State of California AIR RESOURCES BOARD Pacific Room Holiday Inn Fisherman's Wharf 1300 Columbus Avenue San Francisco, CA August 23, 1978 10:00 a.m. AGENDA Page 78-15-1 Approval of Minutes of July 26, 1978 Board Meeting 78-15-2 Consideration of a Proposed Model Rule for the Control 001 of Volatile Organic Compound Emissions from Paper and Fabric Coating Operations 78-15-3 Consideration of a Proposed Model Rule for the Control of 076 Volatile Organic Compound Emissions from Organic Solvent Degreasing Operations 78-15-4 Other Business - a. Executive Session - Personnel and Litigation b. Research Proposals ITEM NO.: 78-15-2 Consideration of a Proposed Model Rule for the Control of Volatile Organic Compound Emissions from Paper and Fabric Coating Operations. RECOMMENDATION Approve the model rule and direct the staff to transmit it to the South Coast Air Quality Management District, the Bay Area Air Pollution Control District, Ventura County Air Pollution Control District, and air pollution control districts in the Southeast Desert Air Basin. SUMMARY The staff of the Air Resources Board has identified the need to reduce organic compound emissions from sources, including paper and fabric coating operations, in a number of air basins where the ambient air quality standard for oxidant has been exceeded on numerous occasions. Among paper and fabric products that are coated with compounds containing organic solvents are magnetic tape, packaging paper, adhesive tape, book covers, post cards, office copier paper, drafting paper, carbon paper, pressure sensitive tape, typewriter ribbon, photographic film fabric reinforced plastics, and woven fabric or vinyl coated fabric sheets. Statewide emissions of volatile organic compounds from 29 paper coaters and 13 fabric coaters are more than 33 tons per day. The majority of these sources are located in the South Coast Air Basin and the San Francisco Bay Area Air Basin. Most of the emissions (at least 90 percent) from paper and fabric coating operations emanate from the curing ovens. Control devices, such as afterburners and carbon adsorbers, are very effective in controlling these emissions. Table of Contents Page I. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 II. Conclusions and Recommendation. . . . . . . . . . . . . . . . . . . .2 A. Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . . .2 B. Recommendation . . . . . . . . . . . . . . . . . . . . . . . . .5 Proposed Model Rule. . . . . . . . . . . . . . . . . . . . . . .6 III. Discussion of Model Rule. . . . . . . . . . . . . . . . . . . . . . .8 IV. Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 A. Rule Development . . . . . . . . . . . . . . . . . . . . . . . 10 B. Effects of Existing Organic Solvent Rules. . . . . . . . . . . 13 C. Paper and Fabric Coating Operations. . . . . . . . . . . . . . 14 D. Overview of Industry . . . . . . . . . . . . . . . . . . . . . 16 V. Emissions Estimates . . . . . . . . . . . . . . . . . . . . . . . . 17 VI. Potential Emission Reduction Techniques . . . . . . . . . . . . . . 21 A. Incineration . . . . . . . . . . . . . . . . . . . . . . . . . 21 1. Model Plants. . . . . . . . . . . . . . . . . . . . . . . 22 2. Existing Plants . . . . . . . . . . . . . . . . . . . . . 25 B. Carbon Adsorption. . . . . . . . . . . . . . . . . . . . . . . 28 1. Model Plants. . . . . . . . . . . . . . . . . . . . . . . 28 2. Existing Plant. . . . . . . . . . . . . . . . . . . . . . 29 C. Absorption . . . . . . . . . . . . . . . . . . . . . . . . . . 32 D. Low Solvent Coatings . . . . . . . . . . . . . . . . . . . . . 35 1. Hot Melt coatings . . . . . . . . . . . . . . . . . . . . 35 2. Waterborne Coatings . . . . . . . . . . . . . . . . . . . 36 3. Ultraviolet Cured Coatings. . . . . . . . . . . . . . . . 37 VII. Economic and Environmental Impacts. . . . . . . . . . . . . . . . . 39 A. Economic Effects . . . . . . . . . . . . . . . . . . . . . . . 39 B. Energy Impact. . . . . . . . . . . . . . . . . . . . . . . . . 40 C. Other Environmental Impacts. . . . . . . . . . . . . . . . . . 43 1. Emissions of Other Pollutants . . . . . . . . . . . . . . 43 2. Water . . . . . . . . . . . . . . . . . . . . . . . . . . 43 3. Solid Waste . . . . . . . . . . . . . . . . . . . . . . . 44 List of Tables Table V-1: Estimate of Organic Solvent Emissions from Use of . . . . 18 Paper and Fabric Coatings in air Basins of California, 1976 Table V-2: Estimate of VOC Emissions from Paper and Fabric Coaters in California . . . . . . . . . . . . . . . . . . 20 Table VI-1: Incineration Costs for a Small Model Plant. . . . . . . . 23 Table VI-2: Incineration Costs for a Large Model Plant. . . . . . . . 24 Table VI-3: Carbon Adsorption Costs for a Small Model Plant . . . . . 30 Table VI-4: Carbon Adsorption Costs for a Large Model Plant . . . . . 31 ITEM NO.: 78-15-3 Consideration of a Proposed Model Rule for the Control of Volatile Organic Compound Emissions from Organic Solvent Degreasing Operations. RECOMMENDATION Approve the model rule and direct the staff to transmit it to the South Coast Air Quality Management District, the Bay Area air Pollution Control District, the San Diego County Air Pollution Control District, and air pollution control districts in the North Central Coast, Sacramento Valley, San Joaquin Valley, South Central Coast, and Southeast Desert air Basins. SUMMARY The staff of the Air Resources board has identified the need to reduce organic compound emissions from sources including degreasing operations in which organic solvents are used, in a number of air basins where the ambient air quality standard for oxidant has been exceeded on numerous occasions. Organic solvent degreasing is the process of cleaning materials, such as oil, dirt, and grease from surfaces by dissolving or dispersing them with organic compounds which do not adhere to the surfaces being cleaned. Organic solvent degreasing is performed primarily in the aircraft parts manufacturing industry and in the automotive, oil well, railroad, and aircraft maintenance industries. Organic solvent degreasing processes are estimated to generate 117 tons per day (43 tons per day are photochemically reactive) of organic compound emissions. Existing organic solvent regulations stipulate that emissions from the use of photochemically reactive solvents be reduced by 85 percent by weight. However, the definition of photochemically reactive solvents in the existing regulations includes only unsaturated compounds (except perchloroethylene), aromatic compounds, and branched-chained ketones. This definition of photochemically reactive solvents was based upon now outdated smog chamber experiments which failed to consider the reactivity of organic compounds under solar irradiation periods which were long enough to reflect typical atmospheric conditions in California. The proposed model rule parallels the existing district rules in that, for vapor degreasing, and 85 percent reduction in emissions of photochemically reactive compounds is required. However, in the proposed model rule, all organic solvents are considered to be photochemically reactive, except 1,1,1,trichloroethane, methylene chloride, and trichlorotrifluoroethane. The use of these three compounds presently accounts for 44 percent of the total emissions from degreasing operations. The proposed model rule also specifies certain operating and equipment requirements, the most significant of which being the disposal of waste solvent in a manner which will not allow its evaporation into the atmosphere. For cold solvent degreasing, the proposed model rule requires operating practices and the use of equipment which would effectively control organic emissions. The staff estimates that an emission reduction of 13 tons per day in reactive volatile organic compounds could be achieved through adoption of the proposed model rule. The cost-effectiveness of the controls prescribed in the model rule is estimated to range from $0.01 per pound to $0.13 per pound of VOC emissions reduced. Table of Contents Page I. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 II. Conclusions and Recommendation. . . . . . . . . . . . . . . . . . . .2 A. Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . . .2 B. Recommendation . . . . . . . . . . . . . . . . . . . . . . . . .4 III. Discussion of Model Rule. . . . . . . . . . . . . . . . . . . . . . 10 IV. Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 A. Discussion of Rule Development . . . . . . . . . . . . . . . . 11 B. Effects of Existing Organic Solvent Rules. . . . . . . . . . . 13 C. Organic Solvent Decreasing Processes . . . . . . . . . . . . . 15 D. Industry Overview. . . . . . . . . . . . . . . . . . . . . . . 26 V. Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 A. Manufacturing Industry . . . . . . . . . . . . . . . . . . . . 28 B. Maintenance Industries . . . . . . . . . . . . . . . . . . . . 30 C. Potential Emission Reduction . . . . . . . . . . . . . . . . . 36 VI. Emission Control Technology . . . . . . . . . . . . . . . . . . . . 40 A. Organic Solvent Degreasing Controls. . . . . . . . . . . . . . 40 1. Improved Covers . . . . . . . . . . . . . . . . . . . . . 40 2. Refrigerated Chillers . . . . . . . . . . . . . . . . . . 42 3. Carbon Adsorption . . . . . . . . . . . . . . . . . . . . 43 4. Incineration. . . . . . . . . . . . . . . . . . . . . . . 44 5. Safety Switches . . . . . . . . . . . . . . . . . . . . . 45 6. Drainage Facility . . . . . . . . . . . . . . . . . . . . 47 7. Increased Freeboard . . . . . . . . . . . . . . . . . . . 48 8. Drying Tunnels. . . . . . . . . . . . . . . . . . . . . . 49 9. Rotating Baskets. . . . . . . . . . . . . . . . . . . . . 49 10. Minimal Openings. . . . . . . . . . . . . . . . . . . . . 50 11. Waste Solvent Disposal. . . . . . . . . . . . . . . . . . 50 B. Alkaline Washing . . . . . . . . . . . . . . . . . . . . . . . 54 1. Saponification. . . . . . . . . . . . . . . . . . . . . . 54 2. Wetting Action. . . . . . . . . . . . . . . . . . . . . . 54 3. Emulsification. . . . . . . . . . . . . . . . . . . . . . 55 4. Dispersion. . . . . . . . . . . . . . . . . . . . . . . . 55 5. Aggregation . . . . . . . . . . . . . . . . . . . . . . . 55 C. Emulsion Cleaning. . . . . . . . . . . . . . . . . . . . . . . 59 VII. Impacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 A. Economic Effects . . . . . . . . . . . . . . . . . . . . . . . 63 1. General . . . . . . . . . . . . . . . . . . . . . . . . . 63 2. Cold Cleaning . . . . . . . . . . . . . . . . . . . . . . 63 3. Open-top Vapor Degreasing and Conveyorized Degreasing . . 64 B. Environmental Impact. . . . . . . . . . . . . . . . . . . . . . . . 65 1. Air Pollution Impact. . . . . . . . . . . . . . . . . . . 65 2. Water Pollution Impact. . . . . . . . . . . . . . . . . . 66 3. Solid Waste Disposal. . . . . . . . . . . . . . . . . . . 66 4. Energy Impact . . . . . . . . . . . . . . . . . . . . . . 66 5. Industrial Hygiene. . . . . . . . . . . . . . . . . . . . 67 6. Other Effects . . . . . . . . . . . . . . . . . . . . . . 68 Appendix A - Organic Solvent Degreasing Emissions Determination Questionnaire Appendix B - Consultation Meeting for Tentative Degreasing Operations Workshop Notice