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# OAR Box 1778 Prepped by Ollie Stewart



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Docket Number: 

# A-90-0 6

Printed 10/28/20089:50:54 AM

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3 UNITE

D STATE S ENVIRONMENTA L PROTECTION AGENC Y REGION 5 230 SOUTH DEARBOR

N ST
. CHICAGO , ILLINOI S 60604

REPL Y T O THE AiTENTlO N OF
- 

# \AE EI
•Y , Mr

. Joh n W

. Bosto n Vic e Presiden t ; , Wisconsi n Electri cPowe rCompan!^,'.- 1 \{\^ | 7 |PP ! Pos t Offic e Bo

x204 6 - lxi ' Milwaukee , Wisconsi n 5230 1 Dea rMr

. Boston : 

# Q Iii !

A s yo u know , th e Wisconsi nDepartmen t th e Unite dState s Environmenta l Prote c certai nissue s regardin g th e applicab i Preventio no f Significan t Deteriorat e lif e extensio nprojec t a t th e Por t Wa s whic hi s owne dan d operate db y Wiscon s respondin g t o tha t request , USEP A Reg i projec t als o raise s question s regardi n Sourc e Performanc e Standard s (NSPS ) t o resul t o f th e lif e extensio nproject , yo uo f th e result s o f ou r inquiry . o f Natura l Resource s (WDNR ) ha s aske d tio nAgenc y

(USEPA ) Regio nV

t o revie w 1 it y o f th e Clea nAi r Act' s (Act's ) n(PSD ) requirement s t o th e propose d hingto nelectri c generatin g station , i nElectri c Powe r Compan y (WEPCO) . I

n o nV discovere dtha t th e Por t Washingto n g th e applicabilit y o f th e Act' s Ne w th e Por t Washingto nfacilitie s a s a Th e purpos e o f thi s lette r i s t o infor m

Becaus e th e Por t Washingto nlif e extensio nprojec t involve s matter s o f impor tanc e t o USEP A

a s wel l a s WEPCO , Regio nV sough t assistanc e from USEP A Head quarter' s office s i nWashington , D.C , an d Durham , Nort hCarolina . A t th e reques t o f Regio nV and Headquarter s staffs , WEPC O submitte dextensiv e informatio nregardin g th e Por t Washingto nprojec t an d relate dinterpretiv e issues , an d I wis ht o than kyo u fo r WEPCO' s cooperatio ni nthi s regard . In addition , at.WEPCO' s request , meeting s wer e hel dinDurha m an d Washingto n betwee nWEPC O an d USEP A representatives , an d thos e meeting s wer e helpfu l i n ou r deliberations . Base do nth e informatio nprovide db y WEPCO , th e State , an d USEPA' s ow nfiles , USEP A Headquarter s ha s furnishe dm e wit ha memorandu m detailin g USEPA' s positio nregardin g th e issue s pertainin g t o th e Por t Washingto n lif e extensio nproject . A cop y o f thi s memorandum , signe dby Do nR . Clay , Actin g Assistan t Administrator , i s enclosed . A cop y i s als o bein g furnishe dt o th e State .
A s explaine di nth e enclose dmemorandum , USEP A ha s reache da numbe r o f con clusion s regardin g th e issue s o f lega l interpretatio nsurroundin g th e Por t Washingto nlif e extensio nproject . Thes e view s shoul db e helpfu l t o WEPC O i n understandin g th e potentia l applicabilit y o f th e Act' s ne w

sourc e provision s t o th e Por t Washingto nproject , an d i nassessin g it s option s wit hrespec t t o tha t project . Base don.USEPA' s lega l interpretation s an d th e fact s availabl e a t thi s time , i t appear s likel y tha t th e project , i f i t wer e carrie dou t a s proposed , woul dinvolv e a substantia l an d non-routin e renewa l o f th e Por tP. 4

Washingto nfacilitie s tha t ma y significantl y

i ai r pollutant s fo r a perio dwel l beyon dth e c u facilities . A s such , thi s woul db e th e typ e o t o b e subjec t t o bot hPS D an d NSP S requiremen t critica l factua l informatio nwhic hwoul ddict a pretation s woul dactuall y appl y i nthi s cas e a thi s tim e t o provid e a fina l determinatio no f t o th e Por t Washingto nLif e Extensio nProject , necessar y

i nthre e genera l areas . (I nadditi o shoul dsubmi t a forma l reques t fo r a nNSP S de t 60. 5 i f i t desire s a fina l NSP S applicabilit y ncreas e potentia l emission s o f rren t lif e expectanc y o f thos e f projec t tha t Congres s intende d s . However , becaus e certai n t e ho w th e USEPA' s lega l inter r e lacking , i t i s no t possibl e a t eithe r PS D o r NSP S applicabilit y Additiona l informatio nwoul db e n , a s a preliminar y matter , WEPC O erminatio npursuan t t o 4 0 CF R determination. ) First,.bot hth e PS D an d NSP S program s appl y t o modification s o na pollutant specifi c basis , and USEP A ha s no t bee nfurnishe dwit hsufficien t dat a t o firml y asses s th e impac t o f th e propose dPor t Washingto nrenovation s o nemission s from th e facilities . Th e WEPC O woul dnee dt o provid e suc hdat a befor e USEP A coul d finall y determin e whethe r emission s increase s potentiall y triggerin g PS D an d NSP S applicabilit y

woul doccur . Second , WEPC O ma y

lawfull y

avo i enhancin g pollutio ncontro l eq u operation s belo w

maximu m

poten t t o trigge r applicabilit y woul d WEPCO , i t i s ou r understandin g o f pollutio ncontro l jquipment , o f th e measure s outline dabov e sourc e requirements . I f thi s i tha t appropriat e discussion s m a State , regardin g th e step s tha t subjec t t o PS D an d NSPS . dbot hPS D an d NSP S requirement s b y addin g o r ipment , or , i nth e cas e o f PSD , restrictin g ial , suc htha t th e emissio nincrease s necessar y no t occur . Base do ninformatio nsupplie db y tha t th e compan y

alread y

intend s som e enhancemen t an dWEPC O ma y

desir e t o undertak e a combinatio n rathe r tha nsubjec t itsel f t o th e Act' s ne w s indee dth e case , WEPC O shoul ds o infor m m e s o y b e hel dbetwee nWEPCO , thi s office , an dth e woul db e necessar y

t o rende r th e projec t no t

Third , wit hrespec t t o NSP S applicabilit y t o uni t 1 a t Por t Washington , additiona l informatio nregardin g th e wor kt o b e performe di s necessar y t o determin e whethe r a physica l o r operationa l chang e woul doccu r tha t coul dtrigge r applicability . Again , I wan t t o than kyo u fo r WEPCO' s cooperatio ni nthi s matter , an y questions , pleas e fee l fre e t o contac t me . Sincerel y

your s , 

# r I f yo uhav e



### 'g*yy-c* Davi dKee , Directo r Ai r an d Radiatio nDivisio n(5AR-26 )
Enclosur e

cc : Donal d F

. Theiler , Directo r Burea u o f Ai rManagemen t Wisconsi n Departmen t o f Natura l Resource s