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<br />March 23, 2005 <br />Page 9 <br /> <br />Table 8 <br />Comparison of Single Stream and Dual Stream Routes <br />October <br /> <br /> Single Stream (Monday) Routes 1 Dual Stream (Tues-Friday) Routes 2 <br /> 90% Confidence 90% Confidence Statistically <br /> Interval Interval Significant <br /> Difference <br />Material Mean Lower Upper Mean Lower Upper <br />Category <br />Paper 77.0% 74.0% 80.0% 63.9% 56.5% 71.3% "' <br />Metals 2.4% 1.8% 3.0% 7.5% 5.5% 9.5% "' <br />Glass 5.7% 4.3% 7.1% 16.4% 10.9% 21.9% "' <br />Plastic 4.9% 4.1% 5.7% 8.6% 6.0% 11.2% "' <br />Contaminants 9.9% 8.8% 11.0% 3.5% 2.5% 4.5% "' <br />Total3 100% nJa nJa 100% nJa nfa <br /> <br />1 Four samples were sorted from the single stream routes. <br />2 Fourteen samples were sorted from the dual stream routes. <br />JThe totals may not equal the sum of the material categories due to rounding. <br /> <br />The upper and lower confidence intervals of the September and October Monday single stream <br />pilot routes were significantly different than the September and October dual stream routes. <br /> <br />Because a statistically significant difference was found, the median percentages for each <br />material category that were derived from the September and October recyclable material sorting <br />events were applied to the averages of the pilot route truck weights to estimate material <br />compositions by weight. The average estimated quantities from the September single stream <br />(Monday) routes are compared to the average estimated quantities of the September dual stream <br />bi-weekly routes (Wednesday through Friday) in Table 9. <br /> <br />01-00253-10101-01011070001 I 13500 P:\13500 Ramsey Co. 2003\RTA\Roseville\FA\B1544 - Final Data Analysis <br />