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# OAR Box 1158 Prepped by RyanDugan



### Document

Number: 

# 28 ) l-C- 4

Docket Number: 

# A-88-0 2

Printed 4/28/2008 2:34:12 PM

Sheet 28 of 349P. 2

MIDWES TRESEARC H INSTITUT I

4505 Creedmoo rRoa i Raleigh , N.C

. 2761 : Telephon e (919 ) 781-575 i

Januar y 22 , 198 5 

### A-88-0 2

x-c- q

Mr . Claud e Theisen , T& S Bras s and Bronz e Rout e 4 Ol dBuncomb e Roa d Traveler s Rest , S.C . Dea r Mr . Theisen : Vic e Presiden t Work s :' i

2969 0 

### JA NI 8199 1 

# 1 J EP AAI R DOCKE T Midwes t Researc hInstitut e (MRI ) i s currentl y unde r contrac t (Contrac t No . 68-02-3817 ) wit hth e U . S . Environmenta l Protectio nAgenc y (EPA ) t o study

ai r emission s o f chromiu m fro m severa l differen t sourc e categorie s includin g chromiu m platin g operations . A s note di n Enclosur e 1 , MR I ha s bee ndesignate da s a n authorize drepresentativ e o f EPA t o perform

thi s stud

y unde r Sectio n.11 2 o f th e Clea nAi r Act . I nou r telephon e conversatio nonJanuar y 11 , 1985 , I summarize d th e informatio ntha t w e ar e presentl y collectin g o nchromiu m platin g processe s an

d emissio ncontro l techniques . I wil l b e contactin g yo u agai nwithi nth e nex t wee k t o discus s thi s information . Th e informatio n yo uprovid e wil l b e use di n decidin g whethe r o r no t t o procee dwit hth e developmen t o f a

n ai r emissio nstandar dfo r chromiu m platin g operations . W e appreciat e an

y assistanc e yo u ca n giv e u s i nthi s matter . I f yo uhav e an

y questions , pleas e contac t me o r Ms . Barbar a Duletsky a t (919 ) 781-5750 . Sincerely , 

### ^/<_/i4rs ^ <JL-

OWX* / Richar dC . Coope r ' Environmenta l Scientis t Enclosur e

/ • Principa l Laboratorie s 42 5 Volke rBoulevard , Kansas City

. Missour i 6411 1P. 3

Mt O sis,,

. UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y Offic e o f Ai r Qualit

y Plannin g an dStandards Researc hTriangle Park,cNort

hCarolin a 2771 1

DESIGNATION

O F AUTHORIZE D REPRESENTATIV E FO RSTANDARD S O F PERFORMANC E FO R ME W STATIONAR YSOURCE S (SECTION 111 ) AN D NATIONAL EMISSION STANDARD S FO RHAZARDOU S AI RPOLLUTANT S (SECTION 112 )

Midwes t Researc hInstitut e i s hereb y designate da nAuthorize d Representativ e o f th e Administrato r o f th e Unite dState s Environmenta l Protectio nAgenc y

fo r th e purpos e o f assistin g i nth e developmen t o f standard s o f perfonnanc e unde r 4 2 U.S.C . 741 1 and nationa l emissio n standard s fo r hazardou s ai r pollutant s unde r 4 2 U.S.C . 741 2 fo r calciner . and dryers , mercury , asphal t concrete , magneti c tapes , plasti c parts , aluminu

m extrusions , elastomeri c fabrics , secondar y bras s an d bronze , portlan dcement , resilien t flooring , ethylen e dichloride , epichlorohydri nan d chromiu m unde r Contrac t Numbe r 68-02.-3817 . Thi s designatio ni s mad e pursuan t t o th e Clea nAi r Act , 4 2 U.S. C 7414 . Th e Unite dState s Cod e provide s that , upo npresentatio no f thi s credential , th e Authorize dRepresentativ e name dherein : (1 ) shal l hav e a righ t o f entry

to , upon , o r throug han y premise s i nwhic ha nemissio n sourc e i s locate do r i n whic hrecord s require dt o b e maintaine dunde r 4 2 U.S.C . 7414(a)(1 ) ar e located , an d (2 ) may a t reasonabl e time s hav e acces s t o an d cop

y an y records , inspec t an y monitorin g equipmen t o r metho drequire dunde r 4 2 U.S.C . 7414(a)(1) , and sampl e an y emission s whic hth e owne r o r operato r o f suc hsourc e i s require dt o sample . Authorize dRepresentative s o f th e Administrator ar e subjec t t o th e provision s o f 4 2 U.S.C . 7414(c ) respectin g confidentialit y o f method s o r processe s entitle dt o protectio na s trad e secrets , a s implemente db y 4 0 CF R 2.301(h ) (4 1 F R 36912 , Septembe r 1 , 1976) . 

### Date : @S T 1 S WM Designatio n Expires : Septembe r30 , 198 7

•/r^Geral d A

. Em i so n Directo r Offic e o f Ai rQualit yPlannin g

an d Standards

£.