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2005-07-26_PWETC_AgendaPacket
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2005-07-26_PWETC_AgendaPacket
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3/22/2010 3:57:34 PM
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9/8/2006 9:57:21 AM
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Commission/Committee
Commission/Authority Name
Public Works Commission
Commission/Committee - Document Type
Agenda/Packet
Commission/Committee - Meeting Date
7/26/2005
Commission/Committee - Meeting Type
Regular
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<br />March 23, 2005 <br />Page 7 <br /> <br />route. The September and October Monday single stream pilot route results were quite similar, <br />with no significant difference between confidence intervals. <br /> <br />Because the comparison of the "before' pilot Monday routes to the "during' pilot Monday routes <br />reflected statistically significant differences for each of the categories, we calculated estimated <br />quantities of materials. Table 6 shows the matelial compositions by weight, derived from <br />applying the median percentages for each material category obtained from the recyclable <br />material sorting events to the average of the pilot route truck weights for each of the Monday <br />routes. <br /> <br />Table 6 <br />Comparison of Material Compositions by Weight1 <br />Monday Routes <br /> <br /> Weight (Pounds) <br /> July September October <br />Material Category (Dual Stream) (Single Stream) (Single Stream) <br />Paper 3,879 9,165 9,327 <br />Metals 529 326 291 <br />Glass 1,320 617 690 <br />Plastic 717 699 594 <br />Contaminants 261 827 1,199 <br />Total' 6,707 11,633 12,101 <br /> <br />1 The weights were estimated by applying the median percentages from the sorting events to the average of the pilot route truck tonnages. <br />2 The totals are based on the average of two pilot routes for each month. <br /> <br />The results of comparing the material compositions by weight for the Monday collection routes <br />include: <br /> <br />. The quantities of paper collected via the single stream method (September and October) <br />increased compared to the quantities collected via the dual stream method (July). <br /> <br />. The quantities of metals, glass, and plastic decreased with the single stream collection <br />method. <br /> <br />. The amount of contaminants collected via the single stream method was higher than the <br />dual stream method. <br /> <br />No conclusions are drawn as to the magnitude of the differences by weight because the weights <br />represent only the median percentages. <br /> <br />OJ -00253-1 0 1 0 1-01 01 I 070001 I 13500 P:\13500 Ramsey Co. 2003\RT A \Roseville\F A \B 1544 - Final Data Analysis <br />
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