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# OAR Box 1778 Prepped byOllie Stewart



### Document

Number: 

# 36 ) ll-B-1 1 Docket Number: 

# A-90-06

Printed 10/28/20089:50:S3 AM

Sheet 36 of 276* - II-B-1 1 UNITe D STATc - A „ PROTECTIO NAGENCY



## JU L

## 1 OT M_r'.cr;,i-xur 

# TFilljT^ JU NI? 199 1 il j 

### j EP AAI R DOCK. SUBJECT : Applicabilit yo f PS D an d VST-S t o norther n State s Towe r Compan y FRC! ' Directo r

Divisio no f Stationer ySourc e Enforcemen t Sandr a Cardebring , Directo r Enforcemen t Division , Pegio n V Thi s i s i nrespons e t o you r Ka y29 , 19E 0 mer.: o concernin g norther n State s Fewe r Compan y(KSP) . Yo u requeste d a determinatio n ai i t o whethe r modification s propose d for ' unit s 1 , 2 , 3 , an d 4 a t Llac k To g generatin g plan t an d unit s 3 , 4 , -5 an d c= . a t Hig hBridg e remiratiix : plan t vcul d subjec t th e unit s t o USP S an d th e generatin g plant s t o PS D requirements . Thi s respons e i s base d c nth e informatio npresente d i nth e attachmen t t o you r letter , an d o nth e informatio n obtaine d durin g a Jun e 19 , 198 0 phon e conversatio n betwee nP.cber t Myer s o f mystaf f an d Josep hPizzano , Jr. , o f t.sr . Th e origina l desig nfue l fo r thes e unit s wa s 100 % hig hsulfur , hig hLt u Illinoi s coal . T o compl ywit hth e state' s sulfur-in-fue l requirement , r.S

P i nth e earl y1970' s shifte d t o burnin g a blen d o f 7 0 _le vsulfur , lo wCt u I'ontan a coa l an d 30 ? Illinoi s coal , necaus e o f th e limitation s i nth e capacit yo f th e fue l handlin g an d feedin g equipment , I.S P ha s sinc e bee nunabl e t o bur nenoug ho f th e blende d coa l t o achiev e th e sam e leve l o f steem/electricit yproduc

tio n a c i t enjoye d whe ni t burne d 100? , Illinoi s coal . Th e compan yi s studyin g a progra mo f rodification s t o restor e th e derat e th e boiler s currentl yar e experiencing . Th e modifica

tion s principall yinvolv e th e enlargemen t o f th e fue l handlin g and feedin g equipmen t t o eac hboile r s o tha t th e origina l outpu t o f s tear./electricit yca nonc e agai nb e attained . Thi s wil l resul t i n S_ 2 emission s increase s c £ wel l abov e 10 0 ton s pe r yea r a t eac h plant . MS P report s tha t particulat e emission s wil l increas e a s veil , hcvevor , ther e i s n o indicatio na s t o th e effec t th e .v.cc.ificatio

n wil l hav e o nt-P xemissions . Th e issu e i s whethe r 1-.1.T>' • o r PS D rocuircment.-

- v.cul d nnpl yt o thi s propose d mod i f ication . CONCURO-MCG S TP. 3

a modificatio n i s define d a t 4 0 CFP . 60.2(h ) a s "an y physica l chang e in , o r chang e i nth e metho d o f operatio nof , an existin g facilit ywhic hincrease s th e amoun t o f an yai r pollutan t (-.r . v.-hic ha standar d applies ) emitte d int o th e atmospher e b ytha t facilit yo r \:hic

hresult s i nthe emissio no f an yai r pollutan t (t c v.hic ha standar d applies ) int o th e 'atmospher e no t previousl y emitted" . Thi s i s limite d somewha t b y4 0 CF P CO . 1 4 (e)(2) , a s revise d Jul y1 , 1979 , whic hstate s tha t a nincreas e i nproductio n rat e c f a nexisting facilit yi s no t considere d a medificatio n i f tha t increas e ca nb e accomplishe d withou t a capita l expenditur e o n tha t facility . Capita l expenditur e i s define d a t 4 5 FR„fil7 , ^ 0 CF R6C.2(bb ) (January23 , _9G0 ) and . mean s a nexpenditur e fo r a physica l o r operationa l chang e t o a nexisting facilit ywhic h exceed s th e produc t o f the applicabl e IP S asse t guidelin e an d th e existin g facility' s basi s a s define d inthe I Rcode . I t appear s tha t l-T> P i s undergoin g a

nincreas e inproductio n rate . Thi s woul d b e subjec t t o MSF S i f i t involve s a capita l expenditur e o n th e facility , th e individua l boiler . I t i s thu s essentia l t o determin e i f th e component s bein g enlarged , th e fue l handlin g an

d feeding equipment , ar e par t o f th e affecte d facility . V7 e hav e bee ni ncontac t wit hCACF 3 and the yhav e provided

genera l guidanc e a s t c wha t the yconside r t c b e th e component s o f th e affecte d facility . Unde r EPA' s HI D fo r propose d Particulat e flatter Emissio nStandard s fromElectri c Utilit yStea mGeneratin g Unit s (450/2-7P-C06a , Jul y197B ) boile r component s includ e burner s (pulverizer , crusher , stoker) , combustio nai r system , stea mgenera tie r syste m(firebox , tubes ) an d draf t system . Josep hEizzan o mentione d t o r.ofcer t Myers , tha t th e change s bein g considere d includ e changin g th e superheate r spacing , addin g sco t blower s t o th e boiler , an d increasing pulverize r size . Sinc e th e superheate r and pulverize r ar e considere d par t o f th e affecte d facility , replacemen t o r redesig nwhic hwoul d chang e the physica l characteristic s o f thes e component s ma yb e a cas e wher e modifica

tio nprovision s apply . Afina l decisio nmus t awai t a complet e descriptio nbyt.S P o f th e specifi c chnnge s t c b e mad e an d equipmen t involved . Fo r purpose s o f PS D applicabilit y"curin g th e perio d o f th e ••"ehruar y5 , 19G 0 stay(4

_IT . 7P00 ) , majo r modificatio ni s determine d b

ya source' s potentia l t o emi t unde r bot hthe forteir.be

r 5 , 197 9 (4 4 FF . !319_4 ) propose d TS D regulation s an d th e Jun o 19 , 197 8 (4 3 FP . 2C3f-R ) regulations . Majo r modificatio n considers-change s ove r th e entir e source , th e generatin g plant , rathe r thnnchanne s fo r eac hboiler .P. 4

Unde r th e Jun e 19 , 197 C regulation s majo r modificatio ni s define d a s an

yphysica l chang e in , chang e i nthe metho d o f opera tio nof , o r additio nt o a stationarysourc e whic hincrease s th e potentia l emissio nrat e (regardles s o f an yemission s reductio n achieve d elsewher e i nth e source ) o f an yai r pollutan t regulate d unde r th

e .'.c t b yIC O ten s pe r yea r fo r fossi l fuel-fire d toiler s totaling eve r 250'm mEt u pe r hou r hea t input . Potentia l t o emi t mean s th e capabilit ya t maximu m capacit yunles s otherwis e limite d tyanenforceabl e permi t conditio n(4 3 F R26404) , t o emi t a pollutan t inth e absenc e o f ai r pollutio ncontro l equipment . Unde r th e Septembe r 5 , 197 9 propose d FS D regulations , poten tia l t o emi t i s th e capabilit ya t maximu m desig ncapacit yt o emi t a pollutan t afte r th e applicatio no f ai r pollutio ncontro l equipment , i-'ajc r modificatio ni s define d a s an yphysica l chang e ino r chang e inth e metho d o f operatio no f a majo r stationarysource , o r serie s o f contemporaneou s physica l change s i no r change s i nth e metho d o f operatio no f a majo r stationarysourc e tha t woul d resul t i na significan t ne t increas e i ntha t source' s potentia l t o emi t th e pollutan t fo r whic hth e stationarysourc e i s major . Fo r SO 2 and particulat e matte r te nton s wa s propose d t o b e a significan t ne t increase . Unde r th e Jun e 19 , 197 Gregulation s (4 3 F R26404 ) an d th e Septembe r 5 , 197 9 proposal , (4 4 F R51948 ) potentia l t c emi t include s enforceabl e permi t condition s o nth e typ e o f material s combuste d o r processed . Thus , fo r th e tw o generatin g plant s i n c.ua.ticn , potentia l t o emi t woul d includ e Minnesota' s sulfur

in-fue l requiremen t unde r bot hdefinitions . Generatin g potentia l emission s i s limite d b ythe quantit yo f fue l th e sourc e i s capabl e o f combusting . Th e abilit yo f th e generatin g plant s t o combus t additiona l fue l subsequen t t o th e modificatio nresult s i nincrease d emissions . Sinc e th e generatin g plant s wer e no t capabl e o f accommodatin g thi s additiona l fue l •without change s t o th e fue l handlin g an d feeding equipment , thi s woul d represen t anincreas e inth e potentia l t o emit . KS P woul d b e subjec t t o PS D revie wi f th e change s woul d resul t ina nincreas e o f 10 0 ten s pe r yea r o f uncontrolle d SO 2 o r particulat e matte r omission s an d 1 0 ton s pe r yea r o f controlle d emissions . Th e Jun e 18 , 197 8 regulation s woul d b e applied . Thi s determinatio n a_sumo s tha t th e source s i nquestio nar e locate d inattainmen t o r unclassifie d area s an d tha t n o additiona l control s wil l b e adde d t o th e source s t o offse t an yemissio nincrease . Th e fina l PS D regulation s ar e expecte d t o b e promulgate d hefor o th e en

d o f thi s month . I f th e propose d modification s o f th e r:ourco s i nquestio ntaV. e plac e afte r promulgation , th e ne w regulation s wil l appl y(providing the source s canno t h e-P. 5

"grandfathered".- . Unde r th e lastes t draf t o f thes e regulations , a source - mus t tnv e anincreas e o f 4 0 ton s o f particulat e o r SC- , controlle d emission s i norde r t o b e subjec t t c PS D review . Thes e r-i-julatic..

- als o fallow a source' s potentia l t o emi t t o includ e en_crce_tl e limitation s c nhour s o f operatio no r typ e o r amoun t o f materia l combuste d o r processed . Thi s respons e wa s prepare d i nconjunctio nwit hth e Offic e o f Ai r Qualit yPlannin g and Standard s an d th e Offic e o f Genera l Counsel , i f yo u hav e an yquestion s concernin g thi s determination , pleas e contcc t eithe r Rober t Kyer s o r Jane t Littlejc-h no f m ystaff , a t FT S 7 5 5-2564 . Edwar d E . Reic h cc : Pete r Kell y Pete r V.yc>.of f Lar l Sal o Dav e Patric k l.alt Stevenso n Jim . v.'eirol

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