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Page 4148, results 103676 - 103700

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Selected quality assurance data for water samples collected by the US Geological Survey, Idaho National Engineering Laboratory, Idaho, 1980 to 1988
S.J. Wegner
1989, Water-Resources Investigations Report 89-4168
Multiple water samples from 115 wells and 3 surface water sites were collected between 1980 and 1988 for the ongoing quality assurance program at the Idaho National Engineering Laboratory. The reported results from the six laboratories involved were analyzed for agreement using descriptive statistics. The constituents and properties included: tritium,...
Quality of water from public-supply wells in principal aquifers of Illinois, 1984-87
David C. Voelker
1989, Water-Resources Investigations Report 88-4111
The quality of water from public-supply wells that tap the principal aquifers in Illinois are summarized. Water quality data collected during the study included inorganic and volatile organic constituents in 2,756 samples and soluble organic constituents in 330 samples from 2,080 public supply wells. Water quality differs among the aquifers...
Evaluation of methodology for delineation of protection zones around public-supply wells in west-central Florida
John Vecchioli, J. D. Hunn, W. R. Aucott
1989, Water-Resources Investigations Report 88-4051
Public-supply wells in the west-central Florida area of Citrus, Hernando, Pasco, Hillsborough, and Pinellas Counties derive their supply solely from the Floridan aquifer system. In much of this area, the Floridan is at or near land surface and vulnerable to contamination. Recognizing this potential threat to the aquifer, the Florida...
Variable-density ground-water flow and paleohydrology in the Waste Isolation Pilot Plant (WIPP) region, southeastern New Mexico
P. B. Davies
1989, Open-File Report 88-490
Variable-density groundwater flow was studied near the Waste Isolation Pilot Plant in southeastern New Mexico. An analysis of the relative magnitude of pressure-related and density-related flow-driving forces indicates that density-related gravity effects are not significant at the plant and to the west but are significant in areas to the north,...
Applicability of ambient toxicity testing to national or regional water-quality assessment
J. F. Elder
1989, Open-File Report 89-55
Comprehensive assessment of the quality of natural waters requires a multifaceted approach. Based on experimentation designed to monitor responses of organisms to environmental stresses, toxicity testing may have diverse purposes in water quality assessments. These purposes may include identification that warrant further study because of poor water quality or unusual...
Effect of urban runoff on the quality of lakes in Eagan, Minnesota
L. H. Tornes
1989, Water-Resources Investigations Report 86-4331
Sixteen lakes in the city of Eagan, Minnesota, were sampled during 1982-83 to detect water-quality changes that might have occurred because of urbanization since a previous study conducted during 1972-78. Each of the lakes was sampled five times to determine pH, specific conductance, dissolved oxygen, water temperature, transparency, and concentration...