P. 2

Federa l Registe r

/ Vol

. 48 , No
. 8 0 /

Monday , Marc h 28 , 198 3 / Notice s 12S2 S Laboratory , 256

5 Plymout hRoad , An n Arbor , Michiga

n 48105

. FO B FURTHE R«MF®RK]flTll@ M ©©NYAGT : Loi s Platt e (313 ) 668-4308 , Phi l Loran g (313 ) 688-4374 , or

TomDarlingto n (313 ) 668-4313 , Emissio n Contro l Technolog y Division , U.S

. Environmenta l Protectio n Agency , 256

5 Plymout hRoad , An n Arbor , Michiga

n 48105

. SyMUlKEMTOK

V ONFOHCaAYIOM

: EPA' s curren t estimate s o

f emissio n factor s for moto r vehicle s ar e containe di n th e report "Compilatio n o

f Ai r Pollutan t Emissio n Factors : Highway Mobil e Sources, " Marc h198 1 (EPA-460/3-81

- 005)

. Th e emissio n factor s an dth e arithmetica l procedure s fo r combinin g the mint o a n estimat e o

f th e composit e emissio n factor s fo

r amoto r vehicl e flee t hav e bee n automate di n th e compute r programMOBILE2

. Th e report an dcomputer

programwer e develope d i n 1980 , an dEP

A perceive s tha t

i n th e intervenin g perio denoug hadditiona l informatio n ha s becom e availabl e t o warran t consideratio n o

f revisions t o both

. Althoug h EP

A i s no t require dt o invit e publi c participatio n durin g th e revisio n o f th e moto r

emissio n factors , EP

A believe s aserie s o

f publi c workshop s wil l facilitat e EPA' s revisio n proces s b y enablin g EP

A t o receiv e valuabl e technica l informatio n i n atimel y fashio n an dt o receiv e suggestion s fro mthos e partie s wh o may otherwis e b e intereste d i n th e revisio n proces s an dit s outcome
. Th e worksho p announce dher e i s th e thir do f aseries

. At

thi s thir dworkshop , EP A an dothe r

participant s pla n t o discus s severa l issue s relate dt o th e previou s workshop

. Th e previou s worksho p attempte dt o identif y al l o f th e issue s whic hcoul db e addresse di n arevisio n t o MOBILE2

. Som e o f th e issue s wer e more importan t tha n others , an dsome coul dno t

b e addresse db y eithe r curren t o r planne dtestin g becaus e o f resourc e problems

. In th e thir dworkshop , EP

A wil l identif

y th e specifi c revision s whic har e feasibl e fo r EP A t o accomplis hgive n th e prioritie s an dresourc e need s o

f thos e revisions

. Also , presentation s an ddiscussion s wil l b e hel do n th e topic s o

f 198 1 an dlate r emissio n factors , hig haltitud e emissio n factors , lea demissio n factors , col d temperatur e correctio n factors , heavy

duty vehicl e fue

l economy , an dth e statu s o f planne dheavy-duty engin e testing

. Suggestion s fo

r additiona l topic s shoul db e mad e i n advanc e o f th e workshop

. Becaus e o

f th e technica l natur e o f th e agenda , participant s shoul db e familia

r withth e existin g emission s factor s an dMOBILE 2 t o mos t full y contribut e t o th e discussions

. Thi s worksho p wil l no t discus s th e programmin g aspect s o

f th e MOBILE

2 compute r program , suc ha s it s interfac e with othe r

program s use di n preparin g emissio n inventorie s an dai r quality plans , an dth e languag e an dequipmen t requirement s o

f th e program , A worksho p may b e schedule dat alate r dat e to mee t

wit hpartie s intereste di n thes e area s i n particular

. No rulemakin g actio n i s anticipate di n connectio n with th e revision s tha t wil l b e th e subjec t

o f thi s workshop

. Consequently , th e worksho p wil l b e very informal

. Ther e wil l b e n o opportunity fo

r prepare dstatement s i n general , althoug h prepare dremark s wil l b e welcom e o n specifi c issue s a s thos e ar e brough t

u p fo r discussion

. Althoug h n o publi c docke t

wil l b e kept , writte n submission s ar e welcom e a t an y tim e an dmay b e brough t

t o th e worksho p or maile dto Loi s Platte , Phi l Lorang , or To mDarlingto n a t

th e addres s se t

ou t about

. Th e Agenc y i n additio n request s tha t al l person s plannin g t o atten dth e worksho p contac t

Loi s Platte , Phi l Loran g o r TomDarlington

. Dated : Marc

h21,1983

. Charle s L . Elkins , Acting Assistant

Administrator, Office of Air, Noise and

Radiation. [F RDoc
. 83-783 9 File d3-25-83 : 8:4 5 am ) BILLIN G COD E 6560-E&-0 ) [AD-FR L 2331-4 ] GMlon& l Alt ' IP®faffli@in i Sorts-© !
Unde r Pub

. L
. 92-463 , notic e i s hereb y give n tha t ameetin g o

f th e Nationa l Ai r Pollutio n Contro l Technique s Advisory Committe e wil l b e hel do n Apri l 26 , 27 , an d28,1983 , a t

th e Royal Vill aHotel , Royal Kin g Hal l I , 633 9 Glenwoo d Avenue , Raleigh , North Carolin a27612

. The'commercia l telephon e numbe r i s (919) 782-4433

. ' Th e tentativ e agend afo r th e meetin g i s a s follows : April 26 (Tuesday)—8:30a.m. Polymer s an dResins , Ne w Sourc e Performanc e Standar d(Sectio n 11 1 o f th e Clean Air

Act)

. Woo l Fiberglas s Insulatio n Manufacturing , Ne w Sourc e Performanc e Standar d(Sectio n 11 1 o f th e Clea n Ai r

Act)

. Grai n Elevato r

Industry , Revie w o

f Standard s o

f Performanc e fo

r Ne w Stationary Source s (Sectio n 11 1 o f th e Clea n Air Act)

. Primar y Copper Smelters , Revie w o

f Standard s o

f Performanc e fo

r Ne w Stationar y Source s (Sectio n 11 1 o f th e Clea n Ai r Act)

. April 27 (Wednesday)—8:30a.m. Continuatio n o

f Apri l 26—A s Required

. Kraf t Pulp Mills , Revisio n o

f Standard s o

f Performanc e fo

r Ne w Stationary Source s (Sectio n 11 1 o f th e Clean Ai r Act)

. Refiner y Sulfu r Plants , Revie w o

f Standard s o

f Performanc e fo

r Ne w Stationar y Source s (Sectio n 11 1 o f th e Clean Ai r Act)

. Inorgani c Arsenic , Statu s Report o n Developmen t

o f Nationa l Emissio n Standard s fo

r Hazardou s Ai r

Pollutant s (Sectio n 11 2 o

f th e Clea n Ai r

Act)

. April 28(Thursday)—8:30a.m. Continuatio n o

f Apri l 27—As Required

. All meeting s ar e ope n t o th e public

. Anyon e wishin g t o mak e apresentatio n shoul dcontac t

Ms
. Mar y Jan e Clar

k a t th e Emissio n Standard s an dEngineerin g Divisio n (MD-13) , U.S

. Environmenta l Protectio n Agency , Researc h Triangl e Park , Nort

h Carolin a27711 , b y Apri l 7 , 1983

. Th e commercial telephon e numbe r i s (919) 541-5571 , an dth e FT S numbe r i s 629-5571

. Th e docket s containin g materia l relevan t t o polymer s an dresin s (A-82

- 19) , woo l fiberglas s insulatio n manufacturin g (A-80-27) , grai n elevato r industr y (A-83-14) , primar y coppe r smelter s (A-81-42) , kraf

t pul p mill s (A

82-36) , an drefiner

y sulfu r plant s (A-83

- 16 ) ar e locate di n th e U.S

. Environmenta l Protectio n Agency , Centra l Docke t

Section , Wes t

Tower Lobby-Galler

y 1,401 M Street , S.W. , Washington , D.C

. 20460

. Th e docket s ma y b e inspecte dbetwee n 8:0 0 a.m . an d 4:0 0 p.m . o n wekdays , an dareasonabl e fee may b e charge dfo

r copying

. Dated : Marc

h 18,1983

. Kathlee n M
. Bennett, Assistant Administrator

for Air, Noise, and Radiation. [F RDoc
. 83-784 1 File d3-25-83 : 8:4 5 am ] BILLING COD E 65SO-50- U
IOPTS-51438D ; TSH-FR L 2332-3 ]

I E S AGEMCV : Environmenta l Protectio n Agenc y (EPA)

. aSTlON : Notice

. SUR2E]&RV : EP

A i s extendin g th e revie w perio dfo r a n additiona l S

O day s for premanufactur e notice s (PMN ) fo r th e tw o substances , PMN's-83-3 5 an d83-38 ,