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Number: 

# 232 ) ll-F-2 2 Docket Number: 

# A-90-3 7

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PM Sheet 232 of 250P. 2

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NSRPackage —

propose d DOI , NPS/USFW S insert s an dDeletion s to 11/16/9 4 OM

B Versio

n (NOTE : A

n* denote s items tha t ma yneed t o b e raise d -\\ OMbmtg j Regulatio n [NOTE : corresponding change s t o par t 5 2 shoul d als o be j made. ] *Par t 51 , P . 8 , Definitions : Add t o en

d o f enlr

y"(40 ) Ai r QualityRelate d Value" : "IJincludin g thoe e value s associate d wit hecosystemimpacts. " Inser t "Clas s TT, " top o f pag e 9 afte r "Clas s I. " *rar t 51 , p . 0 , Definitions : Delet e th e "an " i n entr y"(41 ) Advers e Impac t o nanA| i Relate d value " an d ad d an"(s)' \ afte r "Value. " specific " an

d substitut e "one o r more" , ad d an"s " t o pn d o f presen t tex t an d add : "i na [Federal ) Clas s impai r th e structur e an d functionin

g o f anecosystem . Tar t 5 1 [an

d ad d t o Par t 52] , whereve r advers e impact , o f s n advers e impact , o r monitoring impact s wit hregard a t issue , consultatio nwit nth e affecte dKL Mshal l b e (or "implied " i f "required " i s to o strong ] NOTE : I f n o agreemen t on thi s o r similar , centralize d consultatio n requirement , the nrete r t o mark-u p fo r place s i nregulatio n wher e consultatio n i s desirable , defining "affecte d FLM, " eveni t mean s a cutof f i nkm , ] cutor f r e conformit yregs . Par t 51 , p . 11 , Definitions : un (47)(ii ) ad

d "o r nitroge n oxides " afte r "voiat i compounds. " [NOTE : Bil l T . previousl yagreed t o thi s change , bu t discusse d wit n KTP. J Par t 51 , p . 13 , "(iii) " r e BACT : Chang e "may " t o "sha I I. " P.13 , del-L e sectio n "(iv) " inentiretyo r chang e "lateltf " i n line 3 t o "earlier. " NOTE : Ril l T . though t thes e change s wer e reasonable , bu t w e di d no t discus s wit hRTP . Poin t is , EP Ashoul d no t cu t ot t eval./discussio n o f DAC T befor e clos e o f publi c commen t period
. *Par t 51 , p . 15 , "(o)" : Delet e (o)(3 ) an

d revis e (o)(1 ) o f curren t reg . a s fo l "The owne r o r operato r shal l provid e ananalysi s o f th e o f visibility , soils , an d vegetationb

ythe propose d s i a s ananalysi s o f AQRV s (as define d i n(40 ) above ) , w or.r.r r a s a resul t o f the sourc e o r modificatio n commercial , residential , industrial , an d othe r growt h wit hth e sourc e o r modification
. Concerning an y vegetatio n no t associate d wit hanAQRV , a s define d in owne r or operato r need no t provid e an analysi s o t vegeta t n o significan t ecologica l value. " I n i t i s
a ni r Qualit y )elet e " a value " aL area , o r 'hrougnou t [litigatio

n AQRVc i e Required. " locatio n fo r ndividua l iji I' s avoi d .k c 10 0 k m
organi c t wa s no t

impairmen t a s we i I

. ichwoul d genera l associate d npact s on (40) , the on havingP. 4

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i o n betwee n S REPA' s Th e Jermittin g •f t n s w [Note : Thi s propose d rewrit e trie s t o dra wa distinct i AQRV c o n .fed . land s an d othe r resources , t o hel p ad d concer n abou t "no t makin g applicant s d o somethin y determ . o f "n o sign
. eco . value " woul d b e mad e b y authorit yan d i s irrelevan t t u Clas s I an d l i areas. ] *Par l 51 , p . 17 , U) federa l Lan d Manger—Responsibility : Delet e (ii ) an d (A) , (B) , an d (C ) unde r that , an d revis = (iii ) a s follows : "Th e Federa l Lan d Manager , throug hth e permittin g auth:rity , EP A Bulleti nBoard , o r directly , shal l mak e availabl e t o the . applicant , whos e emission s ma yaffeo t a Federa l Clas s I are a an 1 ' relevan t informatio n concernin g AQRV s o f tha t clas s I area. " •Par t 51 , p . 1 8 an d p . 19 , demonstratio n o f advers e .npac t an d denial , an d p . 21-2 2 (q ) publi c participation : Thes e section s nee d L o b e rewritte n t o clarif yEPA' s . nten t an d provid e a consistent , realisti c framewor k L o mak e an d evaluat e th e FLM' S advers e impac t determination
. Th e firs t headin g phoul d b e publi c participation , an d describ e permittin g authorit y requirement s fo r notifyin g th e publi c a s L u state' s preliminar y determinatio n summary . Tha t notificatio n shoul d rela K an yFL M concern s presente d L o date , includin g an yFL Mpreli n impac t determination , an d mak e FL Mcomment s available
. FL Mha s al l th e info
. nee . t o bas e advers e impac t dcterm i advers e Onc e th e Hatio n on , whic hma yno t occu r unti l afte r stat e prepare s it s prsliminar y determinatio n nummary , the n i f FL M. i s incline d t o ma< e suc ha determination , th e FL Man d permittin g authorit yshoul d insul t o/ i th e determination , relevan t analyses , an d mitigatio n s :rategie e An ywriting s betwee n FL Man d stat e permittin g authorit; ' o nthi s consultatio n an d resolutio n (i.e. , otat e ha s burde • t o pu t rejectio n o f FLM' s determin
. i n a rational e writte n form ) |ehoul d g o i n th e publi c docket .

Preambl e *P . 114 , Inser t determination" : A , fire t ful l para. , afte r "advers e impac t
wit nth e Th e NS RClas s I Are a Coordinatio n Subgrou p cam e u p followin g criteri a t o b e considere d b yth e permittin g authority , (a ) Scientifi c basi s u f Lh e FLM' S advers e impac t dftterm i fiation ; (h ) Existin g statu s o f potentiall yaffecte d Clas s I area s AQRVs;

- (c ) Presenc e o f mitigatin yfactors , suc ha s offsets ; (d ) Permi t conditions , cuc ha s pre - an d posL-corJ ! monitoring , wit hcontingen t correctiv e actio n plan ; (c ) Informa l mediatio n effort s durin g consideration ! application ; (f ) Participatio n hyth e FL Mdurin g completenes s review ; (g ) Publi c support/oppositio n t o th e permit ; an d ind thei r
utructlo n
o f th eP. 5

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(h ) alternativ e siting
. (NOTE : b

- d , an

d e fro mthe li3 t above ar e probabl ymoflt imp
. t o se t ou t fo r FLM' s benefit. ] *P . 315 , Inser t B , afte r (2) , deleting existing tex t an d yubstitur. e followinq : Existing Advers e Impact s Previousl yDocumented fo r th e clas s I Are a Wher e th e FLMha s previousl ypublicl ydocumente d o r certifie d exieting advers e impac t condition s a t a Clas s T area , o r ietermincd tha t on e o r mor e particula r proposed source s woul d constitut e an advers e impac t t o anAQR V a t a particula r Clas s I *:ea , tha t informatio n shoul d be affurde d substantia l weigh t b yth e sarmittin

g authority
. Th e legislative histor yo f th e CA

Ainstruct s t o "err

on th e sid e o f protecting the air-qualityrelate d value s ; s r futur e generations. " S . Rep . No . 9f5-i2*> , yi)t hCong . , 1s t Sess . 5 6 (1977 ) Th e permitting authorit y3houl d conside r tha t instructior , i nligh t o f existing condition s a t a particula r Clas s I area . P . 329 , Se e JB' e Significan t Impac t Inse t *r . 33C , Inser t C , afte r "5<>.ZI (o ) P ) , " delet e res t o f tora . an d substitute : I nrecognizing tha t Federa l clas s I an d I I area s hav e AQU/s , whic h ar e mandate d unde r variou s statute s for preservatio nvlimpaired (e.g. . Organi c Act , Wildernes s Act) , EP Ai s proposing t o <l«l«te th e las t sentenc e ,i

n (o)(1 ) o f bothcurren t regulations
. Thes e clarification s shuul d hel p ensur e tha t permi t applicant s conside r al l potentia l impact s t o Clas s I an d I I are a AL>KVS . D . newsection , befor e " 7 *P . 343 , Inser t Clearinghouse" : Generi c Approache s t o Addres s An yAQR V Issu e l

r ormatio n

Th e NS RSubcommittee , ExistinqSource s Subgrou p discuss*< l severa l option s fo r addressing specifi c AQR V degradatio ni nClasj i I areas; . Th e group came t o consensu s onthe need t o enforc e exist,ng xule s requiring CI P revision s i ncase s wher e PS D incremen t exceedance s hav e bee n documented . I n particular , the grou p discusse c th e need L u enforc e existing requirement s fo r permitting authoTitle s t o trac k incremen t consumptio n cumulativel yfo r al l sources . Th e need fo r EP Aguidanc e on methodolog yfo r trackin

g emission s cu mlativel y an d periodicall yassessing incremen t consumptio nwa s reiounized
. Er Awil l endeavo r t

u provid e suchguidance
. Th e Existing Source s Subgrou p als o diccusce d supplementi m regulation s b

yadding a trigge r fo r ST P revisions , o r eve r o f regiona l implementatio n plans , t u addres s existinc impac t condition s Fo r AQRVs a t clas s I area s withi na p stat e o r region
. Althoug hFLM s an

d environmentt l grou p representative c pointe d ou t the merit s o f suchanapr t -oac hin ameliorating th e "existing source s problem " fo r AQRVs , n o qonsensu s o f th e ful l grou

p coul d b e reached on thi s option
. existing adoptio n advers e rticula r