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2005-07-26_PWETC_AgendaPacket
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2005-07-26_PWETC_AgendaPacket
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Public Works Commission
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Agenda/Packet
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7/26/2005
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Regular
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<br />April 28, 2005 <br />Page 3 <br /> <br />Because iudependent, actual field measurements were not conducted as a part of the Roseville <br />pilot project, this memo will not empirically quantify the "process residuals" but rather <br />discuss the available data as reported in other studies. Also, the policy implications will be <br />outlined and recommendations for further research itemized. <br /> <br />Standard Definitions - Currently the recycling industry lacks standardized defmitions. This <br />is one of the key barriers to professional dialogue about designing studies to measure impacts <br />of changes to single stream recycling programs. The following set of terms is proposed to the <br />City and Ramsey County as a basis for such discussion (see Attachment A for a more <br />thorough set of proposed definitions and examples.) <br /> <br />"N on- Tarl!eted Materials" - Materials that are defined by the municipality as not <br />acceptable but are routinely included by residents in their curbside bins. <br /> <br />"Processinl! Residuals" - Materials that are disposed as mixed solid waste as an <br />unwanted by-product after processing of recyclables at MRFs. <br /> <br />"Contaminants in marketed product" - Outthrows and prohibitives as defined for <br />specific commodities and grades by each end market (i.e., mills or other <br />manufacturing plants that utilize processed recyclable materials). <br /> <br />If these terms are clearly defined and reported, the recycling industry will be able to better <br />compare research results. The actual composition, sources, and systematic causes of <br />increased processing residuals will be better understood. Also, through improved <br />communications and professional research, public and private management controls will <br />become more feasible and accepted as "best practices". Thus, standardized definitions should <br />be a first step if reducing the amount of processing residuals is a top priority for both <br />municipalities and private contractors regardless if the collection system is dual stream or <br />single stream. <br /> <br />Available Data from the City of Roseville Pilot Project <br /> <br />A comprehensive recyclable materials composition analysis was conducted as part of the <br />overall City pilot project. One of the key indicators of effectiveness measured for each <br />collection method was the amount of non-targeted material (or "contaminants") collected. <br />The non-targeted material was divided into four subcategories: <br /> <br />. Beer, Pop & Water Boxes <br /> <br />. Other Paper Trash <br /> <br />. Plastic Bags and Other Film Plastic <br /> <br />. Other Trash <br /> <br />01-00253-10 101-0 101 I 07000 I I 13500 P:\13500 Ramsey Co. 2003\R T A \Roseville\F A\DraftResidualsMemo042805.doc <br /> <br />DRAFT <br />
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