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# OAR Box 1778 Prepped by Ollie Stewart



### Document

Number: 

# 63 ) II-C- 5 Docket Number: 

# A-90-0 6

Printed 10/28/20089:50:54AM Sheet 63 of 276P. 2



### y*°!' 4 

### ' * 3 UNITE D STATE S ENVIRONMENTA LPROTECTIO

NAGENC

Y WASHINGTON

, D.C
. 2046

0 

### \ S 193 1 II-C- 5

AI RANI * H.*|ii' . i IO N Mr
. A
. W

. Hadde r Ai r Qualit yManage r Virgini a Powe r MA Y- 7 |QQ | Innsbroo k Technica l Cente r Gle n Allen , Virgini a • 2306.3 . Dea r Mr . Hadder : I a mrespondin g t o you r Marc h8 , 199 0 lette r i n whic hyo u provide d additiona l informatio n o n th e Clea n Coa l Technolog y(CCT ) projec t a t th e Virgini a Powe r Yorktown Statio n Uni t 2 . I n you r Ma y18 , 198 9 lette r t o th e Administrato r yo u requeste d a n assuranc e from

th e Unite d State s Environmenta l Protectio n Agenc y (EPA ) no t t o enforc e Ne wSourc e Performanc e Standard s (NSPS ) an d Preventio n o f Significan t Deterioratio n (PSD ) regulation s a t Yorktown Powe r Statio n Uni t 2 durin g th e projec t o r whe n th e uni t return s t o it s pre-demonstratio n conditio n followin g completio n o f th e project . Thi s projec t wil l demonstrat e technolog yfo r reducin g sulfu r dioxid e an d nitroge n oxid e emission s throug hth e us e o f th e techniqu e known a s Limeston e Injectio n Multistag e Burne r (LIMB) . Accordin g t o you r letter , th e projec t wil l als o resul t i n a n increas e i n particulat e emission s fromth e injectio n o f sorben t material . Consequently , yo u hav e decide d t o pursu e PS D permittin g fro mth e Virgini a Departmen t o f Ai r Pollutio n Contro l t o cove r th e expecte d increas e i n particulat e emission s i f th e syste mcontinue s t o operat e afte r th e demonstration . W e hav e evaluate d th e merit s o f Virgini a Power' s Yorktow n Statio n Uni t 2 CC T projec t wit hregar d t o applicabilit yt o th e Agency' s Novembe r 16 , 198 4 Polic yAgains t "N o Action " Assurances . A s a result , w e believ e 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 ynecessar yt o serv e th e publi c interest " an d i t i s expecte d t o provid e "importan t informatio n fo r researc hpurposes, " and ther e i s a nee d "whic hn o othe r mechanis mca n addres s adequately. "P. 3

-2

- EPfi support s thi s demonstration o f LIM B technolog

ya s a mean s o f potentiall yreducing sulfur dioxid e an d nitroge n oxid e emission s fro

mutilit yboilers . I f thi s technolog yi s successfu l ' and

- emissio n reduction s ar e dem o n s t ra t edr-the

- con t inued...us e o f thi s technolog

ywoul d be strongl yencouraged by . EPA .

» Base d on th e representation s made in your Marc h8 , 199 0 letter , EPAprovide s a n assuranc e no t t o enforc e agains t civi l violation s o f NSP S an d PS D requirement s tha t mayapply , pursuan t t o 4 0 CFR 60.1 4 an

d 52.2 1 (b)(2) , a s a resul t o f emissio n increase s whic hmayoccur durin g the LIM

B technolog

ydemonstratio n an d emissio n increase s that^-ma yoccur fro

mremoving th e LIM

B projec t a t the Yorktow n Statio n Uni t 2 . Thi s assuranc e doe s no t appl yt o emissio n increase s above pre-demonstratio n level s tha t ar e attributabl e t o physica l o r operationa l change s othe r than thos e necessar

yt o restor e the uni t t o it s pre-demonstratio n condition o r whic hresul t fro mphysica l o r operationa l change s tha t ar e unrelate d t o the conduc t o f the demonstratio n project . Furthermore , thi s "n o action " assuranc e onl yapplie s t o Yorktown' s Uni t 2 , wher e th e LIM B demonstratio n i s being conducted . Ove r the pas t severa l months , the EP Aha s hel d severa l interna l meeting s t o discus s the Clea n Ai r Ac t regulator yissue s raise d b

yth e CC T program . A s a resul t o f thes e discussions , th e Agencyha s decide d t o issue a n interpretive rulin g a s soon a s possibl e t o provid e guidanc e on the definition o f a physica l o r operationa l chang e a s i t applie s t o newsourc e requirements . Essentially , thi s ruling woul d clarif ytha t i f a sourc e onl y add s o r enhance s systems o r device s whos e primaryfunctio n i s th e reduction o f ai r pollutio n (e.g. , LIMB) , an d tha t ar e determine d t o be environmentall ybeneficial , then thos e activitie s woul d no t constitut e a physica l o r operationa l chang e triggering newsourc e requirements . Consequently , neithe r NSPS , PS D o r nonattainmen t newsourc e reviewwoul d appl yt o thes e type s o f activities . Thi s interpretative ruling woul d includ e mos t permanen t a s wel l a s temporar

yproject s unde r th e CC T program . However , i t woul d no t exten d t o project s tha t primaril yexten d the lif e o f a plan t o r increas e capacity . Unti l th e interpretative ruling i s issued , EP A wil l continu e t o issu e "no action " assurance s fo r temporar yCC T projects' .P. 4

-3

- Pleas e keep U.S . EPA' s Regiona l Offic e i n Philadelphi a notifie d o f th e statu s an d significan t result s o f thi s project . Your contac t ther e wil l be Mr . Thoma s Maslan ywho can b e reache d a t (215 ) 597-9390 . - • Sincerely , 

### >C-/3t^- «

v^y William"G . Rosenber g Assistan t Administrato r fo r Ai r an

d Radiatio n cc : Thoma s Maslany , Regio n II I Michae l Alushin , O E Ala n Eckert , OGC Bria n Mclean , OAIA

P