In the past 20 years air quality has generally been improving throughout much of the U.S. However, there is growing concern about visibility, air quality, & certain respiratory illnesses in & near Great Smoky Mountains Nat. Park on the North Carolina-TN border. In light of these concerns about the park & adjacent areas, this report analyzes recent trends in & contributing factors to (1) visibility impairments, (2) ground-level ozone, & (3) respiratory illnesses. In addition, it examines the TVA's plans to reduce its emissions of regulated pollutants from generating electricity. The review focused on the period from 1990 to 1999. Charts, tables & maps.Stephenson, John B. is the author of 'Air Pollution Air Quality and Respiratory Problems in and Near the Great Smoky Mountains' with ISBN 9780756715489 and ISBN 0756715482.