||Water and air quality trends in Region VIII (1978 data) /
Entzminger, Thomas A. ;
Sotiros, Richard ;
Tabor., William H. ;
||Environmental Protection Agency, Denver, CO. Surveillance and Analysis Div.
|| U.S. Environmental Protection Agency,
Great Plains--Environmental conditions ;
Water quality--Great Plains ;
Air quality--Great Plains ;
United States--Environmental Protection Agency--Region VIII ;
Air pollution ;
Water pollution ;
Dissolved gases ;
Suspended sediments ;
North Dakota ;
South Dakota ;
Region 8 ;
Water quality ;
Air quality ;
Total dissolved solids ;
Air pollution sampling ;
Water pollution sampling ;
Storage and retrieval of water quality data ;
Storage and retrieval of aerometric data
||Region 8 Technical Library/Denver,CO
||Some EPA libraries have a fiche copy filed under the call number shown.
||xi, 215 pages : figures, tables, maps ; 28 cm
Water and air quality trends and status for the calendar year 1978 were determined for the six states in Region VIII. These states are Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming. Data resident in EPA national data banks (STORET, SAROAD) were analyzed. Statistical tests which detect significant differences between two populations were utilized to show trends in both air and water quality. The status and severity of stream pollutants were determined by relating parameter concentrations to Water Quality Indicator (WQI) values on a numerical scale from 0 to 100. The status and severity of air pollutants reported continues to be a direct measure of air quality standard and alert level exceedences.
"EPA-908/2-79-001." "October 1979."