A groundbreaking text and professional resource on natural attenuation technology Natural attenuation is rapidly becoming a widely used approach to manage groundwater and soil contamination by hazardous substances in petroleum-product releases and leachate from hazardous waste sites and landfills. This book provides, under one cover, the current methodologies needed by groundwater scientists and engineers in their efforts to evaluate subsurface contamination problems, to estimate risk to human health and ecosystems through mathematical models, and to design and formulate appropriate remediation strategies. Incorporating the authors' extensive backgrounds as educators, researchers, and consultants in environmental biotechnology and hydrogeology, the text emphasizes new concepts and recent advances in the science, including: Quantification of the role of microbes in natural attenuation Biodegradation and chemical transformation principles Immobilization and phase change Biotransformation mechanisms Groundwater flow and contaminant transport Analytical models for contaminant transport and reaction processes Numerical modeling of contaminant transport, transformation, and degradation Detailed descriptions of fundamental processes, characterization approaches, and analytical and numerical methods tied to relevant real-world applications make Bioremediation and Natural Attenuation: Process Fundamentals and Mathematical Models both a timely course text in hydrogeology and environmental engineering and a valuable reference for anyone in the groundwater or risk assessment professions.
Walter Greaves Cowan and Jack B. McGuire, veteran authorities on the Louisiana political scene, trace the history of the state's leaders from the French and Spanish colonial eras to the present day. Using a variety of sources, including personal interviews with the recent governors, they describe unforgettable personalities. Such early figures as Pierre Le Moyne d'Iberville and Jean Baptiste Le Moyne de Bienville set the tone for later colonial governors. They had their troubles, fending off protesting Indians and other French and Spanish leaders vying for power. Following the Louisiana Purchase, American politics took control. The Whigs, Know Nothings, Republicans, and Democrats have all waxed and waned through times of slavery, secession, suffrage, and segregation. The early twentieth century saw the rise of Huey P. Long, who established himself as a virtual dictator. An assassin's bullet ended Long's life in 1935, but his followers managed to hold on to the governorship until 1940. In 1948 his brother, Earl Long, brought the family back into power. Over the years, two governors were impeached but were not removed from office, and two governors were jailed in federal prison. The experiences, decisions, and conflicts of Louisiana governors have reflected and influenced the history of the state, often in dramatic and fascinating ways.
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