[Table Of Contents (TOC)] [Proposed Rule Text (PRT)] [Supplementary Information (SUPP)] [Authority To Promulgate This Rule (AUTHORITY)] [List Of Subjects In Part 58 (LIST OF SUBJECTS IN PART 58)] [List Of Subjects In Part 60 (LIST OF SUBJECTS IN PART 60)] [List Of Subjects In Part 61 (LIST OF SUBJECTS IN PART 61)] [List Of Subjects In Part 63 (LIST OF SUBJECTS IN PART 63)] [List Of Subjects In Part 64 (LIST OF SUBJECTS IN PART 64)] [List Of Subjects In Subpart C Of Part 75 (LIST OF SUBJECTS IN SUBPART C OF PART 75)] [[[[[[[[[[Regulatory Impact Analysis (<AIR QUALITY PLANNING AND STANDARDS/NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS/DATA QUALITY OF AIR EMISSIONS MONITORING AND REPORTING</FONT>)] [Recordkeeping Requirements (<AIR QUALITY PLANNING AND STANDARDS/NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS/DATA QUALITY OF AIR EMISSIONS MONITORING AND REPORTING</FONT>)] [Legislative Proposals (<AIR QUALITY PLANNING AND STANDARDS/NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS/DATA QUALITY OF AIR EMISSIONS MONITORING AND REPORTING</FONT>)] [Environmental Justice (<AIR QUALITY PLANNING AND STANDARDS/NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS/DATA QUALITY OF AIR EMISSIONS MONITORING AND REPORTING</FONT>)] [Nonregulatory Alternatives (<AIR QUALITY PLANNING AND STANDARDS/NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS/DATA QUALITY OF AIR EMISSIONS MONITORING AND REPORTING</FONT>)] [Economic Impact (<<<< >>>>)] [Small Entities (<<<<<<<![[This item is outside its normal sequence.]](/icons/link.gif)
(SMALL BUSINESS ADMINISTRATION) (REGULATORY FLEXIBILITY ANALYSIS) (SMALL ENTITY IMPACT ANALYSIS) (ECONOMIC IMPACT ON SMALL ENTITIES) (SMALL BUSINESS ANALYSIS) (SMALL BUSINESSES) )]]]]]]]
MATERIAL SET ASIDE FOR ADDRESSES RECEIVED UNDER SEC. 553(B) OF THE ADMINISTRATIVE PROCEDURE ACT (“APA") FOR PUBLIC INSPECTION OR COPYING AT THE OFFICE OF THE FEDERAL REGISTER UNTIL MAY 24,
2005 AT NOONTIME IF THERE ARE ADDRESSES RECEIVED UNDER SEC.
553(B) THAT HAVE NOT BEEN MADE AVAILABLE TO THE GENERAL PUBLIC BEFORE MAY
24,
2005 AT NOONTIME.]&rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&p=&l=&a=E5–11066&t=&z=TITLES.TXT
[Docket No.
EPA–HQ–OAR–2004–0117]
CARBON DIOXIDE EMISSION FACTORS FOR USE IN APPLICABLE ENVIRONMENTAL REGULATIONS
AGENCY:&rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&p=&l=&a=E5–11066&t=&z=TITLES.TXT
ENVIRONMENTAL PROTECTION AGENCY,&rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&_amp;p=&_amp;l=&_amp;a=E5–11066&_amp;t=&_amp;z=TITLES.TXT
ACTION:&_amp;rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&p=&l=&a=E5–11066&t=&z=TITLES.TXT
Proposed rule.
SUMMARY:&_amp;rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&p=&l=&a=E5–11066&t=&z=TITLES.TXT
The Environmental Protection Agency (“EPA") proposes updating carbon dioxide emission factors used in applicable environmental regulations.
DATES:&_amp;rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=&p=l&a=E5–11066&t=z&TITLES.TXT
Comments must be received on or before July
11,
2005.
ADDRESSES:&_amp;rfr=cit&q=same&cfc=fdate&c=i&d=C05M29&m=A05M19&y=a&p=l&a=E5–11066&t=z&TITLES.TXT
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FOR FURTHER INFORMATION CONTACT:
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SUPPLEMENTARY INFORMATION:
I.Background
On March16,‑,2004,theEnvironmentalProtectionAgency(EPA)sentnoticesofintentiontoproposeamendmentsto40CFRPart58(SubpartC),40CFRPart60(SubpartsAA,BB,andCC),40CFRPart61(SubpartU),40CFRPart63(SubpartGGG),and40CFRPart64(SubpartGGG)(collectively,theProposedRule).ThesecodesetoutdataqualityrequirementsforairpollutantmonitoringstationsundertheCleanAirAct(CAA),whichincludesrequirementsforaccuracy,predictability,reproducibility,andprecisionofairpollutantconcentratormeasurements.ThesecodesetoutdataqualityrequirementsforairpollutantmonitoringstationsunderthecleanAirAct(CAA),whichincludesrequirementsofaccuracy,predictability,reproducibility,andprecisionofairpollutantconcentratormeasurements.Therulesalsorequirethatstationoperatorsperformcalibrationverificationstheirmeters.These requirementsensurethataccurateairpollutantconcentrationmeasurementsareavailabletoassistindecisionmakingprocessesrelatedtoissuingpermits,enforcingcompliance,andevaluatingpublichealthimpacts.TheProposedRulewouldupdateexistingcodesbyrequiringstationoperatorsusingautomaticcontinuousambientmonitoringstations(ACMs)(hereinafterreferredtoasmeters)toperformmorestringentcalibrationverificationtests.Inaddition,theProposedRulewouldrequirestationoperatorsusingACMs(toperformmorestringentcalibrationverificationtests.Inaddition,theProposedRulewouldrequirestationoperatorsusingACMs(toconductadditionalcalibrationverificationtestswithbothzeroandhighleveltestgases).
OnApril22,‑,2004,EPApublishedadraftscientificassessmentreport(DSAReport)(see69FR32976).Thedraftscientificassessmentreport(DSAReport)(see69FR32976).TheDSAReportanalyzedavailableresearchdataonvariousmetercharacteristicsincludingaccuracy,predictability,reproducibility,andprecision.TheDSAReportanalyzedavailableresearchdataonvariousmetercharacteristicsincludingaccuracy,predictability,reproducibility,andprecision.TheDSAReportconcludedthattheexistingmethodologyforverifyingACMsusedinambientairpollutantmonitoringstationswasnotadequate.TheDSAReportconcludedthattheexistingmethodologyforverifyingACMsusedinambientairpollutantmonitoringstationswasnotadequate.EPAhasdevelopednewmethodologyfortestingACMsbasedontherecommendationscontainedinthedraftscientificassessmentreport.Duringthisrulemakingprocess,EPAhasconsultedwithkeystakeholdersincludingindustryrepresentativesenvironmentalinterestgroupsstateandlocalgovernmentofficialsandacademics.EPAhasreceivedapproximately700commentsonthespecificissuesraisedinthedraftscientificassessmentreport.EPAhasreviewedthesecommentscarefullyandsoughtclarificationwhereappropriatefromcommenters.Thisfinalscientificassessmentreport(FSAReport)(see71FR40806)(hereinafterreferredtoasanewmethodologyfortestingACMsbasedontherecommendationscontainedinthedraftscientificassessmentreport.Duringthisrulemakingprocess,EPAhasconsultedwithkeystakeholdersincludingindustryrepresentativesenvironmentalinterestgroupsstateandlocalgovernmentofficialsandacademics.EPAhasreceivedapproximately700commentsonthespecificissuesraisedinthedraftscientificassessmentreport.EPAhasreviewedthesecommentscarefullyandsoughtclarificationwhereappropriatefromcommenters.Thisfinalscientificassessmentreport(FSAReport)(see71FR40806)(hereinafterreferredtoasa)
InresponsetospecificquestionsraisedinthesecommentsEPAisproposingamendmentsto40CFRPart58SubpartC(andotherrelevantpartsasidentifiedbelow).Thesechangesaredesignedtoprovideclarificationandguidanceonhowstationoperatorscanbestimplementtheneededchangesrecommendedbythefinalscientificassessmentreport.Furthermore,EPAisconsideringwhetherotherchangesmaybedesiredbasedonfeedbackfromkeystakeholders.OnJuly21,‑,2004,EPAheldaneeditorsmeetingatitsheadquartersinWashington,D.C.toaddressspecificquestionsaboutthemethodologyrecommendedbythefinalscientificassessmentreport.Thosepresentincludedrepresentativesfromindustry(environmentalinterestgroupsstateandlocalgovernmentofficialsandacademics.Thosepresentincludedrepresentativesfromindustry(environmentalinterestgroupsstateandlocalgovernmentofficialsandacademics.Alistofthosewhoattendedtheeditorsmeetingisprovidedattheendofthisnotice.Acopyofthefinalscientificassessmentreport(FSAReport)(see71FR40806)isalsoavailableatthiswebsite(http://cfpub/.cfm/?sid=/EPAPressRoom/&id=/PRD‐052‐04).
II.Proposed Amendments To Regulation And Supporting Data Quality Objectives For Data Collected Under The Clean Air Act Monitoring Programs
II.Proposed Amendments To Regulation And Supporting Data Quality Objectives For Data Collected Under The Clean Air Act Monitoring Programs
ThefollowingsectionsoutlinethereasonswhyEPAbelievesthattheseamendmentsarenecessary.Theseamendmentsareorganizedintofourcategories:
(a)ChangesToClarifyExistingRequirements(b)ChangesToAddNewRequirements(c)detaileddiscussionofthedataqualityobjectivesfortherulemakingsubjecttotheseamendments(d)economicimpactanalysis(forelementsincludedinthissection)
(a)
ChangesToClarifyExistingRequirements(b)
ChangesToAddNewRequirements(c)
DetailedDiscussionOfTheDataQualityObjectivesForTheRuleMakingSubjectToTheseAmendments(d)
EconomicImpactAnalysis(forElementsIncludedInThisSection)
(a)
ChangesToClarifyExistingRequirements(b)
ChangesToAddNewRequirements(c)
DetailedDiscussionOfTheDataQualityObjectivesForTheRuleMakingSubjectToTheseAmendments(d)
EconomicImpactAnalysis(forElementsIncludedInThisSection)
(a.)
Changes To Clarify Existing Requirements(b.)
Changes To Add New Requirements(c.)
Detailed Discussion Of The Data Quality Objectives For The Rule Making Subject To These Amendments(d.)
Economic Impact Analysis(forElementsIncludedInThisSection)
(a.) Changes To Clarify Existing Requirements(b.) Changes To Add New Requirements(c.) Detailed Discussion Of The Data Quality Objectives For The Rule Making Subject To These Amendments(d.) Economic Impact Analysis(forElementsIncludedInThisSection)
(a.) Changes To Clarify Existing Requirements(b.) Changes To Add New Requirements(c.) Detailed Discussion Of The Data Quality Objectives For The Rule Making Subject To These Amendments(d.) Economic Impact Analysis(forElementsIncludedInThisSection)
(a.)
Changes To Clarify Existing Requirements(b.)
Changes To Add New Requirements(c.)
Detailed Discussion Of The Data Quality Objectives For The Rule Making Subject To These Amendments(d.)
Economic Impact Analysis(forElementsIncludedInThisSection)
II.A.Changes Made To Clarify Existing Requirements
II.A.Changes Made To Clarify Existing Requirements
II.A.Changes Made To Clarify Existing Requirements
II.A.Changes Made To Clarify Existing Requirements
II.A.Changes Made To Clarify Existing Requirements
II.A.Changes Made To Clarify Existing Requirements
II.A.ChangesMadeToClarifyExistingRequirements
II.A.ChangesMadeToClarifyExistingRequirements
II.A.CHANGESMADETOCLARIFYEXISTINGREQUIREMENTS
Someexistingrequirementsneedclarificationbecausecurrentlanguageisambiguousordoesnotspecifypreciseactionsrequiredbystationoperators.Performancetestsperformedduringcalibrationverificationperiodsarecurrentlyrequiredtotestbothzero(gasesimulatingcleanair)samplesandsamplescontainingknownconcentratedlevelsoftestgases.Presently,thestandardrequiresstationoperatorsperformascalibrationverificationtestusingzerogasesamplewithinplusorminus30percenttoleranceintervalrelative(toleranceintervalrelative(toleranceintervalrelative(toleranceintervalrelative(toleranceintervalrelative(thezerolevelsamplevalue)).Stationoperatorsshoulduseazerolevelsamplevalueequaltozero(orazeroequivalentvalueifinstrumentdoesnotreadzero))whencalculatingpercenterrorpercentageerrorpercentageerrorpercentageerrorpercentageerror(thezerolevelsamplevalue)).Stationoperatorsshoulduseazerolevelsamplevalueequaltozero(orazeroequivalentvalueifinstrumentdoesnotreadzero))whencalculatingpercenterrorpercentageerrorpercentageerrorpercentageerrorpercentageerrortobeterminethezerotolerancedelimitedtoleranceintervallimitsetforthecalibrationverificationtest.Forexample,aunitreading100ppbshouldhaveacharacteristicerrorlessthan30ppbifitismeasuredagainstazerolevelsamplevalueequaltozerobecause30percentofzeroiszerobasedonthedefinitionoffromwhichthezeroleveltoleranceintervalisderived.Fortherforextremelylowreadingsthatisclosetoothersideoftoleranceintervallimit,suchasthisexample,itmaybequestionablewhetheracharacteristicerrordifferencebetweenthetwomaximumtolerancevalues(i.e.,plus30percentminus30percenttoleranceintervalsrelativetoazerolevelsamplevalueequaltozeroi.e.,plus30percentminus30percenttoleranceintervalsrelativetoazeroequivalentvaluethatisgreaterthanorlessthanazeroequivalentvaluethatcorrespondstoaninstrumentreadingclosetoothersideoftoleranceintervallimit,isacceptableorunacceptablebecauseinthefirstcase,thecharacteristicerrordifferencebetweenplus30percenttoleranceintervallimit(minus30percenttoleranceintervallimitismaximizedwhileinthesecondcase,itminimizedresultinginsignificantlydifferentresultsdependinguponwhichsideoftoleranceintervallimitthestationoperatorchooseswhencalculatingcharacteristicerrors).
Someexistingrequirementsneedclarificationbecausecurrentlanguageisambiguousordoesnotspecifypreciseactionsrequiredbystationoperators.Performancetestsperformedduringcalibrationverificationperiodsarecurrentlyrequiredtotestbothzero(gasesimulatingcleanair)samplesandsamplescontainingknownconcentratedlevelsoftestgases.Presently,thestandardrequiresstationoperatorsperformascalibrationverificationtestusingzerogasesamplewithinplusorminus30percenttoleranceintervalrelative(thezerolevelsamplevalue)).Stationoperatorsshoulduseazerolevelsamplevalueequaltozero(orazeroequivalentvalueifinstrumentdoesnotreadzero))whencalculatingpercenterrorpercentageerrorpercentageerrorpercentageerrorpercentageerrortobeterminethezerotolerancedelimitedtoleranceintervallimitsetforthecalibrationverificationtest.Forexample,aunitreading100ppbshouldhaveacharacteristicerrorlessthan30ppbifitismeasuredagainstazerolevelsamplevalueequaltozerobecause30percentofzeroiszerobasedonthedefinitionoffromwhichthezeroleveltoleranceintervalisderived.Fortherforextremelylowreadingsthatisclosetoothersideoftoleranceintervallimit,suchasthisexample,itmaybequestionablewhetheracharacteristicerrordifferencebetweenthetwomaximumtolerancevalues(i.e.,plus30percentminus30percenttoleranceintervalsrelativetoazerolevelsamplevalueequaltozeroi.e.,plus30percentminus30percenttoleranceintervalsrelativetoazeroequivalentvaluethatisgreaterthanorlessthanazeroequivalentvaluethatcorrespondstoaninstrumentreadingclosetoothersideoftoleranceintervallimit,isacceptableorunacceptablebecauseinthefirstcase,thecharacteristicerrordifferencebetweenplus30percenttoleranceintervallimit(minus30percenttoleranceintervallimitismaximizedwhileinthesecondcase,itminimizedresultinginsignificantlydifferentresultsdependinguponwhichsideoftoleranceintervallimitthestationoperatorchooseswhencalculatingcharacteristicerrors).
Some existing requirements need clarification because current language is ambiguous or does not specify precise actions required by station operators.Performance tests performed during calibration verification periods are currently required to test both zero(gasesimulatingclean air)samplesandsamplescontainingknownconcentratedlevelsoftestgases.Presently,the standard requires station operators perform acalibration verification test using zerogasesample within plusorminus thirty percent tolerance interval relative(the zero level sample value)).Station operators should use azero level sample value equal too zero(or azero equivalent value if instrument does not read zero)) when calculating percent error percentage error percentage error percentage error percentage errorto determine thee zero tolerance delimited tolerance interval limit set forth calibration verification test.For example,a unit reading one hundred ppb should have acharacteristic error lessthan thirty ppb if it is measured against az ero level sample value equal too zero because thirty percent off zero is zero based on then definition offrom which thee zero level tolerance interval is derived.For ther efore extremely low readings thatis close too otherside oftolerance interval limit,such asthis example,it may be questionable whether ach aracteristic error difference between th e two maximum tolerance values(i.e., plus thirty percent minus thirty percent tolerance intervals relative too az ero level sample value equal too zero i.e., plus thirty percent minus thirty percent tolerance intervals relative too az ero equivalent valuethatis greater than ore less than az ero equivalent valuethat correspond
