Publications
Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).
Filter Total Items: 3787
Spatial and temporal distribution of specific conductance, boron, and phosphorus in a sewage-contaminated aquifer near Ashumet Pond, Cape Cod, Massachusetts
Spatial and temporal distributions of specific conductance, boron, and phosphorus were determined in a sewage-contaminated sand and gravel aquifer near Ashumet Pond, Cape Cod, Massachusetts. The source of contamination is secondarily treated sewage that has been discharged onto rapid- infiltration sand beds at the Massachusetts Military Reservation since 1936. Contaminated ground water containing
Authors
K.W. Bussey, D. A. Walter
Schlumberger soundings at the Norman Landfill, Norman, Oklahoma
No abstract available.
Authors
R.J. Bisdorf
Transport of agricultural chemicals in surface flow, tileflow, and streamflow of Walnut Creek Watershed near Ames, Iowa, April 1991-September 1993
The U.S. Geological Survey, in cooperation with the National Soil Tilth Laboratory of the U.S. Department of Agriculture, Agricultural Research Service, conducted a study as part of the multi-scale, inter-agency Management Systems Evaluation Area (MSEA) program to evaluate the effects of agricultural management (farming) systems on water quality. Data on surface flow, tileflow, and streamflow in t
Authors
P. J. Soenksen
Selected meteorological and micrometeorological data for an arid site near Beatty, Nye County, Nevada, calendar year 1992
il-heat-flux data were collected at a study site adjacent to a low-level radioactive-waste burial facility near Beatty, Nevada, for calendar year 1992. Data were collected in support of ongoing studies to estimate the potential for downward movement of radionuclides into the unsaturated sediments beneath waste-burial trenches at the arid facility. Data collected for the whole year include air temp
Authors
James L. Wood
Water-quality, bed-sediment, and biological data (October 1994 through September 1995) and statistical summaries of data for streams in the upper Clark Fork basin, Montana
Water, bed sediment, and biota were sampled in streams from Butte to below Missoula as part of a program to characterize aquatic resources in the upper Clark Fork basin of western Montana. Sampling stations were located on the Clark Fork and major tributaries. Water-quality data were obtained periodically at 16 stations during October 1994 through September 1995 (water year 1995). Data for twelve
Authors
K. A. Dodge, Michelle I. Hornberger, E.V. Axtmann
Flexible digestion strategies and trace metal assimilation in marine bivalves
Pulse-chase experiments show that two marine bivalves take optimal advantage of different types of particulate food by varying food retention time in a flexible two-phase digestive system. For example, carbon is efficiently assimilated from bacteria by subjecting nearly all the ingested bacteria to prolonged digestion. Prolonging digestion also enhances assimilation of metals, many of which are to
Authors
Alan W. Decho, Samuel N. Luoma
Importance of dissolved sulfides and organic substances in controlling the chemical speciation of heavy metals in San Francisco Bay
No abstract available.
Authors
J.S. Kuwabara, C.C.Y. Chang, A.I. Khechfe, Y.R. Hunter
Regional differences in the origins of organic matter in the San Francisco Bay ecosystem: evidence from lipid biomarkers
No abstract available.
Authors
E. A. Canuel, J. E. Cloern
Interannual climate variability and snowpack in the western United States
An important part of the water supply in the western United States is derived from runoff fed by mountain snowmelt Snow accumulation responds to both precipitation and temperature variations, and forms an interesting climatic index, since it integrates these influences over the entire late fall-spring period. Here, effects of cool season climate variability upon snow water equivalent (SWE) over th
Authors
Daniel R. Cayan
Hydrologic evaluation methodology for estimating water movement through the unsaturated zone at commercial low-level radioactive waste disposal site
This report identifies key technical issues related to hydrologic assessment of water flow in the unsaturated zone at low-level radioactive waste (LLW) disposal facilities. In addition, a methodology for incorporating these issues in the performance assessment of proposed LLW disposal facilities is identified and evaluated. The issues discussed fall into four areas:Estimating the water balance at
Authors
P.D. Meyer, M.L. Rockhold, W.E. Nichols, G.W. Gee
Numerical evaluation of static-chamber measurements of soil-atmospheric gas exchange--Identification of physical processes
The exchange of gases between soil and atmosphere is an important process that affects atmospheric chemistry and therefore climate. The static-chamber method is the most commonly used technique for estimating the rate of that exchange. We examined the method under hypothetical field conditions where diffusion was the only mechanism for gas transport and the atmosphere outside the chamber was maint
Authors
Richard W. Healy, Robert G. Striegl, Thomas F. Russell, Gordon L. Hutchinson, Gerald P. Livingston
Uncertainties in assessing contaminant exposure from sediments
No abstract available.
Authors
S. N. Luoma, N.S. Fisher