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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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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 12 <br /> <br />Comparison of the Current Dual Stream Bi-Weekly Method to the Dual <br />Stream Weekly Method <br /> <br />Residents in the Tuesday pilot area were able to set out their 18-gallon bin weekly rather than <br />every other week. The comparative results are shown below in Table 12. <br /> <br />Table 12 <br />Comparison of Dual Stream Routes During Pilot <br />Weekly vs. Bi-weekly Collection <br /> <br /> Tuesday (Weekly) Route' Friday (Bi-weekly) Route' <br /> (Control) Statistically <br /> 90% Confidence 90% Confidence Significant <br /> Interval Interval Difference <br />Material <br />Category Mean Lower Upper Mean Lower Upper <br />Paper 65.4% 62,5% 68.3% 59,5% 53.9% 65.1% <br />Metals 7.4% 5,8% 9.0% 6.7% 6,0% 7,5% <br />Glass 13.6% 8.3% 19,0% 22.2% 14.5% 29,8% <br />Plastic 9,9% 7.7% 12.0% 8,6% 6.3% 10.9% <br />Contaminants 3.7% 2,6% 4.9% 3,0% 2,5% 3.5% <br />Total' 100% nla nla 100% nla nla <br /> <br />1 Three samples were sorted from the Tuesday routes. <br />2 Three samples were sorted from the Friday roules. <br />3The totals may not equal the sum of the material categories due to rounding. <br /> <br />As shown in Table 12, the upper and lower confidence intervals for each of the material <br />categories of the weekly dual stream collection routes were not significantly different than the <br />bi-weekly dual stream (control) routes. Thus, the composition of the materials collected did not <br />significantly change. <br /> <br />As for the quantities of materials collected, Table 13 below reflects the weights of the quantities <br />collected for each route. <br /> <br />Table 13 <br />Comparison of Dual Stream Bi-Weekly vs. Weekly Collection (Tuesday) <br />Total Quantities Collected by Route Before and During Pilot <br /> <br />July <br />(bi-weekly) <br /> <br />September <br />(weekly) <br /> <br />October <br />(weekly) <br /> <br />Total Quantities Collected <br />(Tons) <br /> <br />8,150 <br /> <br />5,650 <br /> <br />4,925 <br /> <br />01-00253-10 I 0 1-01 0 I I 070001 I 13500 P:\13500 Ramsey Co. 2003\RT A \Roseville\F A \B 1544 - Final Data Analysis <br />
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