1、Designation:D578720Standard Practice forMonitoring Well Protection At or Near Land Surface1This 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 i
2、n parentheses indicates 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 a
3、nd anthropogenic damage,which may compromise thecondition of the well to provide representative potentiometric and water quality data for which it wasconstructed.The practices contained promote the development and planning of monitoring wellprotection during the design and installation stage.1.Scope
4、*1.1 This practice identifies design and construction consid-erations to be applied to monitoring wells for protection fromevents,which may impair the intended purpose of the wellsuch as water level or water quality monitoring data.1.2 The installation and development of a well is a costlyand detail
5、ed activity with the goal of providing representativesamples and data throughout the design life of the well.Damage to the well at the surface frequently results in the lossof the well or can potentially impact measured water leveland/or groundwater quality data.This standard provides foraccess cont
6、rol so that tampering with the installation should beevident.1.3 This practice may be applied to other surface or subsur-face monitoring devices,such as piezometers,permeameters,temperature or moisture monitors,or seismic devices.1.4 UnitsThe values stated in SI units are to be regardedas the standa
7、rd.The inch/pound units given in parentheses arefor information only.Reporting of test results in units otherthan SI shall not be regarded as non-conformance with thestandard.1.5 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPract
8、ice D6026,unless superseded by this standard.1.6 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or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
9、in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by 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 doc
10、ument means only that the document has beenapproved through the ASTM consensus process.1.7 This standard does not purport to 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,health,and environmental
11、 practices and deter-mine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guide
12、s and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD5918 Test Methods for Frost Heave and Thaw WeakeningSusceptibility of SoilsD5092 Practice for De
13、sign and Installation of GroundwaterMonitoring WellsD6026 Practice for Using Significant Digits in GeotechnicalData3.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 andVad
14、ose Zone Investigations.Current edition approved Jan.1,2020.Published January 2020.Originallyapproved in 1995.Last previous edition approved in 2014 as D5787 14.DOI:10.1520/D5787-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.
15、For Annual Book 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 StatesThis intern
16、ational standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.3.1.1 For definitions of common technical terms in thisstandard,refer to Terminology D653.4.Significance and Use4.1 An adequately designed and installed surface protectionsystem will mitigate the c
