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# OAR Box 

# 1165 Prepped by Ollie Stewart



# Document

Number: 

# 256 ) F

. R

. Novembe r18 , 199 6 Docket Number: 

# A-90-0 7

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Protectio n Agenc y 4 0 CFR Part s 7 9 an d 8 0 Regulatio n o f Fuel s an d Fue l Additives : Mino rRevisions ; Fina l Rul eP. 3

5874 4 Federa l Registe r / Vol
. 61 , No
. 22 3 / Monday , Novembe r 18 , 199 6 /Rule s an dRegulation s ENVIRONMENTA L PROTECTIO N AGENC Y 4 0 CF R Part s 7 9 an d 8 0 [FRI.-565I-3 ] Regulatio n o fFuel s an d Fue l Additives : Mino r Revision s AGENCY : Environmenta l Protectio n Agenc y (EPA)
. ACTION : Direc t fina l rule
. locate da t di e U.S
. Environmenta l N
. Protectio nAgency , Ai r Docke t Sectio n £(LE-131) , 40 1 M Street , S.W. , Washington , D C 2046 0 i nRoo mM-150 0 o f Watersid e Mall
. Document s ma y b e inspecte dbetwee nth e hour s o f 8:0 0 a.m . an d5:3 0 p.m. , Monda y diroug h Friday
. A reasonabl e fe e ma y b e charge d fo r copying
. Thos e wishin g t o notif y

, EP A o f

thei r inten t t o submi t

a nadvers e ^fs ^ commen t

o r reques t apubli c hearin g ' shoul dcontac t

Jef f Herzo g (313 ) 668

-
„,,.....„ „ _. , ,"."
. * ?
. . • 4227 , U.S
. EPA , Offic e o f Mobil e SUMMARY

: Th e purpos e o f

thi s actio ni s r»» ~ j , , . - „ . ... , . vr . , ' :. V^Sources , Fuel s an dEnerg y Division , t o mak e mino r

revisions an dcorrections ^
___ _„. '
. , _, . OJ

. , .. . . affectin e recentlv-nromulgate drule s ^ 256 5 pl y mout hRd

- An n^ boT ' m attectin g recentl y promulgate drules
. . . . ( ^ l dJ J (2fJ2 ) 2 33-9303 , First , aregulatory prov 1S io n include dih f - ^ ^ o f Mob . , e^^
. ^ ^ [ par t 79 ) sufficien t schedulin g flexibilit y whe n\FO RFURTHE RINFORMATIO

NCONTACT

: Fo r tes t laboratorie s encounte r technica l -^ Linformatio nrelate dt o th e registratio no f problems
. Second , aprovisio n^-V,fuel s an dfue l additive s unde r 4 0 CF R inadvertentl y omitte dfro mbot hth e par t 79 , contact : Josep hFemande s (202 ) Interi mDetergen t

Progra man dth e 233-975 6 o r Jame s W
. Caldwel l (202 ) Detergen t

Certificatio nProgra mi s adde d233-9303 , U.S
. EPA , Offic e o f Mobil e t o th e regulations (a t

4 0 CF Rpar t

80)
. Th e ne w provisio nwil l allo w a detergen t

additiv e manufacture r t o appl y on e se t

o f performanc e demonstratio ntest s t o multipl e detergen t

additiv e product s containin g th e sam e activ e ingredients
. Finally , a regulator y numberin g erro r an da syntactica l erro r

affectin g th e Detergen t Certificatio nrul e ar e corrected
. Thes e change s ar e bein g implemente d withou t prio r notic e becaus e EP A believe s tha t

the y ar e no t

controversial
. Bot ho f th e affecte dprogram s serv e di e publi c healt han denvironmenta l protectio ngoal s o f

th e Clea nAi r

Ac t (CAA)
. Th e detergen t

certificatio n progra mi s intende dt o ensure.th e emissio nreductio nan dfue l efficienc y benefit s o f

gasolin e detergen t

additives
. Th e fue l an dfue l additiv e (F/FA ) healt h effect s testin g progra mi s designe dt o determin e i f

di e emission s o f

certai n gasolin e o r

diese l F/FA s presen t

a n unacceptabl e ris k

t o di e publi c health
. Th e correction s implemente db y today' s actio nwil l facilitat e attainmen t o f thes e progra mobjective s b y simplifying'th e regulatory requirement s whic hmigh t otherwis e pertai nt o som e regulate d parties
. DATES : Thi s actio nwil l b e effectiv e o n Januar y 17,199 7 unles s EP A receives a n advers e commen t

o r areques t

fo r a pnhli rhparinr

j h v ner;emhe r18 f

1996 . I f EP A receive s a n advers e commen t o r hearin g request

b y tha t date , EP A wil l publis htimely notic e i ndi e Federa l Registe r withdrawin g thi s rule
. ADDRESSES : Material s relevan t t o thi s rulemakin g hav e bee nplace di nDocket s A-90-0 7 an dA-91-77
. Th e docket s ar e Sources , Fuel s an dEnerg y Division , Mai l Cod e 6406J , 40 1 M Street , SW. , Washington , D C 20460
. Fo r informatio n relate dt o detergen t

additiv e certificatio nunde r

4 0 CFRpar t

80 , contact : Jeffre y A
. Herzog , U.S
. EPA
. (FED) , Offic e o f

Mobil e Sources , Fuel s an dEnerg y Division , 256 5 Plymout h Road,-An n Arbor , M I 48105
. SUPPLEMENTAR

YINFORMATION : I
. Regulate dEntitie s Regulate dcategorie s an dentitie s potentiall y affecte db y thi s actio n include : Category Industr y Example s o f regulate d entitie s Manufacturer s of gasolin e an d diese l fuel

. Manufacturer s of additive s fo r gasolin e an d diese l fuel. ' Thi s tabl e i s no t

intende dt o b e

. exhaustive , bu t

rathe r provides" aguid e fo r reader s regardin g entitie s likel y t o b e regulate db y thi s action
. Thi s tabl e list s th e type s o f

entitie s dia t

EP A i s now . awar e coul dpotentiall y b e regulate db y thi s action
. Othe r

type s o f entitie s no t liste di nth e tabl e coul dals o b e regulated. T o determin e whethe r you r entit y woul db e affecte db y dii s actibn , ' yo u shoul dcarefull y examin e thi s preambl e an dth e propose dchange s to . ; th e regulatory text . Yo u shoul dals o carefull y examin e th e existin g provision s o f

di e Fuel s an dFue l Additive s Registratio nProgra ma t 4 0 CF Rpar t 79an dth e Detergen t Certificatio nProgra ma t 4 0 CFRpar t

80
. II
. F/F A Healt hEffect s Testin g Progra m Correctio n A. Background I naccordanc e wit hCA A section s 21 1 (a ) an d(b)(1) , EP A issued , i n1975 , basi c registratio nrequirements applicabl e t o gasolin e an ddiese l fuel s an dthei r additives
. Thes e regulation s requir e manufacturer s t o submi t informatio no h thei r F/F A product s (e.g. , commercia l identity , chemica l composition , purpose-in-use , an drecommende d rang e o f concentration ) i norde r t o hav e suc hproduct s registeredb y EP A an dt o b e permitte dt o marke t the mi nth e U.S
. Additiona l registratio nrequirements , implementin g section s 21 1 (b)(2 ) an d (e) , wer e finalizedo nMa y 27,199 4 (5 9 F R33042 , Jun e 27,1994)
. Thes e regulation s requir e manufacturers , a s par t o f tiieir F/F A registration responsibilities, t o conduc t test s an d submi t informatio no nth e healt heffect s o f thei r F/F A products
. Organize d withi nathree-tie r

structure , th e requirements includ e detaile demission s analysis , literatur e search , an d toxicologi c studie s involvin g di e exposur e o f

laborator y animal s t o F/FA
. emissions
. O nJul y 11,1996 , EP A publishe dtw o additiona l Federa l Registe r notice s concernin g th e F/F A registratio nan d healt heffect s testin g requirements
. On e wa s aNotic e o f

Propose dRulemakin g (6 1 F R36535 ) requestin g publi c commen t

o npropose dchange s designe d t o clarif y an dstreamlin e avariet y o f organizational , technical , an drecor d keepin g provision s o f

th e program . Th e secon dnotic e (6 1 F R36506 ) wa s a- direc t fina l rul e which , i ndi e absenc e o f advers e publi c commen t prio r t o Augus t 12,1996 , implemente dsevera l other , relativel y mino r technica l changes
. On e o f th e regulatory section s affecte d b y th e direc t

final rul e was. § 79.61(d)(5) , whic hcontain s genera l rule s governin g exposur e interruption s durin g toxicologi c studies
. I nchangin g dii s section , th e inten t

wa s t o clarif

y th e rule' s languag e an dt o mak e th e exposur e interruptio nrule s mor e consisten t

wit hcustomar y laborator y practices
. EP A wishe dt o allo w reasonable flexibilit y i ndi e schedulin g . an dconduc t

o f thes e comple x studies
. O nth e otiie r

hand , EPA' s interes t

i ndi e relative toxicit y o f

differen t F/FA s dictate dtha t

controllabl e source s of
. variabilit y betwee ntest s an dtes t lab s shoul db e minimized
. Thus , a s discusse di nth e preambl e t o th e rule , EP A expressl y intende dno t t o includ e allowance s fo r

Federa l holiday s i nth e exposur e rules
. I t

wa s fo r thi s reaso n tha t th e revisedlanguag e include dth e_E 4
FeieirklilRegiste r

/ * Vol;61,iNo
. 22 3 7 Monday , Novembe r 18 , 199 6 /Rule s and^.Regulatiohs- : 587-11^ * constrain t

tha t "N o mor e tha ntw o non exposur e day s ma y occu r consecutivel y durin g th e exposur e period , includin g day s o nwhic hdi e minimu mexposur e tim e ha s no t

bee nmet. " Toxicologi c studie s whic hdi dno t

compl y wit hthi s rul e woul db e considere dvoid
. B. Today's Action EP A no w realizes that , a s revised, di e exposur e rule s ar e considerabl y mor e stringen t tha nintended
. Whil e th e prohibitio n agains t

thre e consecutiv e non-exposur e day s doe s effectivel y disallo w holiday.downtime , i t ma y also ' unreasonabl y penaliz e tester s wh o unintentionall y mis s atiiir dconsecutiv e exposur e da y du e t o technica l - - • - difficulties
. Thi s migh t occur , fo r example , i f

unexpecte dequipmen t problem s ar e encountere do naMonda y afte r a nordinar y two-da y weeken doff
. A s currentl y written , th e rul e doe s no t provid e awa y t o remedy suc h occurrences . Thus , studie s whic har e otherwis e acceptabl e coul dbecom e voi d unnecessarily , an dlarge , financial expenditure s fo r

repeat testin g migh t

b e incurred
. Th e revision s finalizedtoda y wil l preven t thes e unintende dresults
. Th e ne w versio nstil l specifie s tha t thre e consecutiv e non-exposur e day s ar e normall y no t

permitted
. However , i f a tiiirdconsecutiv e da y i s misse ddu e t o circumstance s beyon dth e tester' s control , di e rul e provide s tha t i t ma y b e cure db y addin g asupplementar y exposur e da y a t

th e nex t availabl e opportunit y or , i f

necessary , a t

th e en d o f th e standar dtes t

period
. Thes e mechanism s shoul dfurnis hth e schedulin g flexibilit y neede dt o addres s equipmen t

an dothe r

technica l problem s whic haris e durin g di e conduc t o f laborator y studies
. Nevertheless , sufficien t

regulatory control s ar e . retainedt o encourag e good-fait heffort s t o adher e t o regular, tes t schedules , technica l procedures , an deffectiv e preventiv e maintenanc e practices
. I t shoul db e note ddiat , i ninstance s wher e th e exposur e requirement s o f a specifi c tes t

protoco l diffe r

fro mth e genera l exposur e guideline s finalize d today , tiienth e requirement s o f th e specifi c tes t

protoco l tak e precedence
. Fo r example , th e genera l exposur e guideline s d o no t

affec t th e exposure . timing requiremen t

specifie di n.

- § 79.63(e)(4)(iii ) o f

di e fertilit y assessment-teratolog y guideline , which , state s tha t

pregnan t

anima l subject s

. "shal l b e expose dt o th e tes t atmospher e o neach-an dever y da y betwee n(an d

. including ) th e first

an dfifteendi da y o f gestation. " HI
. Detergen t Additiv e Progra m Correctio n A. Background Th e fina l rul e establishin g th e Detergen t

Certificatio nProgra mwa s publishe dJul y 5,199 6 (6 1 F R35309)
. Th e certificatio nrul e modified , an dwil l late r supersede, 1 th e existin g Interi m Detergen t

Program , whic hwa s publishe dOctober.14,199 4 (5 9 F R 54678 ) an dbecam e effectiv e Januar y 1 , 1995
. Thes e rule s wer e promulgate di n complianc e wit hCA A sectio n211(1) , whic hrequire s al l gasolin e sol do r transferre dt o th e consume r beginnin g Januar y 1,199 5 t o contai nadditive s preventin g th e accumulatio no f deposit s i nengine s o r

fue l suppl y systems . Th e .CA A charge dEP A wit hdi e tas k o f establishin g specification s fo r suc h- detergen t additives
. Th e interi mdetergen t

progra m requires virtuall y al l gasolin e use db y di e consume r

t o contai neffectiv e detergen t additive s fo r

th e contro l o f por t fue l injecto r

deposit s (PFED ) an d intak e valv e deposit s (IVD)
. However , th e interi mprogra mdoe s no t includ e specifi c performanc e test s an dstandard s for th e additives
. I ncontrast , th e detergen t certificatio nprogra mrequire s manufacturer s t o conduc t specifi c vehicle-base dperformanc e tests , usin g industry-standar dtes t

procedure s an d specifie dtes t

fuels , t o demonstrat e th e effectiv e contro l o f

IV D an dPFID
. Thes e certificatio ntest s ar e th e basi s fo r determinin g th e minimu m. concentratio na t

whic hadetergen t additiv e ca nb e use di ngasolin e (i.e. , th e lowes t

additiv e concentratio no r LAC)
. B. Today's Actions 1
. Multipl e Version s o f

Detergen t Package s . ' Detergen t

additiv e manufacturer s commonl y produc e an dmarke t (an d thu s mus t

registe r unde r 4 0 CF Rpar t

79 ) anumbe r

o f commercia l additiv e product s containin g th e sam e detergent

activ e ingredient(s ) a t

differen t concentrations
. EP A understand s dia t thi s i s anorma l busines s practice , an d doe s no t believ e i t

i s necessar y o r desirabl e t o requir e th e effectivenes s o f eac hsuc hproduc t

varian t t o b e demonstrate di n separat e certificatio n tests . A s EP A state di nti e preambl e t o th e interi mdetergen t

rule :

. EP A agree s tha t

separat e performanc e test s shoul dno t

b e neede dfo r

multipl e detergen t additiv e package s whic hcontai nth e sam e
1 Ingeneral , th e requirement s o f th e certificatio n progra mbecom e mandator

y fo r detergentjidditiv e manufacturer s an dblender s o n July 1,199 7 an dfo r gasolin e retailers o nAugus t 1,1997
. activ e detergen t ingredient s i ndifferent

• - concentrations , provide dtha t th e minimu m recommende dtreat

rate specifie di nth e registratio ninformatio nfo r eac hadditiv e packag e properl y account s fo r th e variation s i nconcentration
. Specifically , fo r eac h registere ddetergen t

packag e whic hth e manufacture r

intend s t o suppor t

witha singl e set o f tes t data , th e final concentratio n of activ e detergen t

ingredient s (resultin g whe nth e detergen t

packag e i s adde dt o gasolin e a t it s respectiv e minimu m recommende dtreat

rate ) mus t

b e n o les s tha n th e minimu mconcentration s show nt o hi e effectiv e by'th e testin g • *
.• [SJeparate supportin g dat aar e neede donl y .i f th e actua l chemica l identit y o

f a nactiv e detergen t ingredien t

i s changed
. (5 9 F

R54688-89 ) Thus , i t ha s no t bee nEPA' s inten t

t o require duplicativ e certificatio ntestin g fo r differen t version s o f

aparticula r detergen t

additiv e package
. Throug ha n oversight , however , aregulator y provisio nt o codif

y thi s principle'wa s no t include di nth e interi mdetergen t progra mregulations, no r di dsuc ha provisio nappea r

i ndi e final certificatio nprogra mregulations
. Today' s actio ncorrect s dies e unintentiona l oversight s b y addin g ne w regulatory tex t

a t § 80.141(c)(3)(v ) an d § 80.161(b)(l)(ii)(D)
. Th e ne w regulator y provision s permi t

adetergen t

additiv e manufacture r

t o appl y on e se t

o f performanc e dat at o multipl e detergen t additiv e product s containin g di e sam e activ e ingredients , provide dtha t th e minimu mrecommendedconcentratio n o r LA C recorde dfo r

eac hproduc t

i s adjuste daccordingly
. 2
. Typographica l Correction s Th e Federa l Registe r

documen t whic hpublishe dth e detergen t certificatio nfinal rul e (6 1 F R35309 ) containe danumberin g erro r affectin g a regulator y provision
. Specifically , di e provisio no n"Procedure s fo r curin g us e restrictions, " whic hshoul dhav e bee n labele da s paragrap h(9 ) (nine ) i n § 80.169(c) , wa s mistakenl y labele das . . paragrap h(g ) i n§80.169
. I nth e sam e paragraph , areference t o "thi s , paragrap h(g) " shoul dhav e referredt o "thi s paragrap h(c)(9)"
. I naddition , th e titl e o f di e paragraph-shoul dhav e appeare di nitali c ratiie r tha nregula r typ e font
. Thes e error s ar e correcte di n thi s direc t

final rule
. Finally , asyntactica l erro r wa s mad e i n§ 80.172(e) , whic hconcern s penaltie s relate dt o non-conformit y wid i th e • ; produc t transfe r documen t

requirements o f di e detergen t

certificatio nprogram . I n paragrap h(2 ) o f

thi s section , ther e i s a n erroneou s reference t o "gasolin e no t . - additize di nconformit y wid i interi m detergen t

progra mrequirements," rathe r tha naprope r

referenc e t o "gasolin e no t additize di nconformit y wit hdetergen tP. 5

$;•.; * a^-n
. >-.;• ' 5?'^.^*y^v^«^^B^^^^^/;*-:.- v '.'•,: ; :-:i^*': ''.'y.-'-.- '



### ' 15874 6 •^•F^errfi'Sa^i^^fVol.--61,-N a22 3 / Monday , November

18 , 199 6 /

Rule s an dRegulation s certificatio n prograr hrequirefnehts. " Thi s erro r

i s correcte dii i thi s direc t final rule
. IV
. Administrativ e Requirement s A. Administrative Designation and Regulatory Analysis Unde r Executiv e Orde r

1286 6 (5 8 FR 51735 , Oct
. 4,1993) , th e Agenc y mus t determin e whethe r

dii s regulatory actio ni s "significant " an dtherefor e subjectt o OM B reyiewandth e requirements o f

th e Executiv e Order
. Th e orde r

define s "significan t

. . regulator y action'

- a s an y regulator y actio ntha t

i s likel y t o resul t

i narul e tha tmay : -•- ••. ^S^-^ksx it*; (1 ) Hav e a nannua l effec t o n th e . econom y o f

$10 0 million.o r

mor e o r adversel y affec t

i namateria l wa y th e economy , asecto r

o f di e economy , productivity , competition , jobs , th e environment , publi c healt ho r safety , o r State , local , o r

triba l government s o r communities ; (2 ) Creat e aseriou s inconsistenc y o r otherwis e interfer e wid i a nactio ntake n o r planne db y anothe r

ajgency ; (3 ) Materiall y alte r

th e budgetar y impac t o f entitlements , grants , use r fees , o r loa nprogram s o r

th e right s an d
' obligation s o f

recipient s thereof ; or , (4 ) Rais e nove l lega l o r polic y issue s arisin g ou t

o f lega l mandates , th e President' s priorities , O r th e principle s se t fort hi nth e Executiv e Order
. Pursuan t t o th e term s o f

Executiv e Orde r 12866 , EP A ha s determine dtha t thi s direc t

final rul e i s no t

a"significan t regulator y action"
. Th e regulator y correction s include di nthi s notic e wil l resul t i nreductio no f

potentia l testin g cost s an drelatedcomplianc e burdens
. B. Regulatory Flexibility Analysis EP A ha s determine dtha t i t i s no t necessar y t o prepar e aregulatory flexibilit y analysi s ii i connectio nwit h thi s direc t

final rule
. EP A ha s determine dtha t

thi s rul e Wil l riot

hav e asignifican t

advers e economi c impac t o nasubstantia l numbe r o f smal l businesses
. O nth e cohtraiy , th e correction s implemente db y tins rul e wil l simplify complianc e an dreduc e potentia l testin g requirement s fo r al l affecte dparties. '
. '
. . C. Paperwork

Reduction Act Th e PaperworkReductio n Ac t o f 1980 , 4 4 U.S.C
. 350 1 e t seq/an d implementin g regulations , 5 CFRPart

1320 , d o no t

appl y fothi s actio na s i t doe s no t involv e di e collection ' o f informatio na s define ddierein.-
. D. Unfunded

Mandates Reform Act Unde r sectio n20 2 o f

th e Unfunde d Mandate s Refor mAc t

o f 199 5 ("Unfunde dMandate s Act") , signe d

int o la w o nMarc h22,1995 , EP A mus t prepar e abudgetar y impac t statemen t

t o accompan y an y propose do r final rul e dia t include s aFedera l mandat e tha t ma y resul t

i n expenditur e b y State , local , an dtriba l governments , i ndi e aggregate ; o r

b y th e privat e sector , o f $10 0 millio no r

more . Unde r

Sectio n 205 , EP A mus t

selec t th e mos t

cost
- ' effectiv e an dleas t

burdensom e v alternativ e tha t

achieve s th e objective s o f ti e rul e an di s consisten t widi ' statutor y requirements
. Sectio n 20 3 ".- requires EP A t o establis hapla nfo r . . informin g an dadvisin g an y smal l ''••"''•; government s tha t

ma y b e signjficintl y o r uniquel y impacte db y iienile : Th e Agenc y ha s determine dtha t the
. direct';
. final rul e promulgate dtoda y doe s ho t includ e afedera l mandat e tha t ma y result i nestimate dcost s o f

$10 0 millio n o r mor e t o eitiie r

State , local , o r

triba l ] government s i nth e aggregate , o r t o th e privat e sector . Thi s actio ndoe s no t establis hregulatory requirements dia t - ma y significantl y o r

uniquel y affec t

' \ smal l governments . I n fact , tins actio n ha s th e effec t

o f reducin g potentia l regulator y burdens
. Therefore , the
. requirements o f

th e Unfunde dMandate s Refor mAc t

d o no t apply
. E. Submission to Congress and the General Accounting Office •' Unde r 5 U.S.C , 801(a)(1)(A ) a s adde d t b y th e Smal l Busines s Regulator y Enforcemen t

Fairnes s Ac t

o f 1996 , EP A submitte darepor t

containin g thi s rul e an dotiie r

require dinformatio nt p th e U.S
. Senate , th e U.S
. Hous e o f Representative s an ddi e Comptrolle r Genera l o f

th e Genera l Accountin g Offic e prio r

t o publicatio no f

di e rul e i n today' s Federa l Register
. Thi s rul e i s no t a"majo r

rule " a s define db y 5 U.S.C
. 804(2)
. • . . ; ' V
. Electroni c Copie s o f Rulemakin g Document s Electroni c copie s o f

thi s rule , an d earlie r rulemakin g document s relatedt o th e F/F A Registratio nProgram , th e Interi mDetergen t

Program , an dth e Detergen t

Certificatio nProgram , ar e . availabl e free o f

charg e o nEPA' s Technolog y Transfe r

Networ k

Bulleti n Boar dSyste m(TTNBBS ) an do nth e •''• Internet
. Fo r

specifi c instructions; : •'•

- contac t Josep hFemande s a t

di e phon e

. numbe r o r addres s above.'Thes e ' document s ar e als o availabl e i n th e ,. publi c docket s reference dabove.

- Lis t o f Subject s 40CFR Part

79\ - Environmenta l protection , Fuels , Fue l additives , Gasoline , Moto r vehicl e pollution , Penalties , Reportin g an d

recordkeeping requirements
. 40CFR Part

80 Environmenta l protection , Fue l additives , Gasolin e detergen t additives , Gasoline , Moto r

vehicl e pollution , Penalties , Reportin g an drecordkeepin g requirements. Dated : November

7,1996
. Caro l M
. Browner , Administrator. " '•' Eo r th e reason s se t

fort hi nth e . preamble , part s 7 9 an d8 0 o f titl e 4 0 o f di e Cod e o f

Federa l Regulation s ar e amende da s follows : PAR T79—[AMENDED ] 1
. Th e authorit y citatio nfo r par t 7 9 continue s t o rea da s follows : Authority : 4 2 U.S.C
. 7414 , 7524 , 754 5 an d 7601
. 2
. Sectio n79.6 1 i s amende db y revising paragrap h(d)(5 ) t o reada s follows : §79.6 1 Vehicl e emission s inhalatio n exposur e guideline . * * * * * (d) * * * (5 ) Exposure conditions. Unles s preclude db y di e requirements o f a- particula r

tes t protocol , anima l subject s shal l b e expose dt o th e tes t atmospher e base do nanomina l 5-day-per-wee k regimen,.subject

t o th e followin g rules:
. •

. (i ) Eac hdail y exposur e mus t b e a t leas t 6 hour s plu s th e tim e necessar y t o buil dth e chambe r

atmospher e t o 9 0 percen t o f th e targe t

exposur e atmosphere
. Interruption s o f dail y exposure s cause db y technica l difficulties , i f

infrequen t

i n occurrenc e an dlimite di nduration , ma y b e mad e u p di e sam e da y b y addin g equivalent
. exposur e tim e afte r

th e .technica l proble mha s bee ncorrecte dan dth e . exposur e atmospher e restore dt o th e . requiredlevel
. (ii ) Normally , n o mor e tiian tw o non exposur e day s ma y occu r consecutivel y durin g th e tes t

period
. However , i f

a thir dconsecutiv e non-exposur e da y shoul doccu r

du e t o circurnstance s beyon ddi e tester' s control , i t ma y b e • remedie db y addin g asupplementar y exposur e day
. Federa l an dother ' holiday s d o no t

constitut e suc h•'•••"
. circumstances
. Wheneve r possible , a make-u p da y shoul db e take na t th e first • qpportunity-.i.e. , o ndi e nex t da y whic h woul dotherwis e hav e bee na n" intentiona l non-exposur e day
. I f a compensator y da y mus t b e schedule da t th e en do f

th e standar dtes t

period;the n i t ma v occu r

either :

I I .•-.-"• - ' - - AMm.U^.1P. 6



## "**s.*?a§ i Federal Register/

Vol
. 61 , No
. 22 3 /

Monday , November

18 , 199 6 /

Rule s an dRegulation s 5874 7 -*5-W«t'*,- , w-*S i tf-i.fi s *-f-«\ v

- * - - a . - 

# W^fc^W^^i

(A ) Immediatel y followin g di e las t standar dexposur e day , ivid i h o intervenin g non-exposur e days ; o r (B ) Wit hu p t o tw o intervenin g non exposur e days , provide dtha t n o fewe r tha ntw o consecutiv e compensator y exposur e day s ar e complete dbefor e th e tes t i s terminate dan dth e animal s sacrificed.
. (iii ) Excep t

a s allowe di n paragrap h (d)(5)(ii)(B ) o f

thi s section , i nn o cas e shal l ther e b e fewe r

tha n fou r

exposur e day s pe r wee k a t an y tim e durin g di e tes t period
. * <iv ) A nomina l 9 0 da y (13-week ) subchroni c test

perio dshal l includ e n o fewe r tha n6 3 tota l exposur e days
. ' • PAR T80—{AMENDED ] 1
. Th e authorit y citatio nfo r par t 8 0 continue s t o rea da s follows : Authority : 4 2 U.S.C
. 7414
. 754 5 an d 7601(a)
. 2
. § 80.14 1 i s amende db y addin g paragrap h(c)(3)(v ) t o reada s follows : §80.14 1 Interi m detergen t gasolin e program . **** * (c ) * * * (3 ) * * * (v ) A manufacture r

ma y us e asingl e se t o f tes t dat at o demonstrat e di e deposi t contro l effectivenes s o f mor e tha non e registere ddetergen t additiv e product , provide dthat : (A ) th e additiv e product s contai nal l o f di e sam e detergent-activ e ' " • . \
. ~ ~ / component s an dn o detergent-activ e component s othe r

tha ntiiose containe d i ncommon ; an d
. . (B ) th e minimu mconcentratio n recommendedfo r

th e us e o f

eac hsuc h additiv e produc t

i s specifie dsuc hthat , whe neac hadditiv e produc t i s mixe di n gasolin e a t

th e recommended concentration , eac ho f

it s detergent

activ e component s wii i b e presen t a t a final concentratio nn o les s tha nth e lowes t concentratio nfo r

dia t cornponen t show nt o b e effectiv e b y di e dat a availabl e fo r

th e teste dadditiv e product
.

* * * * *•.';.-.• • 3
. § 80.16 1 i s amende db y addin g paragrap h(b)(l)(ii)(D ) t o read.a s follows : § 80.16 1 Detergen t additiv e certificatio n program . **** * (b) * * * 

### (D*- * * (ii ) * * * (D ) A manufacture r

ma y us e asingl e se t o f certificatio ntes t

dat at o demonstrat e th e deposi t contro l effectivenes s o f

mor e tha non e registereddetergen t

additiv e product , provide dthat : (1) th e additiv e product s contai nal l o f th e sam e detergent-activ e component s an dn o detergent-activ e component s otiie r tha nthos e containe di ncommon ; an d (2 ) th e minimu mconcentratio n recommende dfor

di e us e o f

eac hsuc h • additiv e produc t i s specifie dsuc hthat , whe neac hadditiv e produc t i s mixe di n gasolin e a t

di e recommende d concentration , eac ho f

it s detergent

activ e component s wil l b e presen t a t a final concentratio nn o les s tha nth e lowes t concentratio no f

dia t componen t whic hwa s presen t

whe nth e teste d additiv e produc t

me t di e PFI D an dIV D performanc e standard s specifie di n §80.165
. §80.16 9 [Amended ] 4
. § 80.16 9 i s amende db y redesignating paragrap h(g ) a s paragrap h (c)(9) ; i nnewl y designate dparagrap h' (c)(9 ) introductor y text , b y revising th e . referenc e "dii s paragrap h(g) " t o read "thi s paragrap h(c)(9)" ; an db y italicizin g di e headin g o f paragrap h (c)(9)
. 5
. § 80.17 2 i s amende db y revisin g paragrap h(e)(2 ) t o reada s follows : §80.17 2 Penalties . * : ' * * * * (e) . * * (2 ) Th e da y tha t

gasolin e no t additize di nconformit y wid i detergen t certificatio n progra mrequirements , a s a resul t o f th e PT D non-conformity , i s offere dfo r

sal e o r i s dispense dt o di e ultimat e consumer .

. * • * • * * * [F RDoc
. 96-2918 0 File d11-15-96 ; 8:4 5 ami BILLIN G COD E 6560-60- P