About this Manual

The aggregated emissions manuals complement the NPI Industry handbooks, and are intended to enable State and Territory Governments to estimate emissions from non-industrial activities (e.g. transportation, domestic and commercial activities) and emissions from industry which are not reported because the relevant thresholds are not exceeded.

This manual provides guidance on the estimation of aggregated emissions from domestic lawn mowing. This activity can be a significant contributor to overall area-based emissions, particularly for lead and some VOCs.

First published in November 1999
National Pollutant Inventory
Environment Australia

Application of the Manual

Each of the aggregated emissions manuals provides details of:

• the NPI substances that are expected to be emitted from the relevant aggregated source type;
• the origins or sources of the emissions, and the processes that may generate them;
• the impacts of any control equipment or procedures on those emissions;
• the broad approaches that may be employed in the estimation and spatial allocation of emissions;
• details of emission factors to be used in the estimation of emissions; and
• a series of illustrative sample calculations for each estimation technique.