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# OAR Box 1778 Prepped by Ollie Stewart



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Number: 

# 92 ) ll-C-3 4 Docket Number: 

# A-90-0 6

Printed 10/28/20089:50:55AM

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UNITED STATE S ENVIRONMENTAL PROTECTION AGENC Y

WASHINGTON , D.C . 2046 0
FEB 2 2 198

9 OWTC * O f AI R AN O AA0UT1O * Hr . Da y i d U Feltne r senio rAttorne y Ohi o Ediso n 7 6 Sout h Main stree t Akron , Ohi o 4430 8 Dea rMr * Feltner . Th e Administrato rha s aske d n e t o respon d t o you r Decembe r22 , 198 8 lette raskin g tfxetherKe w Sourc e performanc e Standard s (NSPS ) o rPreventio n o f Significan tDeterioratio n _ (PSD) ' regulation' s wil l appl y t o Uni t# 1 .a tth e Nile * Generatin g Statio n i n Niles , Ohio , whe n aRebur n technolog y demonstratio n projec ti s complete d an d Uni t# 1 i s returne d t o it s pre-daaon stratio n "physica l an d cperatin g condition. " Thi s projec twil l tes tReburn technolog y fo rreducin g nitrogen- , oxide s fro aflu e gas * Accordin g to'you rletter * th e Reburn technolog y demonstratio n coul d als o resul ti n reduce d level s at

sulfu rdioxide , particulate s An d othe rpollutants . Thi s projec ti s bein g funde d b y BPA * th e Stat e o f

Ohio , th e Electri c Powe rResearc h institute , an d th e Ga s Researc h Institute . Ohi o Ediso n an d th e othe rparticipant s i n tyis.,.. demonstratio n projec tar e commende d fo rthei reffort s t o ' attai n greate remissio n reductions . EP A support s thi s demonstratio n o f

Rebur n technolog y an d generall y encourage s demonstration s o f

othe rinnovativ e contro l technologies , BP A wil l evaluat e othe rinnovativ e contro l technologie s on a ; case-by-cas e oasis - I f th e projec ti s successfu l an d emissio n reduction s ar e demonstrated , th e continue d us e o f th e technolog y woul d h e strongl y encourage d b y EPA. An increas e i n emissions / a e aresul tc £ returnin g th e uni t hac k t o pre-demonstratio n condition s afte rth e Rebur n project , coul d constitut e amodificatio n o rnajo rmodificatio n pursuan t t o 4 0 CF

R60*1 4 o r52*2 1 (b)(2 ) an d coul d trigge rNSP S o rPSD . EP A ha s evaluate d th e merit s o f Ohi o Edison' s Nile s Uni t1 projec twit h regar d t o applicabilit y o f th e Agency' s Novembe r 16 , 198 4 Polic y Agains t"N o Action " Assurances * A s aresult , \JUtl- W '~3l 9:4 8 FRO M EPA-AQMD-SIXTH-FL R " PAGE

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- 2 - EP A believe s a"n

o action " assuranc e i s appropriat e i n thi s cas e becaus e th e projec twoul d appea rt o b e "clearl y necessar y t o serv e th e publi c interest " and i ti s expecte d t o provid e "importan tinformatio n fo rresearc h purposes " an d ther e i s a nee d "whic h n o othe rmschanis m ca n addres s adequately. n Base d o n th e representation s mad e i n you rletter , EP A wil l no tenforc e NSP S an d PS

D requirement s tha tma y apply , pursuan tt o 4 0 CF

R60.1 4 an d 52.21(b)(2) , a s aresul to f emissio n increase s whic h ma y occu rafte rth e completio n o f th e Reburn technolog y demonstratio n a tNile s Uni t#1 , . specifically , Whe

n th e mi ti s returne d t o it s pre-demonstratio n \ condition . Fo rpurpose s o f advisin g al l partie s t o th e project , th e pre-demonstratio n condition s should , prio rt o th e demonstration , b e establishe d t o avoi d afutur e dispute * I d o no tanticipat e an y proble m i n determinin g pre-demon stratio n levels . Thi s assuranc e doe s no tappl y t o amissio n increaee s abov e th e pre-demonstratio n level s an d als o doe s .no tappl y t o emissio n increase s whic h resul tfrom change s tha tar e unrelate d t o th e conduc to f

th e demonstratio n project , Whethe rthes e change s ar e mad

e before , durin g o rafte rth e project * o f course , Ohi o Ediso n ous tcompl y wit h al l pre-demonstratio n EP A an d stat e emissio n limit s an d permi tcondition s durin g an d afte rth e demonstration , unles s thes e ar e formall y revised * Sincerel y
Don R * Cla y Actin g Assistan tAdministrato r fo rAi ran d Radiatio n