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# OAR Box 1778 Prepped by Ollie Stewart



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.P. 3 UNITE D STATES ENVIRONMENTA L PROT I 2.1 3



## JA N 2 8 1982
MEMORANDU

M SUBJECT : Painesvill e Municipa l Powe r Boile r Dera t FROM :



### TO : Directo r

Division o f Stationar y Sourc e Enforcement \ Sandr a S . Gardebring , Directo r Enforcemen t Division , RegionV 

# i^Kess s
Thi s i s i

nrespons e t o you

r Decembe r 11 , 198 1 reques t fo r a n applicabilit y

determination , an d th e follow-u

p materia l whic hw e received January

5 , 1982 . You

r reques t involve s th e Painesvill e Municipa l Powe r Plan t boile r No . 5 , whic hi s subjec t t o NSPS , Subpar t D . The Cit y

o f Painesvill e wishe s t o avoi d meetin g th e 1. 2 lb/m

m Bt u standard for SO 2 b y derating th

e boile r s o tha t ! it s capacit y

i s les s tha

nth e 25 0 m m Btu/hou r minimu

m required b

y ' Subpar t D . Painesvill e propose s t o d o thi s b y insertin

g a plat e , i nth e feede r t o the pulverize r whic hwil l restric t th e maximu

m ' . coa l fee

d capability . Onc e set , th e uppe r limi t o

nth e coa l \ feede r gat e adjuster s woul d b e welded i

nplac e t o mak e th e derat e ; permanent . ' kv Regio nV

feel s thi s doe s no t mee t criteri a establishe d b y ; DSS E i nit s Octobe r 7 , 197 7 derat e memorandum . Thi s provided tha t a derat e "mus t be accomplished througha permanen t physica l chang e t o th

e affected facility whic hwil l preclud e i t fro m operating a t a capacit y greate r tha

nth e derated value. " Th e Regio nbelieve s th e cos t an

d lengt ho f tim

e needed t o undo th e derat e ar e minimal , an d tha t i t i s physicall y possibl e t o und

o th e derat e withou t a uni t outage . Concurrenc e i s requeste d fro m DSS E tha t Painesville* s proposed derat e strateg y i s unacceptable , an d guidanc e i s requeste d a s t o wha t specifi c physica l change s woul d resul t i

nacceptabl e derate s for purpose s o f avoiding NSP S applicability . DSS E ha s discusse d thi s issu e wit hEPA' s Offic e o f Ai r Qualit y Planning an

d Standards , an

d we ar e i

nagreemen t wit hyou r position . Wha t Painesvill e ha s propose d woul d no t represen t a permanen t physica l derat e becaus e i t woul d be relativel y eas y t o undo the plat e an

d increas e th

e fee d rat e t o th

e pulverizer , an

d i t coul d be don e withou t removin g th e boile r fro

m operation . ,--

- r ^ re m u.v* i (I4*/V ) OFFICIA L FVa.* ; "JP 1

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• V P. 4

Althoug hDSS E an

d OAQP S believe that modification s t o th e boile r itsel f woul d b

e preferable , w

e wil l conside r othe r procedure s involvin

g th e coa l fee

d syste m whichwoul d resul t i na permanen t physica l derat e whil e no t causin g boile r damage . P.ecaus e o f th e wide rang e o f possibl e derat e options , a n inclusiv

e lis t o f acceptabl e one s ca nobviousl y

no t b e given . Genera l guidanc e can , however , b e provided . DSS E ha s previousl y determined , i

nit s Februar

y 28 , 197 8 menorandum , tha t changin g syste m capacit y

represent s a

nacceptable - derate . Thi s woul d involv e a switcht o smalle r fan s wit hsmalle r capacity , an d th e us e o f smalle r pipe s en d pump s t o contro l fee d rate . Additionally , bot hTSS E an d OAQP S agre e tha t change s involvin g th e burne r o r pulverize r whic hrequir e a uni t outag e t o b e undon e offe r th

e bes t guarante e tha t th e derat e wil l be permanent , bu t an y propose d derat e wil l be considered . I t mus t provid e enoug h detai l t o allo

w a judgmen t a s to it s permanency , en d allo w a determinationa s t o th e resulting maximu m capacity . I

nn o cas e mus t th

e maximu

m derated capscit y

exceed 25 0 m

m Bt u per hou

r hea t input , averaged ove r an y on e hour period . Th e sourc e mus t submi t an y proposed derat e t o your offic e in orde r t o ensur e i t i s acceptable . I f you nee d assistanc e i

n evaluatin

g a proposal , pleas e fee l fre e t o contac t us . Thi s respons e ha s beenprepared wit hth e concurrenc e o f OAQPS . Shoul d you hav e an y questions , pleas e contac t Rober t Myer s o f m

y 6taf f a t FT S 382-2875 . 

# U

(bat hi Edwar d E . Reic h

cc : Devi d Schult z Joh nGaitskil l Edit hArdient e BobWals h Eer l Sal o

. c •