This article is based on a presentation given at A&WMA’s 94 Annual Conference & Exhibition in June in Orlando, FL. It describes a comprehensive multisite test program to demonstrate mercury control at four full-scale power plants. Tests results from three of these sites will be presented for the first time at A&WMA’s Specialty Conference on Mercury, “Mercury Emissions: Fate, Effects, and Contro...

Biochemical degradation test of food coal-tar dyes using sludge was studied in order to evaluate their safety. It was found that some dyes were little decomposed under aerobic condition but four azo dyes were readily decomposed under anaerobic condition. These were Food Yellow No. 4, No. 5, and Food Red No. 2, No. 102. Decomposed products of these four azo dyes by sludge under anaerobic conditi...

AIMS To investigate the validity of empirical models of exposure to bitumen fume and benzo(a)pyrene, developed for a historical cohort study of asphalt paving in Western Europe. METHODS Validity was evaluated using data from the USA, Italy, and Germany not used to develop the original models. Correlation between observed and predicted exposures was examined. Bias and precision were estimated....