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Appendix B <br />Eureka Recycling <br />Composition Analysis Methodology <br />Eureka Recycling collects materials in two streams: a "papers" stream <br />consisting of various grades of paper (including cardboard), and a "containers" <br />stream consisting of food and beverage containers (including glass, plastic <br />bottles, and metal cans). As outlined in our contract, Eureka Recycling <br />conducts an annual composition study of the two streams to create a basis on <br />which the percent of each commodity collected in the two- stream <br />commingled program can be estimated based upon total weight collected in <br />the truck. <br />Composition by Stream <br />During the composition study, Eureka Recycling weighs each track before <br />and after tipping the papers to determine the weight of the papers and <br />containers streams. Each truck has a stored tare weight that is updated regularly <br />for accuracy. This weighing process allows us to determine what percentage of <br />the total recycling collected makes up the papers stream, and what percentage <br />makes up the containers stream. <br />Composition by Commodity of Each Recycling Stream <br />The composition study starts with <br />Eureka Recycling storing all of the <br />materials collected in the city in the <br />containers stream during a one - <br />week period in a separate bunker <br />from all other materials at the <br />facility. Eureka Recycling sorts <br />these containers by material <br />separately from all other containers <br />at the facility using the sort line. <br />The sorted materials are then baled or put into a hopper and transported with a <br />forklift to the truck scale to be weighed. Finally, Eureka Recycling weighs the <br />total amount of each sorted material grade (including residual) to establish a <br />percentage of composition each grade represents within the containers stream. <br />The entire process is then repeated with the papers stream to establish a <br />composition percentage of each grade of paper within the stream. <br />(651) 222-BORT (7678) <br />wirs.eundaireryglln8.or8 <br />Our mission is to reduce <br />waste today through <br />innovative resource <br />management and to reach <br />a waste -free tomorrow <br />by demonstrating that waste <br />Is preventable, not Inevitable. <br />An afllrmatlw amlan, equal <br />opportunity employer. <br />Prinme on 10% posts .... me r <br />mrydee paper that wn procevM <br />without Me use of chlorine. <br />