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# OAR Box 1850 Prepped byOllie Stewart



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Number: 

# 77 ) IV-B- 7 Docket Number: 

# A-90-0 7

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# [mj UNITE O 8TATE S ENVIRONMENTA L PROTECTIO N AGENC Y WASHINGTON , D.C . 2046 0

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# 0 1 a r\ MA Y2 7 1994 

## UBEBBftBPCKE T. MEMORANDU M Subject :

From : Through : To : Revie wo f Notification s Submitte d Pursuan t t o 40 * CF R 7 9

fo r Complianc e wit hth e "Substantiall ySimilar " Rul e fo r . Unleade d Gasolin e j / ^^^<_^_ V Jame s W . Caldwell , Chief , Fuel s Sectio£ / $^6, ^T Davi d J . Kortum , Chief , fijCUMCJ Q- /^*>Z^CZ~-A

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r/iKy/fy Fiel d Operation s an d Complianc e Polic yBranc h Mar yT . Smith , Director , Fiel d Operation s and Suppor t Divisio n A t you r request , I hav e prepare d thi s summar yo f th e relatio n betwee n th e Agency' s administratio n o f th e registratio n progra mfo r fuel s an d fue l additive s and implementatio n o f th e statutor y prohibition s o n us e i n unleade d gasolin e o f fuel s and fue l additive s whic har e no t "substantiall ysimilar " t o certificatio n fuel . Initially , EPA' s offic e o f Researc hand Developmen t (ORD ) manage d th e registratio n activitie s associate d wit hth e sectio n 21 1 registratio n requirements . Afte r promulgatio n o f th e "Substantiall ySimilar " rule 1 i n 1981 , I worke d closel y(vi a telephone ) wit hOR D t o se e tha t unleade d gasoline s wer e no t registere d unles s the ycomplie d wit hth e rule . I reviewe d th e rul e carefull ywit hbot hth e OR D employe e and , later , th e contracto r wh o actuall yhandle d th e registratio n o f fuel s and additive s o n a day

to-da ybasis . I stresse d th e importanc e o f checkin g th e additive s liste d o n th e fue l manufacture r notificatio n form s t o ascertai n tha t n o additive s whic hdi d no t compl ywit hth e "substantiall y similar " definitio n wer e include d i n unleade d gasolin e registrations . Th e form s wer e reviewe d byEP Aand it s contractor s i n consultatio n wit hOR D chemist s and th e Fuel s Sectio n withi n th e Offic e o f Mobil e Sources . Whe n th e registratio n program(an d associate d contracto r activities ) wer e transferre d t o th e Fiel d Operation s an d Suppor t

1 Th e "substantiall ysimilar " rul e define d wha t wa s mean t byth e referenc e t o "substantiall ysimila r t o [certification ] fuel " i n sectio n 211(f)(1) . Fuel s and additive s no t substantiall y simila r t o certificatio n fuel s and additive s wer e prohibite d b y thi s section .

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- 2 - Division i n 1986 , I instituted an additiona l leve l o f review . Onc e th e contracto r ha d finished hi s review , I require d tha t each notificatio n als o b e reviewe d b ya technica l membe r o f th e Fuel s Section . I instructed eachmembe r o f m ystaf f wh o reviewed notification s t o chec k unleaded gasoline s fo r "substantiall y similar " compliance , i n addition t o the othe r requirement s se t fort hi n 4 0 CF R Par t 79 . Thi s involved , i n part , reviewing th e compositio n o f eac hadditive listed fo r us e i n unleade d gasolin e fo r complianc e wit hth e substantiall ysimila r rule . Manufacturer s wh o listed non-substantiall ysimila r additive s wer e called an d tol d tha t thei r unleade d gasoline s woul d no t b e registered . (N o letter s wer e sent. ) Th e reviewo f additive notification s wa s problemati c becaus e th e onl ydistinctio n on th e for mwa s whethe r th e additive wa s intende d fo r us e i n gasolin e o r diese l fuel . (Withth e exceptio n o f lead , additive us e wa s no t restricted fo r leaded gasoline. ) However , additive manufacturer s wer e generall ycalle d an d advised i f a gasolin e additive di d no t mee t th e substantiall ysimila r criteria . Theywer e als o advise d tha t restriction s o n sal e an d us e o f additive s whic hdi d no t mee t th e substantiall ysimila r criteri a applie d t o the bul k us e o f additive s i n unleaded gasoline , an d tha t th e restriction s di d no t appl yt o aftermarke t use . Th e lac k o f specifi c information o n th e forms regarding intended fue l us e wa s corrected whe n th e additive notificatio n for m wa s revise d i n Marc h1990 . Th e corrected for mrequire d the manufacture r t o specif yi f th e additive wa s fo r us e i n unleaded gasoline , leaded gasoline , and/o r diesel , an d whethe r i t wa s fo r bul k and/o r aftermarke t use . Thus , i f registratio n wa s requeste d fo r a bul k additive fo r unleade d gasoline , an d i f th e additive wa s no t substantiall ysimila r an d di d no t have a waiver , the manufacture r wa s called an d tol d tha t th e additive woul d no t b e registered . Th e Clean Ai r Ac t Amendment s o f 199 0 expanded the restriction s o f 211(f ) t o aftermarke t additives . Thus , afte r Novembe r 15 , 1990 , registration s fo r thes e additive s wer e als o reviewe d fo r complianc e wit hth e substantiall ysimila r rule . Th e onl yexception s sinc e enactmen t o f th e 199 0 Act , i n whic hnon-substantiall ysimila r additive s fo r us e i n unleade d gasolin e have bee n registered , hav e bee n lead-substitut e additive s fo r us e i n car s designe d fo r leaded gasoline . I n th e cas e o f thes e additives , th e manufacturer s wer e notifie d tha t th e additive s had t o b e markete d solel yfo r us e i n vehicle s manufacture d prio r t o the 197 5 mode l year .

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