Designation:D6914−04(Reapproved2010)StandardPracticeforSonicDrillingforSiteCharacterizationandtheInstallationofSubsurfaceMonitoringDevices1ThisstandardisissuedunderthefixeddesignationD6914;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversproceduresforusingsonicdrillingmethodsintheconductingofgeoenvironmentalexplorationforsitecharacterizationandintheinstallationofsubsurfacemonitoringdevices.1.2Theuseofthesonicdrillingmethodforgeoenviron-mentalexplorationandmonitoring-deviceinstallationmayofteninvolvepreliminarysiteresearchandsafetyplanning,administration,anddocumentation.Thisguidedoesnotpur-porttospecificallyaddresssiteexplorationplanningandsitesafety.1.3SoilorRocksamplescollectedbysonicmethodsareclassedasgroupAorgroupBinaccordancewithPracticesD4220.OthersamplingmethodsmaybeusedinconjunctionwiththesonicmethodtocollectsamplesclassedasgroupCandGroupD.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.5Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Itisadescriptionofthepresentstate-of-the-artpracticeofsonicdrilling.Itdoesnotrecommendthismethodasaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthispracticemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject’smanyuniqueaspects.Theword“Standard”inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.1.6Thispracticedoesnotpurporttocomprehensivelyaddressallthemethodsandtheissuesassociatedwithdrillingpractices...
