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# OAR Box 1875 Prepped byOllie Stewart



### Document

Number: 

# 37 ) ll-E-5 5 Docket Number: 

# A-90-1 9

Printed 12/1/200811:12:46

AM Sheet 37 of 86P. 2



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, A-90-1 9 

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# "5 5 •.W' l ^ ^^Or'\ \ MEETIN G SUMMAR

Y DATEr'EV'ji^ ^ Augus t 25 , 199 2 SUBJECT : Teleconferenc e t o Discus s Proces s Vent s Issue s ATTENDEES : Le s Evans , EPA/CP B

Linda Herring , EPA/SD B Sheil a Milliken , EPA/SD B Debbi e Stackhouse , EPA/SD B Rut hMead , Radia n Annett e Stanley , CM A(telephon e link ) Davi d Gustafson , Do wChemica l (telephon e link ) Jo e Woolbert , Eastma n Chemica l (telephon e link ) Th e purpos e o f th e teleconferenc e betwee n th e EPAan d CM A wa s t o discus s resolutio n o f th e tw o proces s ven t issue s liste d i n th e agend a (Attachmen t 1) . Regarding th e firs t issue , Sheil a Millike n state d tha t th e EPAstaf f plan s t o recommen d proposing a TR E "X " valu e o f 4 . I f th e TR E inde xvalu e o f a ven t strea m i s highe r tha n 4.0 , engineering assessmen t (rathe r tha n testing ) coul d b e use d t o determin e th e TRE , an d operating paramete r monitorin g woul d no t b e required . Th e reason s fo r selecting a valu e o f 4. 0 ar e summarize d o n th e agenda (se e Attachmen t 1) . Th e CM A representative s indicate d agreemen t wit ha valu e o f 4 . Th e draf t wording o n th e us e o f engineering assessmen t t o determin e TR E wa s discussed , an d mino r clarification s wer e adde d b ythos e present . Attachmen t 1 show s th e wording , wit hrevision s marked . . ACM

Arepresentativ e aske d i f th e us e o f compute r simulatio n model s i s acceptable . Th e EPAresponde d tha t i f th e mode l i s base d o n accepte d chemica l engineering principles , i t woul d b e allowe d unde r paragraph(1)(iii)(D ) o f th e attachment . However , th e EPArepresentative s di d no t wan t t o ad d languag e t o th e paragrap hspecificall yallowing th e us e o f model s because , whil e some model s ar e acceptable , other s mayb e unsound . I t wil l depend o n th e technica l basi s o f th e model . Abrie f discussio n

MCH/07 6 telecon.mt gP. 3

o n th e us e o f model s fo r engineering assessmen t mayb e adde d t o guidanc e material s o r th e preamble . Ms . Millike n close d th e meeting b ystating tha t a type d versio n o f change s t o th e proces s vent s portio n o f th e hazardou s organic s NESHAP (HON ) regulatio n wil l b e maile d t o CM Ao n Augus t 31 , 1992 . Th e CM Aaske d i f theywoul d hav e an opportunit y t o comment . Th e EPArepresentative s sai d tha t CM Acoul d commen t but , becaus e o f schedul e constraints , th e EPAwil l nee d t o judg e th e significanc e o f an ycomment s an

d determin e whethe r theywil l b e addresse d befor e o r afte r proposal .

MCH/07 6 telecon.nt gP. 4

ATTACHMEN

T 1P. 5

AGEND A CONFERENC E CALL CMA/EP A TUESDAY , AUGUS T 25 , 199 2

2- 3 P.M . I . Issues : Wil l propos e th e following fo r commen t afte r

proposa l TRE "x " value issue : • EPAwil l propos e a valu e o f 4 . Thi s i s base d o n th e following :

• CM Aanalysi s proposing "x " valu e o f 3 wa s reasonable , bu t base d solel yo n "engineering judgement" . EPAoriginall yuse d "engineering judgement " t o come up wit h8 .

• "x " valu e o f 4 wil l tak e int o consideratio n an y proces s variability .

• Allow s consistenc ywit hothe r rules . Base d o n th e tota l populatio n o f vent s i n th e HONframework , an * "x " valu e o f 4 appear s t o b e mor e representative .

• Languag e ha s bee n adde d t o th e regulatio n Engineerin

g Assessmen t Issue : • EPAha s com e up wit hlanguag e base d o n it s understanding o f th e proposa l receive d fro mCMA . (Se e attachment )

• Comments ? II . Wrap-u

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ATTACHMEN T T O r\Ce^Or" J

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