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# OAR Box 1384 Prepped by Charmelle Mathews



### Document

Number: 

# 187 ) ll-E-147 Docket Number: 

# A-94-5 2

Printed 7/2/2008 8:42:09 AM

Sheet 187 of 264P. 2 'i 04/09/9 8 TH

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X 60 5 33 5 026 8 j 04/0B/B 0 ID : 0 9 TQrJ.»l«>»41USa 4 RAVE N IND . re a Ki r n v (2100 2 Iff l 00^/00 3

From ; Date : Contact : Company : Contac tRepor t

Melani e Proctor , Pacifi c Environmental Services , Inc . (PES ) Apri l 8,199 8 Mr . Kur tDoede n Rave n Industries , Inc . Telephon e Number : (605 ) 336-275 0 Fa x Number : (605 ) 335-026 8 ;

EP A AI R DOCKE T

Contac tSummary : Ms . Procto r explaine d tha

tPE S i s workin g wit h th e U.S . EP A o n th e developmen to f a nationa l emissio n standard fo r th e reinforce d plasti c composite s industry . Sh e adde d tha tRave n Industrie s wa s contacte d t o verif y infonnatio n provide d i n th e 199 3 EP A screemn g surve y fo r thei r centrifugal castin g process . Ms . Procto rpointe d ou tthatth e EP A i s i n th e proces s o f establishin g emissio n standard s fo ral l majo r source s o f hazardou s ai r pollutant s (HAP ) thatreflec tmaximu m achievabl e contro l technolog y (MACT) . Sh e explaine d thatth e EPA i s currentl y reviewin g an y pollutio n preventio n o r reductio n measure s tha tar e bein g use d i n centrifugal castin g operations , i n order t o determin e th e MAC T floo r fo rthi s process . Ms . Procto r aske d Mr . Doede n i f Rave n Industrie s i s usin g an y pollutio n preventio n measure s fo r thei rcentrifugal castin g process . Sh e explaine d thatsuc h pollutio n preventio n measure s ma y includ e managemen to r eliminatio n o f ai rflo w through th e centrifuga l castin g ' : air, th e resin , o rth e mol d durin g applicatio n and cvrong^an c o f HA P i n th e resin . Se t Ni©-f<

_ Mr . Doede n indicate d thatRave n Industrie s doe s no thea tth e air , th e resin , o rth e mol d i n thei r centrifuga l castin g operation . H e als o pointe d ou tthaton e en d o f eac h o f th e 1 2 mold s i s close d wit h a n en d cap . Mr . Doede n explaine d tha tair i s draw

n fro m th e ope n en d o f

th e 1 2 molds . Mr. Doede n wa s no tsur e aboutth e exac tairflow draw n from eac h o f

th e mold s buth e indicate d tha t onl y on e fa n wa s use d t o dra w ai r from th e 1 2 mold s and thatthi s fan ha s a desig n ai rflow rat e o f 12,00 0 cubi c fee tpe rminut e (cfin) . H e added tha tth e ai rflo w from eac h mol d woul d likel y no t excee d 1,00 0 cf

m an d coul d possibl y b e lower . (Contac trepor tcontinue d o n secon d page ) INFORMATIO N I S ACCURAT E \^K> 1 Srearn ^o\c- I n Ctlr W t l.^l W * FfUc*hor\Z

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»Aec» T f^A r aff-rovaX . \P. 3 04/09/9 8 TH

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Coul d yo u pleas e verif

y tha tal l th e product s produce d b y you r facilit y usin g centrifuga l castin g ar e product s tha tar e use d fo r corrosion-resistan tapplications ? ^.4 . .fr\{ Mr . Procto r explaine d tha tth e averag e weighte d HA P conten to f Rave n Industries ' resin s wa s calculate d t o b e 4 9 percen tbase d o n infonnatio n tha tMr , Doede n submitte d t o PE S i n Novembe r 1996 . Ms . Proctor adde d tha tthi s average weighte d HA P conten twa s calculate d base d o n th e entire resi n us e atth e plan tincludin g th e resi n us e for filamen twinding , cho p spra y lay-up , an d centrifuga l casting . Ms . Procto r asked i f distributio n o f

resi n usag e i s simila r fo r al l o f thei r processe s o r i f

on e proces s use s highe r resi n HA P content s tha n others . Mr. Doede n replie d tha tth e averag e weighte d resi n HA P conten to f 4 9 percentwa s representative o f al l thei r processes .
INFORMATIO N I S ACCURAT E 

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## RAVE N A 945 2 llrE INOUSTRIE S

FA X NUMBE

R605/335-026 8 CORPORAT

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