2013-02-26_PWETC_AgendaPacket - Laserfiche WebLink

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Recycling Pilot Program Summary • "During" versus "Before." The single- stream routes yielded increased percentages of paper compared to the same areas collected as dual- stream routes in the "Before" period. • "During" versus `Before." The single- stream routes generated decreased percentages of metals, glass and plastics compared to the same areas collected as dual - stream routes in the "Before" period. Dual- Stream • "During" versus `Before." The composition of materials collected in the combined "During" dual- stream pilot areas was not significantly different from the composition compared to the same areas in the "Before" period. • "During" versus "During." The composition of materials collected in each of the "During" dual- stream pilot areas (Weekly, Two Bins, Education) were not statistically different from each other. Non - Targeted Materials • The percentages of non - targeted materials (at the curb) in the single- stream routes were higher than the percentages of non - targeted materials found on the same routes collected as dual- stream routes in the "Before" period. • "During" versus "During." The percentages of non - targeted materials in the single- stream routes were higher than the percentages of non - targeted materials found in the combined "During" dual- stream pilot routes. The overall results from the analysis reflect that the composition of materials collected for recycling changed significantly with single - stream but did not change significantly with any of the dual- stream variations (increased frequency, increased capacity, increased education). Tonnages of Material Collected and Processed for Recovery The overall goal of this pilot program was to help the City refine its curbside recycling program to capture more recyclable material. Thus, this section includes an analysis of how much additional material was recovered in each of the tested pilot approaches. As discussed in the Pilot Design and Methodology section, a key issue is how to address material that is collected at the curb but is not ultimately recovered and recycled. Such contamination or residuals falls into three categories: • Non - targeted materials, collected at the curb; • Processing residuals from the MRF; and • Contaminants in marketed product (e.g., in bales sold to end - markets). Comparison of Tonnages Collected During Pilot Collection Routes The first step in comparing the tonnages was to develop average gross weights (all tonnages, including non - targeted materials) collected per route for each week of the B1605 DRAFT 9