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Page 2 of 2 <br /> Attached are the reports I re erred to in our phone conversation yesterday. One shows the TCLP results for Solvair still <br /> residue. Another shows the TCLP results for the filter elements from a Solvair system. Also attached are the aquatic <br /> toxicity test results from used filter elements obtained from a Solvair system and the aquatic toxicity test results for two <br /> samples of Solvair still residue. These samples were obtained from Solvair systems processing commercial drycleaning. <br /> In reviewing the attached files I noticed that only the first page of the report for the filter cartridge components were <br /> scanned. I will have the re aining pages scanned and forwarded to you tomorrow. <br /> Please note that the filter el ments are comprised of metal structural components, pleated paper used to trap insoluble <br /> materials, and activated gra ular carbon. The sample of paper submitted for analysis included two samples of paper <br /> taken from different section of the paper element of one cartridge. Likewise, the sample of carbon submitted for analysis <br /> was comprised of three aliqots taken from different areas in the carbon chamber of one cartridge. Each sample was <br /> analyzed independently of t e others. Consequently, the results are reported as if each component represented the <br /> entire cartridge. This in tur resulted in artifically high numbers. The estimated weight percent represented by the paper <br /> and carbon in a single spen filter element are 54% and 30%, respectively. <br /> These results suggest that t e Solvair still residue will not currently meet the requirements of the California non-hazardous <br /> waste characteristics. For or <br /> e filter elements, however, the results suggest that the spent filter cartridges are non- <br /> hazardous. <br /> Please feel free to contact me if you have any questions, concerns, or comments regarding this information. <br /> Best regards, <br /> Tim Racette <br /> Vice President- Research nd Development <br /> Solvair LLC <br /> 184 Shuman Blvd. <br /> Suite 420 <br /> Naperville, IL 60563 <br /> P: 630 416 6221 <br /> 10/20/2008 <br />