United States Geological Survey YearbookThe Survey, 1990 - Geology |
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Page 19
... contamination from potentially toxic trace elements and manmade trace organic sub- stances that enter surface and ground water largely from nonpoint sources , such as urban storm drainage and agricultural and forestry practices . Water ...
... contamination from potentially toxic trace elements and manmade trace organic sub- stances that enter surface and ground water largely from nonpoint sources , such as urban storm drainage and agricultural and forestry practices . Water ...
Page 20
... contamination that has resulted in waste plumes in ground water and degraded stream reaches and regional - scale field studies of the occurrence and movement of toxic substances and the controlling of natural and human factors ...
... contamination that has resulted in waste plumes in ground water and degraded stream reaches and regional - scale field studies of the occurrence and movement of toxic substances and the controlling of natural and human factors ...
Page 22
... contaminated by fecal material , help determine the occur- rence and distribution of potentially toxic substances , and define the relations between the physical and the chemical characteristics of streams and the functional and ...
... contaminated by fecal material , help determine the occur- rence and distribution of potentially toxic substances , and define the relations between the physical and the chemical characteristics of streams and the functional and ...
Page 27
... contamination by agrichemicals . The Deep Continental Studies Program conducts research to obtain information on the composition , structure , formation , and evolution of the middle and lower crust and upper mantle of the Earth . The ...
... contamination by agrichemicals . The Deep Continental Studies Program conducts research to obtain information on the composition , structure , formation , and evolution of the middle and lower crust and upper mantle of the Earth . The ...
Page 29
... contamination of surface and ground water to assist the Depart- ment of Energy in developing procedures and guidelines for identifying suitable waste- disposal sites . Radioactive - waste studies are conducted in the Nuclear Waste ...
... contamination of surface and ground water to assist the Depart- ment of Energy in developing procedures and guidelines for identifying suitable waste- disposal sites . Radioactive - waste studies are conducted in the Nuclear Waste ...
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activities Administration Alaska Arctic areas Assistant atrazine Award Baikal Bldg Board Bureau cartographic data Chief Hydrologist City City of w coal coastal Commission contamination cooperative Coordination County Denver Federal Center Department of Public Development disaster Division Chief drought earth science earthquake Environmental eruption Federal agencies field geologic map geologists geophysical ground water ground-water Hurricane Hugo hydrologic IDNDR Information Systems Interior investigations Island Lake Lake Baikal land lava located Loma Prieta earthquake Loudoun County Management Menlo Park ment miles mineral deposits mineral resources National Center National Mapping National Water NAWQA Office percent Planning production Puerto Rico Redoubt volcano Regional Reston River basin rock scale scientific scientists seismic Service spatial data storage storm studies surface tion Transportation U.S. Department U.S. Geological Survey U.S. Virgin Islands United users USGS Water Conservation District Water District water quality Water Resources Water-Quality Assessment