WPC} Plمfd$Emb@krbdd$xFutL9^m' Owqo/">VQ/45!*3[1d"_O.W/ <alpA6 u_Zj(RJwjۆSiʎj[+ɇVl`ln :`{J9Bc~$]GOv {=\_ C n-\aA 9X#.qq%F]` tlO( ϣG!g)6'JP)R[_\:>x#m${LQM>Yf#M'龻U@ 7osmW{~6pel_eh˃e&7B+]50Hfm֗ X|3tO+$g`V@=.qq)pT$Idx4JՋXZhܼ\858SNcz yU-:6 %p 0v 0G 0 0 0U 0B 0 0 0 0U 0  0 0 0L 0 0[ 0 0 0 0 0 0 0 0) 0< 0N ! 0a[" 0# 0$ 0E% 0% 0& 0' 0O( 03) 0) 0* 0V+ 0, 0,UB. 0.U0 00 0I2 03 04 0Pz5 0P5 0P6 0Tj6 0T6 0T7 0Tf7 0T7 0T8 0Pb8 0P8 09 0h9 0V9 0G:^; 0Os<E<< 0 O=%= 0O?^? 0OE@ 0z@ 0A A 0=A 0FB 0P[B 1B 0>C 1C 0DE 0>I 0I JKLM 0 NOPQR 0STUVW 0!XYZ[\ 0]^_f`a 0QZbUc4cd8e+g%h D+h 0Oi 0Iei AMi i 0Ow C xf$xa&x BQ*:xUdx B|xxxxx 0Egy AYy3z8zd#z3{|d#|"}}dz~.~)dT{πd|g3dfxaz1}dM<.}d44"VdL,:fd3dL+.dǏ3d?|dQ 1 1 1b 1 1ڗn 04#!˜N^ w@4:N mPPPPPfgai<6X9`("Courier 10cpiX76LEVEL 5[3]Using 1-5 levels for paragraph numbering    21.3  Ԁ  Ԁl> 6EPA.STY[5]EPA Style with TOC marking..  2(1)3  Ԁl;!6EPA.STY[6]EPA Style with TOC marking..  2(a)3  Ԁ.l76EPA.STY[3]EPA Style with TOC marking    21.3  Ԁ  lp6EPA.STY[1]EPA Style with TOC marking  @..SECTION  2I.3  Ԉ@..   ԈlE6EPA.STY[2]EPA Style with TOC marking    2A.3  0..  l4#,6EPA.STY[4]EPA Style with TOC marking    2a.3  Ԁ  ..6  :MRIREPORT[1]MRI Report with Level 1 flushed left    2I.3  .0  4  6LEVEL 5[2]Using 1-5 levels for paragraph numbering    2A.3  Ԁ  =6LEVEL 5[4]Using 1-5 levels for paragraph numbering..  2a.3  Ԁ.?{6LEVEL 5[5]Using 1-5 levels for paragraph numbering..  2(1)3  ..7Ȯ:MRIREPORT[3]MRI Report with Level 1 flushed left    21.3  Ԁ  V& 8Document[8]Document Style0..8` ..` ft   Vy8Document[4]Document Style.. . ft V 9{8Document[6]Document Style8... ftV 9w8Document[5]Document Style0... ftV:8Document[2]Document Style   2A.3  Ԁ   V& 8Document[7]Document Style0..0` ..` Ԁ  z` :Right Par[1]Right-Aligned Paragraph Numbers..  2I.3  Ԁ..0..zs B:Right Par[2]Right-Aligned Paragraph Numbers..` ..  2A.3  Ԁ..0` ..` VJ8Document[3]Document Style..   21.3  Ԁ   z :Right Par[3]Right-Aligned Paragraph Numbers..` ..`  ..P   21.3  Ԁ` ..` 0 .. z &:Right Par[4]Right-Aligned Paragraph Numbers..` ..`  .. ..   2a.3  Ԁ .. 0..z {j:Right Par[5]Right-Aligned Paragraph Numbers..` ..`  .. ..h..  2(1)3  Ԁ..0h..hz Ĵ:Right Par[6]Right-Aligned Paragraph Numbers..` ..`  .. ..h..h..  2(a)3  Ԁh..h0..z :Right Par[7]Right-Aligned Paragraph Numbers..` ..`  .. ..h..h....  2i)3  Ԁ..0..z :Right Par[8]Right-Aligned Paragraph Numbers..` ..`  .. ..h..h....p..  2a)3  Ԁ..0p..pVc08Document[1]Document Style  @..^    2I.3  Ԁ     Ԉ l= g:Technical[5]Technical Document Style..   2(1)3  Ԁ. l= :Technical[6]Technical Document Style..   2(a)3  Ԁ. l:%:Technical[2]Technical Document Style   2A.3  Ԁ   .. l7!:Technical[3]Technical Document Style   21.3  Ԁ   .. l6! ):Technical[4]Technical Document Style   2a.3  Ԁ   .. lE0 D:Technical[1]Technical Document Style    2I.3  Ԁ     .. l<a~:Technical[7]Technical Document Style..   2i)3  Ԁ. l<a:Technical[8]Technical Document Style..   2a)3  Ԁ. ?X:MRIREPORT[5]MRI Report with Level 1 flushed left..  2(1)3  ..4  :MRIREPORT[2]MRI Report with Level 1 flushed left    2A.3  Ԁ  JY:MRIREPORT[4]MRI Report with Level 1 flushed left..    2a.3  Ԁ  .npu:complevel[4]Compendium auto numbering..` ..` &&&W+) `*Times New RomanTTW   2a.3  &&&W+) `*Times New RomanTTW) `*Times New RomanTTnV:complevel[1]Compendium auto numbering&  --*`-    2I.3  .  &&&W+) `*Times New RomanTTW'  *`n}:complevel[2]Compendium auto numbering&&&W+) `*Times New RomanTTW    2A.3  &&&W+) `*Times New RomanTTW  n p" :complevel[3]Compendium auto numbering&&&W+) `*Times New RomanTTW..    21.3   &&&W+) `*Times New RomanTTW<R:complevel[5]..` ..`    2(1)3  Vo6LEVEL 5[1]Using 1-5 levels for paragraph numbering  @..    2I.3  .0  86LEVEL 5[6]23  86LEVEL 5[7]23  86LEVEL 5[8]23  <:complevel[6]23  <:complevel[7]23  <:complevel[8]23  <:MRIREPORT[6]23  <:MRIREPORT[7]23  <:MRIREPORT[8]23  86EPA.STY[7]23  86EPA.STY[8]23  X!8second posisecond position8.. T0header1bold,1st position :8one line pat Y0CPartIACompendium, Part IA:, Method IO-1  ADFH'XX'  B'   XXXXXX-X6XXX MethodIO1HH<(#PartI:HiVol   ?C' mxdEox?('2$ T!    E(   XXX PartI:HiVol@(#MethodIO1   ?C' LxdEcx?('2$ T!     G)   XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1  ('2$ T!    I*   XXX?C' xdEx?   Page  1  >(#Revised11/92 ('2$ T!   R& 8BibliogrphyBibliography0....fE2Doc InitInitialize Document StyleL( P  (MNO($0 ($0 0 (($0 0 0  A_ekqwDocumentDocument StyleI.1.A.a.(1)(a)i)a)jD4Tech InitInitialize Technical Style( R$!"# %& ($!"# %& CuyTechnicalTechnical Document Style11.11.1.11.1.1.11.1.1.1.11.1.1.1.1.11.1.1.1.1.1.11.1.1.1.1.1.1.1x?u2PleadingHeader for numbered pleading paper T  E(  XXXXX?C'*dE*??C'*dE*?HH1HH2HH3HH4HH5HH6HH7HH8HH910111213141516171819202122232425262728  .+LW0REPORTSBID, ACT, CTG ,   #d#V0CPartIBCompendium Part 1B  WXYZ 'XX'  B'  XXXXXX-X6XXX MethodIO1PP<(#PartI:Dichot   ?C' mxdEox? E(  XXX PartI:Dichot@(#MethodIO1   ?C' \xdEcx?  G)  XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1   I*  XXX?C' xdEx?   Page  1  >(#Revised11/92 j0CPart2ACompendium Part 2: Method A  \]^_'XX'  B'  XXXXXX-X6XXX MethodIO1'(#Part2:XRayFluorescenceAnalysis   ?C' mxdEox? E(  XXX Part2:XRayFluorescenceAnalysis @(# MethodIO1   ?C' LxdEcx?  G)  XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1   I*  XXX?C' xdEx?   Page  1  >(#Revised11/92 X4stdmethodPart 1-Std Method  abcd'XX'  B'  XXXXXX-X6XXX MethodIO2||3(#Part1:StandardMethod   ?C' mxdEox? E(  XXX Part1:StandardMethod @(# MethodIO2   ?C' LxdEcx?  G)  XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1   I*  XXX?C' xdEx?   Page  1  >(#Revised11/92 ~@6CstdmethodCompendium--Part 1, Standard Method  fghi'XX'  B'  XXXXXX-X6XXX MethodIO2||3(#Part1:StandardMethod   ?C' mxdEox? E(  XXX Part1:StandardMethod @(# MethodIO2   ?C' LxdEcx?  G)  XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1   I*  XXX?C' xdEx?   Page  1  >(#Revised11/92 b2CPt2ICAPCompendium Part II:ICAP  klmn'XX' B'  XXXXXX-X6XXX MethodIO1XX=(#PartII:ICAP   ?C' mxdEox? E(  XXX PartII:ICAP @(# MethodIO1   ?C' LxdEcx?  G)  XXXXXX-X6XXX?C' xdEx?   Revised11/92 E(#Page  1   I*  XXX?C' xdEx?   Page  1  >(#Revised11/92 pzJ0CPt2-AACompendium Method, Part II: AA&%XXp&%%&  qrst'XX')` * B'  &%XXp&%%&pX6X%p&-X6XXpX6 MethodIO10(#PartII:AtomicAbsorption   ?C' mxdEox? E(  &%XXp&%%& PartII:AtomicAbsorption 00@(# MethodIO1   ?C' ]xdE_x? . G)  &%XXp&%%&pX6X%p&-X6XXpX6?C' xdEx?   Revised11/92 E(#Page  1   I*  &%XXp&%%&?C' xdEx?   Page  1  >(#Revised11/92  Level 1 Level 2 Level 3 Level 4 Level 5'dxd('2$ T!   (!$ Table    uwxvA<< b {"   B.` hp x (#XB@'' TABLE21. p      x   *}~ ddd Xdd Xdd X##,d ,td ,td ,td ,td ,rt +  1"  1X XXX ?0!|| ?EPArecommendedCEtestmethodsa B/$||" B SD,||   SProtocols ;,! ;Enclosureverification ;,!" ;Liquidinput(L) ;,! " ;Capturedemissions(G) ;,! " ;Fugitiveemissions(F)or(FB) ?,!" ?CEformula SD,"   8SPTE 2# 2M204 ;,!" ;NA ;,!" ;NA ;,!" ;NA ?,!" ?Assume100% SD," 8  STTEgas/gas 2#,, 2M204 ;,!XX" ;NA ;,!XX" ;M204BorM204C ;,!,," ;M204D ?,!XX" ?G/(G+F) SD,XX"   STTEliquid/gas 2#\ \ ! 2M204 ;,! "" ;M204AorM204F ;,!0 0 %" ;NA ;,! &" ;M204D ?,! '" ?(LF)/L SD, ("   SBEgas/gas 2#` ` * 2M204 ;,! +" ;NA ;,! ," ;M204BorM204C ;,!` ` ." ;M204E ?,! /" ?G/(G+FB) Q@, 0"   HQBEliquid/gas 4#tt2 4M204 =,!3" =M204AorM204F =,!HH6" =NA =,!7" =M204E ?,!8" ?(LFB)/L<209" 0 H   <̀aM=EPAMethod;NA=notapplicable   :  pp> Ї('2$ T!    dTable_A&0 d d2 H`$ d  Level 1 Level 2 Level 3 Level 4 Level 5($ (    ) wvM << deUU )ED~=~left({4~area}over!right)^{0.5} w#   B.` hp x (#XB' Eq.1XXEDXX\XX,JhXX, jXX,jXX,iXXJoXX qXXqXXp3XXXK4XXKareaXXL!%0u.5 )ED~=~left({4~area}over!right)^{0.5} w#   B.` hp x (#XB' Eq.1XXEDXX\XX,JhXX, jXX,jXX,iXXJoXX qXXqXXp3XXXK4XXKareaXXL!%0u.5 P~=~{aoverx_{avg}}100 w#   B.` P hp x (#XB=.@ Eq.2XXPXXFX7XXi~aXXxi8avgXXx100 $a~=~{tSUB{0.975}~s}over{SQRTn} w#   B.` P hp x (#XB=.@ Eq.3XX# aXX  X2XXtxe0e.e975XX`sgXOXXgLn Js~=~left({sumfrom{i~=1}ton(x_i~~x_{avg~})^2}over{n1}right)^{0.5} w#   B.` P hp x (#XB=.@ Eq.4XXsXXXXBhXXjXXjXXjXXJjXX jXXjXXiXXBoXXqXXqXXqXXJqXX qXXqXXpJ"XAXXIn`7i7:71XX(XX9xiXX^XX.xavgXX)H'2XXLnXX@LXXL15 0 . 5 )x_avg~=~{sumfrom{i~=1}tonx_i}overn w#   B.` P hp x (#XB=.@ Eq.5XX#xavgXXu XXXIbn7i771XXVxiXXLnTable_C 'a~=~{(4.30)~(4.51)}oversqrtn=11.20 s w#   'X X'=.@ Eq.6XX# aXX  X2XXy(XXxy4XXy.XXhy30XXXy)XX(y(XXy4XXy.XXy51XXy)XOXXLnXX XX 11XX .XX 20 $P~=~{{11.2}over{110.8}}100~=~11.11 s w#   'X X'=.@ Eq.7XXPXXX XXX-K11XXK.XXK2XXL110XXYL.XXL8XXh100XX(XX11XX.XX`11 *a~=~{(2.57)~(6.11)}over{SQRT6}~=~6.41 w#   B.` hp x (#XB=.@ Eq.8XX# aXX  X2XXy(XXxy2XXy.XXhy57XXXy)XX(y(XXy6XXy.XXy11XXy)XOXXL6XXo XX? 6XX .XX/ 41 "P~=~{{6.41}over{96.6}}100~=~6.64 w#   B.` hp x (#XB=.``@ Eq.9XXPXX XXXK6XXiK.XXK41XXL96XXL.XXYL6XX100XXXX6XX.XXp64 )a~=~{(2.31)~(5.33)}over{SQRT9}~=~4.10 w#   B.` hp x (#XB=.pp@ Eq.10XX# aXX  X2XXy(XXxy2XXy.XXhy31XXXy)XX(y(XXy5XXy.XXy33XXy)XOXXL9XXo XX? 4XX .XX/ 10 !P~=~{4.10}over{95.7}100~=~4.28 w#   B.` hp x (#XB=.pp@ Eq.11XX#PXX XXXK4XXxK.XXK10XXL95XXL.XXhL7XX100XXXX4XX.XX28 )LC_1=x_{avg}{t_{0.90}s}oversqrtn w#   B.` hp x (#XB=.pp@ Eq.12XX# LC1XXc XX xSavgXXC  X2XXtpe0e.e90XXs XOXX Ln 5LC_1=94.1{{(1.886)(3.55)}oversqrt3}=90.23 w#   ?+ ` hp x (#X?=.pp@ Eq.13XX LC1XXT XX 94XX .XX4 1XX !XB2XXay(XXy1XXQy.XXy886XX1y)XXy(XX!y3XXy.XX y55XX y)hXOXXhL3XX XX 90XX .XXx 231  ?LEVEL 5Using 1-5 levels for paragraph numberingI.A.1.a.(1)(a)i)a),./*0 Cw}complevelCompendium auto numberingI.A.1.a.(1)(a)i)a) CRight ParRight-Aligned Paragraph NumbersI.A.1.a.(1)(a)i)a) ()' CMRIREPORTMRI Report with Level 1 flushed leftI.A.1.a.(1)(a)i)a)  ?u{EPA.STYEPA Style with TOC markingI.A.1.a.(1)(a)i)a)#|x <6X9`("Courier 10cpiXx6X@8;X@) `*Times New RomanTT&&m P7&P*`s New RomanTT P7P*`s New RomanTTXXw P7XP)`s New RomanTT&&m P7&P2 H`$ier 10cpiTTX&d H@ QX@( T$  HP DeskJet 820C Series Printer,(,,,,,(0{#* EEDEEJ!'lUTABLE A T!   _Ԁ@ GUIDELINESFORDETERMINING@!CAPTUREEFFICIENCY@*@hh#January9,1995  T#% @ GUIDELINESFORDETERMINING  CAPTUREEFFICIENCY  @hh#CandaceSorrell@ SourceCharacterizationGroupA(MD19)@P P EmissionMonitoringandAnalysisDivision@ OfficeofAirQualityPlanningandStandards@@ @ U.S.EnvironmentalProtectionAgency@0 0 ResearchTrianglePark,NC27711@hh#January9,1995  )D%- 8 XXdXXd8@"TABLEOFCONTENTS  H!H!G(#Page X T@X` X (#%'0*,.8135@8:<H?AXT8   1.0  INTRODUCTIONX X EX . ""J(#  1 P 8  0`     1.1 ` PurposeX X EX . ""J(#` ` 1 $ 8  0`     1.2 ` BackgroundX X EX .""J(#` ` 1   8  0`     1.3 ` DocumentOrganizationX X EX .88)""J(#` ` 2 |  8   2.00  RECOMMENDEDCAPTUREEFFICIENCY(CE)PROTOCOLSAND$ t      TESTMETHODSX X EX . ""J(#3  H  8  0`     2.1 ` PermanentTotalEnclosureX X EX .-""J(#` ` 6    8  0`     2.2 ` TemporaryTotalEnclosureX X EX .-""J(#` ` 7   8  0`     2.3 ` BuildingEnclosureX X EX .&""J(#` ` 9 t  8   3.0  REQUIREMENTSFORALTERNATIVECEPROTOCOLSX X EX .@@8""J(#  9 l  8  0`     3.1 ` DataQualityObjectiveX X EX .*8"8"I(#` ` 10 @    3.2LowerConfidenceLimitApproach.........158  0`     3.3 ` AdditionalCriteriaX X EX .HH'8"8"I(#` ` 20    3.4 ` ReportingRequirementsforAlternative l    ` CEProtocolsX X EX . 8"8"I(#21 @ Ѐ3.5RecordkeepingRequirementsforAlternativèCEProtocols..................224.0  MULTIPLELINETESTING................22    4.1AggregateSampling................2123  4.2MultipleLines/CommonControlDevice.......21435.0  REFERENCESX X EX . 8"8"I(#224  APPENDIXK.` hp x (#XX (#XK  0   8 XXdXXd81.0INTRODUCTION    1.1Purpose  p   TheprimarypurposeofthisdocumentistoprovidetechnicalguidancetoU.S.EnvironmentalProtectionAgency(EPA)RegionalOfficesregardingcaptureefficiency(CE)testing.ThedocumentmayalsoproveusefultoStateandlocalagencypersonnelandownersandoperatorsofstationarysourcesrequiredtodetermineCE. 1.2Background   p    InApril1990,EPAissuednewguidanceonCEtesting.1This 0 guidancereplacedthetraditionalliquid/gasmassbalancedeterminations,whichhadoftenresultedinverypoorprecisionandCEvalueswellinexcessof100percent.Thenewprotocolsinvolvedpermanenttotalenclosures(PTE's),temporarytotalenclosures(TTE's),andbuildingenclosures(BE's).ThisguidancewaslatercodifiedaspartoftheChicagoFederalimplementationplan(FIP)andincludedinthedocument"ModelVolatileOrganicCompoundRulesforReasonablyAvailableControlTechnology."2,3 "$   Inthebeginning,thenewprotocolsweremetwithresistancefromtheregulatedcommunity,primarilyongroundsofsafetyandexpense.Overtime,thesafetyissuehaslargelybeendispelledasithasbecomeclearthat,withproperdesignandoperation,PTE'sandTTE'sposeminimalrisk.However,ithasalsobecome +`&. clearthatinsomecases,thenewCEprotocolsaremorecostlythanthetraditionalliquid/gasprocedures.   ` Toaddressthecostissue,EPAtemporarilysuspendedcertainfederalapplicabilityaspectsofitsguidancewhileitembarkedona12monthstudyofalternativeswithpotentialforreducingCEtestingcosts.Thisdocumentisaresultofthatstudyandofsimultaneousstudiesvoluntarilyundertakenbyindustrygroups.Inthisdocument,EPApresentstechnicalguidanceonrecommendedproceduresandonalternativeproceduresthatmayreducecosts.RevisionstocurrentStateimplementationplans(SIP's)arerequiredtousethealternativeCEtestmethodsdescribedherein.Bycallingtheseprocedures"alternatives",theagencydoesnotintendtoimplythattheyaremoredifficulttoapprovethanthe"recommended"procedureswherethestatedcriteriaforapprovalaresatisfied.GuidanceforimplementingtheseSIPrevisionsisprovidedinthecovermemorandum. 1.3DocumentOrganization  0    InSection2.0,EPA'srecommendedprotocolsandtestmethodsaresummarized.Section3.0presentstwosetsofcriteriabywhichalternativeprocedurescanbeapproved,aswellastherecommendedreportingrequirementsforusingalternativeprocedures.Section4.0presentsatechnicaldescriptionforaggregatesamplingusingthebuildingasaTTEandfortestingmultiplelineswhichshareacommoncontroldevice. *0&.  2.0RECOMMENDEDCAPTUREEFFICIENCY(CE)PROTOCOLSANDTEST     METHODSB.` hp x (#XB     TheCEdeterminationprotocolsandtestmethodsrecommendedbyEPAarelargelyunchangedfromthoseissuedintheApril1990guidancememoandcodifiedintheChicagoFIP.1,2TheEPA   continuestorecommendtheuseofaPTE,TTE,orBEfordeterminingCE.WhenaTTEorBEisused,eitheragas/gasprotocoloraliquid/gasprotocolmaybeselected.TheEPAtestmethodsforcarryingouttherecommendedprotocolshavebeenrevisedandwillbeproposedintheFederalRegisterforaddition 8 to40CFR51,AppendixM,asMethod204throughMethod204F.Methods204through204EwereoriginallyreferredtoasProceduresT,L,G.1,G.2,F.1andF.2respectively.Some 0 changeshavebeenmadetothetestmethods,sothelatestversionofthemethods,whichisincludedasanappendix,shouldbeconsultedwhenplanningCEtesting.Thedraftrevisionstodatearesummarizedbelow.  First,AppendixB,section1.4,Samplingrequirements, ( x! originallycontainedarequirementthatthesamplingtimeforeachTTEandBEtestrunshouldbeatleast8hours,unlessotherwiseapproved.ThisprovisionhasbeenrevisedtospecifythateachTTEorBErunshallcoveratleastonecompleteproductioncycleandmustbeatleast3hourslong.Thesamplingtimeforeachrunneednotexceed8hours,eveniftheproductioncyclehasnotbeencompleted.Themaximumallowabletimefora +'/ testrunis24hours.AlternativesamplingtimeswouldbesubjecttoEPAapproval.  Second,anewsectiononauditsampleprocedureshasbeenaddedtoProcedureL,VOCInput.      ` Third,thedirectionsforanalysisauditshavebeenexpanded(newlyaddedforProcedureL)toincludeinformationonauditsampleavailabilityandreportingdirectionsforauditresults.  Next,anewmethod,Method204F(calledthedistillationapproach),hasbeenaddedformeasuringliquidVOCinput,asanalternativetoProcedureL.  Finally,ProceduresT,CriteriaforandVerificationofa 8 PermanentorTemporaryTotalEnclosure,andF.2,FugitiveVOC  EmissionsfromBuildingEnclosures,havebeenrevisedtoclarify 8 theacceptabilitycriteriaofaBEandtoclarifywhichopeningsinabuildingconstituteanexhaustpointoranaturaldraftopening(NDO).  Table21liststheprotocols,theirassociatedEPArecommendedCEtestmethods,andtheformulasforcalculatingCE.Table2-2liststheEPArecommendedCEtestmethodswiththefulltitleofeach.ThePTE,TTE,andBEarediscussedfurtherinSections2.1through2.3,respectively.  )p$, yzUEAz|7& p @ P@E,%#D,% (#(#                (#(#u *&. Ї  _TABLE22.*ddd Xdd Xdd X(#(#,rdd ,dd +    Method204  8 CriteriaforandVerificationofaPermanentorTemporaryTotalEnclosure    Method204A  H VolatileOrganicCompoundsContentinLiquidCapturedStream  H Method204B  4   VolatileOrganicCompoundsEmissionsinCapturedStream  4   Method204C     VolatileOrganicCompoundsEmissionsinCapturedStream(DilutionTechnique)  p  Method204D  (  VolatileOrganicCompoundsEmissionsinFugitiveStreamfromTemporaryTotalEnclosure    Method204E  d  VolatileOrganicCompoundsEmissionsinFugitiveStreamfromBuildingEnclosure  8  Method204F  $t VolatileOrganicCompoundsContentinLiquidInputStream(DistillationApproach)_ $t     2.1PermanentTotalEnclosure     Method204liststhePTErequirementsandtheproceduresforverifyingthatanenclosurequalifiesasaPTE.APTEisanenclosurethatcompletelysurroundsasourcesuchthatallvolatileorganiccompound(VOC)emissionsarecontainedanddirectedtoacontroldevice.IfanenclosuremeetsthecriterialistedbelowthentheenclosureisaPTEandtheCEforthesourcemaybeassumedtobe100percentandneednotbemeasured.ThePTEcriteriaareasfollows:  1.AnyNDOshallbeatleast4equivalentopeningdiametersfromeachVOCemittingpoint.An"equivalentdiameter"isthediameterofacirclethathasthesameareaastheopening.Theequationforanequivalentdiameter(ED)is: +&4 TD@zHx p @Xdddddddd@Exd*<' L@h (#(#   (#(#ForacircularNDO,thisequationsimplyreducestothediameteroftheopening.    H    2.ThetotalareaofallNDO'sshallnotexceed5percentofthesurfaceareaoftheenclosure'swalls,floor,andceiling.  3.Theaveragefacevelocity(FV)ofairthroughallNDO'sshallbeatleast200ft/min.ThedirectionofairflowthroughallNDO'sshallbeintotheenclosure.  4.AllaccessdoorsandwindowswhoseareasarenotincludedasNDO'sandarenotincludedinthecalculationofFVshallbeclosedduringroutineoperationoftheprocess.4 8   5.Alltheexhaustgasesfromtheenclosurearedirectedtothecontroldevice.  IfthePTEcriteriaarenotmet,thenCEmustbemeasured. 2.2TemporaryTotalEnclosure   ("   Method204liststheTTErequirementsandthetestproceduresforverifyingthatanenclosurequalifiesasaTTE.ATTEisanenclosuretemporarilyinstalledspecificallyfortheCEtest.4ForanenclosuretoqualifyasaTTE,thecriterialisted '"* belowmustbemet.ThesefivecriteriaensurethatallVOC'sarecapturedformeasurementwhileminimizingdisruptionof *0&. thecapturenormallyachievedbytheexistingcapturedevice(s)intheabsenceofaTTE.4TheTTEcriteriaareasfollows: X   1.AnyNDOshallbeatleast4equivalentopeningdiametersfromeachVOCemittingpoint.An"equivalentdiameter"isthediameterofacirclethathasthesameareaastheopening.Theequationforanequivalentdiameter(ED)is:TD@zHx p @Xdddddddd@Exd*<' L@h (#(#   (#(#ForacircularNDO,thisequationsimplyreducestothediameteroftheopening.      2.ThetotalareaofallNDO'sshallnotexceed5percentofthesurfaceareaoftheenclosure'swalls,floor,andceiling.  3.Theaveragefacevelocity(FV)ofairthroughallNDO'sshallbeatleast200ft/min.ThedirectionofairflowthroughallNDO'sshallbeintotheenclosure.  4.AllaccessdoorsandwindowswhoseareasarenotincludedasNDO'sandarenotincludedinthecalculationofFVshallbeclosedduringroutineoperationoftheprocess.4 % !(   5.AnyexhaustpointfromtheTTEshallbeatleast4equivalentductorhooddiametersfromeachNDO.  TwoprotocolsmaybeusedtomeasuretheCEusingaTTE,a *&. gas/gasprotocoloraliquid/gasprotocol.TheassociatedtestmethodsandCEformulaforeachprotocolarelistedinTable21. 2.3BuildingEnclosure  P   Buildingenclosureprotocolsinvolveusingthebuildingthathousestheprocessastheenclosure.First,onemustverifythattheBEmeetstherequirementsforaTTEthatarepresentedinMethod204.Then,usingtheproceduresspecifiedinMethod204E,onemustidentifyalltheemissionpointsfromthebuildingenclosure(e.g.,roofexhausts,windows,etc.)anddeterminewhichemissionpointsmustbetested.TestproceduresaregivenfordeterminingtheflowrateandVOCconcentrationintheexhaustfromeachofthevariousemissiontestpoints.  AswithaTTE,twoBEprotocolsmaybeusedtomeasuretheCE,agas/gasprotocoloraliquid/gasprotocol.TheassociatedtestmethodsandCEformulaforeachprotocolarelistedinTable2-1. 3.0REQUIREMENTSFORALTERNATIVECEPROTOCOLS  H    Toprovideflexibility,EPAhasdevelopedtwosetsofapprovalcriteriawhich,wheneitherofthemismet,allowtheuseofthedataobtainedwiththealternativeprotocolsandtestmethodsfordeterminingCE.AlternativeCEprotocolsandtestmethodsmustmeeteithertherequirementsofthedataqualityobjective(DQO)approachorthelowerconfidencelimit(LCL)approachandtheadditionalcriteriapresentedbelow.TheDQO, *H&. LCL,andadditionalcriteriaaredescribedinSections3.1,3.2,and3.3,respectively.TherecommendedreportingrequirementsforusingalternativeCEprotocolsandtestmethodsarediscussedinSection3.4.  NOTE: AlthoughtheMethod204testserieswasdevelopedfor P  TTEandBEtesting,thesameprocedurescanalsobeusedinanalternativeCEtestmethod.Forexample,atraditionalliquid/gasmassbalancetestcouldemployMethod204FtomeasureliquidVOCinputandMethod204BtomeasurecapturedVOCemissions. 3.1DataQualityObjectiveApproach  X e  ThepurposeoftheDQOistoallowsourcestousealternativeCEtestprocedureswhileensuringreasonableprecisionconsistentwithpertinentrequirementsoftheCleanAirAct.TheDQOrequiresthatthewidthofthe2sided95percentconfidenceintervalofthemeanmeasuredvaluebelessthanorequalto10percentofthemeanmeasuredvalue(seeFigure1).Thisensuresthat95percentofthetime,whentheDQOismet,theactualCEvaluewillbe+5percentofthemeanmeasuredvalue "$ (assumingthatthetestprotocolisunbiased). *H&. 򀀀UCL95󀀀  Ѐ"a"<0.05xavg X 򀀀xavg󀀀95%confidencelimit P Ѐ"a"<0.05xavg   򀀀LCL95 P    Figure1.Deviationaround95percent(2sided) x   (#   H  confidenceinterval.B.` P hp x (#XBWhere:` a=0 P distancefromtheaveragemeasuredCEvaluetothe H  endpointsofthe95percent(2sided)confidenceintervalthatmeetstheDQOforthemeasuredvalue. P s#P s# xx ` LCL95= P Lower95percentconfidencelimit  xx ` UCL95= P Upper95percentconfidencelimit @   ` xavg= P AverageCEvalue. 8 =.TheDQOcalculationisasfollows:WGCz XXx p @Xdddddddd@Ed#@ LX s#s#     s#s#TD@zHx p @Xdddddddd@E0dQ"@ L0}߰where:K.` P hp x (#` P XKpp` a=0 P distancefromtheaveragemeasuredCEvalueto &!) theendpointsofthe95-percent(2sided)confidenceintervalforthemeasuredvalue. P s#P s# pp` n=numberofvalidtestruns. +&/ pp` P=DQOindicatorstatistic,distancefromthèaveragemeasuredCEvaluetotheendpointsof0 ` 0P ` s#` s# ` the95-percent(2sided)confidenceinterval,8@P s#P s#8 @` expressedasapercentoftheaveragemeasuredCEvalue. P s#P s# pp` s=samplestandarddeviation. ` t0.975=tvalueatthe95-percentconfidencelevel(see P  ЀTable3-1).` xavg=averagemeasuredCEvalue(calculatedfromallvalid    8 ` 8P ` ` testruns). P P  88` xi=theCEvaluecalculatedfromtheithtestrun. H  ̀ThesamplestandarddeviationandaverageCEvaluearecalculatedasfollows:TD@zHx p @Xdddddddd@E@d: 4@ L@` s#s#      s#s#TD@zHx p @Xdddddddd@E dH@ L H s#s#      s#s#K.` hp x (#` P XK  IndividualCEvaluesgreaterthan105percentareinvalidandcannotbeusedtocalculatetheaverageCEandDQO.Thesourcemusthave3validtestrunstousetheDQOapproach.TheDQOisachievedwhenP5percent.Inordertomeetthis $L ' objective,facilitiesmayhavetoconductmorethanthreetestruns.ExamplesofcalculatingP,givenafinitenumberoftestruns,areshownbelow.    +&/ *r ddrdd rdd s#s#r,d ,td ,td ,d ,td ,t +  /  l/   Numberoftestruns,n =,!,|  =  t0.975 =,!,|  =t0.90 4#,| 4Numberoftestruns,n 4#,| 4t0.975 6#,|  6t0.90 J;#,|  0 l  PJ  2 ;,!   ;@  o12.706 2# 2@$%3.078 2# 2@1{12 2# 2@;2.201 6# 6@C 1.363 J;# P  PJ  3 ;,! d  ;@C C o4.303 2# d 2@$%1.886 2# d 2@1{13 2# d 2@;2.179 6# d 6@C 1.356 J;# d P  PJ@ 4 2#p  2@C C o3.182 2#p  2@$%1.638 2#p  2@1{14 2#p  2@;2.160 6#p  6@C 1.350 J;#p  P  PJ@ 5 2#  2@C C o2.776 2#   2@$%1.533 2# ! 2@1{15 2# " 2@;2.145 6# # 6@C 1.345 J;# $ P  PJ@ 6 2#( x% 2@C C o2.571 2#( x& 2@$%1.476 2#( x' 2@1{16 2#( x( 2@;2.131 6#( x) 6@C 1.341 J;#( x* P  PJ@ 7 2# + 2@C C o2.447 2# , 2@$%1.440 2# - 2@1{17 2# . 2@;2.120 6# / 6@C 1.337 J;# 0 P  PJ@ 8 2#0 1 2@C C o2.365 2#0 2 2@$%1.415 2#0 3 2@1{18 2#0 4 2@;2.110 6#0 5 6@C 1.333 J;#0 6 P  PJ@ 9 2#< 7 2@C C o2.306 2#< 8 2@$%1.397 2#< 9 2@1{19 2#< : 2@;2.101 6#< ; 6@C 1.330 J;#< < P  PJ@ 10 2# = 2@C C o2.262 2# > 2@$%1.383 2# ? 2@1{20 2# @ 2@;2.093 6# A 6@C 1.328 H7# B P  H@ 11 4#DC 4@C C o2.228 4#DD 4@$%1.372 4#DE 4@1{21 4#DF 4@;2.086 6#DG 6@C 1.3253)'DH 0   3TABLE31.tvalues.  FacilityAconductedaCEtestusingatraditionalliquid/gasmassbalanceandsubmittedthefollowingresults:?+ ` hp x (#X? ` Run   CE P  ` 1   96.1 @R  ` 2   105.0 8T  ` 3   101.2  V therefore:*X ` X*n=311 t0.975=4.30 0'"^  xavg=100.8 (($` s=4.51 (,x'd TD@zHx p @Xdddddddd@Ed  @ LJ s#s#  s#s#TD@zHx p @Xdddddddd@Ede @ L s#s#  s#s#0X` X 0SincethefacilitydidnotmeettheDQO,theyranthreemoretestruns.  Run `  CE     4 `  93.2 H    5 `  96.2 @    6 `  87.6  ThecalculationsforRuns16areasfollows:'X X'n=611 t0.975=2.57   xavg=96.6 8 s=6.11H.` hp x (#X HTD@zHx p @Xdddddddd@Ed%  @ LJ  s#s#  s#s#TD@zHx p @Xdddddddd@E du@ L   s#s#  s#s#ThefacilitystilldidnotmeettheDQO.Theyranthreemoretestrunswiththefollowingresults: *&.   Run `  CE    7 `  92.9 X   8 `  98.3 P   9 `  91.0   ThecalculationsforRuns19areasfollows:'X X'n=911 t0.975=2.31    xavg=95.7 H  s=5.33H.` hp x (#X HTD@zHx pX @Xdddddddd@Ed%  @ LJ  s#s#  s#s#TD@zHx p @Xdddddddd@Edu@ L  s#s#  s#s#Basedontheseresults,theaverageCEfromtheninetestruns  canbeusedtodeterminecompliance. 3.2LowerConfidenceLimitApproach  0  ThepurposeoftheLCLapproachistoprovidesources,whomaybeperformingmuchbetterthantheirapplicableregulatoryrequirement,ascreeningoptionbywhichtheycandemonstratecompliance.TheapproachuseslessprecisemethodsandavoidsadditionaltestrunswhichmightotherwisebeneededtomeettheDQOwhilestillbeingassuredofcorrectlydemonstratingcompliance.Itisdesignedtoreduce"falsepositive"orso *0&. called"TypeIIerrors"whichmayerroneouslyindicatecompliancewheremorevariabletestmethodsareemployed.BecauseitencouragesCEperformancegreaterthanthatrequiredinexchangeforreducedcompliancedemonstrationburden,thesourcesthatsuccessfullyusetheLCLapproachcouldproduceemissionreductionsbeyondallowableemissions.Thus,itcouldprovideadditionalbenefitstotheenvironmentaswell.  TheLCLapproachcomparesthe80percent(2sided)LCLforthemeanmeasuredCEvaluetotheapplicableCEregulatoryrequirement.TheLCLapproachrequiresthateithertheLCLbegreaterthanorequaltotheapplicableCEregulatoryrequirementorthattheDQOismet.AmoredetaileddescriptionoftheLCLapproachfollows:  Asourceconductsaninitialseriesofatleastthreeruns.Thesourcemaychoosetoconductadditionaltestrunsduringtheinitialtestifitdesires.AllindividualrunsresultinginCEvaluesabove105percentareinvalidandcannotbeusedincalculatingtheaverageCEandtheLCL.IfthedatausingonlythevalidtestrunsmeetstheDQO,thentheaverageCEvalueisusedtodeterminecompliance.IfthedatadoesnotmeettheDQOandtheaverageCE,usingallvalidtestruns,isabove100percentthenthetestsequenceisconsideredinvalid.Atthispointthefacilityhastheoptionof(a)conductingmoretestrunsinhopesofmeetingtheDQOorofbringingtheaverage *&. CEforalltestrunsbelow100percentor(b)discardingallprevioustestdataandretesting.[Thepurposeofthisrequirementistoprotectagainsttestmethodswhichmaybeinherentlybiasedhigh.ThisisimportantbecauseitistheoreticallyimpossibletohaveaCEgreaterthan100percentandtheLCLapproachonlylooksatthelowerendvariabilityofthetestresults.ThisisdifferentfromtheDQOwhichallowsaverageCEvaluesupto105percentbecausetheDQOsetsbothupperandlowerlimitsontestvariability.]AtanypointduringtestingwhentheresultsmeettheDQOandtheaverageCEislessthan105percent,theaverageCEcanbeusedfordemonstratingcompliancewiththeapplicableregulatoryrequirement.Similarly,iftheaverageCEisbelow100percentthentheLCLcanbeusedfordemonstratingcompliancewiththeapplicableregulatoryrequirementwithoutregardtotheDQO.  TheLCLiscalculatedata80percent(twosided)confidencelevelasfollows:TD@zHx p @Xdddddddd@E  dMQ"@ L }  s#s#   s#s#where:?+ ` hp x (#X?` LC1=LCLata80percent(twosided)confidencelevel.  )p$, pp` n=numberofvalidtestruns. +&/ pp` s=samplestandarddeviation.PP` t0.90=tvalueatthe80-percent(twosided)confidence X Ѐlevel(seeTable3-1).` xavg=averagemeasuredCEvalue(calculatedfromallvalid $ Ѐtestruns). ` E.` hp x (#` XE  TheresultingLC1iscomparedtotheapplicableCEregulatory $ t  requirement.IfLC1exceeds(i.e.ishigherthan)theapplicable    regulatoryrequirement,thenafacilityisininitialcompliance.However,iftheLC1isbelowtheCErequirement,thenthefacility l  mustconductadditionaltestruns.AfterthispointthetestresultswillbeevaluatednotonlylookingattheLCLbutalsotheDQOof+5percentofthemeanata95percentconfidence d level.IfthetestresultswiththeadditionaltestrunsmeettheDQObeforetheLCLexceedstheapplicableCEregulatoryrequirement,thentheaverageCEvaluewillbecomparedtotheapplicableCEregulatoryrequirementfordeterminationofcompliance.  IfthereisnospecificCErequirementintheapplicableregulation,thentheapplicableCEregulatoryrequirementisdeterminedbasedontheapplicableregulationandanacceptabledestructionefficiencytest.IftheapplicableregulationrequiresdailycomplianceandthelatestCEcompliancedemonstrationwasmadeusingtheLCLapproach,thenthecalculatedLC1willbethehighestCEvaluewhichafacilityis )D%-  +&/ allowedtoclaimuntilanotherCEdemonstrationtestisconducted.Thislastrequirementisnecessarytoassurebothsufficientlyreliabletestresultsinallcircumstancesandthepotentialenvironmentalbenefitsreferencedabove.  AnexampleofcalculatingtheLCLisshownbelow.FacilityB'sapplicableregulatoryrequirementis85percentCE.FacilityBconductedaCEtestusingatraditionalliquid/gasmassbalanceandsubmittedthefollowingresults:  Run `  CE @    1 `  94.2    2 `  97.6 @   3 `  90.5 8 therefore:?+ ` hp x (#X?pp` n=3PP` t0.90=1.886 0 ` xavg=94.1  pp` s=3.55TD@zHx p @Xdddddddd@E ud}  @ L J s#s#  s#s#E.` hp x (#` XESincetheLC1of90.23percentisabovetheapplicableregulatory % !( requirementof85percentthenthefacilityisincompliance.ThefacilitymustcontinuetoaccepttheLC1of90.23percentas  )p$, itsCEvalueuntilanewseriesofvalidtestsisconducted. *&.  3.3AdditionalCriteria     TheOfficeofAirQualityPlanningandStandards(OAQPS)hasdevelopedanadditionalsetofcriteriathatmustbeincorporatedintoalternativeCEprotocolsandassociatedtestmethodsinorderforthemtobeapproved.Thefollowingcriteriaapply:  1.ACEtestshallconsistofatleastthreesamplingruns.Eachtestrunshallbeatleast20minuteslong.Thesamplingtimeforeachrunshallnotexceed24hours.  2.Alltestrunsmustbeseparateandindependent.Forexample,liquidVOCinputandoutputmustbedeterminedindependentlyforeachrun.ThefinalliquidVOCsamplefromoneruncannotbetheinitialsampleforanotherrun.Inaddition,liquidinputforanentiredaycannotbeapportionedamongtestrunsbasedonproduction.  3.Compositeliquidsampleswillnotbepermittedtoobtainan"averagecomposition"foratestrun.Forexample,separateinitialandfinalcoatingsamplesmustbetakenandanalyzedforeachrun;initialandfinalsamplescannotbecombinedpriortoanalysistoderivean"averagecomposition"forthetestrun.  4.AllindividualtestrunsthatresultinaCEofgreaterthan105percentareinvalidandmustbediscarded.Atestmustconsistofatleast3validtestruns.  5.Ifthesourcecandemonstratetotheregulatoryagencythatarunshouldnotbeconsideredduetoanidentifiedtesting *0&. oranalysiserrorsuchasspillageofpartofthesampleduringshippingoranupsetorimproperoperatingconditionsthatisnotconsideredpartofnormaloperationthenthetestresultforthatindividualrunmaybediscarded.Thislimitedexceptionallowssourcestodiscardas"outliers"certainindividualrunswithoutreplacingthemwithavalidrunsolongasthefacilityhasatleast3validtestrunstousewhencalculatingitsDQOorLCL.Thisexceptionislimitedsolelytotestrunsinvolvingthetypesoferrorsidentifiedabove.  6.AllvalidtestrunsthatareconductedmustbeincludedintheaverageCEdetermination.TheindividualCEresultsandaverageCEresultscannotbetruncated(i.e.105percentcannotbereportedas100+percent).  7.FortheDQOapproachtheaverageCEforthetestprogramcannotbegreaterthan105percent.  8.AlternativetestmethodsformeasuringVOCconcentrationmustincludeathreepointcalibrationofthegasanalysisinstrumentintheexpectedconcentrationrange. 3.4ReportingRequirementsforAlternativeCEProtocols  "$   IfafacilitychoosestousealternativeCEprotocolsandtestmethods,thefollowinginformationshouldbesubmittedwitheachtestreporttotheappropriateregulatoryagency: *0&.   1.Acopyofallalternativetestmethods,includinganychangestoEPAreferencemethods,QA/QCproceduresandcalibrationprocedures.  2.Atablewithinformationoneachliquidsample,includingthesampleidentification,whereandwhenthesamplewastaken,andtheVOCcontentofthesample;  3.Thecoatingusageforeachtestrun(forprotocolsinwhichtheliquidVOCinputistobedetermined);  4.ThequantityofcapturedVOCmeasuredforeachtestrun;  5.TheCEcalculationsandresultsforeachtestrun;  6.TheDQOorLCLcalculationsandresults;and  7.TheQA/QCresults,includinginformationoncalibrations(e.g.,howoftentheinstrumentswerecalibrated,thecalibrationresults,andinformationoncalibrationgases,ifapplicable). 3.5RecordkeepingRequirementsforAlternativeCEProtocols.  0   Arecordshouldbekeptatthefacilityofallrawdatarecordedduringthetestinasuitableformforsubmittaltotheappropriateregulatoryauthorityuponrequest. 4.0MULTIPLELINETESTING  "$  4.1AggregateSampling  X$&   ApotentialwaytoaddfurtherflexibilitytodeterminingCEistoutilizeaggregatesamplingusingabuildingenclosure.Thisinvolvestestingallregulatedlinesinthebuildingenclosuresimultaneously.Itmustbenotedthatthistechnique +`&. maynotbefeasibleforallfacilities.Theapplicableregulationsmustbewrittentoallowaggregatesamplingandastandardmustbesetforthebuildingasaregulatedentity.ThebuildingmustbeabletomeetthecriteriainMethod204forabuildingenclosureandthebuildingenclosureprotocoldescribedinSection2.3mustbefollowed. 4.2MultipleLinesWithCommonControlDevice      AsecondpotentialwaytoaddfurtherflexibilityfordeterminingCEistotestmultiplelinessharingacommoncontroldevicesimultaneously.Itmustbenotedthatthistechniquemaynotbefeasibleforallfacilities.Theapplicableregulationsmustbewrittentoallowmultiplelinetesting.Thefacilitymustalsomeetadditionalguidelinesasfollows:  1.Themultiplelinesmustshareacommoncontroldevice.̀  2.Multiplelinetestingmaybeperformedusingrecommended H EPAprotocolsandtestmethodsoralternativeCEprotocolsandtestmethods.ThealternativeprotocolsmustmeettherequirementsofSection3.0.  3.ThelinesthataretestedincombinationareconsideredtobeincomplianceonlyiftheCEdeterminedforthecombinationoflinesmeetsthemoststringentCErequiredforanyindividual line. '"*    5.0REFERENCES   H4X hp x (#XH1.0  MemorandumandattachmentsfromSeitz,J.S.,EPA/SSCD,to p RegionalOfficeairdivisiondirectors.April16,1990.GuidelinesfordevelopingaStateprotocolforthemeasurementofcaptureefficiency. s#s# 2.0  OfficeoftheFederalRegister.Controlstrategy:Ozone   controlmeasuresforCook,DuPage,Kane,Lake,McHenryandWillCounties.40CFR52.741.Washington,DC.U.S.GovernmentPrintingOffice.1992. s#s# 3.0  OAQPS.ModelVolatileOrganicCompoundRulesforReasonably   AvailableControlTechnology.U.S.EnvironmentalProtectionAgency.ResearchTrianglePark,NC.June1992.pp.340349. s#s# 4.0  TheMeasurementSolution:UsingaTemporaryTotalEnclosure , forCaptureEfficiencyTesting.EPA-450/4-91020.August1991.ResearchTrianglePark,NC. s#s# 5.0  Mendenhall,W.IntroductiontoProbabilityandStatistics, P ThirdEdition.Belmont,California.DuxburyPress.1971.p.419. s#s#   $t @*@11&APPENDIX@ ContainsMethods204thought204Fwhichcanbefound |  @QQ"ontheEMTICBBS