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# OAR Box 1818 Prepped by Ollie Stewart



### Document

Number: 

# 11 ) ll-C- 8 Docket Number: 

# A-87-1 1

Printed 11/6/2008 3:12:41 PM

Sheet 11 of 79P. 2

r"*r . 

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•.'onnr;~hl e Dian e Stee d AOr.iniBtrato r Departmen t o f Transportatio n 40 0 7th Street , S.W . Washington , D C 2059 0 ~>,?xr :1s . i'-teeoz Than k yo u fo r your l^ct^ r c-'i ...Tun e Ll , 198 7 i n respons e t o our reamis t fo r consultatio n unri-^ r Sectio n 202(a)(6 ) o f th e Clea n Ai r Ac t concernjng nafefc v implication s o f onboar d refuelin

g controls . « e appreciat e the tim e an d effor t investe

d b yboth , yo u an

d your chaf f reviawinqdocument s an d providing . comment s i n thi s -ratter . !\ ! e .loo k forwar d t

o further consultatio n following the clos e o f the publi c commen t perio d on our proposal . A s yo u know , "PA . -ioc s ^o t inten

d t o adop t requirement s unles s i t i s clea r oa t tbe yo-=t n b e :v,ot withou t degradin

g vehicl e safety . Ou r .-.irai' t safet yanalysi s whic h yo u hav e reviewe d ha s carefull yanalyse d the know n safet yissue s an d foun d tha t n o barrie r t o saf e design s exist s a t present , give n prope r attentio n t o safet yfactors . I n fact , ther e ar e aspect s o f som e approache s t o refueling contro l whic h ca n ac t t o improv e overal l fue l syste msafety . I n ligh t o f the overal l liabilit yo f manufacturer s fo r the performanc e o f thei r vehicles , ;*

e believ e tha t safet ywil l be give n carefu l consideratio n during th e design o f onboar d controls . Thus , i t appear s t o , u s tha t onboard control s can i.-> e adopte d wit h no advers e effec t o n safety . W e agree , a s yo u stres s i n you r letter , tha t leadtime i s a ke yingredient .i

nassuring the developmen t o f saf e designs . Fue l syste

m relate

d fires , eithe r cras h o r non-cras h related , ca n pos e a significant hazard , an d manufacturer s wil l requir e sufficien t timf

t t o bot h desig n an d tes t ne w hardware . W e appreciat e you r comment s abou t the adequac yo f ou r propose d tw o yea r leadtime perio d am i subsequen t phase-i n schedul e an d hav e take n not e o f the othe r safety-relate d NHTS Aaction s yo u hav e identifie d a s impinqinc ; on thi s sam e leadtime period . SDSB:Anderson:jwm:256 5 Plymout h Rd.:X496:06/26/87:ID#:5087 W Las t reviewe d b

yCharle s Gray:7/1/87:AX70105 5P. 3

/ > iv

e full v expec t tha t leadtim e wil l ri-

e a centra l iasu e i n our rulemaking . During the publi c participatio n proces s we shoul d receiv e detaile d analyse s o f leadtime requirement s fro m Kianufacturers . Base d upo n tna t inm.it ve '-.il l b e abl p t o updat e an d revis e ou

r curren t leadtime ana]ypis . A s we have indicated , althoug

hw e ar e proposing a two yea r reauirement , w e remai n ope

nt o th e possibl e need for a are a ter amoun t o f time , especiall yi f adde d leadtime woul d clearl yaic . i n solving safet yconcerns . Our consideratio n o f a phase-i n o f tne progra mi s on e possibl e approac h t o easin o the burde n o n manufacturers . We als o welcome you r continue d participatio n i n resolutio n o f th e leadtime auestion . W e wil l be i n a muc h bette r positio n t o resolv e ope n leadtime issue s afte r receiving detaile d comment s fro

m manufactur e rr

> o n thi s area . W e full yexpec t tha t ;-i yth e en d o f the rulemakin g proces s 'w

e wil l have resolve d an y difference s Detwee n our two agencie s ove r th e prope r amoun t o f leadtime require d fo r the saf e implementatio n o f onboar d controls . You r lette r als o include d a numbe r o f DO T staf f comment s o n our draf t safetyassessment . V!e '.-'er e alread

yawar e o f mos t o f thes e matter s throug h staf f leve l contacts . Pleas e be. , assure d tha t w e ar e incorporating thes e comment s int o th e final ' versio n o f our safet yanalysis . Sincerely * J5L\ (%^AAT^- J . Crai g Potte r Assistan t Administrato r fo r Ai r an

d Radiatio n

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