p. 1



# OAR Box 1384 Prepped by Charmelle Mathews



### Document

Number: 

# 87 ) ll-E-4 7 Docket Number: 

# A-94-5 2

Printed 7/2/2008 8:42:06

AM Sheet 87 of 264P. 2

C_ J 

### A-94-5 2

MEMORANDU M
TO : Madelein e Strum

U.S . EPA/ESD/CCP G FROM : Greg LaFla m an d Melani e Procto r

Pacifi c Environmenta l Services , Inc . (PES ) DATE : Septembe r 24 , 199 6

b:\cbidis k ..;:%'£»!* :•>&$';?£*•. ;.';- .. •

^V;,

. EP A AI R DOCKE T

SUBJECT : Summar

y o f Augus t19 , 199 6 Meetin g Betwee n EP A an d Representative s o f th e Kemlit e Compan y LOCATION : EPA/Mutua l Building , Durham , NC , 11t h floo r conferenc e room , 9:0 0 a m -12:3 0 p m ATTENDEES :

Mr . Gre g LaFla m Mr . Pau l Margheri o Ms . Melani e Procto r Mr . RobertSmit h Ms . Madelein e Stru

m PE S Kemlit e Co. , Inc . PE S Kemlite Co. , Inc . EPA/ES D (919 ) 941-033 3

(815 ) 467-865 6 (919 ) 941-033 3 (815 ) 467-860 0 (919 ) 541-238 3 PURPOS E Th e meetin g wa s requeste d b y th e Kemlit e Company i n orde r t o gai n infonnatio n o n th e directio n o f

EPA' s rulemakin g effor tfo r th e continuou s laminatio n subcategory , an d t o giv e th e compan

y a n opportunity t o describ e th e processes , contro l measures , an d emissions a tth e company' s tw o manufacturing facilities . Attachmen t1 i s a lis to f discussio n topic s distribute d b y Kemlit e a tth e meeting . DISCUSSIO N Mr . Smim state d tha

tKemlit e i s no ta membe r o f th e Societ y o f

th e Plastic s Industr y (SPI) , bu

tha s bee n i n touc h wit

h SPI . Th e company' s tw o manufacturin g facilities , a

tJoliet , E L an d Jonesboro , AR , ar e a n operatin g divisio n o f Kemlit e (whic h is ; owne d b y Crane) . Th e correc tnam e fo r th e pane l divisio n i s Kemlit e Company , Inc. ; th e Jonesbor o plantwa s formerl y owne d b y B P Chemicals . Th e compan y (alon g wit h Sequentia ) i s on e o f

th e tw o larges tpane

l makers , an

d doe s no tconside r itsel f a smal l business . The y legall y ar e a stand-alon e business , with abou t37 5 employee s (27 0 a t Joliet , 10 5 a tJonesboro) . Cran e keep s th e earnings figure s and , sinc e Kemlit e Compan y i s par to f a division , no separate dat a ar e availabl e fo r th e compan y separately .P. 3

Madelein e Stru m Septembe r 24 , 199 6 Pag e 2 I n discussin g th e confidentialit y o f th e compan

y data , th e compan

y requeste dtha

t th e discussion s an

d portion s of

th e provide dprinte dmateria l b e treate da s confidential busines s informatio n (CBI)

. Ms
. Strumdescribe d th e functio n o f th e Emissio n Standard s Divisio n i n developin g regulations i n respons e t o th e Clea n Ai r Act

. Sh e explaine dtha

t th e draf t rul e woul d b e subjec t t o intensiv e review , bot

h withi n an doutsid e o f

EPA , propose dfo r

publi c comment i n ahearin g an

d throug h writte n comments , andpromulgate da s afina l rul e followin g consideratio n o

f comments
. Outreac h effort s providin g assistanc e t o affecte dsource s ma y b e availabl e followin g promulgation

. A cop y o f EPA' s curren t

dat abas e fo

r continuou s laminatio n facilitie s wa s provide d t o Kemlite

. The y expresse dsurpris e tha

t th e Brad y Compan y an dHaysit e were include d o n th e list , and wondere dwh y Glastee l wa s missin g (i t

wa s surmise dthat

the y ar e possibl y to o smal l t o b e amajo r source)

. Ms
. Procto r

explaine dtha

t EPA' s emission s calculation s were base d o n th e midpoint of th e emissio n facto

r rang e i n AP-4 2 (5. 5 percen t of availabl e monomer)

. Kemlit e state dthat

they d o no t

us e th e AP-4 2 factor , bu t us e thei r ow n stac k tes t datafo r emission s reportin g andpermitting

. Th e compan

y distribute d severa

l sheets : 1 ) Kemlit

e datasheet , 2 ) schemati c showin g th e proces s a

t Joliet , 3 ) schemati c of

Jolie t compute r system , 4 ) spreadshee t showin g emission s dat afor on e wee k o f productio n a

t Joliet , an d5 ) spreadshee t

showin g monomer los s calculation s for

Kemlite/Jonesboro , Kemlite/Joliet , andLASC O Pane l Product s i n Kentucky

. (Ms

. Strumhadprovide dt o Kemlit e emissio n estimate s fo r LASC O base d o n amas s balance. ) Th e compan y retrieve dandkep t

al l copie s o f

thei r computer syste mschemati c afte

r showin g anddescribin g i t to EP A andPES

. Th e remaining fou

r sheet s are include da s Attachment 2

. Jolie t Productio n Proces s Th e Joliet , I L facilit

y produce s laminate dpanel product s o n thre e continuou s lines , designate d LP-3 , LP-6 , and LP-7
. Mi x roo m1 serve s line s LP- 3 andLP-6 , whil e mi x roo m2 serve s lin e LP-7
. Th e resi n mixtur e i s mad e i n batche s anddelivere dt o th e productio n line s usin g acompute r controlle dprocess . Ingredien t weigh t records ar e accurate t o withi n 1 percent
. A s depicte d o n th e second pag e of Attachmen

t 2 , th e proces s i s no t

astraight-lin e proces s like other

continuou s laminatio n processes . Th e resi n mixtur e i s dispense dont o th e carrie r filmand the n turn s 180 ° before enterin g m e curin g oven . Thus , th e filmwhic h start s ou t a t th e botto mof

th e mixture become s th e to p filmof th e panel

. A botto mfil m ma y als o b e added ; however , o n tw o of th e productio n line s abotto mfilmi s no t needed

. 

# 2P. 4

Madelein e Stru m Septembe r 24 , 199 6 Pag e 3 Instead , astainles s steel belt , 11 8 inche s wide , i s use db y itsel f to conve y th e laminate throug h th e oven . Th e resi n mixture i s dispense da t atemperatur

e o f 8 5 t o 90°F

. Sinc e apromoted , rathe r than aheat-activated , catalys t i s used , th e resi n begin s t o ge l without th e additio n o f heat

. Thus , arelativel y short , non-heate dwet-out tabl e i s used

. Th e proces s ha s a n expose d are ao f

we t resi n o f approximately 2 4 squar

e fee t ( 8 ft. wide x 3 ft. long)

. Afte r th e 3 feet , choppe d fiber s for maver y thic k barrie r which completely cover s th e expose d resin

. I n orde r

t o promote goo d wettin g of th e fiber s by acooler

resi n mixture , nylo n filamen t simila r t o fishin g lin e i s use dt o hol dth e mixture t o th e squeez e rolls

. Thi s compresse s th e laminate and ensure s goo dfibe r wet-out
. Th e distanc e fromth e docto r blad e t o th e squeez e roll s i s 1 0 t o 1 2 feet , an dth e averag e produc t widt h i s abou t 9 8 inches

. A minimal ai r

flow i s maintaine dove

r th e laminatio n table , andstyren e concentra
tion s d o no t

excee d th e occupationa

l exposur e limi t o f 5 0 ppm . A ventilatio n hoo di s installe d abou t

4 feet over th e table , an dha s alo w inle t velocity

. Emission s Calculation s Th e compan

y ha s develope dametho dfor calculatin g b y compute

r it s emissio n rat e i n lb/hr , base d o n th e continuou s measurement s take n o f th e material s fe

dint o th e process , theoretica l evaporatio n rat e data , andstac k tes t data

. Th e thirdpag e of

Attachment

2 show s th e result s o f

thes e calculation s fo

r th e wee k o f Augus t 11 , 1996

. kemlit e empha

size d that , whil e thi s calculatio n of a n " E factor " i s basedo n theoretica l consideration s arisin g fromth e Idea l Ga s Law , th e result s hav e been confirme db y a"stac k test" a t th e facility

. Thi s tes t

wa s performe di n 199 1 usin g amodifiedEP A Metho d1 8 (sampl e bag s analyze d a

t ala b usin g GC and mas s spe c methods)

. Kemlit e als o pointe dou t

that fugitiv e emission s ar e accounte d for i n th e emission s calculations

. Ms
. Stru msuggeste dth e possibilit y o f calculatin g an E factor

fo r each facilit

y i n th e continuou s laminatio n dat a base , usin g th e Kemlite procedure combine dwit h emissio n testin g result s fromeac h facility

. Sh

e requeste d informatio n fromKemlite' s tes t report tha t woulddescrib e th e tes t metho d and th e calculatio n o f th e E factor

. Kemlit e describe d th e applicabl e Illinoi s Stat e regulatio n i n effect

for th e Jolie t facility

. A cap o f

2 3 lb/h r applie s t o al l thre e productio n lines , o r 7.6 7 lb/h r

o n aper-lin e basis

. A s continuou s reading s are bein g mad e (one recor

dpe r minute) , th e compute r syste mcreate s acalculatio n o f lb/h r emission s fo r

eac h 15-rninut

e period

. A n alarm sound s at avalu e o f

7 lb/hr , and amore urgent alar msound s at

7. 5 lb/hr

. Adjustment s ar e made t o th e proces s t o ensure tha t th e calculate demissio n rat e fall s belo w 7 lb/hr

. 

# 3P. 5

Madelein e Stru m September

24 , 199 6 Pag e 4 Th e participant s reviewe d th e emissio n los s compariso n prepare db y Kemlite fo r it s tw o facilitie s an d fo

r LASC O Pane l Product s (th e las t pag e o f Attachment

2)

. LASC O ha d estimate d it s proces s los s percentag e b y performin g amas s balanc e o n it s proces s (ac

countin g fo r

th e weights of

al l liquid s an dsolid s enterin g andleavin g th e process)

. Kemlite/Jonesboro , wit

h atota l enclosure andaregenerativ e thermal oxidizer (RTO ) i n use , ha d calculate d losse s o f 0.1 1 and0.2 0 percen t

(Lin e 5 wit

h it s higher

emission s use s ge l coa t an d aheate d process)

. Kemlite/Jolie t showedalos s (base do n th e E facto r calculation ) o f

0.3 3 percent

o f th e availabl e monomer . Thi s calculatio n accounte dfor mixin g operation s an

d th e pane l lin e (but

no t resi n storag e tank

losses , whic h ar e small)

. Thi s lo w los s leve l fo

r a n operatio n without

acontro l devic e wa s attribute dt o th e shor t wet-ou t an d unheate d resi n use d i n Joliet' s process . Finally , th e LASC O mas s balanc e showe d alos s o f

1.5 9 percent

for thei r narro w lin e andacalculate dlos s o f 2.7 2 percen t fo r thei r wid e line

. Othe r Issue s Th e participant s discusse d th e glas s enclosure s use dover th e we t area s o f th e pane l makin g operatio n at

Sequenti ai n Gran dJunction , MO

. Kemlit e expresse dskepticis mtha t th e enclosure s coul d provide significan t emissio n reduction , du e t o th e nee dt o ope n the m frequently t o correc t

glas s fiber

defects , etc
. They als o hadconcern s abou t th e safet y o f suc h enclosures , i n tha

t styren e concentration s migh t approac h th e LEL , o r

unsaf e occupational exposure s coul d occur durin g production

. Kemlite sai d that , whil e only aceton e i s use dfo r cleanin g a

t Jonesboro , th e Jolie t facilit y use s methylen e chloride

. Ms
. Stru maske dabout th e sourc e o f

th e n-buty l acrylate whic h th e compan

y ha d liste d i n it s respons e t o EPA' s screenin g survey . They responde d that thi s i s amonome

r used i n ge l coats , bu t

i t wa s no t clea r whether thi s compoun d i s considere d aHA P in the Clea n Ai r Act

. ( A subsequen

t check of th e CAA lis t

b y PE S indicate d tha

t n-buty l acrylat

e i s no t o n th e list. ) Ms
. Stru mdiscussed th e element s of EPA' s tentativ e definitio n fo r continuou s lamination

. Ke

y element s o f

th e definitio n included : 1 ) acontinuou s process , 2 ) a n in-lin e conveyor , 3 ) typicall y cure d i n aoven , and4 ) usually include s ato p andbotto mfil m durin g curing

. Kemlit

e provide d som

e comment s o n certai n detail s o f th e definition , includin g th e nee d fo

r carrier film s i n al l pane l processes . Sinc e Kemlite use s astee l bel t o n som e of it s processe s t o cur e th e product , Mr
. Margheri o suggeste dth e us e o f th e ter m "imperviou s surface " instea d o f "film " i n th e definition

. Ms
. Stru msai dtha t th e definitio n woul d b e reviewe d an

d Kemlite' s comment s considered

. Ms
. Stru mreviewed anumber o f possibl e format s for

th e continuou s laminatio n standard

. Thes e included performanc e standard s (pound s o f emission s pe r

poun do f monomer , resin , o r

product ) and adesign/equipment

standar d(enclos e proces s an droute 

### UP. 6

Madelein e Strum Septembe r 24 , 199 6 Pag e 5 capture d emission s to a 9 5 percentefficien tcontro l device) . O n th e basi s o f th e lo w emissio n rat

e (0.3 3 percento f

availabl e monomer ) calculate d fo r Kemlite' s Jolie tfacility , i tappeare d tha

tthi s facilit

y migh tmov e int o th e thir d ranking spo ti n th e MAC T floo r table , jus tbelo w th e tw o facilitie s usin g incinerators . Thi s woul d indicate a preliminary MAC T floo r fo r existin g source s o f 0.3 3 percen to f

availabl e monomer . Mr . Smith stresse d thatJoliet' s proces s wa s refine d ove r severa l years , an d i twoul d b e ver y difficul t fo r existin g source s t o conver tto tha ttechnology . ACTIO N ITEM S Th e meetin g participant

s agreed t o tak e th e followin g actions : Part y Actio n Agree d t o 1 . EPA/PE S Confir m whethe r th e presenc e o f Brad y an d Ha y site , an d th e absence o f

Glasteel , i n th e subcategor y ar e appropriat

e Revis e definition s o f

continuou s laminatio n and continuou s castin g pe r discussio n 2 . Kemlit e Chec k feasibility o f

doin g a mas s balanc e a tJolie t Provid e t o th e EP A pertinentinformatio n from 199 1 tes t report. (Thi s informatio n has bee n received. )



# 5P. 7

~ Headquarter

s P.O

. Bo x 242 9 Jcfet

. ffinois 6043 4 Tel 815-467-860 0 

### Kemlit e Company , Inc . 800-435-00& 0 Fa x 815-467-866 6 

# CRAN E 

# Kemlite

.

KEMLIT E /

USEP A Visi to n 8/19/9 6

1 . Discus s confidentialit y o f information . Al l printe d material an d discussio n o f

Kemlit e data mus tb e hel d i n confidence .
2 . Informatio n o n th e EP A MAC T effort .

• Whati s th e group' s identification ? Ho w doe s i tfi tint o th e USEP A organization ?

• Whati s th e group' s charter ?

• Whati s th e tim e table ? 3 . Whatfacilitie s ar e groupe d into th e subcategor y i n whic h Kemlit e ha s bee n placed ? Wha tdefinitio n wa s used ?
4 . Discussio n o f

Kemlite' s positio n base d o n attache d outline .
5 . Whati s th e curren tthinkin g o n MAC T regulation s fo r th e pane l industry ?

Manufactuin g F.TCiHir-

o r

!

- i M I V'II H ti l < '.'iii

. .•

- • : Jo6et

. Illinoi s ^ Englan d Jonesboro

. Akansa s Singapor eP. 8 Attachment

2 .
• f I • • Headquarter s 

# CRAN E K0 m |t ©

__£*£

£

• I W l • IMIA_S « Te l 815-467-860 0 Kemlit e Company , Inc . so o 43 5 oo& o r " Fa x 815-467-866 6

Kemlit e Dat a Outpu t i n th e rang e o f millio n squar e fee t pe r year ,

millio n fro mJolie t millio n fro m

Jonesbor o Resi n consumptio n i s i n th e rang e o f 3 5 millio n pound s pe r year ,

itiillio n fro m Jolie t millio n fro mJonesbor o Monome r consumptio n Abov e resin s contai n 3 0 - 40 % monome r a s purchase d Mino r amount s o f monome r ar e adde d t o th e resi n durin g th e processing
. Kemlit e Jolie t proces s

Schemati c showin g basi c similarities/difference s fro mth e res t o f th e pane l lines
. Emissio n Dat a

Schemati c showin g th e compute r syste m tha t support s conformanc e t o th e IEPAOperatin g Permit
. Sprea d shee t showin g on e wee k o f productio n o f volum e grade s includin g th e highes t VO C emittin g grad e (FXI )
. Dat a show s onl yresi n mi x and monome r data
. Nothin g proprietar ycoul d b e derive d fro mth e data
. Sprea d shee t showin g monome r los s calculation s fo r Jonesboro , Joiet , and Lasco . Jolie t IEP APermi t Basi c restriction s are : 1
. Ca p o n VO C emission s pe r hou r (7.6 7 pounds/hr )
. 2
. Ca p o n VO C conten t i n purchase d resin s (43%)
. 3
. Optio n o n conformin g t o on e o f th e following : A . Ca p o n % VO C i n resi n mi x deliver d t o th e pane l line
. B . Ca p o n emission s (6 0 grams/squar e mete r o f expose d resin)
. Jolie t Titl e V

CAAP P Applicatio n Jonesbor o i s no t permitte d b yth e Arkansa s EPA . Th e facilit yemit s unde r 1 0 TP Y o f VOC . Abatemen t achieve d b ya n oxidize r havin g a 95 % destructio n efficiency
. :

: " .^"unr g Fsciiitie ^

".-••••;: • • •;;-• • Jdiet , Illinoi s Englan dRESI N PROMOTE R PIGMEN T CATALYST 

## KEMLIT E CONTINUOU

S PROCES S POLYESTE

R/ GLAS S FIBE

RPANEL S JOLIE T FACILIT

Y promoted

OdttLluSt

^^T5U 5



## o A

BOHO M FIL M UNWIN D 

## ±

fcA>\ Shorte r+^ a 

### ^

o>fta, rImc s

SQUEEZ E ROLL S 

### Coi 1 

### ! ^ £>y<_-\

* rt_*el ^u__J_

- -Wr\a«r>an a

u.r<_
_ T~h_

. ^0 ° -+_cWoc y vjjoi s ou.-

V -th<_

_<nk*&

CU T T O LENGT H TRI M T O WIOT H

CURE D PANE L

BOTTO M FIL M WIN D U P

.•t-VrWli C 

### pP.1 0

Emission s Dat

a fro m Majo r Produc

t Lin e Productio n - Wee k o f 8/11/9 6 Ru n tim e 136 12 8 11 9 30 8 2 3 6 3 182 29 7 28 2 3 8 8 9 42 4 5 5 48 0 48 0 7 6 40 3 31 2 167 17 2 144 163 48 0 19 1 15 9 11 7 1 1 170 29 8 6 3 41 6 11 6 5 4 47 9 47 9 47 9 40 1 19 4 12 8 17 3 16 1 1 7 12 1 3 8 44 1 47 9 47 9 47 9 47 9 Mi x Use d Err 656 2 587 2 384 4 850 6 92 2 259 4 844 4 797 8 754 7 245 6 520 9 2486 6 176 9 1584 7 1539 4 226 2 1478 4 1199 4 769 1 816 6 687 8 764 4 1945 3 1249 7 1076 6 785 6 74 1 1161 2 880 3 205 3 1679 1 433 7 211 6 1940 0 1968 1 2002 8 1682 2 1309 1 827 5 1090 9 10347 108 1 437 8 136 6 19575 2134 7 2172 5 2113 7 2093 4 issio n Lbs , l ^ 15.2 6 13.6 2 8.9 6 20.5 4 2.1 4 6.0 1 19.0 8 18.5 0 17.4 5 1.6 6 3.5 6 17.1 6 2.0 3 17.0 2 , 16.3 7 2.4 1 15.7 6 12.7 9 8.1 7 8.6 7 7.3 0 8.1 3 20.7 4 7.2 5 6.3 1 4.6 0 0.4 4 6.9 4 7.0 5 1.6 5 13.4 8 3.4 6 2.4 0 22.1 1 22.4 1 22.7 3 19.0 9 7.3 2 4.8 8 6.5 9 6.0 4 0.6 1 3.2 2 1.0 1 14.4 1 15.9 1 15.9 1 15.2 0 15.2 4 do

n % Mi x 21.89 % 21.89 % 21.89 % 21.89 % 21.89 % 21.89 % 21.89 % 21.89 % 21.89 % 21.93 % 21.93 % 21.93 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 18.98 % 18.98 % 18.98 % 18.98 % 18.98 % 31.39 % 31.39 % 31.39 % 31.39 % 40.83 % 40.83 % 40.83 % 40.83 % 40.83 % 18.98 % 18.98 % 18.98 % 18.98 % 18.98 % 31.39 % 31.39 % 31.39 % 31.39 % 31.39 % 31.39 % 31.39 % Avai l Mon .

1436.4 2 1285.3 8 841.4 5 1861.9 6 201.8 3 567.8 3 1848.3 9 1746.3 8 1652.0 4 538.6 0 1142.3 3 5453.1 1 722.2 8 6470.3 3 6285.3 7 923.5 7 ! 6036.3 1 4897.1 5 31402 4 3334.1 8 2808.2 9 3121.0 5 7942.6 6 2371.9 3 2043.3 9 1491.0 7 140.6 4 2203.9 6 2763.2 6 644.4 4 5270.6 9 1361.3 8 863.9 6 7921.0 2 8035.7 5 8177.4 3 6868.4 2 2484.6 7 1570.6 0 2070.5 3

. 1963.8 6 205.1 7 1374.2 5 428.7 9 6144.5 9 6700.8 2 6819.4 8 6634.9 0 6571.1 8 % Los

s 1.06% 1.06 % 1.06% 1.10% 1.06% 1.06 % 1.03 % 1.06% 1.06 % 0.31 % 0.31 % 0.31 % 0.28 % 0.26 % 0.26 % 0.26 % 0.26 % 0.26 % 0.26 % 026 % 0.26 % 0.26 % 0.26 % 0.31 % 0.31 % 0.31 % 0.31 % 0.31 % 0.26 % 0.26 % 0.26 % 0.25 % 0.28 % 0.28 % 0.28 % 0.28 % 0.28 % 0.29 % 0.31 % 0.32 % 0.31 % 0.30 % 0.23 % 0.24 % 0.23 % 0.24 % 0.23 % 0.23 % 0.23 % Los

s Rat e Lbs/h r 6.7 3 6.3 8 4.5 2 4.0 0 5.5 8 5.7 2 6.2 9 3.7 4 3.7 1 2.6 2 2.4 0 2.4 3 2.2 1 2.1 3 2.0 5 1.90 2.3 5 2.4 6 2.9 4 3.0 2 3.0 4 2.9 9 2.5 9 22 8 2.3 8 2.3 6 2.4 0 2.4 5 1.4 2 1.5 7 1.9 4 1.7 9 2.6 7 2.7 7 2.8 1 2.8 5 2.8 6 2.2 6 2.2 9 22 9 22 5 2.1 5 1.60 1.5 9 1.96 1.99 1.9 9 1.90 1.9 1 

# 1P.1 1

Emissio n Los s o f Avaiiabi e Monome r Proces s Los s % (1 )

Kemlite/Jonesboro : (emission tes t

runs ) 

### Lin e 4 Lin e 5

Kemlite/Joliet199 5 (yea r 199 5 totals )



### Lasco: mas s balanac e tes t

ru r 

### Tota l Mi x lbs . 84 0 334 4

4457323 0 Tota

l Monomer ; Emission s lbs

. , lbs

. 260. 4 1203.8 4

1310453 0

437. 1 5.6 8

48.6 5

4351 0

< 

### 11. 9 % Los s

2.18 % 4.04 %

•


### 0.33 %

2.72 % AbatedLos s % (2 ) !
! I 

### 0.11 % 0.20 %

N A

N A

Notes : (i ) Proces

s Los s % = Emission s fibs. ) x10 0 (Tota l lbs . availabl e monome r delivere d to th e process ) (2 ) Jonesbor o facilit

y RT O destructio n efficiency i s 95% .



# lo