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Appendix B Table 7 Comparison of Single Stream and Dual Stream Routes September Single Stream (Monday) Dual Stream (Tues-Friday) Routes' Routesz Statistically 90% Confidence Interval 90% Confidence Interval Significant Difference Material Mean Lower Upper Mean Lower Upper Category Paper 78.7% 75.0% 82.4% 58.6% 53.5% 63.7% / Metals 2.8% 2.0% 3.6% 6.6% 5.9% 7.3% / Glass 5.3% 4.4% 6.2% 20.7% 14.4% 27.0% / Plastic 6.0% 4.8% 7.2% 10.7% 7.6% 13.8% / Contaminants 7.1% 5.8% 8.4% 3.5% 2.6% 4.4% / Total3 100% n/a n/a 100% n/a n/a ~ Four samples were sorted from the single stream routes. s Twelve samples were sorted from the dual stream routes. s The totals may not equal the sum of the material categories due to rounding. Table 8 Comparison of Single Stream and Dual Stream Routes October Single Stream (Monday) Routes ~ Dual Stream (Tues-Friday) Routes z 90% Confidence 90% Confidence Statistically Interval Interval Significant Difference Material Mean Lower Upper Mean Lower Upper Category Paper 77.0% 74.0% 80.0% 63.9% 56.5% 71.3% / Metals 2.4% 1.8% 3.0% 7.5% 5.5% 9.5% / Glass 5.7% 4.3% 7.1 % 16.4% 10.9% 21.9% / Plastic 4.9% 4.1 % 5.7% 8.6% 6.0% 11.2% / Contaminants 9.9% 8.8% 11.0% 3.5% 2.5% 4.5% / Total3 100% n/a n/a 100% nla n/a ~ Four samples were sorted from the single stream routes. z Fourteen samples were sorted from the dual stream routes. 3 The totals may not equal the sum of the material categories due to rounding. The upper and lower confidence intervals of the September and October Monday single stream pilot routes were significantly different than the September and October dual stream routes. B-8 Bt6os