Designation:D5782−18StandardGuideforUseofDirectAir-RotaryDrillingforGeoenvironmentalExplorationandtheInstallationofSubsurfaceWater-QualityMonitoringDevices1ThisstandardisissuedunderthefixeddesignationD5782;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisguidecovershowdirect(straight)air-rotarydrill-ingproceduresmaybeusedforgeoenvironmentalexplorationandinstallationofsubsurfacewater-qualitymonitoringde-vices.NOTE1—Thetermdirectwithrespecttotheair-rotarydrillingmethodofthisguideindicatesthatcompressedairisinjectedthroughadrill-rodcolumntoarotatingbit.Theaircoolsthebitandtransportscuttingstothesurfaceintheannulusbetweenthedrill-rodcolumnandtheboreholewall.NOTE2—Thisguidedoesnotincludeconsiderationsforgeotechnicalsitecharacterizationsthatareaddressedinaseparateguide.1.2Directair-rotarydrillingforgeoenvironmentalexplora-tionwillofteninvolvesafetyplanning,administration,anddocumentation.Thisguidedoesnotpurporttospecificallyaddressexplorationandsitesafety.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5AllobservedandcalculatedvaluesaretoconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.Theproceduresusedtospecifyhowdataarecollected/recordedorcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sob...
