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All Metro 2016 Waste Composition Study: Excel results files updated June 20, 2018
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This is one of a series of files giving detailed results of the waste composition study
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Results are given in a series of sheets or tabs. This file contains the following tabs:
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F16METAll Metro All Substreams
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F16MET-ALLAll Metro All Substreams and single material additions/subtractions - see row 38
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F16METRESAll Metro Residential Route Trucks
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F16METCOMAll Metro Commercial Route Trucks
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F16METMIXAll Metro Mixed Route Trucks
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F16METROCAll Metro Compacting Drop Boxes
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F16METRODAll Metro Loose Drop Boxes
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F16METSHRAll Metro Self Haul
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F16METMRFAll Metro Mixed Waste Processing Residue
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F16METCAll Metro Cold Seasons (October - March)
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F16METWAll Metro Warm Seasons (April - September)
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Each of these separate tabs contains the following columns:
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A: MaterialMaterial name (or group of materials)
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B: Field ResultsComposition percent for this material as measured in the field
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D: Contam. CorrectedComposition based on 'clean/dry' correction for each material
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F: CleanTons
Total tons disposed (Contam. Corrected percent multiplied by total substream tons)
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H: # Present/# SamplesNumber of samples where the material was present/Total samples
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I: % PresentPercent of samples where the material was present
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Subsequent columns give the confidence interval information from columns C, E, and G, formatted
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as numbers rather than text.
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For comparisons to waste composition studies outside of Oregon, use the field results, as few other studies
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measure contamination levels of their sorted wastes.
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Explanation of material name formatting:
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Material group names in bold are sums of some of the individual materials below
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Material group names in italics are recombination of some of the individual materials above.
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Materials that are neither bold nor italics are the individual materials sorted and measured in the field.
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F16MET-ALL includes some additional solid wastes that were not sampled in the study but are reported separately, such as pure loads of tires, gypsum wallboard, and medical waste
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F16MET-ALL also includes subtractions for material separated from mixed waste at Metro-area transfer stations after we pulled our samples, and for scrap metal
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recovered from burner ash at the Covanta Energy Recovery Facility in Marion County
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Columns include:
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B: Clean Tons: same as column F in F16MET
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C: Material not sampled, including tires, gypsum, and medical waste, or subtractions for estimates of materials separated from mixed waste or burner ash at Metro transfer stations or the energy recovery facility
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D: Sum of columns B, C
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F: Contam. Corrected tons: Clean/Dry tons same as column D of F16MET
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G: Composition of "Clean/Dry" tons adjusted for single material
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I: Field Percent: Composition as measured in the field same as column B of F16MET
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J: Field Percent adjusted for single material.
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