1 Proposed Proposed California Low Emissions and California Low Emissions and Reactivity (CLEAR) Regulation Reactivity (CLEAR) Regulation For Aerosol Coating Products For Aerosol Coating Products Meeting of the Reactivity Scientific Advisory Committee August 26, 1998 Riverside, California California Environmental Protection Agency Air Resources Board
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1 Proposed California Low Emissions and Reactivity (CLEAR) Regulation For Aerosol Coating Products Meeting of the Reactivity Scientific Advisory Committee.
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ProposedProposed California Low Emissions California Low Emissions and Reactivity (CLEAR) and Reactivity (CLEAR) Regulation For Aerosol Regulation For Aerosol
Coating ProductsCoating ProductsMeeting of the Reactivity Scientific
Advisory CommitteeAugust 26, 1998Riverside, California
California Environmental Protection Agency
Air Resources Board
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AgendaAgenda
RSAC Meeting on February 24 Legal Requirements Proposed Regulatory Language Program Elements Updated Table of MIRs Schedule
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Legal RequirementsLegal Requirements
Statutory Requirement for review
Public Process for review
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Public Process to Public Process to Adopt RegulationsAdopt Regulations
Staff Report and proposed Regulation released 45 days prior to October Board Hearing
Public review during this time
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Proposed CLEAR Proposed CLEAR Regulation For Aerosol Regulation For Aerosol
* Ranking of “9” infers that the current mechanism is expected to (or has been found to) over-predict reactivity.
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Upper Limit Upper Limit MethodologyMethodology
Methodology developed by Dr. Carter of University of California at Riverside
Published methodology based on interpretations from practical, experimental evidence
Discussed at February meeting
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MethodologyMethodology
Upper-Limit MIR = Kinetic Reactivity x Mechanistic Reactivity,
where ULMIR is in units of g O3 formed / g VOC emitted,Kinetic Reactivity is fraction of VOC reacting (unitless), andMechanistic Reactivity is g O3 formed / g VOC reacting.
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Upper Limit MIR Upper Limit MIR ProposalProposal
Propose to use methodology if no MIR value on Dr. Carter’s list
Reflects new chemical mechanism Affects less than one percent-by-
weight of reported aerosol coating VOCs
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Assigning MIRs to Assigning MIRs to Hydrocarbon Hydrocarbon SolventsSolvents
Used in aerosol coatings Solvents with constituents of
normal, branched and cyclic alkanes, and aromatic compounds
Goal is to identify classes or ‘bins’ and assign MIR value to each bin