CONSULTATIVE GROUP OF EXPERTS ON NATIONAL COMMUNICATIONS FROM PARTIES NOT INCLUDED IN ANNEX I TO THE CONVENTION (CGE) HANDBOOK ON THE WASTE SECTOR Consultative Group of Experts (CGE) – National GHG Inventory Handbook Waste Sector CONTENTS 1 Background..............................................................................................................................5 2 Purpose of the handbook.........................................................................................................5 3 Organisation of the Handbook and Background Resources....................................................6 4 Global Carbon and Nitrogen Cycle and the Waste Sector......................................................7 5 Revised 1996 IPCC Guidelines...............................................................................................8 5.1 The approach adopted by the Revised 1996 IPCC Guidelines........................................8 5.2 Steps in the preparation of an inventory using the Revised 1996 IPCC Guidelines....................................................................................................................................9 6 IPCC Good Practice Guidance .............................................................................................10 6.1 6.2 Broad approach and steps..............................................................................................10 Waste categories and GHGs..........................................................................................10 6.2.1 Revised 1996 IPCC Guidelines and IPCC good practice guidance categories...................................................................................................................................11 6.3 Methodological choice – identification of key categories.............................................11 6.5 Tier structure: selection and criteria..............................................................................12 7 Comparison Between the Revised 1996 IPCC Guidelines and the IPCC Good Practice Guidance..........................................................................................................................13 7.1 Approach and methods adopted ...................................................................................13 7.2 Key activity data required..............................................................................................13 7.3 Key emission factors required.......................................................................................14 7.4 Additional efforts and the rationale needed for adopting the IPCC good practice guidance.......................................................................................................................14 8 Reporting of GHG Inventory in the Waste Sector.................................................................15 8.1 Mapping or linkage between the Revised 1996 IPCC Guidelines and IPCC good practice guidance..............................................................................................................15 9 Methodological Issues and Problems in developing a GHG inventory for Waste using the Revised 1996 IPCC Guidelines......................................................................................15 9.1 9.2 10 CH4 Emissions from Solid Waste Disposal Sites.......................................................................17 10.1 10.2 10.3 10.4 11 Problems relating to methodological issues..................................................................15 Problems relating to activity data and emission factors................................................16 Issues in estimating CH4 emissions from Solid Waste Disposal Sites.......................... 17 10.1.1 Methodological issues or problems relating to this category............................. 17 10.1.2 Issues relating to activity data and emission factors...........................................18 Addressing issues relating to activity data.....................................................................18 Addressing issues relating to emission factors.............................................................. 18 Sources of activity data and emission factors................................................................18 Emissions from Wastewater Handling......................................................................................... 18 11.1 Issues in estimati