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

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

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

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

5 Use of the MIR Scale in California v Method to Quantify Ozone Impact of VOCs v MIR Scale developed by Dr. Carter v Chemical Mechanism Peer Reviewed and Approved by RSAC v 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 (SWA-MIR) of VOCs x VOC Reduction Commitment

7 Calculating Ozone Reduction Mass LimitsReactivity Limits 3.1 Tons per Day =9.6 Tons per Day VOC ReductionOzone Reduction

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

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

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

11 Other Factors to Consider v MIR value uncertainty v Methodology to set limits

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

13 Tables of Maximum Incremental Reactivity (MIR) Values v 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 v Prohibit Use of: --Trichloroethylene (TCE) --Methylene Chloride (MeCl) --Perchloroethylene (Perc)

15 Calculating Product-Weighted MIR Weight Weighted ContentsFractionMIR Reactivity acetone toluene propane xylene butane solids Total Total Product MIR= 1.47 g O 3 /g product

16 Summary v Innovative Regulatory Concept v Equivalent Ozone Reductions v Pilot Program