Disclaimer

The purpose of the ambient air quality monitoring site in Williston is to obtain actual air quality data for five pollutants; beryllium, nickel, arsenic, cadmium and lead.

The monitoring site operates on a ten day schedule. This means that the filter in the monitor on which the pollutants are collected is changed every ten days. Because of this schedule and since the wind generally does not blow continuously from the same direction for ten days, the results are influenced by a number of sources including natural events (i.e., wind-blown dust).

The determination of source contributions must be made taking into account other information including meteorological data. Therefore, caution is urged when attempting to draw any conclusions about source contributions until all pertinent information is obtained and enough monitoring data is obtained to indicate statistically valid trends.

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For more information, contact Justin Mayer, Manager Air Quality Monitoring at 701.328.5188.

Copyright © 2005 North Dakota Department of Health
Email: health@nd.gov

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