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# OAR Box 1875 Prepped byOllie Stewart



### Document

Number: 

# 49 ) ll-E-67 Docket Number: 

# A-90-1 9

Printed 12/1/200811:12:47

AM Sheet 49of 86P. 2 

### A-90-1 9 ll-E-6 7

o rf j UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENCY Offic e ofAi rQualit yPlannin g an d Standard s * •-VVl/Z" Researc h Triangl e Park , Nort h Carolin a 2771 1 V' n '",- , ", , r . 

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## . XlO ' y.\" DEC 2 I99 2 DE C
. ' > I99 2 PRO ^

MEMORANDU

M SUBJECT : CM

Aan d EPA/ES D Meeting o f Apri l 15 , 199 2 on Applicabilit yo f th e Hazardou s Organi c NESHAP (HON ) FROM : Jane t S . Meye r CW^T~ S - /^Y-W-c^ x

Standard s Developmen t Branch , ES D (MD-13 ) TO : Docke t A-90-19 , Hazardou s Organi c NESHAP :

Genera l Informatio n an d Proces s Vent s I . Purpos e Representative s o f th e Environmenta l Protectio n Agency' s (EPA's ) Emissio n Standard s Divisio n (ESD ) me t wit hth e Chemica l Manufacturer s Associatio n (CMA ) t o discus s way s t o clarif yth e applicabilit yo f th e draf t proposa l package . Th e objective s o f th e discussio n wer e t o identif ya metho d tha t woul d resul t i n minimu moverlap wit hothe r categorie s (e.g. , polymer s an d resins ) an d t o creat e a reproducibl e decisio nprocess . II . Plac e an

d Dat e o f Meeting Gues t Quarter s Hote l Researc hTriangl e Park , NC 8:0 0 a.m . - 12:0 0 p.m . Apri l 15 , 199 2 III . Attendee s Nam e Organizatio nPhone # Ja n Meye r EPA/SD B 91 9 541-525 4 Le s Evan s EPA/CP B 91 9 541-541 0 Davi d Gustafso n Do w51 7 636-295 3 TomKittlema n Dupon t 30 2 366-471 8 Am yMeyer s CM A20 2 887-137 0 Nor mMorro wExxo n Chemical s 50 4 359-722 6 Bo bRosenstee l EPA/CP B 91 9 541-560 8P. 3

IV . Discussio n Thi s meeting' s discussion s wer e a continuatio no f earlie r discussion s o n th e definitio n o f th e sourc e category . Key discussio n topic s were : (1 ) definitio no f product ; (2 ) allocatio n o f share d equipmen t among processes ; an d (3 ) ethylen e units . Thes e discussion s ar e summarize d below . Definitio n o f Produc t Th e discussio n o n th e definitio no f produc t focuse d o n severa l illustrativ e example s o f overlap o f SOCM I an d non-SOCM I chemica l manufacturing activities . Attachmen t 1 present s severa l illustrativ e example s o f situation s wher e question s ar e expecte d t o aris e i n applicatio n o f th e draf t rule :

Scenario s 1 an

d 3 illustrat e differen t type s o f recycle/recoveryoperations . Scenari o 2 illustrate s recycle/recoveryoperation s tha t ar e typicall yassociate d wit hpolyme r manufacturing operations . Scenari o 4 illustrate s question s o nboundarie s o f units . Scenari o 5 i s an exampl e o f a proces s whos e primary produc t i s no t a regulate d produc t bu t th e reactio nco produc t i s a regulate d product . Eac ho f thes e scenario s wa s discusse d considering whethe r thi s situatio n wa s intende d t o b e i n th e scop e o f th e sourc e category an d whethe r th e presen t decisio ncriteri a correctl yidentif y operation s tha t ar e subject . AUogatip n of . Share d Equipmen t Wher e equipment , suc ha s storag e vessel s an d transfe r racks , i s share d among chemica l manufacturing processe s an d sourc e categories , ther e wil l b e question s regarding whic hstandard applie s t o th e share d equipment . Th e approac hdiscusse d wa s t o allocat e equipmen t base d o npredominan t us e o f th e equipment . Thi s approac hwa s identifie d becaus e i t shoul d b e unbiase d an d shoul d resul t i n a mor e efficien t regulation . Th e following action s wer e agree d upo n t o answe r remaining outstanding questions . Th e CM Arepresentative s agree d t o develop additiona l flowdiagram s o nsolven t recoveryoperation s an d allocatio n o f storag e vessel s an d transfe r racks . Th e EPA representative s agree d t o confirmtha t distillatio noperation s tha t ar e a n integra l par t o f operation s o f anothe r sourc eP. 4

categoryar e being addresse d i nstandard s fo r tha t category . A specifi c exampl e o f thi s overlap i s th e standard fo r polymer s an d resins , an

d whethe r i t wil l includ e th e distillatio n operations . Ethylen e Unit s Th e fina l discussio ntopi c concerne d ethylen e unit s (olefi n units ) an

d whethe r theyar e considere d t o b e par t o f SOCM I an d thu s subjec t t o th e HON . Attachmen t 2 illustrate s th e relationshi p o f ethylen e unit s t o th e processe s considere d i n th e impac t analysi s fo r th e HON . Ther e wa s agreemen t betwee n EP Aan d CM Arepresentative s tha t th e HONprocesse s begi na t th e benzen e an d butadien e manufacturing unit s afte r separatio no f th e crud e butadien e an

d crud e benzen e stream s fro mth e mixe d streams . Thus , th e ethylen e uni t i s no t considere d t o b e par t o f th e SOCM I sourc e category . Th e EPArepresentative s agree d t o revie wth e sourc e categorylis t documentatio nt o determin e whic hcategoryo r industrygrou

p include s ethylen e units .Attachmen t 1

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