# OAR Box 1490 Prepped by Charmelle Mathews



## Document

Number: 

# 57 ) IV-C-30 Docket Number: 

# A-94-5 2

Printed 8/4/200811:51:47

AM _

Sheet 57 of 273 p. 1P. 2

Keit h Barnet t $Jl i 05/17/200 2 05:1 8 P M A-94-5 2 IV-C-3 0 To : Joh n Schweitze r<jschwtzr@gte.net > cc : Penny Lassiter/RTP/USEPA/US@EPA Subject : Re : Ma

y 2 3 works h Dea rJohn : I hav e reviewe d you rlis t an d adde d comment s i n Bol d tex t s o yo u ca n se e wher e th e issu e i s alread y resolved , an d wher e w e nee d t o discus s issues . CF A Issu e List-5-17-02. d Keit h W . Barnet t US/EP A OAQPS , ESD/MIC G C504-0 5 Researc h Triangl e Park , N C 2771 1 919-541-560 5 barnett.keith@epa.go vRP/ C NESHA P - Ope n Issue s CF A Ma y 23 , 200 2

John , I hav e adde d m y comment s i n Bol d text . SJT t S | Issu e an d CF A positio n Analysi s Statu s II- l Remov e above-the-floo r 95 % captur

e and contro l for large r existin g sources . j 95 % C& C i s no t technicall y feasibl e o r

affordable . EP

A ha s decide d no t

t o requir e any existin g source s t o instal l C& C (excep t centrifuga

l castin g an d continuou s lamination) . ! Man y likely ne w plant s ar

e no t simila r t o th e floor I I - 2 I Remov e 95 % captur e an d contro l fo

r ne w sources , i settin g sources , and wil l no t b e abl e to achieve or ! affor d 95 % C&C . I don' t se e thi s requiremen t

changin g I Th e floor

fo r existin g and ne

w pultrusio n I Th e typica l larg e "custom " pultrusio n operation s III- A ; operation s shoul d b e 60 % reductio n (compared to I can achiev e o n averag e onl y 60 % control , du e t o I "n o control") . I limit s i n th e availabl e contro l technologies . Se e abov e

TT T _Rj Pre-for

minjectio n should b e acomplianc e optio n I Pre-for minjectio n i s th e mos t

effective availabl e I for pultrusio n wit

h 90 % control . i contro l fo r man y products . W e definitel y wan t t o includ e pre-for m injection . W e nee d t o discus s th e actua l demonstrate d performance . Also , I don' t kno w i f I ca n substitut e per-for m(assumin g w e agre e th e 9 0 percen t

contro l i s accurate ) i n lie u o f 9 5 percen t control . Thi s ma

y requir e som e OG C input . j Pultrusio n operation s should b e abl e t o compl y II I - C j wit

h th e 60 % reductio n a s a12-mont h rollin g I averag e acros s al l pultrusio n operations . Allow s productio n flexibility whil e stil l achievin g th e require d emissio n reductions . Sinc e w e allo w averagin g fo r continuou s lamination , an d ope n molding , I don' t se e an y reaso n w e canno t

allo w averagin g fo r pultrusion . III- D Wet

are aenclosure s shoul d b e permitte d fo r al l pultrusio n sources , an

d th e requirement s fo

r thes e enclosure s shoul d b e modifie d i n certai n way s to allo w practica

l compliance . We t are aenclosure s ar

e th e mos t effective availabl e contro l fo

r man y products . Se e m-A , bu t otherwis e w e ca n discus s ho w t o accomplis h this . III- E IV- A Larg e pultrude d product s shoul d b e exemp t fro m contro l requirements . Ther e ar e n o effective commercially availabl e an d practical control s fo

r larg e pultrude d parts . Th e onl y sourc e i n thi s grou

p usin g C& C need s t

o amen d it s permit

to remov e 100 % captur

e becaus e th e enclosur

e unacceptably limit s production . W e ca n discus s this .

IV-B- 1 Captur

e an d contro l should no t

b e require d fo

r SMC manufacturing (compounding) . W e don' t requir e captur e an d contro l fo r existin g sources . I t

wil l stil l b e require d fo r

ne w sources . Covered doctor

boxe s and folded/sealed edge s shoul d no t b e require d fo

r SM C compounding . Thes e technologie s wer e trie d bu t foun d to b e no t practical . Th

e rul e shoul d requir

e tha t compound b e wrappe d or

place d i n close d container s fo r storag e an d transportation . W e hav e droppe d th e requiremen t fo r foldin g an d sealin g edges , an d coverin g th e docto r box . W e wil l requir e th e "resi n transpor t system " t o b e covere d o r

closed .RP/ C NESHA P - Ope n Issue s CF A Ma y 23 , 200 2

Comment s sectio n Issue an d CF A positio n Analysi s ! Statu s IV-B- 2 Th e requiremen t fo r nylo n filmfo

r SM C compound should allo w nylon-containin g film. Most ofth e barrie

r films used ar

e blend s o f nylo n wit h othe r polymers . | W e are changin g th e requirementt o nylo n | containin g film . W

e stil l ma y need t o defin e i wha tthatmeans . V - A V - B Cover s instea

d o f add-o n control s should b e require d fo

r large r mixing operations . Use."Mixingand.BM C nmtfacturing. " Covers achiev e th e sam e emissio n reductio n a s C& C fo r mixers , a t muc h lowe r cost . I Capture an d contro l only required fo r ne w j source s an

d thati s th e floor . j W e wil l chang e thi s "BMC manufacturing/mixing " i s confusing . Opening s ar

e needed t o penni t entr y o f mixer shafts an d instrumentation , an d t o allo w ventin g durin g filling o

r emptying , an d activ e ventin g i s needed when adding fillers. ! Opening s and vent s shoul d b e allowed i n mixin g V - C j an d storag e vessels . Active ventin g should b e ! allowe d wher

e needed . ; W e are workin g o

n thi s issu e an

d we nee d t o i discus s V - D Styren e an d MM A shoul d b e permitte d fo

r cleanin g i n closed systems . Unwrappe d compressio n molding charge s should b e allowe d fo

r al l mold s i n one cycle ofapress , fo r loadin g charge s int

o ahopper , and to allo w th e us e of slittin g machines . Cured resi n mus t b e removed fro

mmixin g an d storag e tank s t

o prevent contamination . I W e should b e abl e t o accommodat e thi s reques t V - E Th e hoppe r ca n b e closed afte

r loading , an d th e sli t materia l ca n b e place d i n acontaine

r o r otherwis e covered . W e should b e abl e t o chang e thi s I "Compressio n molding " shoul d include th e V - F ; additio n o

f past e a t th e mold , an

d th e us e o f in

- | mol d coating . Thes e operation s ar e ver y commo n at

compressio n moldin g source s and ar

e considere d par

t ofthi s process . I f th e i n mold coatin g i s ge

l coat , then tha tste p woul d b e th e sam e as an

y othe r gel coa t operation . I

f thi s i s som

e othe r typ e o

f material , the n w e need t

o know whatan

d we can tal k abou tho w t o handl e it . V - G V - H Source s shoul d b e abl e to us e emission factor s tha t hav e bee n approved a s par

t o f Titl e Vpermits . Thes e factor s ca n b e mor e accurate , and wil l reduc e th e administrativ e burden o f MACT . Th e us e o f patching , bonding , and repair matenal s * ~ .. . .. . j u . • TM n
, ,,,.,,, . , 6 , • Thes e matenal s ar e widel y used , but

i n small shoul d b e mcluded mth e sourc e categor y i tit

i definition , wit

h no contro l requirements . j I woul d b e i n favo r o f thi s as lon g as th e factor s are adequatel y supported by tes tdata . W e nee d t o discuss . But , a

tleas ti n som e cases , th e bas e materia

l i s th e resi n an

d some typ e o f filler i s added . Therefore , thes e material s woul d already b e covered . Bu tlet' s discus s further . V - I V - J R&

D activitie s shoul d b e exempt fromcontro l requirements . Thi s i s EPA' s usua l practice . W e probably wil l g

o ahead a n exemp tR& D based on th e definitio n i n 112(c)(7) . Butlet' s discuss . Source s shoul d b e allowed to switch complianc e options . Source s ma y occasionall

y nee d to switc h t o averaging , and th e rul e should provide guidanc e on doin g so . Let s discus s ho

w thatguidance need s t o b e worded , an

d wha tUmit s would need t o b e place d on switchin g (i

f any) . V - K V - L Th e UE

F should b e used instea

d ofth e PV . Th e rul e should allo w th e us e o f CFA' s VS E test . The UE F ar e mor e accurate , and thei r

us e wil l reduc e th e administrativ e burden ofth e rule . Withou t atest , source s wil

l no t b e abl e t o take credit fo r us e o f suppressed resi n systems . EP A ha s agree d t o us e th e UEF . CF A i s preparin g th e additiona l tes t dat arequeste d b y EPA .RP/ C NESHA P - Ope n Issue s CF A Ma y 23 , 200 2

Comment s sectio n Issu e an d CF A positio n Analysi s Statu s Let' s discuss . Aiso , w e nee d t o tal k abou

tho w w e insur e tha tth e equipmenti s properl y operated . V - M V - N V-O- l A peiformanc e tes t should b e used t o qualif

y "non

- i Thi s will allo w th e developmen t o f new atomized " equipment . I equipment , and wil l increas e clarit y ofth e rule . Source s usin g averagin g shoul d calculat e emission s a s aweighted averag e o f resi n used . i The proposed rul e weigh s eac h mont h equally , I even if widel y differen t amount s o

f resi n are used . I think thi s make s sense . Let' s discuss . "White/off-white " ge

l coat s shoul d b e thos e tha

t contai n 10 % o

r mor e b y weigh t TiO ? . j Increase s clarit y ofth e rule . I thin k thi s wil l b e O K ..N.*?^..^.9..^!'.??l , ?. s ' . Nee d t o discuss . 

## y : 

## o- 2 V-O- 3 48%.HA

P should.be„^ow*^.fo r

CRgelcoat . 48 % HA P shoul d b e allowed fo

r hig h performanc e ge l coat . j Needed fo r adequat e performance . I Needed fo

r adequat e performance . V-O- 4 V-O- 5 V-O- 6 Ther

e shoul d b e n

o HA P limi t fo r fire retardan

t gel coat . 48 % HA P shoul d b e allowed fo

r dea r gel coa t use d fo r culture d marble . I Needed fo r adequat e performance . | Needed fo

r adequat e performance . | Needed fo

r adequat e performance . Nee d t o discuss . Nee d t o discuss . 49 % HA P shoul d b e allowed fo

r pigmente d toolin g ge l coat , and 52 % fo r clear . Nee d t o discuss .
V-O- 7 ! Gel coa

t should b e considere d aresi n whe n applie d j I manually , and manua

l applicatio n o

f smal l j Increase s clarit y an d reduce s administrativ e burde n j amount s o

f gel coa t shoul d b e exemp t

from j of

th e rule . | recordkeepin g requirements . O r w e coul d simpl y trea ta s al l gel coa tas applie d usin g spray wit

h th e sam e floor . I

n any case , wher e a small amoun to f gel coati s manually applied , I hav e n o problem i n tryin g t o includ e i ta s par to

f some othe r operatio n wher e you don' thav e t o separatel y track a smal l amounto

f materia L | Adopt th e industry-suggeste d definitio n fo r "lo w j Increasesclarityo f a^e . : flame/smoke. Thi s i s O K V - Q i 50 % HA

P shoul d b e allowed fo

r low-shrin k resin , j Needed fo

r adequat e performance . I don' thav e a problem wit h this , butI thin k w e nee d t o discus s how bes tt o accommodat e specia l resin s and ga

l coats . V - R Requirement s fo r testin g HA

P conten t should b e th e sam e a s i n th e boa

t MACT . \ Increase s clarit y an d reduce s administrativ e burde n I ofth e rule . I d o notinten d t o pu

ti n a tes trequirement . I d o plan t o pu ti n th e manufacturin g allowanc e thati s i n th e Fiberglas s BoatManufacturin g NESHAP .RP/ C NESHA P - Ope n Issue s CF A Ma y 23 , 200 2

^!TM n t s l Issu e an d CF A positio n sectio n Analysi s Statu s

V - S 48 % HA

P shoul d b e allowe d fo

r C Rfilament winding . Neede d fo r adequat e performance . EP A aske d fo r example s of

product s fo

r whic h th e highe r HA P limi t i s neede d fo

r technica l reasons . T think th e provisio n allowin g th e us e o f one resi n fo r multipl e operation s an d averagin g ma y solve thi s problem fo r mostfacilities . Wher e a custome r specifie d a resin , w e can discus s ho w thatca n a accommodated i n th e rule . Ther

e na y b e concern s fo r OG C o n this . ..?M*..L^..59*..9PJ?.9l¥.'?..*9.^!?..!. l *! Ba ' V - T Remove SIC code s 282 1 an d 3087 . Thes e industrie s ar e no t composite s manufacturers . Applicabilit y o f th e rul e i s no

tbase d on SI C Codes . 3/1 9 | Updat

e th e combine d mechanica

l database . EPA' s ne w combine d filled/unfilled mechanica l apphcatio n databas e contain s inaccurat e information , an d woul

d resul t i n abefore-fille

r HA P limit o f 35% . EP A ha s reporte d that

th e databas e ha s bee n correcte d an d th e floors no w limi t before-fille

r HA P t o 39% . The final floo r ende d u p a t38. 4 percent . 3/26- 1
3/26- 2 Chang e th e definitio n o f "centrifuga

l casting " t o include onl

y thos e operation s wher

e ho t ai r i s blow n int o th e mold s t o cur e th e product . Als o updat e Tabl e 1 . Most centrifuga l castin g operation s us e ambien t cur e or the mold s ar

e close d durin g cure . In thes e cases , the emissio n factors fo r mechanica

l or manua l apphcatio n shoul

d b e used , an d thes e source s shoul d no t

hav e t o install C&C . W e need t o tal k abou

tthis . Chang e "filamen

t winding " to "filamen

t application, " an d include onl y th e apphcatio n o

f resi n usin g aresi n bath . Als o updat e Tabl e 1 . Increase s clarit y ofth e rule . W e need t o tal k abou

tthis . A s a matte r o

f fact , thi s issu e recentl y cam e u p fo r a new facilit y permit . i Chang e th e definitio n o

f "polyme r casting " to 4/ 8 I remove th e referenc e t o "working " th e resin , or i allo w workin g th e resi n afte r mold s ar e closed . : Ifth e edge s o

f SMC compoim

d i s folded o

r sealed , 5/23- 1 | the n i t

shoul d no t

hav e to b e wrappe d or

placed i n ! close d containers . Increase s clarit y ofth e rule . Should no tb e a problem . Foldin g or sealin g edge s i s technically feasibl e i n a fe w cases . W e n o longe r requir e foldin g o r sealin g edges . 5/23- 2

5/23- 3 When roboti c loadin g device s ar e employe d for compressio n moldin g operations , sufficien t charge s ma

y b e ope n (uncovered

) pe r cavit y fo r tw o pres s cycles . One ope n charg e will b e staged i n th e loader , an d th e othe r ope n charg e (pre-stage) read

y to b e place d i n th e loader . I think w e can accommodat e this , bu tw e need t o discuss . A ne w sourc e shoul d b e clearly defined a s one a t a sit e wher e previously there wa s no composit e manufacturin g operations , and al l other operation s shoul d b e considere d existin g sources . Becaus e ofth e lo w capita l investmen

t needed fo r man y composit

e manufacturin

g operations , man

y smal l change s t o existin g source s ma y trigge r ne w sourc e MAC T i f

thi s definition i s no t

clearl y adopted . I thoughtth e rul e wa s prett y clear . Bu

ti f w e need mor e clarit y let' s discus s language .RP/ C NESHA P - Ope n Issue s CF A Ma y 23 , 200 2 

## sStoirt s 

## i issu e an d CF A

## p° siti 

## ° n

> I The final rul e shoul d clearl y stat e that , fo r th e 5/23- 4 I purpose s of

MACT , al l HA

P ar e assumed t o b e j styrene . Analysi s Statu s EPA' s databas e an d floor

calculation s assume d tha

t al l HA P wer e styrene . Let' s discuss , bu t I don' t se e aproble mwit h thi s idea , an d you r

statemen t

i s accurate . j Th e final rul e shoul d provide aprocedur e to revis e 5/23- 5 i Tabl e 1 ofth e rul e s o tha t ne w P2 technologie s ca

n Withou

t aclea r and workabl e procedure , new an d effective emissio n reductio n technique s wil l no t b e Yes , I agree . Let' s discuss . j b e used to mee

t th e MAC T emissio n limits . I developed o r used .