Dispersion Modeling

The North Dakota Department of Health, Division of Air Quality has developed the following guidance and policy documents to assist permit applicants in the process of drafting complete permit applications.

For more information on Dispersion Modeling in North Dakota, please direct questions or comments to the North Dakota Department of Health at 701.328.5188, or email Rob White (rwhite@nd.gov).

Dispersion Modeling

Dispersion modeling for criteria pollutants and air toxics may be required prior to issuance of a Permit to Construct in accordance with the Criteria Pollutant Modeling Requirements for a Permit to Construct and Air Toxics Policy.  For facilities with compressor engines and glycol dehydration units, dispersion modeling may be required in accordance with the Dispersion Modeling Requirements for Compressor Engines and Glycol Dehydration Units.

Air Quality Analysis Guide

The Department strongly encourages the development of a pre-application dispersion modeling protocol in consultation with the Department in order to expedite the project review process. To aid the applicant in this process, the following Air Quality Analysis Guide has been provided.

Related Links

More information about air dispersion modeling can be found on EPA's Support Center for Regulatory Atmospheric Modeling (SCRAM) site or through their Technology Transfer Network Clearinghouse for Inventories & Emission Factors site.

Air Monitoring

Construction Permitting

Regional Haze Program


Rev. Date


AERMET Surface & Upper-Air Meteorology Station 2004 to 2008 Modeling
Air Dispersion Modeling for Emergency Engines / Flares 06 October 2014 Modeling
Compressor Engines & Glycol Dehydration Units 23 January 2015 Modeling
Criteria Pollutant Modeling Requirements for a Permit to Construct 06 October 2014 Modeling
Hourly Ozone Sites 2004 to 2008 Modeling
Model Input Parameters for Flares 10 November 2010 Modeling
Policy for the Control of Hazardous Air Pollutant (HAP) Emissions in ND (Air Toxics Policy) 25 August 2010 Modeling
Recommended AERSURFACE Inputs (North Dakota) 16 September 2010 Modeling
User's Instructions for HRLYNAAQS 24 September 2010 Modeling
Air Quality Dispersion Modeling Analysis Guide 21 June 2013 Modeling

Last Updated: 10/03/2016

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