from a natural stratum from below the surfaceof the earth.A source or facility can include a well,spring orseep,and drain or tunnel(nearly horizontal in orientation).Other sources,such as excavations,driven devices,bore holes,ponds,lakes,and sinkholes,that
5、 can be shown to be hydrau-lically connected to the groundwater,are appropriate for theuse intended(see 6.4.2.3).NOTE1There are many additional data elements that may benecessary to identify a site,but are not included in the minimum set ofdata elements.An agency or company may require additional da
6、taelements as a part of their minimum set.1.2 This practice includes those data elements that willdistinguish a site as to its geographical location on the surfaceof the earth,political regimes,source identifiers,and individualsite characteristics.These elements apply to all groundwatersites.Each ca
7、tegory of site,such as a well or spring,mayindividually require additional data elements to be complete.Many of the suggested components and representative codesfor coded data elements are those established by the WaterResources Division of the U.S.Geological Survey and used inthe National Water Inf
8、ormation Systems computerized database(1).2NOTE2The data elements presented in this practice do not uniquelyimply a computer data base,but rather the minimum set of groundwaterdata elements that should be collected for entry into any type of permanentfile.1.3 The values stated in either SI units or
9、inch-pound unitspresented in brackets are to be regarded separately asstandard.The values stated in each system may not be exactequivalents;therefore,each system shall be used independentlyof the other.Combining values from the two systems mayresult in non-conformance with the standard.1.3.1 The gra
10、vitational system of inch-pound units is usedwhen dealing with inch-pound units.In this system,the pound(lbf)represents a unit of force(weight),while the unit for massis slugs.The rationalized slug unit is not given,unless dynamic(F=ma)calculations are involved.1.4 This standard does not purport to
11、address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.5 This practice offers a set of instructions for perfo
12、rmingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professional judgment.Not all aspects of this practice maybe applicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care b
13、y whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“Standard”in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.2.Referenced D
14、ocuments2.1 ASTM Standards:3D653 Terminology Relating to Soil,Rock,and ContainedFluids3.Terminology3.1 Definitions:1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Curre
15、nt edition approved Aug.1,2010.Published September 2010.Originallyapproved in 1992.Last previous edition approved in 2004 as D525492(2004).DOI:10.1520/D5254_D5254M-92R10E01.2The boldface numbers given in parentheses refer to a list of references at theend of the text.3For referenced ASTM standards,v
16、isit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.1 For definitions of terms applicable to this practicerefer to Terminology D653.4.Summary of Practice4.1 This practice includes the following data elements toidentify a groundwater sit
