1、Designation:D578714Standard Practice forMonitoring Well Protection1This standard is issued under the fixed designation D5787;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates
2、the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis practice for monitoring well protection is provided to promote durable and reliable protectionof installed monitoring wells against natural and man caused damage.The
3、 practices contained promotethe development and planning of monitoring well protection during the design and installation stage.1.Scope*1.1 This practice identifies design and construction consid-erations to be applied to monitoring wells for protection fromdamage and/or impacts.1.2 The installation
4、 and development of a well is a costlyand detailed activity with the goal of providing representativesamples and data throughout the design life of the well.Damages to the well at the surface frequently result in loss ofthe well or changes in the data.This standard provides foraccess control so that
5、 tampering with the installation should beevident.The design and installation of appropriate surfaceprotection will mitigate the likelihood of damage or loss.1.3 This practice may be applied to other surface or subsur-face monitoring device locations,such as piezometers,permeameters,temperature or m
6、oisture monitors,or seismicdevices to provide protection.1.4 UnitsThe values stated in SI(inch-pound)units are tobe regarded as standard.No other units of measurement areincluded in this standard.1.5 This practice offers a set of instructions for performingone or more specific operations.This docume
7、nt 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 by whichthe adequacy of a given professional serv
8、ice 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.1.6 This standard does not purport to address all of thesafety
9、 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.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock
10、,and ContainedFluidsD5918 Test Methods for Frost Heave and Thaw WeakeningSusceptibility of Soils3.Terminology3.1 Definitions:3.1.1 For definitions of common technical terms in thisstandard,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 barrier,nany device that phy
11、sically prevents accessor damage to an area.3.2.2 barrier markers,nplastic,or metal posts,often inbright colors,placed around a monitoring well to aid inidentifying or locating the well.3.2.3 bollards,nsteel pipe,typically from 10 to 30 cm(4to 12 in.)in diameter and normally filled with concrete or
12、groutthat are placed around a well location to protect the well fromphysical damage,such as from vehicles.3.2.4 sealed cap,na PVC,steel,or alloy pipe end cap,normally gasketed or sealed,that is designed to prevent wateror other substances from entering into,or out of the well riser.4.Significance an
13、d Use4.1 An adequately designed and installed surface protectionsystem will mitigate the consequences of natural damage(that1This 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 Investigati
14、ons.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1995.Last previous edition approved in 2000 as D5787 95(2009).DOI:10.1520/D5787-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Boo
15、k of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 is,freeze/thaw damage)i
16、n susceptible areas,or man causeddamages(that is,from vehicles),which could otherwise occurand result in either changes to the data,or complete loss of themonitoring well.4.2 The extent of application of this practice may dependupon the importance of the monitoring data,cost of monitoringwell replacement,expected or design life of the monitoringwell,the presence or absence of potential risks,and setting orlocation of the well.4.3 Monitoring well surface protection should be a part ofthe well des
