### UNIO N

CARBID E 

# /o i(lo ) V-T K-S-/ 6

P09 1 12 0 508 , P09 1 12 0 509 , P09 1 12 0 51 0

CERTIFIE D MAI L RETUR NRECEIP T REQUESTE D p. 1



### UNIO N CARBID E CORPORATION PO
. BO X1 BO , SISTERSVIULE
. WES TVIRGINI A26 1 7 5 Silicone s an d Urechan e Intermediate s SILICONE S PLAN T Septembe r 17 , 198 6 

### RECEIVE D Regiona lAdministrato r EP ARegio nII I.

* SEP . 2?. 198 6 84 1 Chestnu t

Buildin g Philadelphia , P

A1910 7 ncKFllFY ] Nationa l Respons e Cente r Commandan t - G TG C - 2 210 0 Second Stree t S W Washington , D C 2059 3

Re : Superfun

d Reporting - Continuou s Release s Dea r Si r o r Madam : A s yo u ar e aware , ther e ha s bee nconsiderabl e confusio nregarding th e hazardou s substanc e releas e reporting requirement s unde r th e Superfun d o r th e Comprehensiv e Environmenta l Response , Compensation , and Liabilit yAc t o f 198 0 (CERCLA ) provision s addressing continuou s release s (Section103(f) ) and federall ypermitte d release s (Section101(a)(10)) . Indeed , i n EPA' s promulgatio no f th e fina l regulation s addressing reporting requirement s generally , EP Astate d tha t "du e t o th e complexit yo f th e issue s involved , th e Agenc yha s decide d t o stud y[thes e issues ] further ; today' s rul e doe s no t resolv e [thes e issues]. " 5 0 Fed . Reg . 13458 , Apri l 4 , 1985 . Th e mos t recen t RegulatoryAgend a indicate d tha t EP Aintend s t o propos e regulation s o n bot hsubject s byth e end o f thi s year . Unio nCarbid e Corporatio ni s attempting t o assis t EP Ai n developing technicall ysoun d and consisten t regulations . T o tha t end , Unio nCarbide , togethe r wit hsevera l othe r intereste d companies , hav e me t wit hEP Ai n Washingto nand explore d variou s issue s an d concern s regarding continuou s and federall ypermitte d releas e matters . W e inten d t o continu e thes e discussions . I naddition , th e Sistersvill e plan t o f Unio nCarbid e wishe s t o shar e wit hEP Aand th e Nationa l Respons e Cente r dat a and informatio nregarding certai nai r release s whic hi t believe s ma yfi t withi nth e continuou s releas e o r federall ypermitte d releas e reporting exemptions . Thi s dat a and information , whic har e enclosed , relat e t o emission s whic har e routine , anticipate d release s t o th e ai r incidenta l t o th e norma l manufacturing , treatmen t processes , and operatio no f facilitie s and vessel s a t th eP. 2
-2
- Sistersvill e Plant . Thes e releases , whic hma yequa l o r excee d th e applicabl e reportabl e quantity , ar e stabl e i nquantit yand rat e and ar e generall y predictabl e during norma l operations . Mos t o f the enclose d dat a wer e previousl ysubmitte d t o th e stat e agencyi nth e for mo f a nAi r Emission s Inventory , date d Decembe r 20 , 1985 . I t mus t b e recognized an d emphasize d tha t the emissio nvalue s (whichar e reported i nthe attache d dat a a s range s o f emissions ) ar e estimate s o f actua l releases . Thes e estimate s ar e base d o non e o r mor e variabl e factor s and sources , whic hmayinclud e proces s designcalculation s (bothoperationa l and treatment) , sampling data , emissio nfactor s and ofte nrequir e individua l engineering judgements . Fo r example , th e us e o f controversia l emissio n factor s i ncalculating fugitive losse s ca nlead t o widel yvarying results . I nth e absenc e o f guidanc e fromEP Aa s t o wha t constitute s a "statisticall ysignifican t increase " fo r a continuou s release , th e Sistersvill e plan t intend s t o repor t anyrelease s whic har e know nt o excee d the uppe r limi t o f th e identifie d range . Reportabl e release s no t covere d b y th e (above o r enclosed ) informatio nwil l continu e t o b e reporte d o na n individua l basis . I nth e cours e o f ou r dat a compilatio nand review , w e identifie d a nissu e o f broa d applicatio nwhic hw e wis ht o brin g t o you r attention . A s yo u ar e aware , nitroge ndioxide , whic hi s bot ha hazardou s substanc e unde r CERCI Aand a criteri a pollutan t unde r th e Clea nAi r Act , i s generate d a s a produc t o f combustio ni nindustria l boilers , flare s and othe r combustio ndevices . From al l suc hsources , nitroge ndioxid e i s produce d a t rate s ofte nmeasure d i nton s pe r day . Unio nCarbid e ^assume s tha t thes e combustio nproduc t emission s wer e no t intended t o b e include d i n CERCLA' s reporting requirements . A s a criteri a pollutant , nitroge ndioxid e emission s ar e eithe r directl ypermitte d o r generall yregulate d (fo r th e large r sources ) unde r Stat e Implementatio n Plans . I neithe r case , EP Ai s awar e o f thei r existenc e an d ha s n o reaso nt o exercis e it s authorit yunde r CERCLAi nrespons e t o suc hemissions . Accordingly , w e ar e no t submitting anydat a regarding suc hnitroge ndioxid e emissions . Th e Unio n Carbid e Sistersvill e plan t believe s th e dat a and informatio n containe d i nthi s submissio nestablis hfo r i t th e identifie d ai r emission s a s continuou s release s unde r CERCLA . I f NR C o r EP Awant s t o receiv e additiona l dat a o r information , o r i f yo u hav e anyquestion s regarding th e content s o f thi s lette r o r it s attachments , pleas e advis e me .

Phai r Plan t Manage r Attachmen t LWP:JGO:sl c 0685 A cc : F . E . Daile y R . L . Foste r
, , R . F . Kelle y R . A . Matthew s J . G . Or r E . D . Southar d W . V . Summer s Stat e Agenc y

### (1 )

Chemica l Attachmen t I

SUMMARYO F CONTINUOU S EMISSION S FO RTH E (NAME O F LOCATION )



### (2 )

Sourc e (Proces s Unit , Facilit yID , etc. ) Silane s Trichlorosilan e System Proces s Are a ID # 11 1 Emissio n P t ID # 102 9 Equipmen t ID # C5/6/ 8 Silane s Refrigeratio nSys . Proces s Are a ID # 11 1 Emissio nP t ID # 103 1 Equipmen t ID # K62/6 3 Polymer s I I Cappe r Proces s Are a ID # 30 7 Emissio n P t ID # 3018,301 9 Equipmen t ID # T-130 0 Distributio nPiping , Valv e Packing , Connection , Distributio nCompressor s During Railca r Unloading (3 )



### Caus eo f Releas e (4 )

No . o f time s R Q equalle d o r exceede d pe r yea r (5 )

Rang e o f Releas e Minimu mI Maximum Nam e Methy l Chlorid e

Methy l Chlorid e

Methy l Chlorid e

Methy l Chlorid e Methy l Chlorid e

JG0:sl c 0685 A CA S No . 7487 3

7487 3

7487 3

7487 3
7487 3 Routing Venting , Fugitiv e Emiss . 

### 36 5

Routing Venting , Fugitiv e Emiss .

Routin e Venting , Fugitiv e Emiss .

Routin e Venting , Fugitiv e Emiss . Routin e Venting , Fugitiv e Emiss . 

### 36 5

25 6

36 5 (lb/day )

8 4



### 13 7

86 7 (lb/day )

14 0



### 22 8

1 4 144 5



### 1 0
2 4

T J C O