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What required SW-846 uses will not be removed?

April 26, 2017removed sw-846 uses

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What required SW-846 uses will not be removed?

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Any required use of SW-846 that involves a method-defined parameter (MDP) will be retained in the RCRA regulations. An MDP is a regulated parameter or property where by a particular method is the only one that is capable of measuring the property. A commonly used method for measurement of an MDP is the Toxicity Characteristic Leaching Procedure (TCLP). Waste generators must test their waste using SW-846 Method 1311 (TCLP) [Adobe PDF File, 35 pages, 288 KB, about PDF] to determine whether the waste leaching potential is greater than the TC levels specified in 40 CFR 261.24. No other test is known to yield the same leachate concentrations as Method 1311, the TCLP, so we describe the results obtained from Method 1311 as a required method-defined parameter. Therefore, you must use MDP methods as written during compliance with a particular regulation. The list of MDP methods can be found in 40 CFR Part 260.11.