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Ðpower€blackout€also€be€considered€"emergency€generators"€as€that€term€was€used€in€the€earlier€guidance,€provided€that€aÏpower€shortage€emergency€exists€and€the€units€can€be€operated€within€parameters€that€maintain€the€integrity€of€the€500„hourÏestimate.€The€circumstances€under€which€backup€generators€may€be€used€to€avert€blackouts€this€summer€in€California€whileÏbeing€treated€as€"emergency€generators"€under€the€September€6,€1995€guidance€are€described€in€more€detail€below.€ToÏensure€that€this€guidance€change€regarding€use€of€emergency€generators€does€not€jeopardize€the€500€hour€estimate,€it€isÏlimited€to€operations€of€emergency€generators€through€October€30,€2000.€If€it€appears€that€there€are€risks€of€blackoutsÏbeyond€that€date,€EPA€may€reevaluate€the€situation€and€issue€additional€guidance.ÌÓ îÓÌÓ µîÓÓ µÓ€€€€€€€The€California€Independent€System€Operator€Corporation's€(Cal„ISO's)€Electrical€Emergency€Plan€includes€threeÏdifferent€stages€of€alert.€Stage€One€is€initiated€when€electricity€operating€reserves€fall€below€seven€lxrcent,€at€which€point€allÏcustomers€are€asked€to€voluntarily€conserve€electricity.€A€Stage€Two€emergency€is€declared€when€operating€reserves€dropÏbelow€five€percent,€at€which€pointÌÓ µÓÌÓ MµÓÓ  ÓÔ€&’l%%&rÒÔÔ€^dK _%&’lÔò òInternet€Address€(URL)€Ô€È»?É _^dKÔó ó9€€Ô€Q¦ÉÈ»?Ôò òhttp://www.epa..govÐ 8+´'/ ÐÔ€^dK _Q¦ÔRecycled/Recyclable€Ô€È»?É _^dKÔó ó9€€Ô€^dK _ÉÈ»?Ôò òPrinted€with€Vegetable€Oil€Based€Inks€on€Recycled€Paper€MinimñTñuñTñm€25%€Ô_ÔPostconsumerÔ_Ô)Ð Ô+P(0 ÐÓ  Óà@ìì*ìàˆÐ  `,Ü(1 ÐÓMÓÔ€^¤û _ _^dKÔÔ€?Œ£@ _^¤ûÔó ólarge€customers€that€have€signed€up€to€voluntarily€curtail€power€during€high€demand€days€are€asked€to€do€so.€WhenÐ „ Ðoperating€reserves€fall€to€one„and„a„half€percent,€a€Stage€Three€emergency€is€declared€and€rotating€blackouts€may€beÏneeded€in€order€to€prevent€a€complete€shutdownò ò€ó óof€the€system.Ð LÈ ÐÌÓ ZÓÓ ZÓThe€use€of€emergency€generators€to€avert€blackouts€should€be€restricted€to€a€last€resort€effort€after€theÏimplementation€of€all€other€options,€including€the€electricity€load€reduction€measures€called€for€under€Stages€One€andÏTwo€of€California's€Electrical€Emergency€Plan.€This€will€help€avoid€unnecessary€air€quality€impacts.ÌÓ ZÓÌÓ ZZÓÓ ZÓEPA€will€only€consider€a€power€shortage€emergency€to€occur€when€Cal„ISO's€system„wide€or€region„wideÏavailable€power€reserves€are€two€percent€or€less.€In€addition,€EPA€will€consider€such€use€to€constitute€the€operation€ofÏan€emergency€generator€only€when€it€is€limited€to€no€more€than€six€hours€of€use€following€any€given€declaration€byÏCal„ISO€of€a€power€shortage€emergency,€as€defined€above.€Cal„ISO€can€renew€the€declaration€if€power€reservesÏremain€at€or€belowò ò€ó ótwo€percent.Ð 8´  ÐÓ ZÓÌÓ ZZÓÓ ZÓI€believe€that€Cal„ISO€is€best€positioned€to€coordinate€with€California's€electric€utilities€and€establish€a€systemÏfor€notifying€owners€of€emergency€backup€generators€in€facilities€served€by€these€utilities€when€the€criteria€for€a€powerÏshortage€emergency€have€been€met.€CAL„ISO€should€also€notify€EPA.ÌÓ ZÓÌÓ ZZÓÓ ZÓThis€letter€revises€only€the€Federal€guidanceò ò€ó óon€operating€criteria€for€emergency€generators.€This€letter€doesÐ ” Ðnot€address€State€and€local€requirements€for€emergency€generators,€which€can€be€more€stringent.€By€providing€FederalÏflexibility,€the€guidance€contained€in€this€letter€will€allow€the€State€and€local€air€pollution€agencies€in€California€to€workÏwith€Cal„ISO€to€take€further€steps€to€avert€blackouts.€EPA€has€been€and€will€continue€to€coordinate€with€the€CaliforniaÏAir€Resources€Board€(ARB)€and€the€California€Air€Pollution€Control€Officers€Association€(CAPCOA),€and€we€supportÏtheir€ongoing€efforts€to€provide€flexibility€with€State€and€local€air€pollution€requirements.ÌÓ ZÓÌÓ ZZÓÓ ZÓMatt€Haber€of€EPA's€Region€IX€is€the€lead€contact€for€EPA€on€this€issue.€He€can€be€reached€at€(415)€744„¼1254.ÌÓ ZÓÌÓ! ùZ!ÓÓ ùÓà J àà‘,,_ à€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Sincerely,ˆÌÌÔ‡XÎàX@?Œ£Ô€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ñqñ€€€€ñqñ/s/Ô#†?Œ£@XXÎà #ÔÐ HÄ ÐÌÌÓ$ ê¿ ù$ÓÓ êùÓ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Robert€Ô_ÔPerciasepeÔ_ÔÌ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Assistantò ò€ó óAdministratorÐ à!\" ÐÓ êÓÌÓ$ i ê¿ $Ócc:à Á àFelicia€Marcus,€Regional€Administrator,€EPA€Region€IXÐ ¬#( $ Ðà Á àSteven€Herman,€Assistant€Administrator,€EPA€Office€of€Enforcement€and€Compliance€AssuranceÌà Á àBill€Richardson,€Secretary,€U.S.€Department€of€EnergyÌà Á àJames€Hoecker,€Chairman,€Federal€Energy€Regulatory€CommissionÌà Á à1%,1,QAaei€Kenny,€Executive€Officer,€California€Air€Resources€BoardÌà Á àWinston€Hickox,€Secretary€for€Environmental€Protection,€State€of€CaliforniaÌà Á àLarry€Greene,€President,€California€Air€Pollution€Control€Officers€AssociationÌà Á àBill€Keese,€Chairman,€California€Energy€CommissionÌà Á àLoretta€Lynch,€President,€California€Public€Utilities€CommissionÌà Á àà‘Ù"Ù"JÙ"àÓ! £i !Óˆ¼à‘,,ûà€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€Page€2ˆÌ߇€SC?`< ` à @XÈÈÈÈEXx- Ux-0̇ßâ À €%À €%X€%X€%â߇€ "SC?`<¥¤` ।@XÈÈÈÈEÀ x-¥¤—¤À x-5l‡ßâ -€%-€%À €%À €%â߇€%'SC?`<` à@XÈÈÈÈE-x-û-x-”̇ßâ ù€%ù€%-€%-€%â