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Data Analysis of City of Roseville Recyclable Materials <br />Because a statistically significant difference was found, the median percentages for <br />each material category that were derived from the September and October recyclable <br />material sorting events were applied to the averages of the pilot route truck weights to <br />estimate material compositions by weight. The average estimated quantities from the <br />September single stream (Monday) routes are compared to the average estimated <br />quantities of the September dual stream bi-weekly routes (Wednesday through Friday) <br />in Table 9. <br />Table 9 <br />Comparison of Material Compositions by Weight <br />Single Stream -Dual Stream Routes <br />September <br /> Average Weight (Pounds) <br /> Single Stream Dual Stream <br />Material Category (Monday) (Wed - Friday)z <br />Paper 9,165 5,704 <br />Metals 326 673 <br />Glass 617 1,981 <br />Plastic 699 1,140 <br />Contaminants 827 366 <br />Total 11,633 9,864 <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 />s The weights from Tuesday's routes were excluded from the comparison because <br />they represent weekly collection, whereas the Wednesday, Thursday and Friday <br />routes provided more comparable data as they were collected bi-weekly. <br />The average estimated quantities from the October single stream (Monday) routes are <br />compared to the averages of the October dual stream bi-weekly routes (Wednesday <br />through Friday) in Table 10. <br />Bi6os B-9 <br />