Designation:D7852−13StandardPracticeforUseofanElectricallyConductiveGeotextileforLeakLocationSurveys1ThisstandardisissuedunderthefixeddesignationD7852;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisstandardpracticedescribesstandardproceduresforusingaconductivegeotextilewithelectricalmethodstolocateleaksinexposedgeomembranesandgeomembranescoveredwithwaterorearthmaterialscontainingmoisture.1.2Thisstandardpracticeprovidesguidancefortheuseofappropriateconductivegeotextileusedinleaklocationsurveyongeomembrane.Thisguideincludesalltypesofconductivegeotextilewithsufficientconductivityfortheparticularelec-tricalleaklocationmethod.Aconductivegeotextileisappli-cabletoalltypesofgeoelectricsurveyswhenthereisotherwisenotaconductivelayerunderthegeomembrane.1.3Theleakstreamitselfbeingadequatelyconductive.Aconductivegeotextileisapplicabletoalltypesofgeoelectricsurveyswhenthereisotherwisenotaconductivelayerunderthegeomembrane.1.4Thisstandardpracticeisintendedtoensurethatleaklocationsurveyscanalwaysbeperformedwithareasonablelevelofcertainty.Thisstandardpracticeprovidesguidancefortheuseofappropriateconductivegeotextileusedinleaklocationsurveyongeomembranes.1.5Leaklocationsurveyscanbeusedonnon-conductivegeomembranesinstalledinbasins,ponds,tanks,oreandwastepads,landfillcells,landfillcaps,othercontainmentfacilitiesandbuildingapplicationssuchasinparkinggarages,decksandgreenroofs.Theproceduresareapplicableforgeomembranesmadeofnonconductivematerialssuchaspolyethylene,polypropylene,polyvinylchloride,chlorosulfonatedpolyethylene,bituminousmaterial,andotherelectrically-insulatingmaterials.Leaklocationsurveyinvolvingconduc-tiveorpartiallyconductivegeomembranesarenotwithinthescopeofthisdocument.1.6Warning—Theelectricalmethodsusedforgeomem-braneleaklocationcouldusehighvolt...
