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Apni128, 2005 <br />Page 2 <br />■ Attachment C— Excerpts from the City of Shoreview Recycling Contract: <br />Processing Residuals Requirements <br />Background <br />Many communaties are considering changing their recycling programs to single stream <br />systems. The City of Roseville conducted a pilot collection study in 2004 to test the <br />residents' response to a variety of collection design changes, including two pilot routes testing <br />single stream recyclin�g. One of the key components in quantifying the averall iunpacts of <br />collection design choices is the need to estimate the change in "processing residuals from the <br />MRF" as one indicator of environmental impacts. <br />Changing a collection design impacts rnany systexza variables: <br />■ Overall participa�ion may increase or decrease due to increased convenience (e.g., <br />less sorting, wheeied carts}; <br />■ Tx�dividual household recovery rates may increase {more recyclable materials set out <br />and less trash) affecting the zelative composition of the recycling streatn; <br />■ More "non-targeted materzals" may be set out by zesidents for recycling; <br />■ The collection crews naay not inspect Ehe recycling bins at truck-side for non- <br />targeted materials (if lidded carts are loaded with semi-automatic or automatic lifting <br />devices on board the curbside recycling vehicles); <br />� Once delivered to a MRF, the relative percent and absolute tons of "processing <br />residuals" ouiput for dasposal may inerease; <br />s Once sorted and processed at the MRF, the individual recyclable commodities (e_g_, <br />balcs of newspaper, aluminum cans, etc.} may have more or less "contamia�ants" <br />depending on MRF design, management and operations; andlor <br />■ There rxzay be �nore or Iess glass bzeakage throughout the collection and processing <br />stages suc� that the relaiive ouiput of color-sorted glass vs. caloz'-mixed, broken <br />glass changes. <br />Beyond "processing residuals", other potential environmental and health impacts of collection <br />system changes include: <br />■ OveraIl or "net" recovery of recyclable material (i.e., more or less tons actually <br />recycled); <br />■ Efficiency of collections (e.g., change in curbside truck payloads, routing, etc.); <br />■ Worker health and safety (e.g., manual vs. automatic lifting; ccntralized processiz�g <br />requiring manual sorting, etc.); and <br />I■ Composition of recycl.ables, comrnoditics products, and processing residuals. <br />01-00253-10101-0101 � 0700D1 � 135fl0 P:113500 Ramsey Co. 2003\R7'A\Rnsevillc�FA�DraftResiduaisMemo042805.doc DRAFT <br />