Guidelines & Tools Emission Estimation Technique Manuals Published 2023 Share SHARE Facebook share Twitter LinkedIn Copy URL Email Download Download national-pollutant-inventory-guide en Added on: 26 August, 2026 Breadcrumb Home Resource Library Emission Estimation Technique Manuals The following emission estimation technique (EET) manuals are approved for use by industry in Australia. There are 94 EET manuals.EET manuals are listed by industry sector. Some industry sectors may require one or more EET manual. The National Pollutant Inventory Guide (NPI Guide) should be used in conjunction with all manuals. Diffuse emissions manuals can also be used to estimate emissions at your facility.