| The Environmental Protection Agency is amending a variety of testing and monitoring requirements in the Resource Conservation and Recovery Act (RCRA) hazardous and nonhazardous solid waste regulations and for certain Clean Air Act (CAA) regulations that relate to hazardous waste combustors. These amendments allow more flexibility when conducting RCRA-related sampling and analysis by removing from the regulations a requirement to use the methods found in '‘Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,' also known as 'SW–846,' in conducting various testing and monitoring and by limiting required uses of an SW–846 method to circumstances where the method is the only one capable of measuring the particular property (i.e., the method is used to measure a required method-defined parameter). |