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# OAR Box 1500 Prepped by Ollie Stewart



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Number: 

# 47 ) ll-C-7 3 Docket Number: 

# A-94-5 2

Printed 8/5/2008 1:51:28 PM

Sheet 47 of 343P. 2 

### A-94-5 2 $ -t% \ UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y | ^ff2. i RESEARC H TRIANGL E PARK , N C 2771 1 

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OFFIC E O F CfT Q O n lOO ? A, R QUAl -IT Y PLANNIN G O C O U iyy /

ANOSTANOARD S Mr . Bo b Lacovara , Technica

l Director Composite s Fabricator s Associatio n 3 9 BCingerma

n Roa d Telford , Pennsylvani a1896 9 Dea r Bob : Pe r ou r conversatio n o n Septembe r 23 , 1997 , ther e ar

e severa l item s tha t ar e neede d fo

r th e Environmenta

l Protectio n Agency (EPA ) t o better evaluate th e Composite s Fabricator s Associatio n (CFA ) proposa l fo r developin g existin g sourc e maximu machievabl e contro l technolog y (MACT ) floor s fo r ope n molding . Th e tw o immediat e need s I identifie d an

d w e discusse d ove

r th e phon e ar

e (1 ) developmen

t o f ametho d fo

r determinin g the effectivenes s o f vapo r suppresse d resin s o

n acase-specifi c basis , and (2 ) emission s datacomparing flow coater s an d pressur e fe d roller s t o spra y applicatio n o n th e sam e resin s and characteristic s studie d i n th e Phas e I CF

A testing . Thes e immediat e need s are briefl y summarize d below . A tes t metho d i s needed t

o determin e th e effectivenes s o f vapo r suppresse d resin s t o ai d facilitie s tha

t choos e t o us e suppressant s t o comply wit h th e MAC

T standards . Whil e dat aar

e availabl e o n som

e resin-suppressan

t mixes , ther

e i s n o present

metho d o f determinin g th e effectivenes s o f

aparticula

r suppressan

t whe n use d wit

h aparticula

r resi n mixture . Th e availabl e dat aindicate s tha

t suppressant s hav e differen

t effectivenes s whe

n use d wit h filled and unfille d resins , an d there ar e potentially othe

r suppressant/resi n characteristic s tha t could affec

t suppressan

t effectivenes s on acase-specifi c basis . A laborator y typ e tes t metho d woul d b e abl e t o indicat e th e effectivenes s o f

aparticula

r suppressant

o n aparticula

r resin mixture , whic h woul d b e essentia

l fo r utilizin g th e approac h propose d b y th e CFA . Once th e laborator y metho d i s developed , we ma

y the n loo k a t emissio n profile s t

o determin e how the tes t

metho d result s coul d be applie d t

o aparticula

r operatio n t

o predic t th e effectivenes s o

f the suppressan

t o n a particula r operation . A s yo

u mentione d o n th e phone , th e EP A would b e ver

y intereste d in participatin g in th e variou s developmen t stage s ofth e tes t

method . Th e secon d need i s additiona

l dat at o develo p amor

e accurat e contro l facto

r fo r non spra y resin application . I

n th e presen t CF A model , th e emissio n reductio n associate d wit h non spra y resin applicatio n i s constan t an d no t afunctio n o f

HA P content . Fro

mreview o f

the tes t datafro mthe Nationa

l Marin e Manufacturer s Associatio n an d fro mlogica l considerations , i t would appea

r tha t th e emissio n reductio n woul d depen d o n the styrene conten t

Recycled/Recyclabl e • Printe d wit h Vegetabl e Oi l Base d Ink s o n 100 % Hecycle d Pape r(40 % Postconsumer ) IP. 3

ofth e resin . B y lookin g a

t the emissio n reductio n fo

r differen t gel time s an

d thicknesses , w e woul d b e abl e t o determin e ho w thes e variable s als o affec t th e emissio n reductio n and se e ho w an y potenti d variabilit

y in emissio n reductio n coul d b e take n int o accoun t in th e model . I appreciat e ou r conversatio n o n thes e informatio n need s and you r willingnes s t o provid e these . I believ e th e dat agained fromyou r effort s wil l hel p u s wor

k togethe r t o craf t a n approac h tha t wil l mee t bot h th e EPA' s an

d industry' s goals . Pleas e not e tha t the EP A ma y hav e additiona l question s and reques t

additiona l dat aa s w e furthe

r analyz e the approach . I hav e requeste d thes e tw o immediat e need s a t th e present

tim e i n orde

r t o expedit e thei r development and speed ou

r evaluatio n and consideratio n ofth e approac h fo r us e in the reinforce d plastic s MACT standard . Sincerely ,



# ^'kcLU*u^ Madelein e Stru

m Environmenta

l Enginee r Coating s and Consume

r Product s Grou

p cc : Mr . Stev e McN«ally, Composit e Fabricator s Associatio n



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