Designation:D5549−19StandardGuideforContentsofGeostatisticalSiteInvestigationReport1ThisstandardisissuedunderthefixeddesignationD5549;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONGeostatisticsisaframeworkfordataanalysisandestimationinmediawhosemeasurableattributesshowerraticspatialvariabilityyetalsopossessadegreeofspatialcontinuityimpartedbythenaturalandanthropogenicprocessoperatingtherein.Thesoil,rock,andcontainedfluidsencounteredinenvironmentalorgeotechnicalsiteinvestigationspresentsuchfeaturesandtheirsampledattributesarethereforeamenabletogeostatisticaltreatment.Thisguideisconcernedwiththereportingofsuchinvestigations.1.Scope1.1Thisguidecoversthecontentsrequiredforacompletereportofageostatisticalsiteinvestigation.Acompletereportisunderstoodheretobeonethatcontainsalltheinformationnecessarytotheunderstandingandevaluationofthegeostatis-ticalsiteinvestigationbyothergeostatisticians.1.2Thisguidedoesnotdiscussthereportingofsupplemen-taryinformationthatmayassistevaluationofthereport.1.3Whilegeostatisticalmethodsareusedinmanyfields,thisguideisprimarilyintendedforthereportingofenviron-mentalandgeotechnicalapplications.1.4ThebasicgeostatisticalmethodsreferredtointhisguidearefullydescribedintextsbyDavid(1),2JournelandHuijbregts(2),Clark(3),andIsaaksandSrivastava(4).Olea(5)givesathoroughcompilationofgeostatisticalterminologyaswellas(6)apracticaldescriptionofthesubjectforengineersandearthscientists.Chiles(7)andGoovaerts(8)providematerialonhowtodealwithspatialuncertaintyandhowtousegeostatisticsfortheevaluationofnaturalresources.1.5Thisguidedoesnotdiscussthereportingofmultivariate,space-time,andotherless-frequentlyusedgeo-statisticalmethods;howeverthisisnotintendedtoreflectanyjudgmentastothevalidityofthesemethods.1.6Geostatisticsisbutoneapproachthatcanbe...