About this Manual

The purpose of all Emission Estimation Technique (EET) Manuals in this series is to assist Australian manufacturing, industrial and service facilities to report emissions of listed substances to the National Pollutant Inventory (NPI). This Manual describes the procedures and recommended approaches for estimating fugitive emissions. Fugitive emissions can be defined as releases not confined to a stack, duct or vent. These emissions generally include equipment leaks, emissions from the bulk handling or processing of raw materials, windblown dust and a number of other specific industrial processes.

An overview of the fugitive emissions covered in this Manual

• Point Sources
• Equipment Leaks
• Open Vats and Mixing
• Storage Tanks
• Wastewater Treatment
• Emissions from Cooling Towers
• Maintenance Operations
• Vehicle Movement and Exhaust
• Liquid Spills
• Storage Piles
• Bulk Materials Handling and Unit Operations
• Loading and Unloading of Vehicles
• Painting
• Equipment Cleaning and Solvent Degreasing
• Surface Coating
• Abrasive Blasting
• Asphalt Pavin
• Construction and Demolition
• Welding
• Open Area Wind Erosion

First published in December 1999
National Pollutant Inventory
Environment Australia

Emission Estimation Techniques Used in the Manuals

Estimates of emissions of NPI-listed substances to air, water and land should be reported for each substance that triggers a threshold. The reporting list and detailed information on thresholds are contained in the NPI Guide at the front of this Industry Handbook. In general, there are four types of emission estimation technique (EET) that may be used to estimate emissions from a facility.

The four types described in the NPI Guide are:

• sampling or direct measurement
• mass balance
• fuel analysis or other engineering calculations
• emission factors