p. 1 

# OAR Box 1778 Prepped by Ollie Stewart



### Document

Number: 

# 73 ) ll-C-1 5 Docket Number: 

# A-90-0 6

Printed 10/28/20089:50:54 AM

Sheet 73 of 276P. 2

EB P TE L Mo.202-382-695 0

.it o su. II-C-1 5

UNITE D STATE S ENVIRONMENTA LPROTECTIO NAGENC Y

WASHINGTON

, D.C . 2046 0 

### JU L 

### I 4 196

9 Mr . Willia mR . Elliot t Vic e President , Genera l Manage r o f Electri c Suppl y Norther n Indian aPubli c Servic e Conpan y 526 5 Hohma

n Avenu e Hammond , Indian a4632 0 OFFIC E OP All . AN D RADIATIO N

Re : Baill y Generatin g Statio n Unit s Technolog y Projec t Dear Mr . Elliott : # 7 an d#8 , Clea nCoa l I a mrespondin g t o you r Ma y 15 , 1989 , lette r

t o Mr . Willia mK

. Reill y regardin g aClea nCoa l Technolog y demon

stratio nprojec t

a t th e Baill y Generatin g Statio nUnit s # 7 an d #8 . A s represente dt o us , thi s projec t wil l tes t

th e abilit y o f a n advance dflu e ga s desulfurizatio n proces s t o reduc e sulfu r dioxid e emission s an dwil l involv e th e constructio nan d operatio n o

f alimeston e base dscrubber . Accordin g t o th e informatio nyo

u submitted , thi s technolog y i s no t intende dt o chang e th e rat e o

f emission s o

f othe r criteri apollutants . I understan dyo

u woul dlik e an assuranc e fromth e Unite dState s Environmenta l Protec t io n Agenc y (EPA

) no t t o enforc e Ne

w Sourc e Performanc e Standard s (NSPS ) an dPreventio no f Significan t Deterioratio n(PSD ) regulation s a t th e Baill y Generatin g Statio n Unit s # 7 an d# 8 durin g th e demonstratio n projec t o r whe nth e unit s ar e restore dt o thei r pre-demonstratio nconditio nfollowin g completio n o

f th e project . i n you r lette r you aske dwhethe r

conduc t

ir. y th e projec t

o r restoratio no f

Baill y Unit s #

7 an d# 8 t o thei r

pre-projec t

con ditio n woul dconstitut e a"modification " o r "najo r modification " pursuan t t o 4 0 CF

R§§60.1 4 o r

52.21(b)(2) . Th

e informatio n submitte di s no t

sufficien t

t o determin e whethe r ther e woul d b e aphysica l o r

operationa l chang e whic hwoul dincreas e emissions . Therefore , i t i s no t possibl e fo r

EP A t o determin e wit hcertaint y whethe r ther e woul di n fac t b e amodificatio n o r majo r nod i f icatio nunde r

th e NSP

S an dPS

D programs .P. 3 U,S, . EPA_TE L N o .202-382-695 0 .Ja n 17,9 0 14:5 0 No.00 4 ? .0',

- 2 - However , assumin g thes e unit s wil l b e subjec t t o ne w sourc e requirements , EP

A ha s evaluate dth e merit s o f th e Baill y Unit s # 7 an d# 8 projec t

wit hregar dt o applicabilit y o f th e Agency' s Novembe r 16 , 1984 , Polic y Agains t "No Action " Assurances . A s a result , 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 t appear s t o b e "clearl y necessar y t o serv e th e publi c interest; " i t i s expecte dt o provid e "importan t

infornatio n fo r

researc hpurposes? " an dther e i s anee d"whic hn o othe r mechanis mca naddres s adequately. " EP A support s thi s innovativ e technolog y demonstratio na s amean s o f potentiall y reducin g emissions-o f sulfu r dioxide . Base do nth e representation s mad e i n you r

Ma y 15 , 1989 , letter , EP

A provide s anassuranc e no t t o enforc e agains t civi l violation s o f

NSP S an dPS D requirement s tha t

ma y apply , pursuan t t o 4 0 CF

R§§60.1 4 an d52.21(b)(2) , a s aresul t o f emissio n increase s whic hma

y occu r durin g an dafte r

completio nof

th e innovativ e technolog y demonstratio na t Baill y Unit s #

7 an d#8 . Thi s assuranc e doe s no t appl y t o emissio nincrease s whic h resul t fromphysica l o r

operationa l change s tha t ar e unrelate d t o th e conduc t

o f th e deironstratio nproject , whethe r thes e change s ar e mad

e before , durin g o r

afte r th e project . I n addition , w

e hav e note dtha t

you r lette r state s tha t

th e projec t ma y b e conducte don apermanen t basis . Thi s assuranc e doe s no t appl y t o pernanen t

deironstratio nprojects , tha t is , project s lastin g more tha n fiv e years . O f course , Baill y Unit s # 7 an d# 8 mus t continu e t o compl y wit hal l applicabl e EP A an dStat e emissio nlimit s an dpermi t condition s durin g an dafte r th e demonstration . EP A i s no w evaluatin g i f

achang e i s necessar y t o th e NSP S an dPS D regulation s t o accommodat e temporar y Departmen t of Energ y Clea n Coa l Technolog y Project s an dsimila r EPA-funde d project s t o ensur e tha t th e rule s d o no t

discourag e thes e type s o f projects . Also , EP A an dDO

Ehav e agree dt o apropose d Clea n Ai r

Ac t amendmen

t tha t addresse s thes e projects . I nth e future , whe

nw e receiv e areques t

fo r a"n o action " assurance , w e wil l routinel y as k

th e sourc e fo r informatio n t o allo w u s t o determin e i f i t woul db e appropriat e t o issu e a n assurance . W e hav e no

w mad e adecisio na s t o precisel y what

informatio nw

e need . W

e wil l b e sendin g yo u a lette r askin g yo

u fo r thi s informatio nabou t you r project . W e wil l b e askin g yo u t o submi t thi s informatio nt o ensur e tha t w e hav e complet e file s o nal l th e projects .P. 4

EPfi TE L .202-382-695 0 Ja n 17,9 0 14:5 0 N

o . 00 4 P.0 4



### * j - 3 - Pleas e kee p EPA' s Regiona l Offic e i n Chicag o notifie do f t h e statu s an dsignifican t result s o

f thi s project . You r contac t ther e wil l b e Mr . Davi dKe e a t (312 ) 353-2212 . I f thi s technolog y i s successfu l an demission ' reduction s ar e demonstrated , th e continue dus e of thi s technolog y woul db e strongl y encourage d b y EPA , Sincerely ,

.a mG . R e Assistan t

Administrato r fo r Ai r an dRadiatio n c c : Davi dKee , Regio n V Terrel l Hunt , OEC

M Ala n Eckert , OG

C Bria n McLean , OAIA

P



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