1. Sustainability and Market Development Committee Meeting December 9, 2004 Agenda Item S Oral Presentation Regarding The Results of the Study To Update Statewide Waste Characterization Of Disposed Waste, Including Rigid Plastic Packaging Containers And Used Oil Containers (FY 2002- 03 Contract Concept 18)

2. Brief Background Second CIWMB Statewide Study – first was done in 1999 Second CIWMB Statewide Study – first was done in 1999 Types and quantities of materials disposed Types and quantities of materials disposed Statewide overall composition Statewide overall composition Individual sectors: residential, commercial, self-hauled waste compositions Individual sectors: residential, commercial, self-hauled waste compositions Amounts disposed from each sector Amounts disposed from each sector Specific data for Rigid Plastic Packaging Containers (RPPCs) Specific data for Rigid Plastic Packaging Containers (RPPCs)

3. Contribution of Each Sector to Statewide Overall Disposed Waste Stream, 2003

6. Results – Composition of California’s Overall Disposed Waste Stream by Major Category, 2003

7. Comparing Data from 1999 Statewide Study with 2003 Statewide Study CAUTION!!!

8. POINTS TO KEEP IN MIND: Different objectives and emphasis Different objectives and emphasis Different methods used Different methods used Inherent variability of random sampling Inherent variability of random sampling Variation among facilities used Variation among facilities used Natural variation in the waste stream Natural variation in the waste stream Changes over time Changes over time

9. Contribution of Each Sector to Statewide Overall Disposed Waste Stream 1999 2003

10. Variables for Waste Composition 1999 study focused on generators and sampling from dumpsters 1999 study focused on generators and sampling from dumpsters 2003 study captured more drop-boxes (which tend to contain C&D material) 2003 study captured more drop-boxes (which tend to contain C&D material) Each sector’s overall contribution affects the overall composition Each sector’s overall contribution affects the overall composition Changes in the “sector split” mean changes in the overall composition Changes in the “sector split” mean changes in the overall composition

11. Comparison of Major Categories, 1999 and 2003

12. Ten Most Prevalent Material Types in California’s Overall Disposed Waste System 1999 2003 Material Type % Food14.6 Lumber9.6 Remainder/Composite Organics 6.4 Uncoated Cardboard 5.7 Remainder/Composite Paper 5.7 Film Plastic 4.3 Leaves/Grass4.2 Remainder/Composite Metal 3.7 Remainder/Composite C&D 3.6 Other Miscellaneous Paper 3.5 Material Type %Food15.7 Remainder/Composite Paper 9.6 Leaves/Grass7.9 Remainder/Composite Organics 6.9 Lumber4.9 Uncoated Cardboard 4.6 Other Miscellaneous Paper 4.4 Newspaper4.3 Film Plastic 3.9 Other Ferrous Metal 2.4

13. Upcoming Targeted Studies Detailed study on construction and demolition as its own waste stream Detailed study on construction and demolition as its own waste stream Detailed study on non-C&D self-hauled and drop-box waste stream Detailed study on non-C&D self-hauled and drop-box waste stream Ten major commercial generator groups – disposal and diversion characterization Ten major commercial generator groups – disposal and diversion characterization Materials Recovery Facility (MRF) residuals Materials Recovery Facility (MRF) residuals

14. Questions?