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Waste Characterization Studies and Initial MassDEP Analysis

This document outlines the key aspects and findings from the MassDEP Waste Characterization Study (WCS) presented during the SWAC Meeting on June 23, 2011. It details the participation of six MWC units in the Class II recycling program, the regulatory framework requiring WCS submissions every three years, and the employed test methodology (ASTM D5321-92). The study categorizes various waste materials, including paper, plastics, metals, and organic materials, and describes the sorting and sampling procedures used to assess waste composition, both for residential and ICI sectors. ###

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Waste Characterization Studies and Initial MassDEP Analysis

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  1. Waste Characterization Studies and Initial MassDEP Analysis SWAC Meeting June 23, 2011 Jordan Macy, MassDEP

  2. Waste Characterization Study (WCS): Background • 6 MWC units participating in class II recycling program • Regulations at 310 CMR 19.303 • Facilities must submit WCS every 3 years • Test Methodology ASTM D5321-92: Test Method for Determination of the Composition of Unprocessed Municipal Solid Waste • MassDEP Guidance includes materials • 9 Aggregate Primary Material Categories • 62 Secondary Material Subcategories

  3. Primary Material Categories (count of secondary material types) • Paper (8) • Plastics (13) • Metals (7) • Glass (4) • Organic Materials (5) • Construction and Demolition (8) • Household Hazardous Waste (9) • Electronics (3) • Other Materials (5)

  4. Secondary Material Subcategories • Definitions of each material type are found in appendices of each MWC Facility WCS report • Also on DEP website at: http://www.mass.gov/dep/recycle/priorities/wrr.htm

  5. Sorting Procedure • Driver Interviews • Use questionnaires to determine if waste is residential or ICI • Must be > 80% for Residential /ICI designation • Other loads excluded • Record Load Sample Information • Origin type of waste (ie. Residential or ICI) • Truck Type (rear packer, compactor, etc.) • Tonnage delivered • Staging/selecting the waste sample (must be >225 pounds) • Dumped onto sort screen • Sorted into material category (62) bins • Weigh bins

  6. Staging Samples for Sorting

  7. Sort Table & Bins

  8. Analyses Presented in MWC Reports • Account of Final Sort Design • Overall Composition of Waste Stream • Composition of Waste by Substream • Residential • ICI • Unacceptable loads (< 80% residential/ICI, originating out of state, or > 50% C&D) • Composition of Waste by Haul Type • Roll Off vehicle type (open top, closed top, compactor) • Rear/Front loading packer

  9. MassDEP Weighted Average Calculations for Summary Estimates In-state waste received by each facility in 2009 (tons) Adding up the products of (% of combined total) multiplied by (facility % abundance of secondary waste category) across all the 6 facilities equals an estimate of the percent abundance of each material in MA waste (based on 2009 in-state tons received).

  10. Comparative % of WCS by MWC

  11. Aggregate Categories *Note: Data at Saugus, North Andover, and Millbury are subject to revision

  12. Aggregate Weighted Average of Primary Material Categories* *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  13. Weighted Average: Top 13 Subcategory Materials (= 64% of Total Materials)* *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  14. *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  15. Residential Sector Primary Waste Category Abundance by MWC Facility *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  16. ICI Sector Primary Waste Category Abundance by MWC Facility

  17. *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  18. Weighted Abundance of Top 13 Residential Materials (= 64.1% of Total Residential)* *Note: Data is subject to revision and may be corrected pending updated reports at Wheelabrator Facilities

  19. Weighted Abundance of Top 13 ICI Materials (= 71.1% of total ICI)

  20. Number of Loads Sampled over2 Seasons at MWC

  21. Questions? • Contact Jordan Macy • (617) 292-5805 • Jordan.Macy@state.ma.us

  22. Appendix: Material Subcategories

  23. Paper (8 types) • Uncoated Corrugated Cardboard/Kraft Paper • Waxed Cardboard • High Grade Office Paper • Magazines/Catalogs • Newsprint • Other Recyclable Paper • Compostable Paper • Remainder/Composite Paper

  24. Plastics (13 Types) • PET Beverage Containers (non-MA deposit containers) • PET Containers other than Beverage Containers (which originally contained non-hazardous material) • Plastic MA Deposit Beverage Containers • HDPE Bottles, colored and natural, (which originally contained non-hazardous material) • Plastic Tubs and lids (HDPE, PP, etc) • Plastic Containers #3-#7 (which originally contained non-hazardous material) • Expanded Polystyrene Food Grade • Expanded Polystyrene Non-food Grade • Bulk Rigid Plastic Items • Film (non-bag clean commercial and industrial packaging film) • Grocery and other Merchandise Bags • Other Film means plastic film • Remainder/Composite Plastic

  25. Metals (7 types) • Aluminum Beverage Containers (non-MA deposit containers) • Aluminum MA Deposit Beverage Containers • Tin/Steel Containers • Other Aluminum • Other Ferrous and non-ferrous • White Goods • Remainder/Composite Metal

  26. Glass (4 types) • Glass Beverage Containers (non-MA deposit containers) • Other Glass Packaging Containers (non-MA deposit containers) • Glass MA Deposit Beverage Containers • Remainder/Composite Glass

  27. Organic Materials (5 types) • Food Waste • Branches and Stumps • Prunings, Trimings, Leaves and Grass • Manures • Remainder/Composite Organic

  28. C&D in MSW Stream (8 types) • Asphalt Pavement, Brick, and Concrete • Aggregates, Stone, Rock • Wood – Treated • Wood – Untreated • Asphalt Roofing • Drywall/Gypsum Board • Carpet and Carpet Padding • Remainder/Composite Construction and Demolition

  29. HHW (9 types) • Ballasts, CFLs, and Other Fluorescents • Batteries – Lead Acid • Batteries – Other • Paint • Bio-Hazardous • Vehicle and Equipment Fluids • Empty Metal, Glass, and Plastic Containers (that originally contained toxic materials) • Pesticides and Fertilizers • Other Hazardous or Household Hazardous Waste

  30. Electronics (3 types) • Computer-related Electronics • Other “brown goods” • Televisions and Computer Monitors

  31. Other Materials (5 types) • Tires and other rubber • Textiles • Bulky Materials • Restaurant Fats, Oils and Grease • Other Miscellaneous

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