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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 13 <br /> <br />It appears that on a montWy basis, the weekly collection would result in greater quantities <br />collected than bi-weekly collection. However, because the data set is limited, we cannot draw a <br />definitive conclusion without additional pilot data. <br /> <br />Comparison of the Current Dual Stream Bi-Weekly Method to the Dual <br />Stream Bi-Weekly Method with Additional Education <br /> <br />The residents in the Wednesday pilot area received additional recycling educational materials <br />while their collection method (dual stream) and frequency (bi-weekly) remained unchanged. <br />The results are reflected below in Table 14. <br /> <br />Table 14 <br />Comparison of Dual Stream Routes During Pilot <br />Bi-Weekly with Additional Education vs. Bi-Weekly Control <br /> <br /> Wednesday (Addt'l Educ) Route' Friday (Control) Route' <br /> 90% Confidence 90% Confidence Statistically <br /> Interval Interval Significant <br />Material Difference <br />Category Mean Lower Upper Mean Lower Upper <br />Paper 56.4% 53.4% 59.5% 59,5% 53.9% 65,1% <br />Metals 8.9% 7,8% 10,0% 6.7% 6,0% 7,5% <br />Glass 18.3% 14.7% 21.8% 22.2% 14.5% 29.8% <br />Plastic 12,3% 9.5% 15.1% 8,6% 6,3% 10.9% <br />Contaminants 4.1% 3.8% 4.4% 3.0% 2,5% 3,5% <br />Total' 100% nla nla 100% nla nla <br /> <br />1 Three samples were sorted from the Wednesday routes. <br />2Three samples were sorted from the Friday routes. <br />3 The totals may not equal the sum of the material categories due to rounding. <br /> <br />As shown in Table 14, the upper and lower confidence intervals of the bi-weekly, dual stream <br />with additional education collection routes were not significantly different than the bi-weekly <br />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 15 below reflects the weights of the quantities <br />collected for each route. <br /> <br />01-00253-10 10 1-0 1 0 I I 07000 I I 13500 P:\13500 Ramsey Co. 2003\RT A \Roseville\F A \B 1544 . Final Data Analysis <br />
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