An electronic version of this valuable manual from the Environmental Protection Agency (EPA), Office of Solid Waste, provides test procedures and guidance which are recommended for use in conducting the evaluations and measurements needed to comply with the Resource Conservation and Recovery Act (RCRA), Public Law 94-580, as amended. These methods are approved by the U.S. EPA for obtaining data to satisfy the requirements of 40 CFR, Parts 122 through 270, promulgated under RCRA, as amended. This manual presents the state of the art in routine analytical tests 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. Final Update IIA & IIB are the most recent promulgated updates by EPA. The entire SW-846 manual with updates integrated including images of illustrative diagrams, chromatograms and flow diagrams is now available on CD-ROM. This CD-ROM is being developed by the Environmental Protection Agency (EPA), Office of Solid Waste in cooperation with the National Technical Information Service (NTIS). Version 1.0 contains the Third Edition Base Manual with Final Updates I, II, IIA, and IIB. With the SW-846 CD-ROM, you can: 1. Receive the complete, official, up-to-date, set of SW-846 methods with integrated diagrams and flowcharts on a single disc. 2. Search by chemical name, CAS number, method number, or keyword to find suitable methods. 3. View or print a page or the entire method with valuable embedded diagrams, figures, and flowcharts. 4. Cut and paste text, diagrams and flowcharts to update Standard Operating Procedures in your own word processor. 5. Use the new Analyte to Crossreference Table to select recommended methods by chemical name. Updated as EPA promulgates major updates, the SW-846 CD-ROM eliminates the need to manually update the paper copy manual and ensures you are always working with the most current version. Next update will contain Final Update III.