p. 1 

# OAR Box 1147 Prepped by Ollie Stewart



## Document

Number: 

# 127 ) IV-E-11 7 Docket Number: 

# A-87-1 1

Printed 4/23/2008 7:21:47AM

Sheet 127 of 242P. 2 A^lCrr/"fl



### Januar y 19 , 199 4 MEMORANDUM TO : Ai r Docke t A-87-1 1 FROM : Richar d D . Wilson , Directo r ff. £. /ffl*^^

Offic e o f Mobil e Source s Ly^" v SUBJECT : Meetin g wit h Aut o Industr y Regardin g Onboar d Refuelin g

Vapo r Recover y Rulemakin g O n Decembe r 29 , 199 3 EPAofficials , includin g Mar y Nichols , Assistan t Administrato r fo r Ai r an d Radiation , an

d Richar d Wilson , me t wit h representative s o f Genera l Motors , For d Moto r Co . and th e America n Automobil e Manufacturer s Associatio n t o discus s th e onboar d refuelin g vapo r recover y (ORVR ) rulemaking . Th e aut o industr y representative s discusse d a numbe r o f issue s relate d t o thi s rule . Thes e issue s ar e summarize d i n th e attache d pag e presente d t o EP Aa t th e meetin g b y th e aut o industry . Attachmen t Uj: 

# il i 

# G i 0 W 

# I ! p , HI;; ; . li !

'•• n-: / •;•-P. 3



### ONBOAR D REFUELIN

G VAPOR RECOVER Y Backgroun

d

• Sectio n 202(a)(6 ) o f th e Qea n Ai r Ac ti s limited t o passenger cars .
• NHTSA' s Jul

y 199 1 repor

tconclude d ORV R increase d th e safet

y risk o f vehicles .
• EP A issue d a final rul e o n Apri l 15,1992 , no trequirin

g ORV R base

d o n th e NHTS A repor t

• D. C CircuitCour

tremande d EPA' s decisio n no tt o promulgat e a n ORV R rul e i n Januar

y 1993 .
• NHTS A update

d thei r Jul

y 199 1 repor

tan d concluded tha

t"ther e stil l remain

s som e small unquantifiable increas e i n safet y ris k from th e additio n o f

th e ORV R systems, " an

d recommende

d tha tEP A no texpan

d ORV R t o truck

s atthi s tim e
• NHTS A als o conclude d tha t"a tthi s time , i tis impossibl e t o asse s all th e safet y aspect s o f ORV R requirement

s for LDTs , HDVs , an

d vehicle s powere

d b y fuel s othe r tha

n gasoline. "

• EP A i s aboutt o issu e a final rule covering LDVs , LDTs . an d HDVs . AAM A Recommendation s an d Discussio n
• Limi

tORV R t o federally-certifie d gasolin e fueled passenger car s ORV R tes tprocedur

e modification

s wer e develo p fo

r gasolin e fueled passenger car s
• • truck

s an d alternativ

e fuele d vehicle s wer

e no tconsidered du e t o timing/resourc e constraint s • • procedur

e modifications ma

y notallo w fo

r desig n o f integrated ORVR/EVA P syste m o n truck s Truck s generall y hav e mor e numerou

s fue l syste m configurations , large

r fue l tanks , a variet

y o f operatio n cycles an

d engin e purg

e parameters , an

d unique driv

e dow n provisions fo

r EVA P testin g Stag e I I wil l eliminat

e 75-85 % o f

tota l refueling an

d fue l spillag e VO C emission s b y 19 % in seriou s severe , an

d extreme area

s ORV R o n al l vehicle s wil l b e 5-15 % les s effective tha n Stag e I I an d wil l no treac

h it s pea k effectivenes s unti l mor

e tha n te n year s afte r Stag e I I has reached it s pea

k Extending ORV R requirement s t o LDTs an

d HDV s wil l increas e refuelin g emission s in Stag e I I area s due t o breathin

g losse s Incomplet

e vehicle s finished b

y second stage manufacturer s presen tspecia l problem s - OEM s canno tensure prope

r installatio n o f

ORV R systems o n thes e vehicle s Stag e I I i s a safe r alternative tha

n ORV R o n truck

s [NHSTA repor

t(Jur y 1991 ) mad

e thi s finding] CA A doe s no tmandat

e ORV R o n truck

s an d extendin g th e rul e t o truck s canno tb e supported b

y analysi s o f cost , energy , an

d safet y

• EPA need s t o perfor m safet y revie w befor e issuin g final rul e becaus e o f lead tim e constraint

s