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References ADEQ (Arizona Department of Environmental Quality). 1989. EPA Air Docket, A-89-02, II-D-06. Environmental Protection Agency, Washington, D.C. Balling, R.C., Jr., and J.L. Sutherland. 1988. Diurnal and seasonal wind direction pattern within the mountain-valley terrain near Glen Canyon Dam, Arizona. J. Appl. Meteor. 27:59~598. Buat-Menard, P., H. (::achier, and R. Chesselet. 1989. Sources of particulate carbon in the marine atmosphere. P. 252 in Chemical Oceanography, J.P. Riley, R. Chester, and R. Duce, eds. Vol. 10. New York: Academic Press. California Air Resources Board. 1990. Emission Inventory for 1987. Techni- cal Support Division, Emission Inventory Branch. Sacramento, CA: Cali- fornia Air Resources Board. Chinkin, L.R., and D^. Latimer, and H. Hogo. 1986. Layered haze observed at Bryce Canyon National Park: A statistical evaluation of the phenome- non. Pp. 709-735 in Transactions of the APCA International Specialty Conference: Visibility Protection, Research and Policy Aspects, P.S. Bhar- dwaja, ed. Pittsburgh, PA: Air Pollution Control Association. EIA (Energy Information Administration). 1987. Electric Power Quarterly. DOE/EIA-0397~87~1Q. Energy Information Administration. Washington, D.C.: U.S. Department of Energy. Malm, W.C. 1990. Presentation to the National Research Council Commit- tee on Haze in National Parks and Wilderness Areas. March 28, 1990. Grand Canyon National Park, AZ. Maim, W.C., and E.G. Walther. 1979. Reexamination of turbidity measure- ments near Page, Arizona, and Navajo Generating Station. J. Appl. Mete- or. 18~7~:953-955. 39

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40 HAZEIN THE GRAND CANYON . - NPS (National Park Service). 1989. National Park Service Report on the Winter Haze Intensive Tracer Experiment (WHITEX). Final Report, December 4. Air Quality Division, National Park Service, Ft. Collins, CO. Richards, L.W., J. A. Anderson, D. L. Blumenthal, A. A. Brandt, J. A. Mc- Donald, N. Walters, E. S. Macias, and P. S. Bhardwaja. 1981. The chemis- try, aerosol physics, and optical properties of a western coal-fired power plant plume. Atmos. Environ. 15:2111-2134. (SRP) Salt River Project. 1971. The Navajo Power Project and Environmen- tal Protection Plans. Brochure #CR16-470-25C. Salt River Project: Phoenix, AZ. SCENES (Sub-Regional Cooperative Electric Utility, Department of Defense, National Park Service, and Environmental Protection Agency Study on Visibility). 1987. Winter Haze Intensive Tracer Experiment (WHITEX). SCENES Newsletter 1(2~:1-4. (SAI) System Applications, Inc. 1985. Modeling Regional Haze in the South- west: A Preliminary Assessment of Source Contributions. SYSAPP- 85/038. San Rafael, CA.: Systems Applications Publication Center. Trijonis, J., R. Charison, R. Husar, W. Maim, M. Pitchford, and W. White. 1989. Visibility: Existing and Historical ConditionsCauses and Effects. State-of-Science and State of Technology Report No. 24, Draft for Public Review. National Acid Precipitation Assessment Program (NAPAP). Washington, D.C.: National Acid Precipitation Assessment Program. U.S. Congress (House). 95th Cong., 1st Sess. 1977. The Clean Air Act - Amendments of 1977, a report by the Committee on Interstate and Foreign Commerce. H. Report No. 95-294:43-51. U.S. EPA (Environmental Protection Agency). 1980. Visibility Protection for Federal Class I Areas: Final Rule. Fed. Reg. 45~233~:8008480095. U.S. EPA (Environmental Protection Agency). 1989. Assessment of Visibility Impairment: Proposed Rule. Fed. Reg. 54~170~:36948-36953. Van Valin, C.C., J.D. Ray, J.F. Boatman, and R.L. Gunter. 1987. Hydrogen peroxide in air during winter over the south-central United States. Geo- phys. Res. Lett. 14:1146-1149. Walther, E.G., and W.C. Malm. 1979. The excellent but deteriorating air quality in the Lake Powell region. APCA Journal 29~4~:378-380.

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