I j Yn l I " p 674 7Campobello Rd vMississauga, Ontario , L5 N 217 , Canad

a M \ t I IvkllhlN C Tel : 905-363404 0 •Tol l Free : 800-758-732

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Decembe r18 , 201 2 c_ _ U.S . Environmenta l Protectio n Agency"Or n Lesli e Cronkhite , (7405M ) ^ 3r n Chemica l Contro l Divisio n _ „ o. < CTrn Offic e o fPollutio n Preventio n an d Toxic s 3 £—— Offic e o fChemica l Safet yan d Pollutio n Preventio n 120 0 Pennsylvani a Ave r Washington , D

C 2046 0 O C 3 120 0 Pennsylvani a Avenue , N.W. o

Dea rMs . Cronkhite , Re . EPADat a Reques t o n MDI , TDI , an d Relate d Compound s Issue d Septembe r19,201 2 a s Clarifie d b

yEmai l Novembe r8,2012 . Furthe rt o th e reques t outline d above , I a m please d t o provid e a packag e o finformatio n coverin g th e variou s product s w e sel l i n th e US . Th e packag e contain s studies , tests , TDS - Technica l Dat a Sheets , MSD S an d evaluation s performe d o n ou rproduct s bythir d partie s independen t i n thei rassessments . Than k yo u fo rgivin g u s th e opportunit yt o submi t thi s packag e fo rreview . Befor e explainin g wha t i s i n th e package , I fee l i t i s importan t t o explai n th e working s o fou r company , ou rproduc t lin e an d ou rapproac h t o th e marke t s o tha t yo u ca n understan d ou r approac h t o produc t stewardship . Icynen e i s a truste d bran d nam e i n spra yfoa m fo rreason s tha t g o wel l beyon d th e product s w e sell . W e d o no t sel l t o distributor s o rwholesalers . W e d o no t sel l t o th e public . W e sel l t o a networ k o flicense d "Dealers"—contractor s wh o us e th e Icynen e bran d nam e t o brin g credibilit y t o thei rbusines s unde ra signe d commitmen t t o bu ylo wdensit yspra yfoa m exclusivel yfro m u s an d increasingl yth e agreemen t i s bein g expande d t o includ e mediu m densit yproduct s a s well . Ou rDealers ar e provide d wit h a three-da yorientatio n t o ou rproducts , SprayFoa m Technology , Healt h an d Safety , Building Scienc e an d Codes , an d Troubleshooting . W e als o provid e two-da y Fiel d Spraye rTraining . W e als o requir e al l sit e personne l tak e th e CP I Chemica l Healt h an d Safet yTrainin g o n lin e befor e the yca n acces s an yo fthes e resource s an d g o on-site . W e provid e on-lin e webinar s an d fiel d trainin g suppor t everytim e w e introduc e ne wproduct s o rne w approval s fo rexistin g products . 

# CONTAIN S N O CB Ip . 2

W e d o thi s s o dealer s ca n represen t tha t ar e par t o fa networ k o fcontractor s wit h product s tha t hav e bee n properl yteste d sold onl yt o individual s wh o understan d ho wt o handl e an d instal l the m properly . W e ar e no t i n th e "DIY " o runlicense d contracto rsale s business . As a recognize d bran d name , w e ar e frequentl ycalle d upo n t o loo k int o complaint s abou t product s tha t cal l themselve s "Icynene " bu t are , i n fact , imposters . Give n th e fac t tha t w e d o no t sel l throug h distribution , w e hav e greate rcontro l i n knowin g wh o thos e imposter s are . Particularly , wit h respec t t o Hig h Pressure Ope n Cel l products , ou rproduct s hav e uniqu e characteristic s tha t allo wu s t o perfor m laborator ytest s t o identif yth e vas t majorit yo f imposters . Ou rproduc t lin e i s focuse d o n Hig h Pressure SprayFoam . As such , ou rproduct s ar e use d i n fixed-volum e proportione rspra ysystems . Core product s include : Hig h Pressure Lo wDensit ySprayFoa m (Ope n Cel l /Wate rBlown ) •Icynen e LD-C-5 0 /

LD-C-5 0 v 2 {Icynen e CLASSI C an d CLASSI C MAX ) •Icynen e LD-R-5 0 (Icynen e RENEWABLE ) Hig h Pressure Mediu m Densit ySpra yFoa m (Close d Cell/Blowin g Agen t Formulation ) •Icynen e MD-C-20 0 Hig h Pressure Mediu m Densit ySpra yFoa m (Wate rBlown ) •Icynen e MD-R-20 0 (Ope n Cell/Wate rBlown ) •Icynen e MD-R-21 0 (Close d Cell/Wate rBlown ) (Thi s produc t i s currentl ybein g pilo t teste d t o b e release d i n 201 3 an d mayreplac e MD-R-200 ) W e sel l othe rspecialt yproduct s tha t complimen t thi s cor e produc t lin e includin g Ignitio n an d Therma l Barrie rpaints , a s wel l as , Vapo rRetarde rPaint s manufacture d byother s bu t becaus e thes e product s d o no t contai n MD I o rTDI , w e hav e no t include d the m i n thi s submission . I als o wante d t o explai n ou rnamin g syste m fo rproduct s so yo u understan d an d ar e no t confuse d bysubtletie s i n th e informatio n I a m providing . Ou rtechnica l namin g syste m i s a s follows : LL-TT-DDD , wher e

•LL i s a tw o lette rshor t for m use d t o describ e th e densit yclas s o fth e foa m (eithe rLD fo r LowDensit yo rM D fo rMediu m Densit yusually ) •T Ti s a on e o rtw o lette rshor t for m use d t o describ e a specia l attribut e (C fo r conventional , R fo rRenewabl e etc. ) •D D i s th e nomina l densit yo fth e produc t (5 0 fbr H l b density,20 0 fo r2 l b density ) So fo rexample , MD-C-20 0 i s a Mediu m Density , Conventiona l Close d Cell , 2 l b densit yfoam . Ou rWate rBlow n Foam s al l us e th e SAM E A-sid e MDI . I t i s onl yth e B-sid e resi n tha t i s different . Ou rBlowin g Agen t Foa m (MD-C-200 ) i s th e onl yproduc t wit h it s ow n uniqu e MDI . Pag e 2 o f6p . 3

So i n ou rarra yo fMSDS sheets , yo u wil l se e man ydifferen t MSD S sheet s fo rB-Sid e Resin s an d relativel yfe wfo rA-Sid e MDI's . Fo rmor e tha n 2 0 year s o fit s 2 6 yea rhistory , ou rcompan ysold an d buil t it s reputatio n o n on e Lo wDensity , Hig h Pressure , Ope n Cell , SprayPolyurethan e Foa m product . Tha t produc t has , ove rth e years, variousl ybee n calle d Icynen e "Gol d Seal" , Icynen e "Classic " an d Icynen e "LD-C 50. " I n term s o fth e wordin g i n variou s reports , yo u ca n substitut e Icynen e LD-C-5 0 fo rGol d Sea l an d th e variou s othe rname s tha t ma yappea ri n th e tex t o folde rreport s i n particular . Jus t recently , Icynen e als o introduce d a ne wproduc t LD-C-5 0 v 2 int o th e marketplace . Tha t produc t contain s almos t insignifican t change s i n formulatio n (les s tha n .6 % b yweight ) t o improv e attribute s suc h a

s shel flif e an d sprayperformance , bu t fo rth e purpose s o fan yevaluatio n o f curing , off-gassin g an d re-occupancytime , i s essentiall yth e sam e produc t a s LD-C-50 . S

o agai n LD-C-5 0 an d LD-C-5 0 v2 ar e synonymous . Naturally , becaus e LD-C-5 0 i s ou rto p sellin g product , an d becaus e i t has bee n aroun d th e longest , ther e ar e mor e reports , compile d ove ra longe rperio d tha n an yothe rproduc t i n ou r portfolio . Som e report s ar e quit e ol d bu t hel p t o demonstrat e performanc e ove rth e years . Produc t developmen t an d improvemen t i s ongoing . Ou rnewes t product , no t ye t release d fo r ful l commercializatio n i n th e US i s MD-R-210 . Whe n i t i s released , i t wil l b e th e onl y100 % Wate r Blown , Close d Cell , Mediu m Densit yfoa m o n th e marke t today . Thoug h i t i s preliminary , an d th e produc t i s no t ye t commercialized , w e wante d t o provid e informatio n (limite d thoug h i t ma ybe ) eve n o n th e revolution s i n ou rproduc t developmen t pipeline , a s well . You rreques t fo rinformatio n aske d fo rman ythings . I t wa s difficul t t o se e whethe rw e shoul d organiz e th e informatio n byproduc t o rb ydat a them e o rb ysom e othe rclassificatio n system . I n th e end , w e chos e a hybri d approac h t o organiz e th e informatio n yo u hav e requested : W e sorte d th e external , thir d part ytes t dat a an d report s b yproduct . The n w e groupe d th e TDS an d MSD S sheet s together , base d o n th e fac t tha t thi s inf o wa s compile d base d o n a combinatio n o f interna l an d externa l testing . An d finally , w e adde d th e healt h an d safet ytestin g i n ou rla b an d plan t sinc e ongoin g monitorin g o fMD I i s par t o fou rexterna l healt h an d safet ymonitorin g bu t no t necessaril ytie d t o onl yon e specifi cproduct . Ou rsubmissio n i s presente d i n a thre e rin g binde r(an d i n sof t cop yo n a memor yke ystick ) wit h tab s (folders ) a

s follows : 1 . LD-C-5 0 Dat a 2 . LD-R-5 0 Dat a 3 . MD-C-20 0 Dat a 4 . MD-R-20 0 Dat a 5 . MD-R-21 0 Dat a 6 . Technica l Dat a Sheet s (Al l Products ) 7 . Materia l Safet yDat a Sheet s (Al l Products ) 8 . I n Plan t Healt h an d SafetyTestin g (Al l Products ) Pag e 3 o f6p . 4

Adetaile d tabl e o fcontent s list s th e report s foun d withi n eac h tab . So wit h referenc e t o you rlette ro fSeptembe r19,2012, 1 wil l attemp t t o poin t yo u toward s th e studie s / dat a tha t provid e th e bes t answer s t o you rquestion s lai d ou t o n Pag e 2 o ftha t letter . 1 . Product Type : Ou rproduct s ar e al l intende d a s whol e buildin g insulation/ai rbarrie rproducts . The yar e applie d b yhig h pressur e spraysystems . 2 . Chemica l compositio n o fth e formulate d products : Th e majo rchemical s i n ourformulation s ar e liste d i n th e MSDS sheet s supplie d i n Ta b 7 (Folde r7) . Thes e document s lis t al l th e hazardou s an d reportabl e compound s i n eac h product . I fth e ful l proprietar ylistin g o fexac t mixture s i s stil l required , EP Aca n contac t Mr . Larr yGenyn , V P Technolog yo fIcynene , t o releas e thi s inf o a s Confidentia l Busines s Information . 3 . Sensitivit yAnalysis : Al l ou rproduct s ar e proportione d o n a 1: 1 basi s an d th e equipmen t use ri s give n n o flexibilit yadjus t mixture s off-ratio . Sligh t off-rati o mixture s ca n occu ri fther e i s a larg e differenc e i n viscosities/pressure s o fA-sid e an d B-sid e chemicals . Processin g instruction s o n ou rTDS sheet s i n Ta b 6 (Folde r6 ) ar e designe d t o minimiz e / avoi d thi s outcome . Installer s ar e taugh t t o recogniz e off-rati o foa m an d remov e i t i fi t occurs . Ther e i s als o a financia l incentiv e fo rinstaller s t o avoi d off-rati o foa m i n tha t productivit ydecrease s i ffoa m i s of fratio . Boar d footag e yiel d o fsprayfoa m ca n var ywit h temperatur e s o w e typicall yd o no t publis h suc h data . W e indicat e th e use rwil l se e a rang e o fyield s usuall ya s follows : LD-C-5 0 / LD-C-5 0 v 2 16,000-20,00 0 boar d fee t LD-R-5 0 15,000-18,00 0 boar d fee t MD-C-20 0 4,000-5,00 0 boar d fee t MD-R-20 0 5,000-6,00 0 boar d fee t MD-R-21 0 4,500-5,50 0 boar d fee t 4 . Curin g Times : Ou rconclusion , base d o n man ydifferen t test s w e an d other s hav e carrie d out , i s tha t th e existenc e o fraw , un-reacte d MD I i n hig h pressur e spra yfoa m i s shor t lived . I n th e lo wdensit yfoam s particularly , ther e i s a n exces s o fwate ri n th e mixture s (mor e tha n 3 time s th e amoun t neede d t o full yreac t al l MDI) . Ou rmonitorin g o fMD I i n ou rplan t durin g spra yactivitie s (se e Ta b 8 (Folde r8) ) an d report s bac k fro m othe rpartie s has foun d tha t MD I i n th e ai ri s full yreacte d withi n 1-2 hours . Surfac e wip e testin g suggest s tha t th e existenc e o fMD I canno t b e foun d i n a s littl e a s 5 minute s afte rspra y(se e SWYPE S testin g o fMD I during/afte rsprayo fLD-C-5 0 i n Ta b 1 (Folde r1 ) an d SWYPE S testin g o fMD I during/afte rspra yo fMD-C-20 0 i n Ta b 3 (Folde r3). ) Pag e 4 o f6p . 5

Ou rhig h pressur e product s d o no t requir e atmospheri cmoistur e t o cure . I n addition , th e Ope n Cel l product s d o littl e t o limi t th e diffusio n o fmoistur e withi n th e structur e o f foam , so i t become s eve n mor e likel ytha t th e MD I wil l cur e rapidly . 5 . Re-occupanc yTime : Severa l o fou rproduct s wer e teste d accordin g t o th e methodolog yuse d i n Canad a outline d i n CAN/UL C S774 . Th e testin g o fLD-C-5 0 (Se e SR C repor t i n Ta b 1 (Folde r1) ) pre-date s thi s standar d an d th e standar d wa s i n fac t develope d base d o n th e testin g o f thi s product . Th e methodolog yidentifie s 5 chemical s tha t ar e off-gasse d b ythi s product . W e hav e als o include d th e assessmen t o fth e dat a b ya Ph. D toxicologis t wh o conclude d tha t base d o n th e emission s a buildin g woul d b e suitabl e fo roccupancywithi n 2 4 hour s an d tha t level s o fth e compound s tha t wer e detecte d becom e undetectabl e withi n 3 0 days . Asimila rstud yfo rLD-R-5 0 (Se e Ta b 2 (Folde r2) ) conclude d tha t building s insulate d wit h tha t produc t woul d b e suitabl e fo rre-occupanc yi n 1 2 hours . W e hav e othe rproduct s teste d an d markete d i n Canad a onl yfo rwhic h w e coul d provid e tes t data , i frequested . I n genera l fo rou rUS products , notwithstandin g th e informatio n above , w e hav e chose n t o follo wth e guidanc e fro m th e America n ChemistryCouncil , Cente rfo rth e Polyurethane s Industryi s tha t building s shoul d no t b e re-occupie d fo r2 4 hours . Ou r MSD S sheet s fo rFINISHE D FOA M product s i n Ta b 7 (Folde r7 ) identif yi n Sectio n 3 , unde rth e subjec t o fEmissions , tha t building s ar e "saf e fo roccupancyafte r2 4 hours" . 6 . Qualitativ e Data : W e hav e onl ycarrie d ou t qualitativ e testin g o n ou rtw o mos t popula rproduct s LD-C-5 0 an d MD-C-200 . Togethe rthes e product s represen t mor e tha n 90 % o fou rfoa m sale s i n th e US . Th e report s ca n be foun d unde rTa b 1 (Folde r1 ) an d Ta b 3 (Folde r3 ) an d ar e entitle d SWYPE S testin g o fLD-C-5 0 an d MD-C-200 . It i s importan t t o note w e teste d bot h uncu t an d cu t foa m an d foun d n o un-reacte d MD I remainin g approximatel y5 minute s afte rspray . Base d o n thi s work , i t doe s no t appea r tha t th e ac t ofscarfin g o rtrimmin g th e foam , eve n a fe wminute s afte rsprayexpose s mor e un-reacte d MDI . 7 . Reactio n Times : Thi s dat a i s bes t summarize d o n ou rTD S Technica l Dat a Sheet s i n Ta b 6 (Folde r6) . Ou r product s ar e generall yreacte d an d full yexpande d i n les s tha n 1 5 seconds . Thi s dat a i s base d upo n an d i s verifie d o n a n ongoin g basi s wit h tes t spray s byou rqualit ycontro l lab . 8 . Offgassin g /

By-products : Th e off-gassin g profile s o fou rproduct s ar e capture d i n a numbe ro freport s unde rTab s 1-5 (Folder s 1-5) . Ther e are tw o methodologie s tha t w e hav e use d t o stud you r Pag e 5 o f6p . 6

products : th e Saskatchewa n Researc h Counci l testin g t o CAN/UL C S774 , a s wel l as , th e Berkele yAnalytica l methodolog yt o C ASpecificatio n 01350 . Th e SR C testin g wa s previousl ydiscussed . Th e Berkele yAnalytica l test s ar e repeate d every2 years, s o fo r severa l product s yo u wil l fin d th e result s o fsevera l tests . I n th e mos t recen t roun d o f testing , th e result s wer e s o lo wa s t o mee t th e requirement s fo rSchoo l Classroom s an d Privat e Office s (mor e confine d space. ) Th e mos t recen t roun d o ftestin g wa s complete d i n Septembe rfor :

•LD-C-5 0 •LD-R-5 0 •MD-C-20 0 •MD-R-21 0 Al l o fthes e product s me t C ASpecificatio n 013 5 - School s an d Office s stringen t standards . O n behal fo fm ycolleague s I than k yo u fo rtakin g th e tim e t o revie wthi s importan t work . A s yo u ca n se e w e hav e investe d considerabl e sum s o fmone yattemptin g t o b e leader s i n importan t field . W e believ e tha t SPF i s a n incredibl e materia l an d tha t i t offer s hug e potentia l t o improv e energ yefficienc yo fbuilding s aroun d th e world . Th e ke yi s responsibl e stewardship . W e loo k forwar d t o you rcomment s an d feedback . Yours truly ,

Pag e 6 o f6Lis t ofReport s / Tabl e o fContent s 1 . LD-C-5 0 a . LD-C-5 0 - CHP S Testin g 201 0 b . LD-C-5 0 - CHP S Testin g 200 8 c . LD-C-5 0 - SR C Testin g Summary d . LD-C-5 0 - SR C Testin g 199 4 e . LD-C-5 0 - Toxicologica l Assessmen t 201 0 f . LD-C-5 0 - Swype s Tes t 201 2 2 . LD-R-5 0 a . LD-R-5 0 - CHP S Testin g 201 2 b . LD-R-5 0 - CHP S Testin g 201 0 c . LD-R-5 0 - SR C Testin g 200 9 d . LD-R-5 0 - Toxicologica l Assessmen t 200 9 3 . MD-C-20 0 a . MD-C-20 0 - CHP S Test s 201 2 b . MD-C-20 0 - CHP S Test s 201 0 c . MD-C-20 0 - VO C Certificat e 201 0 d . MD-C-20 0 - Swype s Tes t 201 2 4 . MD-R-20 0 a . MD-R-20 0 - CHP S Test s 201 0 b . MD-R-20 0 - VO C Certificat e 201 0 5 . MD-R-21 0 a . MD-R-21 0 - CHP S Test s 201 2 6 . Technica l Dat a Sheet s (TDS ) a . LD-C-5 0 Technical Dat a Shee t US A b . LD-C-5 0 v 2 Classi cMaxTechnical Dat a Shee t c . LD-R-5 0 Technical Dat a Shee t d . MD-C-20 0 U S Technical Dat a Shee t e . MD-R-20 0 Technica l Dat a Shee t f . MD-R-21 0 Technical Dat a Shee t 7 . Materia l Safet yDat a Sheet s (MSDS ) a . ASide-Marc h 7 201 1 b . LD-C-5 0 Resi n - Jun e 2 1 201 2 c . LD-C-50v 2 Foa m - Oct 2 9 201 2 d . LD-C-50v 2 Resi n - Oc t 2 9 201 2 e . LD-R-5 0 Foa m - Jul y9 201 2 f . LD-R-5 0 Resi n - Oct 3 1 201 2 g . MD-C-20 0 ASide-Au g 1 2 201 0 h . MD-C-20 0 Foa m - De c3 20 1 i . MD-C-20 0 S Resi n - De c1 3 201 0 j . MD-C-20 0 WResi n - De c1 3 201 0 k . MD-R-20 0 Foa m - Jul y2 8 200 9 I . MD-R-20 0 Resi n - Jul y1 9 201 2 m . MD-R-21 0 Foam-Oct27201 1 n . MD-R-21 0 Resi n - Oc t 2 5 201 1 8 . In-Plan t Testin g a . In-plan t Testin g - 200 8 Report b . In-plan t Testin g - 201 0 Report