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<br />March 23, 2005 <br />Page 17 <br /> <br />. The amount of contaminants collected via the single stream method was higher than the <br />dual stream method. <br /> <br />Comparison of Single Stream and Dual Stream Collection Methods <br /> <br />The upper and lower confidence intervals of the September and October Monday single stream <br />pilot routes were significantly different than the September and October dual stream routes. <br /> <br />The results of comparing the single stream and dual stream collection methods in September and <br />October include: <br /> <br />. The single stream routes yielded increased quantities of paper compared to the dual stream <br />routes; <br /> <br />. The single stream routes generated less quantities of metals, glass and plastics than the dual <br />stream routes; and <br /> <br />. The quantities of contaminants in the single stream routes were higher than the quantities of <br />contaminants found in the dual stream routes. <br /> <br />On average, the quantities collected during the pilot from single stream collection routes were <br />greater than from dual stream routes. However, more data sets are needed to draw definitive <br />conclusions. <br /> <br />Comparison of the Current Dual Stream Bi-Weekly Method to the Dual Stream Weekly <br />Method <br /> <br />The upper and lower confidence intervals of the weekly dual stream collection routes were not <br />significantly different than the bi-weekly dual stream (control) routes. Thus, the materials <br />composition is projected to remain similar. <br /> <br />It appears on a monthly basis that greater quantities of materials are likely to be collected with <br />weekly collection as compared to bi-weekly collection. However, more data sets are needed to <br />draw definitive conclusions. <br /> <br />Comparison of the Current Dual Stream Bi-Weekly Method to the Dual Stream Bi- <br />Weekly Method with Additional Education <br /> <br />The upper and lower confidence intervals of the bi-weekly, dual stream with additional <br />education collection routes were not significantly different than the bi-weekly dual stream <br />(control) routes. Thus, the materials composition is projected to remain similar. <br /> <br />It appears that additional data sets are needed to draw any definitive conclusions as it relates to <br />quantities set out for collection using the two approaches. <br /> <br />01-00253-10101-01011070001 I 13500 P:\1350Q Ramsey Co. 2003\RTA\Roseville\FA\B1544 - Final Data Analysis <br />