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Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).

GeoHEALTH-USGS Newsletter

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The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.

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Featured Science Activities

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Lean about our Featured Science Activities through our pages that highlight science studies, publications, and results.

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Filter Total Items: 3740

Evaluation of unsaturated zone air permeability through pneumatic tests

Predicting the steady state distribution of air pressure in the unsaturated zone resulting from a pneumatic test provides a method for determining air-phase permeability. This technique is analogous to the inverse problem of well hydraulics; however, air flow is more complicated than ground water flow because of air compressibility, the Klinkenberg effect, variations in air density and viscosity t
Authors
Arthur L. Baehr, Marc F. Hult
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Effects of surfactants on the mobility of nonpolar organic contaminants in porous media

No abstract available.
Authors
J. A. Smith, D. Tucker, P. R. Jaffe, R.T. Mueller
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

A thermodynamic partition model for binding of nonionic organic compounds by organic colloids and implications for their sorption to soils and sediment

No abstract available.
Authors
U.P. Chin, Walter J. Weber, C. T. Chiou
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Parameters involved in modeling movement of bacteria in groundwater

No abstract available.
Authors
Ronald W. Harvey
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Particulate and colloidal organic material in Pueblo Reservoir, Colorado--Influence of autochthonous source on chemical composition

No abstract available. 
Authors
J. F. Ranville, R.A. Harnish, D.M. McKnight
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85

The movement of water and tritium through the unsaturated zone was studied at a low-level radioactive-waste disposal site near Sheffield, Bureau County, Illinois, from 1981 to 1985. Water and tritium movement occurred in an annual, seasonally timed cycle; recharge to the saturated zone generally occurred in the spring and early summer. Mean annual precipitation (1982-85) was 871 millimeters; mean
Authors
P.C. Mills, R. W. Healy
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Partitioning of elements between two size sediment fractions in samples from nineteen areas of the Western United States

No abstract available.
Authors
R. C. Severson, K. C. Stewart, Thelma F. Harms
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991

An approach was developed to obtain a consistent, regional distribution of herbicide and nitrate data from near-surface aquifers in the corn and soybean producing region of the mid-continent. Near-surface aquifers are defined as those with the top of aquifer material within 50 feet of land surface, regardless of whether the material is saturated or unsaturated. Three hundred wells will be selected
Authors
D.W. Kolpin, M. R. Burkart
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Central Midwest Water Science Center

Assessment of hydrogeologic conditions with emphasis on water quality and wastewater injection, Southwest Sarasota and West Charlotte counties, Florida

No abstract available.
Authors
C. B. Hutchinson
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Geochemical investigation of an oil spill in San Francisco Bay, California

No abstract available.
Authors
F. D. Hostettler, J. B. Rapp, K. A. Kvenvolden
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Water-extractable geochemical data for native and irrigated soils from the Kendrick Reclamation Project Area, Wyoming, 1988-89

No abstract available.
Authors
J. G. Crock, R. C. Severson, James A. Erdman
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Wyoming-Montana Water Science Center

User's manual for WATEQ4F, with revised thermodynamic data base and text cases for calculating speciation of major, trace, and redox elements in natural waters

No abstract available.
Authors
J. W. Ball, D. Kirk Nordstrom
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program