WPC9  ۫$F.".;vYqԇcbVڴoL OHuN{`V&4x9\,b:bŸc|R<4'&Bj nk~0'3 ?Y:z7 xՃ8S,Gџk*/ŝ8)W`۽ t_%sM<9Vg7WBkc0)u9' V̬(z$ZHK V~ HyWv_ߨsWta`N^5ڔiNjᝬ,1^pV?QsN^yNT␜pCbgH V]?pjU[g)|KH>nPy\ I_/؜lX|c h3o\})lϭf\h7?aV 7n@(I~nfU: % UFEXZ4r 0On 04 Bw"4%<6X9`("Courier 10cpiX<09Z .Courier New Regular  * )     X   6 ' xd6XXX[<09Z .Courier New Regular[Preparedby PeterR.Westlin ,EMB..D..D.... EMTICGD021 TechnicalSupportDivision,OAQPS,EPAD..D....November30,19926 ' xd6('2$  T!   3|x<6X9`("Courier 10cpiXx6X@;X@( T$   dE[{$*7d  T!   X)XXX,X? ' $xdE$!?   @jjEMISIOSIONMEASURMENTCENTEREMISSIONMEASUREMENTTECHNICALINFORMATIONCENTER #   GUIDELINEDOCUMENT  GD021     ? ' $xdE$!?  @::$ 40CFRPART60  @!APPENDIXA,METHOD1@B B DEFINITIONOFTRAVERSEPOINTNUMBERANDLOCATION  J   INTRODUCTION   N    Section2.5ofMethod1,40CFRPart60,AppendixA,describesanalternativeprocedurefordeterminingtheacceptabilityofasamplinglocationnotmeetingtheminimumrequirementsinSection2ofthemethod.Thesectiondescribesanalternativesiteevaluationprocedureusingadirectionalpitot.Section2.5.2includessomediscussionofthehandlingoftheresultsofsuchchecks,butthelanguageisunclearastothenumberandlocationofsamplingorvelocitytraversepointsifthealternativesiteselectionprocedureresultsindicateanalternativesamplinglocationtobeacceptable.ThefollowingisintendedtoclarifythedirectionsinMethod1ondeterminingthenumberandlocationofsampletraversepointsinanacceptablemeasurementlocation. GUIDELINE  J IfthemeasurementlocationisdeterminedtobeacceptableaccordingtotheproceduresinSection2.5ofMethod1(i.e.,theresultantangleis<20o " andthestandarddeviationis<10o),usethemaximumnumberoftraverse  pointsandlocationsasspecifiedonFigures11(forparticulatesampling)and12(fornonparticulatemeasurements)andTables11and12,asapplicable.X)XXX)