WPC1  b?;ҧU>Ow<@jLC!XyipA+ ?ɪ:Nj29"H`1Jv퉧.YLh*wߢ}s炅7[NpcӴ(M#Wdbj%nV{J@OUsTܲJ;vp8drQ6deW9Ay3hцz0%]W/&3fG} j^5Y0$!o aPSt J͂gWsÝNmT'^Dl kւFx ^bpK2.}2 mÙܽ:< q 77zGgC)`AkJ}6,o{c=z`ڰY׌* QZOȬ]RJu1BM4ٕͲ53]<~Z ^Kp{jf% U B % 0Euwn 04 B   UB w 4 <6X9`(*Courier 12pt10cpiX z a)??  JOJXXJOJJJO2  ?/?? ' 3"dE2"? 3 Preparedby DanBivins ,EMC /      7 EMC GD039 A  Emissions,Monitoring,andAnalysisDivision,OAQPS,EPA ?   "   February18,1997? ' m"dE"?? ' m"dE"?(2a$  !??33  JOJXXJOJJJO2  3|u<6X9`(*Courier 12pt10cpiXx6X@`7X@( $??33  JOJXXJOJJJO2 d  a)??   JOJXX JOJJJO2  ?/???/?/?? ' 3"dE2"? 3 Preparedby DanBivins ,EMC /      7 EMTICGD039 A  Emissions,Monitoring,andAnalysisDivision,OAQPS,EPA ?   "   February18,1997? ' m"dE"?? ' m"dE"?<6X9`(*Courier 12pt10cpi{$  !??33  JOJXXJOJJJO2  3?/?     ? ' $#dE,2$}#? 3  @ EMISSIONMEASUREMENTTECHNICALINFORMATIONCENTER T!   GUIDELINEDOCUMENT  !   ? ' $$#dE,$}#?  @)  ALTERNATIVEFORANALYZINGCALIBRATIONGASCYLINDERS Y  INTRODUCTION f3    Amanufacturersorvendorscalibrationgascylinderthatisusedforcalibrationsofcontinuousemissionmonitoringsystems(CEMS)maybesuspectedofbeingoutsidetheguaranteedlimitsofthetagvalue.Therearetwooptionstocorrectingthissituationthatmaybechosen.Thefirstistoaskthevendortoreplacethecylinderwithonewithacorrectvalue.ThesecondistoanalyzethecylinderwithanEPAinstrumentalmethodoraCEMScalibratedwithaprotocolgastodetermineanalternativeorappropriateconcentrationvalueforthecylinder.Thissecondoptionisthetopicofthisalternative.TheEMTICrecommendsthatthisalternativeisapplicablefordeterminingthevaluesofgasesgreaterthan100ppmtagvalueusedfordailycalibrationsofCEMSwhereprotocolgasesarenotrequiredbyrule,permit,performancespecification,orqualityassuranceprocedures. Alternative   0  Y 1.  Thegasanalyzeristhesameasspecifiedfortheapplicablereference Z method(e.g.,3A,6C,7E,etc.)usedfortheperformancespecificationtestingoftheCEMSortheapplicableCEMSthathasbeencalibratedasdefinedintheapplicablerequirementsusingaprotocolgas. $$  ,  Y 2.ThegasanalyzerorCEMSandassociatedsampletransportormanifold  systemmusthavepassedallapplicablemeasurementsystemperformance  testproceduresasdefinedbytheapplicablereferencemethodor )#  !   performancespecification.3.  Thecriteriaandprocedureforacceptanceofthealternativevalueare $   asfollows:Analyzethegasthreetimes.Eachoftheindividualresults  shallbewithin5percentofthetriplicatesetaverage;otherwise,  discardtheentireset,andrepeatthetriplicateanalyses.Ifthe  averageofthetriplicateanalysesiswithin5percentofthe )#   ( calibrationgasmanufacturerscylindertagvalue,usethetagvalue; )#  !m) otherwise,conductatleastthreeadditionalanalysesuntiltheresults  ofsixconsecutiverunsagreewithin5percentoftheiraverage.Then  usethisaverageforthealternativecylindervalueifthesixrun     a averageiswithin15percentofthemanufacturescylindertagvalue.  Ifthemeassuredvalueofagascylinderis Q%!. 15percentdifferentfrom i themanufacturerstagvalue,the &!/ cylindershouldnotbeusedfordaily  calibrations. &"0