Reporting of Emissions
Companies that have been issued an air pollution control permit to operate
by the Department may be
required to submit an Annual
Emission Inventory Report (AEIR) to the North Dakota Department of Health.
At the beginning of each year, the Department will send letters to the
company AEIR contact person responsible for submitting emission inventory reports. The
reports will address emissions during the previous year (January
1-December 31) and are due by March 15 unless a later date is specified in
the permit (Click here to download emission inventory forms).
Uses of Emission
data are used to determine compliance with regard to emission limits
and/or permit conditions; to identify emission levels, patterns, and
trends; to serve as the basis for modeling of predicted pollutant
concentrations in ambient air; to provide input for human health risk
assessment studies; and to serve as a basis for determining annual
permit-to-operate fees. For details about permit-to-operate fees, see
of the North Dakota Air Pollution Control Rules.
Emission inventories should be as accurate and complete as possible.
Emission data should be included for each significant unit/activity listed
on the Air Pollution Control Permit to Operate for the installation.
The following methodologies can be used to determine emissions: (1)
continuous emission monitors [CEMS], (2) source [stack] testing, (3) material
balance, (4) emission factors [AP-42 or WebFire], (5) fuel analysis, (6) emission
estimation models, or (7) engineering judgment. Each
report should be based on the methodology that results in the most accurate representation of
Annual emission inventory reports are available for the following years in pdf format:
Annual emission inventory reports are available for the following years in Excel format:
Questions may be addressed to the North Dakota Department of Health at 701.328.5188,
or email Lew Dendy.