Federal Register Notices Related to SW-846
Each time SW-846 is officially updated, the new and revised information is released to the public for comment before publication. Below you can find the Federal Register notices for proposed updates along with the notices for the finalized updates. Federal Register notices are also included for the Methods Innovation Rule (MIR). For a tabular history of each method over time with the approval of each update, see the SW-846 Methods Status Table.
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Select an update to learn more about what it accomplished.
- Update V
This action added eight new and 15 revised methods for inclusion in SW-846. The Agency also finalized revisions to Chapters One through Five of SW-846 and adds the EPA Policy Statement to SW-846.
- Update IV
This action added 24 revised analytical methods and seven revised chapters to SW-846. Chapter 11 of SW-846, which was out of date and no longer relevant, was removed from the compendium.
- Methods Innovation Rule (MIR)
The MIR is an important step toward a performance-based measurement system, and part of the Agency's efforts toward "Innovating for Better Results." In general, the MIR allows more flexibility when conducting Resource Conservation and Recovery Act-related sampling and analysis. For more information, see the Methods Innovation Rule Web page.
- Update III
Update IIIA approved EPA Method 1664, Revision A. The action also removed Method 9070 and added revised Method 9071B.
Update IIIB added 11 revised methods to SW-846 and updated Chapter Seven. It also removed the cyanide and sulfide reactivity guidance from SW-846 Chapter Seven and removed required uses of reactive cyanide and sulfide methods. Additionally, this action clarified the use of SW-846 methods for the corrosivity and ignitability characteristics.
- Update II
Update IIA added Method 4010 to SW-846.
Update II added 62 new and revised methods to SW-846, updated the Abstract and Table of Contents, and updated Chapters Two, Three, and Four. This action also amended Chapter Seven of SW-846 by removing the statement that Method 9095 may be used to determine free liquid.
Update IIB added revised methods 9040B and 9045C, clarifying language regarding the appropriate temperature for pH measurements for highly alkaline materials.
- Third Edition Basic Manual and Update I
This action replaced the Second Edition of SW-846 with the Third Edition of SW-846, which included significant revisions of the entire compendium.