p. 1 

# OAR Box 1830 Prepped by Ollie Stewart



### Document

Number: 

# 146 ) IV-C-11 3 Docket Number: 

# A-87-1 1

Printed 11/13/2008 7:20:59 AM Sheet 146 of 232P. 2 UNITED STATE

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### MA R2 3 

### 1988

Honorabl e Harri s VJ . Fawel l Hous e o f

Representative s Vfashington , D

C 2051 5 Dea r Mr . Fawell : Thi s i s in respons e t o you r Marc h 1 , 198 8 lette r expressinqth e concern s o f you r constituent s regarding the EP A rulemaking proposal s t o contro l the volatilit yo f summe r gasolin e an

d t o requir e onboard canister s on newvehicle s t o contro l refueling emissions . In particula r yo u wer e intereste d in th e cost s an

d benefit s associate d wit h eac h progra man d the statu s o f EPAplan s t o implemen t suc h controls . I n Augus t 1987 , EPArelease d thes e two propose d rulemaking s an

d I have include d the Federa l Registe r Notice s o f Propose d Rulemaking (NPRM ) fo r you r information . Bot h proposal s wer e base d o n a n in-dept h analysi s o f man yissues . Sectio n E (page s 31177-31182 ) o f th e refuelin g NPR M explain s our overal l rational e for proposing onboard control s ove r Stag e I I controls . Specifically , Table s 3 an d 5 presen t th e emissio n reductions , cost , an d cos t effectivenes s o f onboard an d Stag e I I control s unde r th e differen t assumption s fo r benefit s an

d thei r value . W e believ e tha t contro l o f gasolin e volatilit yduring the summe r i s a cost-effectiv e progra myielding a larg e reductio n i n hydrocarbo n emissions . Sectio n D (page s 31282-31292 ) o f th e volatilit yNPR

M explain s our overal l rational e fo r proposing gasolin e volatilit ycontrols . Thi s sectio n present s th e emissio n reductions , cost , an d cost-effectivenes s o f volatilit y control s fo r th e variou s scenario s examine d in th e analysis .^t-Ofc-ivtLL ) ENVIRONMENTA L PROTECTIO N

AGENC V MA Y2 0 I9CL " CENTRA L DOCKE T SECT/O N

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- 2 - Regarding th e statu s o f EPA' s plan s t o implemen t th e onboard an

d gasolin e volatilit ycontro l rules , w e ar e no wi n the proces s o f reviewin g the comment s receive d during th e publi c commen t perio d whic h cam e t o a clos e February11 , 1988 . I n th e nea r futur e w e wil l updat e ou r safet yanalysi a o f th e onboard proposa l in respons e t o th e comment s receive d an d provid e the revise d analysi s t o th e Departmen t o f Transportatio n (DOT) . Afte r w e receiv e DOT' S comments , we wil l repropos e the refuelin g rul e fo r publi c comment . Fina l rulemakin

g o n bot h the refueling an d volatilit ycontro l proposal s wil l be subsequen t t o th e reproposa l o f th e refueling rule . Than k yo u fo r you r interes t i n bot h o f thes e proposals . I f yo u hav e furthe r question s o n eithe r o f th e proposal s pleas e contac t Phi l Carlso n o f the Standard s Developmen t an d Suppor t Branc h o f th e Emissio n Contro l TechnologyDivision , 256 5 Plymout h Road , An

n Arbor , M I 4810 5 (FT S 374-827 0 o r Commercia l (313 ) 668-4270) . Your lette r wil l be place d i n th e publi c docket s fo r th e rulemakings . Sincerel yyours ,

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Tf.>T-T > 5 Y DONAL D Z. Z~<"i«C'~r\ Richard D . Wilso n Director , Offic e o f Mobil e Source s Enclosure s cc : Docke t A-87-1 1 Docke t A-85-2 1