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Appendix B Table 5 Comparison of Monday Routes - July and October Eight samples were sorted from two Monday routes. % Four samples were sorted from two Monday routes. J The totals may not equal the sum of the material categories due to rounding. The upper and lower confidence intervals from both the September and October Monday single stream pilot routes were significantly different than those of the July (pre- pilot) dual stream route. The September and October Monday single stream pilot route results were quite similar, with no significant difference between confidence intervals. Because the comparison of the "before" pilot Monday routes to the "during" pilot Monday routes reflected statistically significant differences for each of the categories, we calculated estimated quantities of materials. Table 6 shows the material compositions by weight, derived from applying the median percentages for each material category obtained from the recyclable material sorting events to the average of the pilot route truck weights for each of the Monday routes. B-6 B1605 Monday Dual Stream Routes' Monday Single Stream Routesz July October Statistically 90% Confidence 90% Confidence Significant Interval Interval Difference Material Mean Lower Upper Mean Lower Upper Category Paper 57.9% 54.5% 61.3% 77.0% 74.0% 80.0% ✓ Metals 7.9% 7.3% 8.5% 2.4% 1.8% 3.0% ✓ Glass 19.7% 16.4% 23.0% 5.7% 4.3% 7.1% ✓ Plastic 10.7% 9.0% 12.4% 4.9% 4.1% 5.7% ✓ Contaminants 3.9% 2.1% 5.7% 9.9% 8.8% 11.0% ✓ Total3 100% n/a n/a 100% n/a n/a Eight samples were sorted from two Monday routes. % Four samples were sorted from two Monday routes. J The totals may not equal the sum of the material categories due to rounding. The upper and lower confidence intervals from both the September and October Monday single stream pilot routes were significantly different than those of the July (pre- pilot) dual stream route. The September and October Monday single stream pilot route results were quite similar, with no significant difference between confidence intervals. Because the comparison of the "before" pilot Monday routes to the "during" pilot Monday routes reflected statistically significant differences for each of the categories, we calculated estimated quantities of materials. Table 6 shows the material compositions by weight, derived from applying the median percentages for each material category obtained from the recyclable material sorting events to the average of the pilot route truck weights for each of the Monday routes. B-6 B1605