Designation:D5787−20StandardPracticeforMonitoringWellProtectionAtorNearLandSurface1ThisstandardisissuedunderthefixeddesignationD5787;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThispracticeformonitoringwellprotectionisprovidedtopromotedurableandreliableprotectionofinstalledmonitoringwellsagainstnaturalandanthropogenicdamage,whichmaycompromisetheconditionofthewelltoproviderepresentativepotentiometricandwaterqualitydataforwhichitwasconstructed.Thepracticescontainedpromotethedevelopmentandplanningofmonitoringwellprotectionduringthedesignandinstallationstage.1.Scope*1.1Thispracticeidentifiesdesignandconstructionconsid-erationstobeappliedtomonitoringwellsforprotectionfromevents,whichmayimpairtheintendedpurposeofthewellsuchaswaterlevelorwaterqualitymonitoringdata.1.2Theinstallationanddevelopmentofawellisacostlyanddetailedactivitywiththegoalofprovidingrepresentativesamplesanddatathroughoutthedesignlifeofthewell.Damagetothewellatthesurfacefrequentlyresultsinthelossofthewellorcanpotentiallyimpactmeasuredwaterleveland/orgroundwaterqualitydata.Thisstandardprovidesforaccesscontrolsothattamperingwiththeinstallationshouldbeevident.1.3Thispracticemaybeappliedtoothersurfaceorsubsur-facemonitoringdevices,suchaspiezometers,permeameters,temperatureormoisturemonitors,orseismicdevices.1.4Units—ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch/poundunitsgiveninparenthesesareforinformationonly.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnon-conformancewiththestandard.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026,unlesssupersededbythisstandard.1.6Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Thisdocumentcannotreplaceeducationorexperienc...
