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3 27 <br /> B. Commercial system. <br /> Services provided in this sector now includes 44 commercial glass sites, ten food waste <br /> collection sites, UNC campus collections and by Boy Scout Troop 39 at Blue Cross Blue Shield <br /> Our proposed expansion includes four elements. <br /> 1. Standard commingled commercial recycling. <br /> The commercial recycling system cost assumes that all 1,100 commercial locations that now <br /> have dumpsters for solid waste will get dumpsters for recyclable materials. All types of paper <br /> and all metal and plastic containers (no glass since it would contaminate the paper) are assumed <br /> to be diverted to that recycling dumpster. Corrugated cardboard that has "left the system" due to <br /> the ban is shown in the diversion estimate since we assume that new recyclables will be <br /> commingled with the cardboard now diverted and brought to the MRF. <br /> 2. Source-separated glass expansion . This is an active commercial program <br /> we now operate. <br /> Based on the number of bars and restaurants that do not now receive commercial glass service <br /> but could generate sufficient amounts, we assumed that thirty new sites could be added and that <br /> generation rates were equal to those at current sites. <br /> 3. Source-separated food wastes. This is an active commercial program that <br /> we are now developing. <br /> Based on the number of full service restaurants, grocery stores and institutional food waste <br /> generators not now receiving service but identified in our food waste study last year, we <br /> estimated that thirty new sites could be added at generation rates equal to the existing sites. <br /> C. Single-family incorporated area curbside weekly service. This is a mature <br /> program operating since November 1989. We would add a second bin and all <br /> types of paper would be collected in it with all types of cans and bottles in the <br /> first bin. <br /> Additional recycling in this sector include an assumed 40% rate for mixed paper and white <br /> paper and a 25% percent recovery rate for#5 and#7 bottles and gable top boxes. These <br /> materials are not now collected at the curb. After diversion for these items is subtracted from <br /> residential waste, an overall 8% increased diversion rate is applied to solid waste remaining in <br /> this sector based on the assumption that either a volume-based fee or a collection ban will be <br /> implemented by each jurisdiction. Studies have shown an 8-13% reduction rate in residential <br /> waste when volume-based rates or collection bans (mandatory recycling) are applied where <br /> recycling already exists. <br /> D. Single-family unincorporated areas curbside service. This is a mature program <br /> operating since April 1992. This collection system will also have two bins, one for <br /> papers, one for containers. <br /> Additions in this sector include universal service to all residential households in the <br /> unincorporated areas with a 10% exception for households we estimate cannot be reached with <br /> recycling equipment used in this program. If a decision were made to serve those hard to serve <br /> households, costs could increase by more than the average cost per house. The diversion from <br /> the unreached households is assumed to take place at the convenience centers. With universal <br />