P. 1


# OAR Box 1802 Prepped by Charmelle Mathews



### Document

Number: 

# 81 ) IV-E-7

5 Docket Number: 

# A-90-3 7

Printed 11/4/200811:58:00 AM

Sheet 81 of 117P. 2

>0-3 7 IV-E-7 5 Meetin g date : 5-23-0 1
Attendees : Chuc k Turner , VADE Q (clturner@deq.state.va.us ) Makeb a Morris , EPA
. Regio n II I Donn a Weiss , EPA , Regio n II I Lyn n Hutchinson , EP A Milto n Robinson , EP A Charle s Howland , EPA , Regio n III , Chri s Menen , EPA , Regio n II I Nei l Bigioni , EPA , Regio n II I Mari e Holman , EPA , Regio n II I Sharo n Baxter
. VADE Q (skbaxter@deq.state.va.us ) Monic a Gibson , EP A Te d Cochin , EP A
Meetin g Summary : Th e EP A hel d a teleconferenc e wit h representative s o f th e Departmen t o f Environmenta l Qualit yfo rth e Stat e of Virgini a (VADEQ ) t o discus s thei rpotentia l submissio n o f a n ECO S projec t dealin g wit h Ne w Sourc e Review
. Th e EP A believe s tha t VADEQ' s potentia l ECO S projec t i s verysimila ri n concep t t o th e Clea n Uni t Exclusio n tha t EP A intend s t o finaliz e a s part o f it s NS R refor m efforts
. Th e purpos e o f thi s meetin g wa s t o discus s th e curren t Agenc ythinkin g o n th e Clea n Uni t Exclusio n s o tha t th e VADE Q coul d decid e whethe rthe ywis h t o pursu e a Ne w Sourc e Revie w ECO S proposal
.P. 3

Meetin g date : 5-23-0 1
Attendees : Chuc k Turner , VADE Q (clturner@deq.state.va.us ) Makeb a Morris , EPA , Regio n II I Donn a Weiss , EPA , Regio n II I Lyn n Hutchinson , EP

A Milto n Robinson , EPA Charle s Howland , EPA , Regio n III , Chri s Menen , EPA , Regio n II I Nei l Bigioni , EPA , Regio n II I Mari e Holman , EPA , Regio n II I Sharo n Baxter , VADE Q (skbaxter@deq.state.va.us ) Monic a Gibson , EPA Te d Cochin , EPA
Meetin g Summary : Th e EP A hel d a teleconferenc e wit h representative s o f th e Departmen t o f Environmenta l Qualit yfo rth e Stat e o f Virgini a (VADEQ ) t o discus s thei rpotentia l submissio n o f a n ECO S projec t dealin g wit h Ne w Sourc e Review
. Th e EP

A believe s tha t VADEQ' s potentia l ECO S projec t i s ver ysimila ri n concep t t o th e Clea n Uni t Exclusio n tha t EPA intend s t o finaliz e a s par t o f it s NS R refor m efforts
. Th e purpos e o f thi s meetin g wa s t o discus s th e curren t Agenc ythinkin g o n th e Clea n Uni t Exclusio n s o tha t th e VADE Q coul d decid e whethe r the ywis h t o pursu e a Ne w Sourc e Revie w ECO S proposal
.P. 4

D o No t Cit e o r Quot e - No t

Fina l Agenc y Positio n 

## Clea n Uni t Fac t Sheet Ther e woul db e atw o ste p proces s for determinin g i f

auni t i s clean
. First , th e uni t

wouldg o throug h th e appropriat e majo r sourc e (o r

minor ) NS Rproces s (BACT/LAER , ambien t impact s analysis , Clas s I impacts)
. Then , th e outcom e wouldb e compare dt o othe r source s i n th e RBLC
.

- Fo r aunit i n a n attainmen

t are ato b e deemedclean , it mus t be within 90 % i

f the bes t BACT fo r asimila r soruc e i n the RBLC
.

- For aunit i n anonattainmen

t are at o b e deemedclean , i

t mus t be a t leas t a s stringent

a s the bes t LAE Rlimit fo r asimila r sourc e i n the RBLC
. 

### A uni t goin g throug h mino r

NS Rrevie w coul dqualif y fo r a s clea n uni t

i f th e mino r NS Rprogra mha s atechnolog y revie w componen t an dambien t impac t analysis , an dassure s n o impac t o n AQRVs
. Th e exclusio n woul db e effectiv e for 1 0 year s fromissuanc e o f th e NS R permit
. (Regardles s o f

whe n th e uni t

i s actuall y deeme dclean. ) Afte r 1 0 years , th e uni t

coul dunderg o ane w clea n uni t analysi s with ane w ambien t impact s analysi s an dre-qualif y for th e exclusion , i f

appropriate
. Th e exclusio n woul d no tappl y i f th e uni t increase s i s maximu mhourl y emission s rat e (usin g th e NSP S test ) o r intend s t o operat e abov e it s permitte dallowabl e emissio n rat e du e t o aphysica l o r operationa l change
. Thus , althoug h w e cal l thi s an "exclusion " i t i s functionall y equivalen t t o changin g th e applicabilit y tes t fro macurren t

maximu mhourl y t o future maximu mhourl y emissio n calculation
. Th e exclusio n woul dexpir e i f th e uni t doe s no t begi n constructio n withi n 1 8 month s after

th e NS Rpermi t

i s issued
. Th e uni t

woul dhav e t o g o throug h th e proces s agai n t o re-qualif y for th e ne w exclusion
. Th e reques t

for aclea n uni t

exclusio n mus t

underg o publi c revie w throug h eithe r th e majo r

NS Ro r Titl e V permi t

process . Th e issu e a s t o whethe r

th e "clea n unit " exclusio n shoul dappl y whe n BACT/LAE Ri s determine dt o b e n o contro l i s stil l bein g discusse dwithi n th e Agency
.P. 5

D o Not Cit e o r Quot e - Not Fina l Agency Position CLEA N UNI T TES T WORKSHEE T (1 ) Calculat e th e PT E i n ton s pe r yea r ofth e uni t

with th e curren t

controls
. (2 ) Calculat e th e PT E i n ton s pe r yea r ofth e uni t

withou tth e curren t

controls
. (3 ) Calculat e th e PT E i n ton s pe r yea r ofth e uni t

wit h th e "bes t

controls"
. (4 ) Subtrac t

lin e (1 ) fromlin e (2 ) (5 ) Subtrac t

lin e (3 ) fromlin e (2 ) (6 ) Divid e lin e (4 ) b y lin e (5 ) an dmultipl y b y 10 0 % Check one of the following: Th e numbe r

o n lin e (6 ) i s 90 % o r

greater , th e uni tqualifie s as a"clea n unit " Th e numbe r

o n lin e (6 ) i s les s than 90% , th e uni tdoe s no tqualify .
CLEA N UNI T TES T - EXAMPL E CALCULATIO N 1 (i n ton s pe ryear ) (1 ) Calculat e th e potentia l t o emi t ofth e uni t

with th e curren t

controls
. 19 0 (2 ) Calculat e th e potentia l t o emi t ofth e uni t

withou tth e curren t

controls
. 100 0 (3 ) Calculat e th e potentia l t o emi t ofth e uni t

wit h th e "bes tcontrols"* . 10 0 (4 ) Subtrac t

lin e (1 ) fro mlin e (2 ) 81 0 (5 ) Subtrac t

lin e (3 ) fro mlin e (2 ) 90 0 (6 ) Divid e lin e (4 ) b y lin e (5 ) an dmultipl y b y 10 0 9 0 % Check one of the following: Th e numbe r

o n lin e (6 ) i s 90 % o r

greater , th e uni tqualifie s as a"clea n unit " X Th e numbe r

o n lin e (6 ) i s les s than 90% , th e uni tdoe s no tqualify . _P. 6

BS^Fjr j D o No t Cit e o r Quot e - Not Fina l Agency Position


### CLEA N UNI T TES T - EXAMPL

E CALCULATION 2 (in tons pe ryear) (1 ) Calculat

e the potentia

l to emit ofth e unit

wit h th e curren

t controls
. 30 0 (2 ) Calculat

e th e potentia l to emi t ofth e unit

withoutthe curren

t controls
. 1000 (3 ) Calculat

e the potentia

l t o emi t ofth e unit

wit h the "bes tcontrols"* . 10 0 (4 ) Subtract

line (1 ) fromlin e (2 ) 70 0 (5 ) Subtract

lin e (3 ) fromlin e (2 ) 90 0 (6 ) Divid e line (4 ) b y line (5 ) an

dmultiply by 10

0 7 8 % Check one of the following: The numbe

r o n lin e (6 ) i s 90 % o

r greater , th e unitqualifies a s a "clea n unit " The numbe

r on lin e (6 ) i s les s tha

n 90% , th e unitdoes notqualify . X