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The Aerosol Coatings Reactivity-Based Regulation

The Aerosol Coatings Reactivity-Based Regulation introduces a new regulatory concept for efficient ozone reductions in California. With two tiers of mass-based limits, this regulation offers compliance flexibility, cost savings, and significant environmental benefits.

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The Aerosol Coatings Reactivity-Based Regulation

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  1. California Environmental Protection Agency Air Resources Board The Aerosol Coatings Reactivity-Based Regulation

  2. New Regulatory Concept • Limits Based on Photochemical Reactivity • Efficient Ozone Reductions • Cost Savings • Compliance Flexibility

  3. The Aerosol Coatings Regulation • Two Tiers of Mass-Based Limits for 35 Categories • Board Hearing, June 22, 2000 • Established equivalent reactivity-based VOC limits

  4. Why Propose Reactivity Regulation for Aerosol Coatings? • Well-defined Consumer Product Category • Detailed Speciated VOC Data Available • VOC Ingredients Well-Studied for Reactivity • Aerosol Coatings Industry Open to Reactivity Approach

  5. Use of the MIR Scale in California • Method to Quantify Ozone Impact of VOCs • MIR Scale developed by Dr. Carter • Chemical Mechanism Peer Reviewed and Approved by RSAC • Currently used in California Clean Fuels and Low Emission Vehicles Program

  6. Target Ozone Reduction Calculation Target Ozone Reduction calculated using speciated VOC data: = Sales-Weighted Average MIR (SWA-MIR) of VOCs x VOC Reduction Commitment

  7. Calculating Ozone Reduction Mass Limits Reactivity Limits 3.1 Tons per Day = 9.6 Tons per Day VOC Reduction Ozone Reduction

  8. Hydrocarbon Solvent Bins • “Bin” System to Categorize Solvents with Similar Characteristics • Validated Method Using Data from Solvent Manufacturers

  9. Hydrocarbon Solvent Bins • Table for Hydrocarbon Solvent MIRs • 20 Bins for Solvents Predominately Paraffinic, Isoparaffinic, and Cyclic Alkanes • Mean Boiling Point • Aromatic content • 4 Bins for Solvents Containing Only Aromatic Hydrocarbons • Boiling range • Default values

  10. No Exemptions • Mass-Based Definition of VOC • Exempts Acetone, Methyl Acetate and Other Low and Negligibly Reactive Compounds • Reactivity-Based Amendments • No Exemptions

  11. Other Factors to Consider • MIR value uncertainty • Methodology to set limits

  12. Review of MIRs • Review of MIRs • 18 months review and update • Regulatory process • “Lock in” Aerosol Coating MIRs for 5 years • New compounds added can be used

  13. Tables of Maximum Incremental Reactivity (MIR) Values • New Subchapter 8.6 to Title 17 of CCR - Tables of MIR Values --Individual VOCs --Aliphatic Hydrocarbon Solvents --Aromatic Hydrocarbon Solvents

  14. Prohibition on Use of Toxic Air Contaminants • Prohibit Use of: --Trichloroethylene (TCE) --Methylene Chloride (MeCl) --Perchloroethylene (Perc)

  15. Calculating Product-Weighted MIR Weight Weighted Contents Fraction MIR Reactivity acetone 0.300 0.43 0.129 toluene 0.150 3.97 0.596 propane 0.200 0.56 0.112 xylene 0.050 7.37 0.369 butane 0.200 1.33 0.266 solids 0.100 0 0.000 Total 1.000 1.472 Product MIR= 1.47 g O3/g product

  16. Summary • Innovative Regulatory Concept • Equivalent Ozone Reductions • Pilot Program

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