This manual provides test procedures and guidance which are recommended for use in conducting the evaluations and measurement needed to comply with the resource Conservation and Recovery Act (RCRA), Public law 94-580, as amended. This manual presents the state-of-the-art in routine analytical tested adapted for the RCRA program. It contains procedures for field and laboratory quality control, sampling, determining hazardous constituents, in wastes, determining the hazardous characteristics of wastes (toxicity, ignitability, reactivity, and corrosivity), and for determining physical properties of wastes. It also contains guidance on how to select appropriate methods.