Ambient Air Quality Monitoring Program


The State of Nebraska operates an ambient air-monitoring network to comply with the requirements of the Federal Clean Air Act and to determine compliance with the National Ambient Air Quality Standards (NAAQS) and State Ambient Air Quality Standards (SAAQS). In addition, the Nebraska network includes two sites for monitoring regional haze impacts that are part of a national program to help protect National Parks and Monuments.

Three agencies are involved in the day-to-day operation of the network: the Nebraska Department of Environmental Quality, the Douglas County Health Department, and the Lincoln/Lancaster County Health Department. The Omaha Air Quality Program (which is within the Omaha Public Works Department) also provides periodic support for network related activities.

NAAQS have been established for seven pollutants:
The National Ambient Air Quality Standards were established to protect both public health (which is termed a Primary Standard) and Public Welfare (which is termed a Secondary Standard and protects against excessive soiling, materials corrosion and crop damage). For all of the pollutants except sulfur dioxide, the National Ambient Air Quality Standards are listed as combined primary and secondary standards (i.e., protective of both human health and welfare). For Sulfur Dioxide, separate primary and secondary standards are listed.

The State Ambient Air Quality Standards are identical to the National Ambient Air Quality Standards with respect to the seven pollutants above, and also contain a standard for Total Reduced Sulfur (TRS). The TRS standard is a public health based standard.

Monitoring results indicate that all areas of the State are in compliance with the standards, with the exception of some short-term exceedances of the TRS standard in Dakota City (47 minutes in April 2003 and 10 minutes in April 2004). There have been significant reductions in TRS levels since 2001 and the Department continues monitoring in this area. For a more complete explanation of monitoring findings, please refer to the Nebraska Air Quality Report, which is published annually.

The monitoring network within the state is comprised of 36 monitors at 30 sites. See the table below titled Nebraska’s Air Monitoring Network - Summary Description for an overview description of monitor and site locations. For a more detailed description of the network, please refer to the Nebraska Air Monitoring Network Review, which like the Nebraska Air Quality Report is published annually.

The network is re-evaluated annually (see the Nebraska Air Monitoring Network Review) and is subject to ongoing modification to address changing conditions or standards, new information, and modernization. The highlight bullets that follow the Nebraska’s Air Monitoring Network – Summary Description table provide a good summary of recent changes

Nebraska’s Air Monitoring Network - Summary Description
June 2004

Omaha Metro Area (Douglas and Sarpy Counties)
Monitors operated by the Douglas County Health Department
PM10
5 monitors at 4 sites
PM2.5
9 monitors at 4 sites, including collocated continuous and speciation monitors
Ozone
3 monitors at 3 sites *
Carbon Monoxide
2 monitors at 2 sites *
Sulfur Dioxide
2 monitors at 2 sites
Lead
None, discontinued in 2002
Toxics
A study of potential toxic air pollutants was conducted in the Dundee Neighborhood in cooperation with the Omaha Air Quality Program,USEPA, Agency for Toxic Substances and Disease Registry (ATSDR - An agency of the US Department of Health and Human Services), and NDEQ.
* The site at 30th & Fort Streets has both ozone and a carbon monoxide monitor.
Lincoln Metro Area
Monitors operated by the Lincoln/Lancaster Health Department
PM2.5
2 monitors at 1 site
Ozone
1 monitor at 1 site
Carbon Monoxide
1 monitor at 1 site
Weeping Water
3 PM10 monitors at 2 sites
1 PM2.5 monitor at 1 site
Operated by NDEQ
Blair
1 PM2.5 monitor at 1 site
Operated by DCHD
Cozad
1 PM10 monitor at 1 site
Operated by NDEQ
Gothenburg
1 PM10 monitor at 1 site
Operated by NDEQ
Grand Island
1 PM2.5 monitor at 1 site
Operated by NDEQ
North Platte
1 PM2.5 monitor at 1 site
Operated by NDEQ
Scottsbluff
1 PM2.5 monitor at 1 site
Operated by NDEQ
Dakota City
1 TRS monitor at 1 site
Operated by NDEQ
South Sioux City
1 TRS monitor at 1 site
Operated by NDEQ
Lexington
1 TRS monitor at 1 site
Operated by NDEQ
IMPROVE monitor sites for the study of regional haze
    Two Sites operated under contracts administered by the NDEQ:
      Nebraska National Forest In Thomas County
      Crescent Lake Wildlife Refuge in Garden County
    One site operated by the Omaha Tribe of Nebraska and Iowa and administered by USEPA:
      Omaha Indian Reservation in Thurston County

Highlights of Changes and Events Related to Nebraska’s Air Monitoring Network
Ambient Air Quality Monitoring Data

Air Quality Publications, Forms and Applications



Nebraska Department of Environmental Quality
1200 "N" Street, Suite 400
P.O. Box 98922
Lincoln, Nebraska 68509
(402) 471-2186