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3422es_e.htm at mend20*1rcan.gc.ca • Page 4 of 4 <br /> on the samples tested, this work has underlined that while sludge stability is an issue, <br /> greater emphasis should be placed on sludge disposal and volume reduction. <br /> • Numerous leach protocols have been developed to test solid wastes. None of these <br /> leaching tests have been specifically designed for evaluating AMID treatment sludge <br /> leachability. A thorough review of regulatory and research leach protocols from <br /> Canada and the United States is provided. While regulatory leach tests for <br /> classification of hazardous wastes in Canada involve the use of acetic acid in the <br /> protocol, more appropriate tests, such as the Modified LEP, need to be considered for <br /> assessing the leachability of AMD treatment sludges for on-site disposal in a pond <br /> environment. Ultimately, the context within which sludge leachability (stability) is <br /> measured must be kept in mind when a leach test is applied. <br /> In most provinces and territories, the testing of AMD treatment sludge and its <br /> storage/disposal is controlled by site-specific licences or permits based on appropriate <br /> legislation. A review of Canadian and American hazardous waste regulations, and <br /> other pertinent regulations and guidelines as they apply to the leachability testing of <br /> AMD treatment sludges is provided. <br /> http://mend2000.nrcan.gc.ca/reports/3422es_e.htm 1/18/99 <br />