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<br />- <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />.. <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />- <br /> <br />.-- <br /> <br />........-:- <br />'.:"".: '-: <br /> <br />"",-,'-,'. ' <br />'.,....'~, ""-~~_-':"~ <br /> <br />Tv?;l <br /> <br />Division: AIr Pollution Control Division <br />James M~ Lents~ Direetor <br /> <br />6. Asbestos and benzene exposure intervention strategy - In Colorado there Is currently some population exposure to benzene and asbestos. Any <br />human contact with asbestos Is undesirable and continuing exposure to benzene Is undesirable. Asbestos emissions in the atmosphere come from <br />demolition or renovation, application of material. and storage and dIsposal of material. Benzene emissions come from Industrial processes, and <br />vehicular refueling and evaporations. Contributing factors which impact on the direct causes of population exposure to asbestos and benzene <br />which are technically and realistically intervenable include: (1) level of control on stationary sources; and (2) product usage and <br />availability. If these causes are addressed through available technology exposure levels will decline from (est. not available) to zero <br />exposure by June 30. 1985. <br /> <br />7. Non-criteria pollutant intervention strategy - In Colorado there is currently some population exposure to non-criteria pollutants (!.:.!.:. vinyl <br />chloride. beryllium. mercury. etc.). Prolong human contact through exposure to atmospheric levels is unhealthful. Sources of the non-criterla <br />pollutants are from major and minor source stationary source emissions and from emissions fro. diesel and gasoline vehicle engines. <br />Contributing factors which impact on the direct causes of population exposure to non-criteria pollutants which are technically and <br />realistically intervenable include: (1) level of control on stationary sources. (2) fuel usage and production rate; (3) emission control <br />technology on gasoline and diesel engines and (4) emission standards for gasoline and diesel engines. If these causes are addressed thrOUgh <br />available technology exposure levels may decline from (est. not available) to (est. not available) by June 30. 1985. <br /> <br />8. Intervention strategy to maintain good air quality in attainment and pristine areas - In Colorado there are currently areas where air quality <br />is well below national health standards for particulate matter and sulfur oxide. These areas include national parks. national monuments. and <br />wilderness areas. Regulation has defined the nature of impacts from major and minor sources as being the principal causes of this <br />deterioration. Contributing factors which impact on the direct causes good air quality maintenance in attainment and pristine areas in <br />Colorado which are technically and realistically intervenable include: (1) level of control on stationary sources; and (2) fuel usage and <br />pr oduc t demand. <br /> <br />9. Intervention strategy to assure visibility protection in urban areas and rural areas - The visibility problem is currently more noticeable in <br />urban areas than in rural or open vistas. Since there is no current on-going measurement program visual degradation is based upon several <br />special studies that have been performed. Since visibility is related to perception a number of attributes related to this including distance. <br />clarity, color. and border. The causes of disibl1ity impairment in rural and urban areas sre major and ainor stationary sources. residential <br />space heating, open burning, auto usage. and gasoline and diesel combustion. Contributing factors which impact on the direct causes of <br />visibility reduction in urban and rural areas which are technically and realistically intervenable include: (1) level of control on stationary <br />sources; (2) fuel usage and production rate; (3) type of activity; (4) vehicular volumes; (5) travel patterns; (6) fleet distribution; (7) <br />emission control technOlogy; and (8) fleet make-up. <br /> <br />10. Intervention strategy to minimi~e impact on sensitive areas (e.g. National Parks. National Monument. and Wilderness areas). - The Federal Land <br />~1anager has identified a numbe'r of air quality impacted (or related) values that must be protected such as stream/lake audification and <br />vegetation damage. These impacts are caused by major and minor stationary sources and secondary sources. Contributing factors which impact <br />on the direct causes of sensitive areas in pristine areas in Colorado which are technically and realistically intervenable include: (1) level <br />of control on stationary sources; (2) fuel usage and production demand. Of each of these causes are addressed through available technology <br />then impact on these sensitive areas will be minimized through June 30. 1985. ' <br /> <br />-43- <br />