# OAR Box 

# 1834

Prepped byKeeiaRichards



### Document

Number: 

# 38 ) IV-E-1 1 Docket Number: 

# A-90-0 7

Printed 11/10/20082:14:35PM Sheet 38of 61P. 2

ftm 

# i.-10-Ol i 9 UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENC YW. j£- \ | AN N ARBOR

. MICHIGA N 4810 5



### AP R 

## 2 8 1994 OFFIC E O F AI R AN D RADIATIO N



### •"• * DOCKE T MEMORANDU M SUBJECT :
FROM :
THRU :
TO : Conversation s wit hRepresentative s o f th e

America nPetroleu mInstitut e (API ) Judit hGray , Senio r Projec t Manage r Specia l Regulator yProject s Branc h Glen nW . Passavant , Chie f Specia l Regulator yProject s Branc h Ai r Docke t A-90-0 7 O nApri l 14 , 1994 , I calle dMs . Anit a Ducc a o f API . t o as k fo r clarificatio no f tw o item s containe di nAPI' s writte ncomment s (Docke t Ite mIV-D-49 ) o nth e Notic e o f Reopenin g o f Commen t Perio d fo r th e Fuel s an d Fue l Additive s (F/FA ) Registratio nProgra m(5 9 F R 8886 , Februar y24 , 1994 ) . Mytw o question s were : 1 ) Wha t i s th e sourc e o f th e "Nomina l Diese l Bas e Fue l Tes t Properties " displaye di nth e tabl e o npag e 2 2 o f API' s comments ? an d 2 ) Wha t documentatio no r sourc e o f additiona l informatio nmigh t b e availabl e abou t "EPA' s surrogat e mixtur e t o simulat e evaporativ e emissions, " reference do npag e 1 3 o f th e comments ? Ms . Ducc a sai dsh e woul dsee k answer s t o thes e question s an d woul d ge t bac k t o m e i na fe wdays . Sh e als o aske d i f I coul d confir mtha t th e deadlin e fo r promulgatio no f th e rul e ha d bee nextended . I confirme d tha t agreemen t ha dbee nreache d wit hth e plaintif f t o exten d th e deadlin e fo r fou r weeks , t o Ma y 27 , 1994 . O nApri l 15 , 1994 , Ms . Ducc a calle dt o tel l m e tha t sh e wa s stil l attemptin g t o reac hth e individual s wh o coul dbes t answe r my questions . Regardin g th e bas e fue l specification s propose di nth e F RNotice , sh e questione dth e nee d fo r th e specifie dblendin g tolerances , suggestin g tha t targe t value s withou t anyspecifie d tolerance s ough t t o b e sufficient . I replie dthat , unles s som e limitation s wer e included , targe t value s alon e woul dno t b e meaningful . I als o mentione dtha t th e propose dbas e fue l blendin g tolerance s wer e intende d t o b e consisten t wit hthos e use di n conjunctio nwit hth e Reformulate d Gasolin e (RFG ) program .P. 3



### OnApri l 19 , 1994 , Ms . Ducc a an d Dr . Rober t Dre wcalle d me . Theyclarifie d tha t th e referenc e i nAPI' s comment s t o "EPA' s surrogat e mixture " fo r evaporativ e emission s wa s no t intende d t o infe r tha t ther e ar e existing EP Aspecification s fo r suc ha mixture . Rather , th e commen t wa s intende d t o sugges t API' s alternativ e approac hfo r generating evaporative-lik e emission s fo r us e i nth e F/F

Atesting program . Dr . Dre wsai d tha t AP I wa s currentl ydeveloping a tes t protoco l tha t migh t incorporat e th e suggeste d approach , bu t coul d no t shar e i t wit hEP Aa t thi s time . I agree d t o conside r th e suggeste d approac hfurther . I als o mentione d t o Ms . Ducc a tha t w e ha d reviewe d th e gasolin e bas e fue l specification s propose d fo r th e F/F Aprogram , an

d wer e planning t o adjus t some o f th e tolerance s whic hha d inadvertentl ybee nse t t o equa l th e measuremen t tolerance s rathe r tha nth e blending tolerance s o f th e RF Grule .