ÿWPCÀ à*Ó‰íÝ®$&¯šõ9qŸga ­[¨(P €#Åàìfý'Q£´ûùúy^fÈ v­4²•ï‰õñ•¶w\ò^‚­{øqå‘ ßí–—_QòýeˆiYw¿¿_Ö#ãI·\ ivr¬Fhãç73쨵‚@¡i«TJ¡Dh—øË£yN` 1éFúñãɃsÓ¶¢¥R Õß`Ø{Ñ?wX?M¤¬¼>*!žVÕS8ŸCF;;Çgx”ÍÕü‹tð)×'kém3І·bc±‚.e3¯s[7„°˜Ç–µš'ª;DÈo8Épb>³©¼¸~`ðDNRâžæ_<*j‚†[=’䌼./²ƒßjâGyg[`®šéZ,z—ø%dΧtpE ësÔÄŒ.ûªêø¤úŸÕÚ¶yVk(ÿ‚¿5_CQi…À¯jOŠh”ˆ6ë£pÁÝM)ã eS®Ï·²Ú©ÏèëHʇ{ŽÓÌÔM‹ȵfÊ·'°)õÙMgKÒYÀ £B©á†fÑÒ –ÁVC9¼¥¹2Ÿ"·¯>Ä“ßM)÷¶dß®Ç4–Á¯½Ÿ «l´!9?ÂÄáu™gŒ```©ñÚ\ñÂT±®¾Í­ U:Œ %ÆU@Ì nX 04t¨w¨4¬<þ6X9`("Courier 10cpiX*ÕÅ  `(CG TimesScalable#|x«<þ6X9`("Courier 10cpiXôxþ6X@É“8Ç;X@*ÕÅ  `(CG TimesScalableXXwÕÅ P쉊7ûXP( ¤T$¡¡Ó  Óz€#Ôô( Ý ƒ¤T!ÝÓ  ÓÝ  ÝÔ€X¼âXXXÔÌÌÌÌÌÌÌÌÌà  àà ` àà ¸ àà  àà h àà À àà  àà p àà È àIN€REPLY€€€A„5„1Ìà  àà ` àà ¸ àà  àà h àà À àà  àà p àà È àREFER€TO:€€NSO€2ÌÌÌMr.€Joseph€M.€TrammaÌAir€Quality€Analysis€and€Compliance€SupervisorÌSouth€Coast€Air€Quality€Management€DistrictÌ21685€Copley€DriveÌDiamond€Bar,€CA€€91765ÌÌDear€Mr.€Tramma:ÌÌà  àEPA€appreciates€the€opportunity€to€comment€on€your€proposal€to€issue€a€Permit€toÏConstruct€to€the€Mine€Reclamation€Corporation€for€the€construction€of€two€landfill€gas€flaresÏto€be€located€at€the€proposed€Eagle€Mountain€Landfill€in€northeastern€Riverside€County,ÏCalifornia.€€It€is€our€understanding€that,€due€to€the€District's€inadvertent€failure€to€notify€theÏEPA€of€the€draft€permit,€the€permit€will€not€be€issued€before€our€comments€are€considered,Ïnotwithstanding€the€fact€that€the€public€comment€period€has€already€ended.ÌÌà  àEPA's€primary€concerns€involve€the€application€of€BACT,€the€lack€of€available€offsetsÏfor€the€project,€the€application€of€District€regulations€to€only€a€portion€of€the€proposed€project,Ïand€the€enforceability€of€some€of€the€permit€conditions.€€In€addition,€EPA€believes€that€theÏproject,€as€currently€permitted€by€the€SCAQMD,€may€be€subject€to€review€under€the€federalÏPrevention€of€Significant€Deterioration€(PSD)€regulations.ÌÌà  àEPA€is€aware€that€the€SCAQMD€is€preparing€a€draft€permit€for€the€project's€landfillÏgas€collection€system€which€may€resolve€some€of€our€concerns.€€However,€because€theseÏpermits€are€being€issued€separately€and€the€draft€permit€for€the€gas€collection€system€has€notÏyet€been€proposed,€the€attached€comments€address€only€the€draft€permit€for€the€landfill€gasÏflares.€€Our€detailed€comments€on€the€draft€permit€are€attached.ÌÌÌÌÌÌÐ @-(, ÐÌÌà@ì..wà„2„ˆÌÌÌÌà..àIf€you€have€any€questions€regarding€these€comments,€please€contact€Bob€Baker€of€ourÏNew€Source€Section€at€(415)€744„1258.ÌÌà..àà` ..` àภ..¸ àà..ààh..hààÀ..Ààà..àSincerely,ÌÌÌÌà..àà` ..` àภ..¸ àà..ààh..hààÀ..Ààà..àKenneth€F.€Bigos,€ChiefÌà..àà` ..` àภ..¸ àà..ààh..hààÀ..Ààà..àStationary€Source€BranchÌà..àà` ..` àภ..¸ àà..ààh..hààÀ..Ààà..àAir€&€Toxics€DivisionÌÌEnclosuresÌÌcc:à..àCARBÌà..àJudy€Rocchio,€NPSÌÇÌà@ì..6àò òEPA€CommentsˆÌà@ì..0à€Mine€Reclamation€Corporation'sˆÌà@ì..ì àEagle€Mountain€Landfill€and€Recycling€Centeró óˆÌÌÌ1.à0..àThe€SCAQMD€permit€is€proposing€to€control€only€the€emissions€from€the€two€landfillÏgas€flares€in€Phase€I€of€the€project.€€By€permitting€only€Phase€I€of€the€project,€theÏDistrict€is€failing€to€limit€the€potential€to€emit€of€the€other€3€project€phases.€€WithoutÏfederally€enforceable€limits€on€a€source's€emissions,€EPA€calculates€a€source'sÏpotential€to€emit€by€assuming€the€source€is€operating€at€maximum€capacity€with€worstÏcase€(uncontrolled)€emissions.€€Since€the€EPA€also€considers€all€phases€of€a€projectÏwhen€calculating€a€source's€potential€to€emit,€EPA€would€combine€the€permittedÏemissions€from€Phase€I€with€the€uncontrolled€emissions€from€the€other€three€phases€toÏdetermine€the€Eagle€Mountain€Landfill's€potential€to€emit.€€As€a€result,€EagleÏMountain€would€be€deemed€a€major€stationary€source€subject€to€PSD€review€andÏwould€be€required€to€obtain€a€PSD€permit€from€the€EPA€before€it€could€commenceÏconstruction.€€EPA€recommends€that€the€District€revise€the€permit€to€include€allÏphases€of€the€project€or,€at€the€very€least,€include€enforceable€emission€limits/ratesÏthat€would€apply€to€future€permit€units,€effectively€limiting€total€emissions€from€theÏproject.ÌÌ2.à0..àThe€SCAQMD€permit€only€addressed€emissions€from€the€two€flares€in€Phase€I€of€theÏproject.€€District€regulations€[Rule€1303(b)€and€(b)(4)]€require€the€District€to€permitÏthe€total€project,€not€just€the€flares€in€phase€I.€€Rule€1303(b)€requires€the€permit€toÏaddress€the€net€emission€increase€at€a€facility.€€Rule€1302(h)€defines€"facility"€toÏinclude€"...other€air€contaminant„emitting€activities€which€are€located€on€one€or€moreÏcontiguous€properties..."€€Rule€1303(b)(4)€requires€a€new€major€polluting€facility€toÏmeet€the€requirements€of€40€CFR€51€Subpart€I€„€Review€of€New€Sources€andÏModifications,€which€defines€a€source€to€include€"...all€pollutant„emittingÏactivities...located€on€one€or€more€contiguous€or€adjacent€properties..."€€TheseÏregulations€require€the€District€to€permit€not€just€the€emissions€from€the€flares,€but€allÏemissions€from€the€project,€including€fugitive€emissions€from€the€landfill€operations.€ÏBy€not€addressing€emissions€from€the€landfill,€the€District€is€ignoring€the€air€qualityÏimpacts€from€hundreds€if€not€thousands€of€tons€per€year€of€PM„10€and€VOCÏemissions.ÌÌ3.à0..àThe€SCAQMD€permit€proposes€to€control€emissions€from€the€landfill€gas€flares€withÏautomatic€combustion€air€control€and€a€ðð€0.054€lbs/MMbtu€emission€rate€for€NOxÏand€a€ðð€0.27€lbs/MMbtu€emission€rate€for€CO,€and€assumes€a€gas€collectionÏefficiency€of€55%.€€EPA€believes€that€BACT€as€required€by€Rule€1303€should€requireÏa€significantly€higher€gas€collection€efficiency€(EPA€is€proposing€90%€as€LAER€forÏanother€landfill),€a€99%€VOC€destruction€efficiency,€and€should€consider€the€use€ofÏSCR€or€SNCR€for€control€of€NOx€emissions€and€a€CO€oxidizing€catalyst€for€controlÏof€CO€emissions.ÌÌà@ì..wà„2„ˆÌÌÌÌ4.à0..àThe€project€proponent,€MRC,€has€estimated€the€maximum€landfill€gas€production€rateÏfor€Phase€I€to€be€10,452€cfm€which,€at€505€btu/cu.ft.,€results€in€a€heat€input€rate€ofÏ314€MMbtu/hr.€€The€District€permit€limits€total€gas€flow€and€heat€input€to€the€flareÏstation€to€no€more€than€5748€cfm€and€174€MMbtu/hr.€€The€District€is,€in€effect,Ïassuming€a€55%€landfill€gas€collection€efficiency.€€If€gas€collection€efficiency€isÏassumed€to€be€a€more€reasonable€80+%€(EPA's€opinion),€then€emissions€from€theÏproject€will€be€significantly€greater€than€are€allowed€by€the€District€permit€and€willÏsubject€the€project€to€PSD€review€(see€Comment€1).ÌÌ5.à0..àThe€permit€requires€continuous€monitoring€of€landfill€gas€flow€rate€and€BTU€contentÏand€the€flare€temperature€but€does€not€require€continuous€monitoring€of€stackÏemissions.€€Considering€the€nature€of€the€fuel,€EPA€recommends€that€the€SCAQMDÏrequire€installation€of€NOx€and€CO€continuous€monitors€on€the€flare€exhaust€stacks.ÌÌ6.à0..àThe€SCAQMD€permit€proposes€to€provide€offsets€for€the€project€through€the€PriorityÏReserve.€€However,€Rule€1309.1(i)€limits€the€allocation€from€the€Priority€Reserve€toÏ250€lbs/day€for€CO.€€The€Eagle€Mountain€project's€allowable€CO€emissions€fromÏPhase€I€alone€are€1,128€lbs/day.€€Offsetting€these€emissions€from€the€Priority€ReserveÏwould€appear€to€be€a€violation€of€Rule€1309.1.€€Construction€of€this€project€withoutÏadequate€offsets€would€be€a€violation€of€Rules€1303(b)(2)€and€(b)(4).ÌÌ7.à0..àPermit€Enforceability€Issues:ÌÌà0..àa.à0` ..` àPermit€Condition€15€requires€continuous€monitoring€of€landfill€gas€BTUÏcontent.€€EPA€is€concerned€that€an€instrument€capable€of€continuouslyÏmonitoring€BTU€content€may€not€be€available.ÌÌà0..àb.à0` ..` àPermit€Condition€25€requires€an€annual€source€test€for€most€pollutants€but€doesÏnot€require€a€test€for€landfill€gas€BTU€content.€€Conditions€25€and€26€limitÏNOx€and€CO€emissions€to€0.054€and€0.27€lbs/MMbtu€respectively.€€Without€aÏtest€for€BTU€content€these€emission€limits€are€unenforceable.€€EPAÏrecommends€that€the€permit€require€testing€for€landfill€gas€BTU€content€as€partÏof€the€annual€source€test.ÌÌà0..àc.à0` ..` àPermit€Conditions€23€and€24€contain€lbs/hr€and€lbs/day€emission€limits€forÏemissions€from€each€flare€and€from€the€flare€station.€€However,€because€of€theÏlong€averaging€time,€a€lbs/day€emission€limit€cannot€be€enforced€from€anÏannual€source€test.€€In€order€to€enforce€lbs/day€emission€limits,€the€permitÏmust€require€continuous€monitoring€of€the€regulated€pollutant€(see€ourÏcomment€#5€above).ÌÌ̇à@ì..wà„3„ˆÌÌÌÌà0..àd.à0` ..` àPermit€Condition€27€limits€particulate€emissions€to€12.1€lbs€per€million€cu.€ft.Ïof€inlet€gas.€€In€order€to€enforce€this€limit€the€inlet€gas€flow€rates€for€bothÏflares€and€the€particulate€concentrations€in€both€flare€exhausts€will€all€have€toÏbe€measured€simultaneously.€€EPA€recommends€that€this€limit€be€changed€to€aÏlbs/MMbtu€limit€with€BTU€testing€during€the€source€test.ÌÌ8.à0..àAlthough€not€strictly€a€permit€issue,€the€risk€assessment€prepared€by€the€MineÏRecovery€Corp.,€as€required€by€District€Rule€1401,€addressed€only€the€health€impactsÏresulting€from€the€emissions€of€air€toxics€from€the€two€flares€in€Phase€I€of€theÏproject.€€The€assessment€assumed€98%€destruction€of€air€toxics€in€the€landfill€gas€byÏthe€flares.€€However,€the€assessment€did€not€address€health€impacts€from€theÏemissions€from€the€other€3€phases€of€the€project€nor€did€it€include€the€unabated€airÏtoxics€in€the€fugitive€VOC€emissions€from€the€landfill€itself.€€As€a€result,€the€riskÏassessment€did€not€include€the€health€impacts€of€possibly€hundreds€of€tons€of€airÏtoxics€per€year€from€the€project.ÌÌ