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Appendix B <br />Table 10 <br />Comparison of Material Compositions by Weight' <br />Single Stream - Dual Stream Routes <br />October <br />Average Weight (Pounds) <br />Single Stream Dual Stream <br />Material Category (Monday) (Wed - Friday)' <br />Paper 9,327 5,599 <br />Metals 291 637 <br />Glass 690 1,695 <br />Plastic 594 691 <br />Contaminants 1,199 264 <br />Total 12,101 8,886 <br />' The weights were estimated by applying the median percentages from the sorting <br />events to the average of the pilot route truck tonnages. <br />3 The weights from Tuesday's routes were excluded from the comparison because they <br />represent weekly collection, whereas the Wednesday, Thursday and Friday routes <br />provided more comparable data as they were collected bi- weekly. <br />The results of comparing the single stream and dual stream collection methods in <br />September and October include: <br />• The single stream routes yielded increased quantities of paper compared to the <br />dual stream routes. <br />• The single stream routes generated less quantities of metals, glass and plastics <br />than the dual stream routes. <br />• The quantities of contaminants in the single stream routes were higher than the <br />quantities of contaminants found in the dual stream routes. <br />No conclusions are drawn as to the magnitude of the differences by weight because <br />the weights represent only the median percentages. <br />Table 11 below shows a comparison of the four single stream routes to the six dual <br />stream routes during the pilot (September and October). <br />B-10 B1605 <br />