You should also ensure that you have the latest version of the NPI Guide

About this Manual

National Pollutant Inventory (NPI) Emission Estimation Technique (EET) manuals provide guidance to assist facility reporters to report emissions and transfers of NPI substances to the NPI. This Manual describes the procedures and recommended approaches for estimating emissions from facilities engaged in the operation of intensive poultry raising facilities.

Intensive poultry raising consists of poultry kept in cages in large sheds with a typical operation raising 50,000 or more animals at a time (Jiang, 2000). Intensive poultry raising operations consist of a number of activities including feedstock storage, feeding systems, animal housing, disposal of biological matter, waste removal/storage and waste treatment.

First published in June 2002
Version 2.0 - July 2012
Version 3.0 - July 2013

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. 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