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7 

 Through a cooperative effort, identify and recommend 

 reasonable measures to remedy existing and to prevent future 

 adverse effects from human-induced air pollution on the air 

 quality related values of the Southern Appalachians, primarily 

 those of the Class I park and wilderness areas, weighing the 

 environmental and socio-economic implications of any 

 recommendations . 



We will try to ensure that New Source Review Reform and SAMI will 

 produce measures that will improve protection for Class I area 

 resources. However, the negotiations are difficult, and the 

 abilities of the various interests to participate are not equal. 

 In addition, these efforts are voluntary and advisory, and have no 

 mandatory deadline or outcome. 



Visibility Protection Developments and Issues. Although the 1990 

 GAO Report did not focus on visibility issues, Mr. Chairman, you 

 asked about these issues during the March 1990, hearing, and 

 subsequently asked GAO to focus their efforts on these issues. I 

 shall summarize matters relating to the Navajo Generating Station, 

 the Grand Canyon Visibility Transport Commission, the National 

 Research Council's visibility report, and our thoughts on regional 

 haze regulations. 



Based largely on the National Park Service's technical analyses, 

 the EPA promulgated a rule on October 3, 1991, to require the 



85-822 0-95-6 



