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# OAR Box 1394 Prepped byOllie Stewart



### Document

Number: 

# 50 ) ll-C-2 0 Docket Number: 

# A-94-5 2

Printed 7/3/20087:52:01 AM

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^ i0ST<r* UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENCY = ^x&si

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Researc h Triangl e Park , Nort h Carolin a 2771 1 

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## mp f ? w Mr . E d Hayas h Sale s and Technica l Suppor t Manage r fo r Plastic s Additive s BYK-Chemi e US A 52 4 Sout hCherryStree t P.O . Bo x567 0 ' Wallingford , C T 06492-765 1 Dea r Mr . Hayash : Th e Environmenta l Protectio n Agenc y(EPA ) i s developing Nationa l Emission s Standard s fo r Hazardou s Ai r Pollutant s (NESHAP ) fo r th e reinforce d plastic s composite s industry . Th e NESHAP i s t o reflec t th e maximu machievabl e contro l technologya s require d bysectio n 112(d ) o f th e Clea n Ai r Ac t o f 1990 . Th e EP A i s currentl yinvestigating emissio n reductio ntechnique s and control s use d bymajo r source s (for example , thos e facilitie s tha t hav e th e potentia l t o emi t mor e tha n 1 0 ton s pe r yea r o f styrene) . Th e EP Ai s currentl yworking wit hrepresentative s o f th e reinforce d plastic s composite s industry , loca l an d stat e regulatoryagencies , an d environmenta l group s t o investigat e potentia l option s fo r setting a standard . Companie s suc ha s your s ca n hel p i n thi s effor t b yprovidin g informatio ntha t wil l b e use d t o develo p a numbe r o f regulatoryalternatives . On e optio n w e woul d lik e t o conside r i s a nemission s averaging approac hfo r determining compliance . Th e standar d woul d b e base d o n th e averag e emission s leve l achieve d b yth e bes t performin g facilitie s (i.e . thos e usin g pollutio npreventio ntechnigue s o r controls) . W e believ e thi s approac hwoul d provid e the industry wit ha grea t dea l o f flexibilit yand woul d provid e quantifiabl e emission s reductions . Suc ha n approac hwoul d als o provid e credi t fo r th e us e o f vapo r suppressant s suc ha s BYK-Chemie' s 74 0 additive . I n addition , w e ar e investigating a noptio n tha t woul d incorporat e th e us e o f vapo r suppressant s i f emission s averagin g i s no t used . I n orde r fo r u s t o determin e whethe r th e us e o f vapo r suppressant s i s a viabl e contro l option , i t i s necessaryt o obtai n informatio n o n the exten t o f thei r us e an d the condition s o f use . 

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# JP. 3

You r compan

ycoul d assis t u s i n obtaining informatio n s o tha t w e can explor e thes e regulatoryoption s further . A s w e discusse d i n ou r telephon e conversatio no f Augus t 11 , 1995 , w e woul d appreciat e you r providing informatio n o nth e us e o f BYK-Chemie' s suppressant . Th e informatio nw e ar e particularl y intereste d i n obtaining i s a lis t o f U.S . companie s tha t currentl yus e th e BYK-74 0 additive o r an yothe r additive s tha t suppres s vapo r emission s fro m thermose t resins . Thi s informatio n woul d greatl yassis t ou r developmen t o f regulatoryalternative s whic hcoul d potentiall yencompas s th e us e o f vapo r suppressants . Pleas e fee l fre e t o includ e an yothe r informatio ntha t yo u fee l i s importan t fo r EPAt o consider . I f yo u hav e an yquestion s regardin g thi s request , pleas e contac t m e a t (919 ) 541-2383 . Sincerely , Madelein e Stru

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d Consume r Product s Group Emissio nStandard s Divisio n

cc : Lind a Herring , Grou p Leade r Coating s and Consume r Product s Grou p