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Appendix B <br />Table 5 <br />Comparison of Monday Routes -July and October <br /> Monday Dual Stream Routes' Monday Single Stream Routesz <br /> Jul October <br /> Statistically <br /> 90% Confidence 90% Confidence Significant <br /> Interval Interval Difference <br /> <br />Material Mean Lower Upper Mean Lower Upper <br />Cate o <br />Paper 57.9% 54.5% 61.3% 77.0% 74.0% 80.0% / <br />Metals 7.9% 7.3% 8.5% 2.4% 1.8% 3.0% / <br />Glass 19.7% 16.4% 23.0% 5.7% 4.3% 7.1 % / <br />Plastic 10.7% 9.0% 12.4% 4.9% 4.1 % 5.7% / <br />Contaminants 3.9% 2.1 % 5.7% 9.9% 8.8% 11.0% / <br />Total3 100% n/a n/a 100% n/a n/a <br />~ Eight samples were sorted from two Monday routes. <br />z Four samples were sorted from two Monday routes. <br />3 The totals may not equal the sum of the material categories due to rounding. <br />The upper and lower confidence intervals from both the September and October <br />Monday single stream pilot routes were significantly different than those of the July <br />(pre-pilot) dual stream route. The September and October Monday single stream pilot <br />route results were quite similar, with no significant difference between confidence <br />intervals. <br />Because the comparison of the "before" pilot Monday routes to the "during" pilot <br />Monday routes reflected statistically significant differences for each of the categories, <br />we calculated estimated quantities of materials. Table 6 shows the material <br />compositions by weight, derived from applying the median percentages for each <br />material category obtained from the recyclable material sorting events to the average <br />of the pilot route truck weights for each of the Monday routes. <br />B-6 Bros <br />