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# OAR Box 1778 Prepped by Ollie Stewart



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# 44 ) ll-B-1 9 Docket Number: 

# A-90-0 6

Printed 10/28/20089:50:53 AM

Sheet 44of 276P. 2 

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# ^ IF-B-1 9



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### 24I98T OFFIC EO F M RAN D RADIATIO N

MEMORANDUM SUBJECT : Complianc e Statu s o f Phelp s Dodge's^Hidalg o Smelte r FROM : Joh nS . Seitz , Director^ ^

Stationar ySourc e ComplrsCnc e Divisio n Offic e o f Ai r Qualit yPlannin g and Standard s TO : Willia mB . Hathaway , Directo r

Air , Pesticide s and Toxic s Division , Regio nV I O n Septembe r 1 , 198 7 you r offic e forwarde d informatio n concernin g th e complianc e statu s o f Phelp s Dodge' s Hidalg o Smelte r i nPlayas , Ne wMexico , and requeste d tha t ou r offic e revie wtha t information . Thi s memorandum serve s a s anupdat e c.r . ou r review . Th e analysi s forwarde d b yyou r offic e conclude d tha t th e 198 6 additio no f th e oxyge nenrichmen t plan t a t Phelp s Dodg e resulte d i n a decreas e i nsulfu r dioxid e and particulates , an d tha t ther e ar e n o violation s o f th e PS D o r NSP S requirements . Ir . ou r revie ww e hav e consulte d wit hth e Offic e o f Polic yAnalysi s an d Revie w(OPAR) . SSC D an d OPA Rhav e indicate d tha t th e PSD/NSP S complianc e statu s coul d no t b e evaluate d withou t informatio no nactua l hour s o f operatio nand fee d rate . I n respons e t o thi s comment , o nOctobe r 6 , 198 7 you r staf f forwarde d th e confidentia l informatio no n"normal " day s o f operatio nan d "normal " fee d rat e delete d fromth e Septembe r 1 package . SSC D Octobe r 6 , establis h determin e —^k9/h r bas i and afte r emission s enrichmen t thos e emi s and OPARhav e reviewe d th e informatio nforwarde d o n

and hav e determine d tha t i t i s no t specifi c enought o NSP S no r PS D applicability . Fo r NSPS , w e nee d t o i f ther e ha s bee na nincreas e i nS0 2 emission s ona s whe noperatin g condition s ar e hel d constan t befor e th e change . Althoug hPhelp s Dodg e di d provid e kg/h r dat a befor e an

d afte r th e additio no f th e oxyge n plant , the ydi d no t specif yth e condition s unde r v:'nic ; sion s occurred . Fo r PSD , actua l emission s i n ton s pe rP. 3

ri 4 r- •

yea r befor e th e chang e mus t b e compare d t o potentia l emission s in

ton s pe r yea r afte r th e change . Phelp s Dodg e di d no t provid e eithe r o f thos e figure s fo r particulat e matter . Although ' Phelp s Dodg e ha s establishe d a nactua l emission s baselin e fo r S0 2 befor e th e change , i t i s no t possibl e t o determin e i f th e actua l S0 2 emission s reporte d afte r th e chang e represen t maximumpotentia l emissions . Therefore , i norde r t o establis hNSP S an d PS D applicability , mor e specifi c informatio ni s neede d fro mPhelp s Dodge , includin g dat a o nactua l (a s oppose d t o "normal" ) feed rate , and th e ne t particulat e emission s increase . Yo u hav e als o requeste d tha t ou r offic e revie wth e allege d SI P violation . W e hav e reviewe d th e informatio nsubmitte d an d agre e wit hyou r analysi s tha t th e frequen t by-passe s o f th e sulfu r dioxid e contro l equipmen t constitut e violation s o f th e Ne wMexic o Implementatio nPlan . Althoug ha SI P violatio n alon e i nanattainmen t are a woul d no t qualif ythi s sourc e a s a significan t violator , thi s violatio nshoul d b e resolve d i na timel ymanne r i nligh t o f Anne xIV t o th e U.S.-Mexica nborde r agreement . I f yo u hav e anyquestion s regardin g ou r review , pleas e contac t Sall yM . Farrel l a t FT S 382-2875 . cc : Bruc e Armstrong , OPAR Stanle ySpruiell , Regio n6 Stev e Hitte , SSC D Laxm i Kesari , SSC D Michae l S . Alushin , AE D Rache l M . Hopp , AE D