Because environmental problems are uncovered almost daily, both new regulations & technologies are continuously being developed to meet the challenges of solving them. As a result, the definitions for many past terms are revised & many new terms are generated each year. The new Environmental Engineering Dictionary, 3rd Edition, combines both the new & the revised for a completely updated & comprehensive collection of more than 14000 environmental terms. The new 3rd Edition covers all the major environmental fields & includes exact & official Environmental Protection Agency (EPA) definitions for statute-related, regulation-related, & environmental engineering terms & environmentally-related science terms. Many of these terms include time-saving references to the definition's source, including the Code of Federal Regulations (CFRs), the EPA, & the Department of Energy (DOE).