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March 23, 2005 <br />Page 1 S <br />Compar�son of the Currer�t Dual Stream Bi-Weelc[y Method to the Dual Stream Bi� <br />Weekly Method with Larger Bins <br />`lfie upper and lawer confidence intervals of the bi-weekly, dnal stream with larger bins were not <br />significantly different than the bi-weekly dual stream (conirol) routes. Thus, the materials <br />composition is projected to remain similar. <br />Tt appears that additional data sets are needed to draw any definitive conclusions as it relates to <br />quantities sei out for collection using the two approaches. <br />Comparison of the Dual Stream Collection Method Before and D�ring f�e Piiot <br />Program <br />The upper and lower con�dence intervals of the dual siream routes during the pilot prograxz� <br />were not significantly different than the dual streaxn routes hefore the pilot was initiated. Thus, <br />the July cornposition results are representative af dual stream collection for the City of <br />Roseville. <br />Please contact me or Mary Chamberlain at {651} 994-8415 if you have any questions regarding <br />tlus repart. We thank you for the appartunity to provide these services. <br />Sincere9y, <br />R. W. BECK, INC. <br />Robert Craggs <br />cc: Norm Schiferl, St. Paul-Ramsey Counfy Deparhnent of Public Health <br />Mary Chamberlain, R. W. Beck, Inc. <br />Dan Krivit, Dan Krivit and Associates <br />O1-OD253-10I01-D101 � 070001 � 13500 P:11350U Ramsey Co. 20031RTA1Rosevi11e1F'A1B1544 - Fifla] Data Analysis <br />