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March 23, 2005 Page 15 As for the quantities of materials collected, Table 17 below reflects the weights of the quantities collected for each route. Table 17 Comparison of Dual Stream Bi-Weekly with Larger Bins (Thurs) vs. Bi- Weekly Control (Friday) Total Quantities Collected by Route During Pilot September October Mean Standard Deviation Thursday (Larger Bins) 9,150 10,600 9,875 1,025 Friday (Control) 10,825 8,075 9,450 1,945 Comparison of the Dual Stream Collection Method Before and During the Pilot Program Table 18 below compares the results of the dual stream collection routes before the pilot was initiated (July) to the results from the control route (Friday) during the pilot program (September and October). Table 18 Comparison of Bi-Weekly Dual Stream Routes1 B f D' P'I t e ore vs. urma I I 0 Total Quantities (Tons) Collected by July September & Route (Before) October (During)' Wednesday 6,000 8,800 Thursday 6,800 9,875 Friday 6,500 9,450 Mean 6,433 9,375 Standard Deviation 404 541 1 The weights from Tuesday's routes were excluded from the comparison because they represent weekly collection, whereas the Wednesday, Thursday and Friday routes provided more comparable data as they were collected bi-weekly. 2 Average of two routes (Sept. and Oct.) for each day. The above results appear to reflect that more recyclable materials, by weight, were collected during the pilot compared to the same collection day before the pilot. Also, even though residents in the control route presumably were not aware of the pilot study, they did set out more recyclable materials during the pilot. 01-00253-10 10 1-0lDl I 070001 I 13500 P:\13500 Ramsey Co. 2003\RT A \Roseville\F A \B 1544 - Final Data Analysis