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Appendix A Test, dated October 18, 2003, was provided to the Project Team by WM. (See Attachment A -2 for a more detailed discussion and analysis of this WM study.) The report provides summary information resulting from the sorting and analyses performed by WM at their Twin Cities MRF. The purpose for the test was to determine the resulting material constituents resulting from single -sort recycling collection and processing. WM reported that the resulting "Residue Fraction of Processed Materials" from this test was 5.95 percent. WM stated that unrecoverable materials were defined as materials not targeted for recycling at the Twin Cities MRF. The WM report provided a separate breakdown of products and process residue from both the "single- stream process system" (i.e., paper recovery line) and the "container process system" (i.e., container recovery line). The first paper ( "single- stream ") line produced about two percent residue of total input. The second, container line produced about four percent residue of total input. Color- mixed, broken glass was not considered residue by the study and represented 11 percent of the total input. Color - sorted glass, in contrast, represented two percent of total input. The residue estimate of 5.95 percent of total input is reasonable if the mixed - color, broken glass is assumed to be a marketed, recycled commodity. If not, the total residue, including such mixed -color glass, is about 17 percent. The other constituents of the residue make up a minor fraction (e.g., film plastic such as bags, fluff, fines, grit, other trash, and floor sweepings). Therefore, one of the key, remaining questions not answered by the WM report is how much more does mixed - color, broken glass increase within the single- stream process system at the WM Minneapolis MRF as compared to glass from two stream collections processed directly into the container process system at the MRF. Without a comparable two -sort test and analysis, it is not possible for the Project Team to estimate. Other Available Data Several other studies and municipal recycling contracts are relevant to this analysis of processing residuals. Eureka Recycling (Minneapolis, MN), under its former structure within the Saint Paul Neighborhood Energy Consortium, published an extensive study of a similar pilot collection study as conducted in 2001. Six different collection pilot routes were established similar to the Roseville pilot study design. (For more details, see Eureka Recycling's web page: www.EurekaRecycline.ore.) The Eureka study analyzed their pilot results for many of the same variables, including: ■ Percent increase in tons recycled; • City -wide materials that could be collected (as projected by pilot results); • Percent material loss during processing; • Net program material recycled; and • Net overall percent increase in tons recycled. A -4 B1605