2005 Recycling Pilot Program Report

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March 23, 2Q05 Page 11 The results of comparing the single stream and duaI stream collection methods in September and October include: ■ n ■ The single stream routes yielded increased quantities of paper compared to the dual stream routes. Tlae single stream routes generated less qnantities of inetals, glass and plastics than the dual stream routes. The quantities of contaminants in the single stream routes were higher than the quantities of cantaxxzinants found in the dual stream routes. No conclusions are drawn as to tl�e tx�a�tude of the differences by weight because the weighis represent on�ly Ehe median percentages. Table 11 below shows a comparison of the four single stream routes to the six duaI stream routes during the pilot {September and October). Tabfe 'i1 Comparison of Bi-Weekly Single Stream and Dual Stream Routes Tatal Quaniities Coilected by Route During Pilot �5eptember and October) Route Sept. Mon Sept. Man Conirast Oct Mon Oct Mon Contrast Mean Standard Deviation Fotal Quantities Collected by Route 4 Single Stream Routes . (Monday) 10,3$5 � Z,sz� 9,925 14,300 11,879 2,087 Route Sept Wed Sept Thurs Sept Fri Oct Wed Oct Thurs Oct Fri 6 Dual 5tream Routes (Wed - Friday}i 9,625 9,150 10,825 7,975 10,600 8,075 9,375 1,214 � The weights from Tuesday's roules were exciuded from the comparison because they represe�t weekly colleclion, whereas the Wednesday, Thursday and Friday routes pravided more comparable data as ihey were collecied bi- weekly. As reflected above, on average tlae quantities of matcrials coliected during the pilot from the single streaxn pilot routes were greater than froxit� the duai stxeaxn pilot routes. However, the standard deviation reflects some overlap in the poiential quantities likely ta be collected nsing the two xnethods. 01-Of1253-10101-01�1 � 070001 ! 13500 P:\13500 Rainsey Co. 20031RTAUtoseville�FA�BL544 - Fina] DataAnalysis