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# OAR Box 1840 Prepped byOllie Stewart



### Document

Number: 

# 2DIV-H-3 9 Docket Number: 

# A-90-3 7

Printed 11/14/20081:02:58PM

Sheet 21 of 23• To : Amy_L._Farrell@omb.eop.go v cc : Subject : anothe rdraf

to n clea n uni t , „ „ A-90-3 7 IV-H-3 9 Bil l Wehru m 10/04/2002 09:1 3 A M
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Lyn n Hutchinso n 10/02/2002 03:1 4 P M To : Bil l Wehrum/DC/USEPA/US@EPA cc : Jua n Santiago/RTP/USEPA/US@EPA Subject : anothe rdraf

to n clea n uni t Her e i s arevise d draf to n th e ne wclea n uni tsection

. I adde d anothe rparagrap h (c ) i n ho wth e emissio n increas e i s determine d fo rnettin g becaus e i toccurre d t o m e tha tw e migh thav e ne wunit s (existin g bu t les s tha n tw o year s ofemission s data ) tha twoul d b e agai n modified

. yo u wer e goin g t o tal k

t o Bruc e abou tth e paragrap h o n complyin g wit h th e provision s fo rmaintai n th e clea n uni tdesignation/statu s

>* \ Cleanunit10-1edits.w pP. 3

(c ) Clea nUni t Tes t fo r emission s unit s tha t hav e gone ' throug hconventiona l majo r NS Rpermittin g pursuan t t o paragrap h(a ) o f thi s section . Th e pla nshal l provid e a nowne r o r operato r o f a majo r stationar ysourc e th e optio no f usin g th e Clea nUni t Tes t t o determin e whethe r a projec t a t a Clea nUni t i s a majo r modificatio naccordin g t o th e provision s i nparagraph s (c)(1 ) throug h(11 ) o f thi s section . (1 ) Applicability . Th e provision s o f thi s paragrap happl y t o an yemission s uni t fo r whic hth e reviewin g authorit yha s issue d a permi t unde r it s conventiona l requirement s o f th e nonattainmen t majo r NS Rprogra mwithi nth e pas t 1 0 years . (2 ) Majo r modificatio nprovision s fo r Clea nUni t - Th e Clea nUni t Test . Th e provision s belo wi nparagraph s (c)(2)(i ) throug h(iv ) o f thi s sectio nappl yt o determin e whethe r a projec t a t a Clea nUni t i s a majo r modification . An yactivit ya t a n emission s uni t fo r whic hth e owne r o r operato r begin s actua l constructio nafte r th e effectiv e dat e o f th e Clea nuni t statu s (a s determine d i naccordanc e wit hparagrap h(c)(4 ) o f thi s section ) an d befor e th e expiratio ndat e (a s determine d i n accordanc e wit hparagrap h(c)(5 ) o f thi s section ) wil l b e considere d t o hav e occurre d whil e th e emission s uni t wa s a Clea n Unit . (i ) Th e definitio no f majo r modificatio na t paragrap h(a)(1)(v ) o f thi s sectio ndoe s no t appl yt o Clea n Units .P. 4

(ii ) A t a Clea nUnit , a majo r modificatio nmean s an yprojec t

a t th e Clea nUni t tha t meet s bot hth e criteri a o f th e two-ste p evaluatio nproces s below : (A ) Woul d th e projec t caus e th e emission s uni t t o excee d th e emissio nlimit(s ) containe d i nit s permi t issue d unde r th e conventiona l requirement s o f th e majo r NS Rprogra mfo r on e o r
mor e o f th e Clea nUni t pollutants , o r otherwis e caus e th e uni t t o fai l t o maintai nClea nUni t statu s a s describe d belo wi n paragrap h(c)(7 ) o f thi s section ? I f not , th e chang e doe s no t constitut e a majo r modificatio nan d n o actio ni s required . I f

so , g o o nt o paragrap h(c)(2)(ii)(B ) below . (B ) Woul d th e projec t resul t i na significan t ne t emission s increas e [a s define d i nparagraph s (a)(1)(vi ) an d (x ) o f thi s section ] o f on e o r mor e o f th e Clea nUni t pollutants ? I f so , th e chang e constitute s a majo r modificatio nan d i s subjec t t o revie w
an d permittin g unde r th e conventiona l requirement s o f th e applicabl e majo r NS Rprogram . I f not , th e emission s uni t ma yno t increas e emission s unles s th e owne r o r operato r obtain s a permi t unde r a SIP-approve d permittin g progra mtha t allow s th e emission s uni t t o increas e emissions . (iii ) Fo r purpose s o f determinin g whethe r ther e wil l b e a significan t ne t emission s increas e fro mth e projec t a s require d unde r paragrap h(c)(2)(ii)(B ) above , th e amoun t o f emission s increas e fro mth e Clea nUni t shal l b e compute d a s follows : (A ) Fo r a nexistin g electri c utilit ystea mgeneratin g unit ,P. 5

th e increas e i s equa l t o th e differenc e betwee nth e representativ e actua l annua l emission s (a s define d i nparagrap h (a)(1)(xxi ) o f thi s section ) an d th e baselin e actua l emission s (a s define d i nparagrap h(a)(1)(xxxv ) o f thi s section ) fo r th e unit . (B ) Fo r a nexistin g emission s uni t (othe r tha na nelectri c utilit ystea m

generatin g unit) , th e increas e i s equa l t o th e differenc e betwee nth e futur e annua l emission s (a s define d i n paragrap h(a)(1)(xxviii ) o f thi s section ) an d th e baselin e actua l emission s (a s define d i nparagrap h(a)(1)(xxxv ) o f thi s section ) fo r th e unit . (C ) Fo r a ne wemission s unit , th e increas e i s equa l t o th e differenc e betwee nth e unit' s potentia l t o emi t an d th e baselin e actua l emission s (a s define d i n paragrap h(a)(1)(xxxv ) o f thi s section ) fo r th e unit . (iv ) I f a projec t a t a Clea nUni t meet s th e criteri a abov e i nparagrap h(c)(2)(ii)(A) , then , followin g suc hchange , th e emission s uni t n o longe r qualifie s a s a Clea nUni t (regardles s o f whethe r th e projec t als o result s i na significan t ne t emission s increase) , an d th e owne r o r operato r ma yn o longe r us e th e Clea n Uni t Tes t t o determin e whethe r a projec t a t th e emission s uni t i s a majo r modification . (3 ) Qualifyin g o r Re-Qualifyin g t o us e th e Clea nUni t Applicabilit yTest . I norde r t o us e th e provision s containe d i n paragrap h(c)(2 ) o f thi s sectio n t o determin e whethe r a projec tP. 6



### a t a nemission s uni t i s a majo r modification , the emission s uni t mus t b e a Clea n Unit . An emission s uni t automaticall yqualifie s a s a Clea n Uni t whe n th e uni t meet s the criteri a belo wi n paragraph s (c)(3)(i ) through(iii ) o f thi s section . After , the origina l clea n uni t statu s expire s i n accordanc e wit hparagraph (c)(5 ) o f thi s section , suc hemission s uni t mayre-qualif ya s a Clea nUni t unde r eithe r paragrap h(c)(3)(iv ) below , o r unde r th e Clea nUni t provision s i nparagraph(d ) o f thi s section . T o re qualif ya s a Clea n Uni t unde r paragraph(c)(3)(iv) , th e emission s uni t mus t obtai na ne wmajo r NS Rpermi t issue d throughthe conventiona l requirement s o f the nonattainmen t majo r NS Rprogram an d mee t al l the criteri a belo wi nparagraph s (c)(3)(iv) . Clea n Uni t statu s i s determine d individuall yfo r eac hpollutan t emitte d b yth e emission s unit . (i ) Permitting requirement . The emission s uni t mus t hav e bee nissue d a majo r NS Rpermi t unde r th e conventiona l requirement s o f the nonattainmen t majo r NS Rprogram withi n th e pas t 1 0 years . I f i t i s no t clea r fro mth e fac e o f the permi t whethe r suc hpermi t carrie s ou t thes e requirements , the nthe owne r o r operato r mus t b e abl e t o maintai nan d provid e informatio n tha t woul d demonstrat e tha t thi s permitting requiremen t i s met . . (ii ) Qualifying ai r pollutio n contro l measures . Ai r pollutan t emission s fromthe emission s uni t mus t b e reduce d throughth e us e o f ai r pollutio ncontro l technology(whichP. 7 I



### include s pollutio nprevention ) tha t mee t bot hth e followin g requirements : (A ) Th e contro l technolog yachieve s th e lowes t achievabl e emissio nrat e (LAER ) leve l o f emission s reduction s a s determine d throug hth e conventiona l requirement s o f th e nonattainmen t majo r NS Rprogra mwithi nth e pas t 1 0 years . However , th e emission s uni t i s no t eligibl e fo r Clea nUni t statu s i f th e LAE R determinatio nresulte di nn o requiremen t t o reduc e emission s belo wth e leve l o f a standard , uncontrolled , ne wemission s uni t o f th e sam e type . (B) Th e owne r o r operato r incurre da capita l expenditur e t o instal l th e contro l measures . Fo r th e purpos e o f thi s determination , a capita l expenditur e include s expense s t o researc hth e applicatio no f a pollutio npreventio ntechniqu e to . th e emission s uni t o r expense s t o appl ya pollutio npreventio n techniqu e t o a nemission s unit . (iii ) Dat e o f operatio no f ai r pollutio ncontro l measures . Th e emission s unit' s contro l measure s mus t hav e gon e int o servic e afte r Novembe r 15 , 1990 . (iv ) Re-qualifyin g fo r Clea nUni t Status . Th e emission s uni t mus t obtai na ne wmajo r NS Rpermi t tha t require s complianc e wit h th e current-da ylowes t achievabl e emissio nrat e (LAER)a s determine dunde r th e conventiona l requirement s o f th e nonattainmen t majo r NS Rprogram , an dth e emission s uni t mus t mee t th e requirement s i nparagraph s (c)(2)(ii)(A ) an d(c)(2)(iii )P. 8

above . (4 ) Effectiv e dat e o f Clea nUni t status . Th e effectiv e dat e o f a nemission s unit' s Clea nUni t statu s [tha t is , th e dat e
o nwhic hth e owne r o r operato r ma yus e th e Clea nUni t Tes t t o determin e whethe r a projec t a t th e emission s uni t i s a majo r modification ] i s determine d accordin g t o th e applicabl e paragrap h (c ) (4 ) (i ) o r (c ) (4 ) (ii ) below . (i ) Origina l Clea nUni t Status , an d Emissio nUnit s tha t re qualif ya s Clea nUnit s b yimplementin g a ne wcontro l technolog y t o mee t current-da yLAER . Th e effectiv e dat e i s th e dat e th e emission s unit' s ai r pollutio ncontro l technolog yi s place d int o service , o r thre e year s afte r th e issuanc e dat e o f a permi t issue d unde r th e conventiona l requirement s o f th e nonattainmen t majo r NS Rprogram , whicheve r i s earlier , bu t n o soone r tha nth e dat e tha t provision s fo r th e Clea nUni t applicabilit ytes t ar e approve d b yth e Administrato r int o th e Stat e Implementatio nPla n

an d becom e effectiv e fo r th e Stat e i nwhic hth e uni t i s located . (ii ) Emissio nUnit s tha t Re-qualif yfo r a s Clea nUnit s Statu s usin g a nexistin g contro l technology . Th e effectiv e dat e i s th e dat e th e new , majo r NS Rpermi t i s issued . (5 ) Clea nUni t expiration . A nemission s unit' s Clea nUni t statu s expire s [tha t is , th e dat e o nwhic hth e owne r o r operato r

ma yn o longe r us e th e Clea nUni t Tes t t o determin e whethe r a t th e emission s uni t i s a majo r modification ] accordin g t o th e applicabl e paragrap h(c)(5)(i ) o r (ii ) below .i 9
_

(i)Origina l Clea nUni t Status , an d Emissio nUnit s tha t re qualif yb yimplementin g ne wcontro l technolog yt o meetin g curren t da yLAER . Fo r an yemission s uni t tha t automaticall yqualifie s a s a Clea nUni t unde r paragraph s (c)(3)(i ) throug h(iii ) o f thi s section , th e Clea nUni t statu s expire s 1 0 year s afte r th e effectiv e date , o r th e dat e th e equipmen t wen t int o service , whicheve r i s earlier ; or , i t expire s a t an ytim e th e owne r an d operato r fail s t o compl ywit hth e provision s fo r maintainin g Clea nUni t statu s i nparagrap h(c)(7 ) o f thi s section . (ii)Emissio n Unit s tha t Re-qualif yfo r Clea nUni t Statu s usin g a nexistin g contro l technology . Fo r an yemission s uni t tha t re-qualifie s a s a Clea nUni t unde r paragraph s (c)(3)(iv ) o f thi s section , th e clea nuni t statu s expire s 1 0 year s afte r th e effectiv e date ; or , i t expire s an ytim e th e owne r o r operato r fail s t o compl ywit hth e provision s fo r maintainin g th e Clea n Uni t Statu s i nparagrap h(c)(7 ) o f thi s section . (6 ) Require d titl e V permi t conten t fo r a Clea nUnit . Afte r th e effectiv e dat e o f th e Clea nUni t Status , an d i n accordanc e wit hth e provision s o f th e applicabl e Titl e V permi t progra m

unde r Par t 7 0 o r Par t 7 1 o f thi s chapter , bu t n o late r tha nwhe nth e Titl e V permi t i s renewed , th e Titl e V permi t fo r th e majo r stationar ysourc e mus t includ e th e followin g term s an d condition s relate d t o th e Clea n Unit : (i ) Astatemen t indicatin g tha t th e emission s uni t qualifie s a s a Clea nUni t an d identifyin g th e pollutant s fo r whic hthi sP.1 0



### designatio n applies ; and , (ii ) Th e effectiv e dat e o f Clea nUni t status . I f thi s dat e i s no t know

n whe n the Clea n Uni t statu s i s initiall yrecorde d i n th e Titl e V

permi t (e.g. , becaus e the ai r pollutio ncontro l technologyi s no t ye t i n service) , the permi t mus t describ e the even t tha t wil l determin e the effectiv e dat e (e.g. , the dat e th e contro l technologyi s place d int o service) . Onc e the effectiv e dat e i s determined , th e owne r o r operato r mus t notif ythe reviewing authorit yo f the exac t date . Thi s specifi c effectiv e dat e mus t b e adde d t o th e source' s titl e V permi t a t the firs t opportunity , suc ha s a modification , revision , reopening , o r renewa l o f th e titl e V permi t fo r an

yreason , whicheve r come s first , bu t i n n o cas e late r thanth e nex t renewal ; an d (iii ) Th e expiratio ndat e o f th e Clea nUni t designation . I f thi s dat e i s no t know n whe nthe Clea nUni t statu s i s initiall y recorde d int o th e Titl e V permi t (e.g. , becaus e th e ai r pollutio n contro l techonologyi s no t ye t i n service) , the nthe permi t mus t describ e the even t tha t wil l determin e the expiratio ndat e (e.g. , th e dat e the contro l technolog yi s place d int o service) . Onc e th e expiratio n dat e i s determined , the owne r o r operato r mus t notif ythe reviewing authorit yo f the exac t date . Th e expiratio n dat e mus t b e adde d t o th e source' s titl e V permi t a t the firs t opportunity , suc ha s a modification , revision , reopening , o r renewa l o f the titl e V permi t fo r an

yreason , whicheve r come s first , bu t i n n o cas e late r tha nthe nex t renewal ; and ,P.1 1



### (iv ) Al l emissio n limitation s an d wor k practic e requirement s adopte d i n conjunctio n wit hth e lowes t achievabl e emission s rat e (LAER) , an

d an yphysica l o r operationa l characteristic s upo n whic hthe reviewing authorit yrelie d i n making the LAE R determinatio n (e.g . th e emissio n unit' s capacit yo r throughput) ; (v ) Monitoring , record keeping , an d reporting requirement s a s necessaryt o demonstrat e tha t the emission s uni t continue s t o t o mee t th e criteri a fo r maintaining Clea n Uni t status . [See paragraph(c)(7 ) o f thi s section , below] . (vi ) Term s reflecting the owne r o r operator' s dutie s t o maintai nth e Clea n Uni t designatio n an d the consequence s o f failing t o d o so , a s presente d belo wi nparagraph(c)(7 ) o f thi s section . (7 ) Maintaining Clea n Uni t status . T o maintai n Clea nUni t status , th e owne r o r operato r mus t conform t o al l the restriction s liste d belo wi nparagraph s (c)(7)(i ) through(iv ) o f thi s section . Thi s paragrap h(c)(7 ) applie s independentl yt o eac hpollutan t fo r whic hthe emission s uni t ha s Clea nUni t status . Tha t is , failing t o conformt o the restriction s fo r on e pollutan t affect s Clea n Uni t statu s onl yfo r tha t pollutant . (i ) Th e Clea n Uni t mus t compl ywit hthe emissio n limitation(s ) and/o r wor k practic e requirement s adopte d i n conjunctio n wit hthe lowes t achievabl e emissio nrat e tha t ar e recorde d i nth e majo r NS Rpermit , an d subsequentl yreflecte d i n the Titl e V

permit .P.1 2

(A ) Th e owne r o r operato r ma yno t mak e a physica l chang e i n o r chang e i nth e metho d o f operatio n o f th e Clea nUni t tha t cause s th e emission s uni t t o functio ni na manne r tha t i s inconsisten t wit hth e physica l o r operationa l characteristic s upo nwhic hth e permittin g authorit yrelie d i nmakin g th e LAE R determinatio n(e.g . emission s unit s capacit yo r throughput) . (B ) Th e Clea nUni t ma yno t emi t abov e a leve l tha t ha s bee n offset . (iii ) Th e Clea nUni t mus t compl ywit han yterm s an d condition s i nth e titl e V permi t relate d t o th e unit' s Clea nUni t status . (iv ) Th e Clea nUni t mus t continu e t o contro l emission s usin g th e specifi c ai r pollutio ncontro l technolog ytha t wa s th e basi s fo r it s Clea nUni t status . I f th e emission s uni t o r contro l technolog yi s replace d tha nth e Clea nUni t statu s ends . (8 ) Credi t fo r Emissio n Reduction s a t Clea nUnits . Emission s change s tha t occu r a t a Clea nUni t mus t no t b e include d i ncalculatin g a significan t ne t emission s increas e (tha t is , mus t no t b e use d i n a "nettin g analysis") , o r b e use d fo r generatin g offset s unles s th e chang e occur s befor e th e effectiv e dat e o f Clea nUni t status ; or , th e chang e occur s afte r th e Clea n Uni t statu s expires ; or , th e emission s uni t reduce s emission s belo wth e leve l tha t qualifie d th e uni t a s a Clea nUnit . I f th e Clea nUni t reduce s emission s belo wth e leve l tha t qualifie d th e uni t a s a Clea nUnit , then , th e owne r o r operato r ma ygenerat e aP.1 3



### credi t fo r the differenc e betwee nLAE Ran d the emissio nunit' s baselin e actua l emission s i f suc hreduction s ar e surplus , quantifiable , permanen t an d federall yenforceable . (9 ) Effec t o f redesignatio no n Clea n Uni t status . Th e Clea nUni t statu s o f a nemission s uni t i s no t affecte d byre designatio n o f th e attainmen t statu s o f the are a i nwhic hi t i s located . Tha t is , i f a Clea n Uni t i s locate d i na nattainmen t are a an d th e are a i s re-designate d t o nonattainment , it s Clea n Uni t statu s i s no t affected . Similarly , redesignatio nfrom nonattainmen t t o attainmen t doe s no t affec t Clea nUni t status . However , i f a n existing Clea nUni t statu s expires , i t mus t re qualif yunde r th e requirement s tha t ar e currentl yapplicabl e i n the area .