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Method of analysis and quality-assurance practices for determination of pesticides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry at the U.S. Geological Survey California District Organic Chemistry Laboratory, 1996-99
Kathryn L. Crepeau, Lucian M. Baker, Kathryn Kuivila
2000, Open-File Report 2000-229
A method of analysis and quality-assurance practices were developed to study the fate and transport of pesticides in the San Francisco Bay-Estuary by the U.S. Geological Survey. Water samples were filtered to remove suspended-particulate matter and pumped through C-8 solid-phase extraction cartridges to extract the pesticides. The cartridges were dried...
Physical characteristics of stream subbasins in the Redeye (Leaf) River Basin, central Minnesota
Christopher A. Sanocki, Brian C. Fischer
2000, Open-File Report 2000-234
Data that describe the physical characteristics of stream subbasins upstream from selected sites on streams in the Redeye (Leaf) River Basin, located in central Minnesota, are presented in this report. The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes,...
A Synopsis of Technical Issues of Concern for Monitoring Trace Elements in Highway and Urban Runoff
Robert F. Breault, Gregory E. Granato
2000, Open-File Report 2000-422
Trace elements, which are regulated for aquatic life protection, are a primary concern in highway- and urban-runoff studies because stormwater runoff may transport these constituents from the land surface to receiving waters. Many of these trace elements are essential for biological activity and become detrimental only when geologic or anthropogenic...
Preliminary method for anticipating the occurrence of precipitation-induced landslides in Seattle, Washington
Alan F. Chleborad
2000, Open-File Report 2000-469
Analysis of precipitation data associated with historical landslide events in Seattle has resulted in the identification of precipitation thresholds for the initiation of landslides. Also, an air-temperature index for multiple landslide events is identified, and in conjunction with the precipitation thresholds, is used to develop a method for anticipating the...
Interim report on the scientific investigations in the Animas River watershed, Colorado to facilitate remediation decisions by the U.S. Bureau of Land Management and the U.S. Forest Service, March 29, 2000 meeting, Denver, Colo.
Water Resources Division, U.S. Geological Survey
2000, Open-File Report 2000-245
INTRODUCTION The joint U.S. Department of the Interior and U.S. Department of Agriculture Abandoned Mine Lands Initiative (AMLI) was developed as a collaborative effort between the Federal land management agencies (FLMA, that is the U.S. Bureau of Land Management and the U.S. Forest Service) and the U.S. Geological Survey (USGS) in 1996. The stated...
Physical characteristics of stream subbasins in the Sauk River basin, central Minnesota
Christopher A. Sanocki, Brian C. Fischer
2000, Open-File Report 2000-233
Data that describe the physical characteristics of stream subbasins upstream from selected sites on streams in the Sauk River Basin, located in central Minnesota, are presented in this report. The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes, the...
A Synopsis of Technical Issues for Monitoring Sediment in Highway and Urban Runoff
Gardner C. Bent, John R. Gray, Kirk P. Smith, G. Douglas Glysson
2000, Open-File Report 2000-497
Accurate and representative sediment data are critical for assessing the potential effects of highway and urban runoff on receiving waters. The U.S. Environmental Protection Agency identified sediment as the most widespread pollutant in the Nation's rivers and streams, affecting aquatic habitat, drinking water treatment processes, and recreational uses of rivers,...
U. S. Geological Survey Middle Rio Grande basin study: Proceedings of the Fourth annual workshop, Albuquerque, New Mexico, February 15-16, 2000
J. C. Cole
2000, Open-File Report 2000-488
This volume contains a collection of short papers that document some of the conclusions and results of on-going investigations related to ground-water resources of the Middle Rio Grande Basin, New Mexico. These results, and additional project reports, were presented at the Fourth Annual Middle Rio Grande Basin workshop convened in...