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# OAR Box 1830 Prepped byOllie Stewart



### Document

Number: 

# 220 ) IV-C-18

7 Docket Number: 

# A-87-1 1

Printed 11/13/20087:21:03 AM Sheet 220of 232

### OEC0 6199 1 

## '&L-C-H7 Mr . Marvi nW

. Jackso n 513 3 Provincia lDriv el/y'iJA N/ fi J99 ? Bloomfiel d Hills , M I 4830 2 ; Dea r Mr . Jackson : LJ~ ^ ^> R T Thi s i s i n respons e t o you r lette r o f Octobe r 1 , 199 1 t o Presiden t Georg e H . Bus hregarding recen t action s b yth e Environmenta l Protectio n Agenc y(EPA ) . I n you r letter , yo u expresse d concer n regarding 1 ) us e o f ol d dat a fo r severa l area s i n EPA' s oxygenate d gasolin e programan d 2 ) continuing effort s b yEPA t o issu e regulation s fo r onboar d refueling vapo r recoverysystems . W e appreciat e you r interes t i n thes e tw o rulemakings . W e discusse d you r firs t concer n wit hEPA' s Fiel d Operation s an d Suppor t Divisio n i n Washington , D.C . an d foun d tha t EP Aplan s t o addres s thi s issu e i n a supplementa l Federa l Registe r notic e fo r th e oxygenate d gasolin e program . Adraf t o f tha t notic e contain s a footnot e explaining tha t th e Agenc yha s determine d tha t 198 8 an d 198 9 dat a from

severa l area s i s inadequat e t o properl ycharacteriz e th e ambien t concentration s o f CO . Therefore , fo r thos e area s - Boston , Cleveland , Seattle , an d Washingto n D.C . - olde r mor e representativ e dat a ha s bee n used . A s t o you r secon

d concern regarding EP Aeffort s t o issu e regulation s requiring onboard vapo r recoverysystems , w e not e tha t onboard control s ar e mandate d i n sectio n 202(a ) (6 ) o f th e Clean Ai r Ac t (CAA ) . Tha t decisio n wa s mad e b yCongres s an

d EP Amus t procee d wit hth e rulemaking proces s fo r onboar d control s a s require d b yth e CAA . A s par t o f thi s process , Congres s directe d th e EP At o consul t wit hth e Departmen t o f Transportatio n (DOT ) regarding onboard systemsafety . Thi s consultatio n i s wel l underway . Th e Nationa l Highwa yTraffi c Safet yAdministratio n (NHTSA ) , whic hi s par t o f th e DOT , release d a stud yo f onboar d systemsafet yi n Jul y1991 . W e hav e reviewe d thi s stud yan d hav e place d a cop yi n th e publi c docke t fo r thi s rulemaking . W e als o hel d a publi c hearing on Septembe r 26t hand 27t hi n orde r t o solici t comment s fromth e publi c on thi s issue . Writte n comment s wer e accepte d through Octobe r 27th . A s I' msur e yo u ar e aware , ther e ar e a numbe r o f commenter s wh o share d your concern s ove r onboar d safet yan d raise d th e merit s o f Stag e I I control s ove r onboard . W e ar e i n th e proces s o f makin g th e fina l determinatio n on ho wt o procee d wit h th e rul e base d o n DOT' s conclusion s regarding safet yrisk s o f onboard system s an d o n th e recor d develope d during th e commen t period .P. 3



### I

« • Than

k yo u agai n fo r you r letter . I t wil l b e include d i n the publi c docket . Pleas e fee l fre e t o contac t Do n Kopinsk i o f m y staf f a t (313 ) 668-422 9 i f yo u requir e an yadditiona l information . Sincerel yyours , Charle s L . Gray , Jr . Directo r Emissio n Contro l Technolog yDivisio n

cc : Publi c Docke t A-87-1 1