Designation:F2205−19StandardGuideforEcologicalConsiderationsfortheUseofChemicalDispersantsinOilSpillResponse:TropicalEnvironments1ThisstandardisissuedunderthefixeddesignationF2205;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoversrecommendationsforuseofchemicaldispersantstoassistinthecontrolofoilspillsandiswrittenwiththegoalofminimizingtheenvironmentalimpactsofoilspills.Aestheticandsocioeconomicfactorsarenotconsidered;although,theseandotherfactorsareoftenimportantinspillresponse.1.2Eachon-scenecommanderhasavailableseveralmeansofcontrolorcleanupofspilledoil.Inthisguide,useofchemicaldispersantsshouldnotbeconsideredasalastresortafterothermethodshavefailed.Chemicaldispersantsshouldbegivenequalconsiderationwithotherspillcountermeasures.1.3Thisguidepresentsgeneralguidelinesonly.Theoilisassumedtobedispersibleandthedispersanttobeeffective,available,appliedcorrectly,andincompliancewithrelevantgovernmentregulations.Oil,asusedinthisguide,includescrudeoilsandfueloils.Differencesbetweenindividualdisper-santsandtoacertaindegree,differencesbetweendifferentoilsarenotconsidered.1.4Thisguideisoneofseveralrelatedtodispersantconsiderationsindifferentenvironments.TheotherstandardsarelistedinSection2.1.5Thisguideappliestomarineandestuarineenvironmentsbutnottofreshwaterenvironments.1.6Inmakingdispersantusedecisions,appropriategovern-mentauthoritiesshouldbeconsultedasrequiredbylaw.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheD...