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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

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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January 1, 2003

Arsenic in southeastern Michigan Arsenic in southeastern Michigan

Arsenic levels exceeding 10 μg/L are present in hundreds of private supply wells distributed over ten counties in eastern and southeastern Michigan. Most of these wells are completed in the Mississippian Marshall Sandstone, the principal bedrock aquifer in the region, or in Pleistocene glacial or Pennsylvanian bedrock aquifers. About 70% of ground water samples taken from more than 100...

Authors

Allan Kolker, Sheridan K. Haack, William F. Cannon, D.B. Westjohn, M.-J. Kim, Laurel G. Woodruff

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Geology, Energy & Minerals Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 2003

Effects of microbiological and geochemical interactions in mine drainage Effects of microbiological and geochemical interactions in mine drainage

No abstract available.

Authors

D. Kirk Nordstrom

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2003

Deep fluids in the continents: I. Sedimentary basins Deep fluids in the continents: I. Sedimentary basins

No abstract available.

Authors

Yousif K. Kharaka, J.S. Hanor

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2003

In situ arsenic remediation in a fractured, alkaline aquifer In situ arsenic remediation in a fractured, alkaline aquifer

No abstract available.

Authors

A. H. Welch, Kenneth G. Stollenwerk, D. K. Maurer, Lawrence S. Feinson

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, New Jersey Water Science Center

January 1, 2003

The groundwater geochemistry of waste disposal facilities The groundwater geochemistry of waste disposal facilities

No abstract available.

Authors

P.L. Bjerg, H.-J. Albrechtsen, P. Kjeldsen, T. Christensen, Isabelle M. Cozzarelli

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Reston Biogeochemical Processes in Groundwater Laboratory

January 1, 2003

Mass balance approach to interpreting weathering reactions in watershed systems Mass balance approach to interpreting weathering reactions in watershed systems

No abstract available.

Authors

O.P. Bricker, Blair F. Jones, C.J. Bowser

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2003

Occurrence of arsenic in ground water of the Middle Rio Grande Basin, central New Mexico Occurrence of arsenic in ground water of the Middle Rio Grande Basin, central New Mexico

Chemical data from more than 400 ground-water sites in the Middle Rio Grande Basin of central New Mexico indicate that arsenic concentrations exceed the U.S. Environmental Protection Agency drinking-water standard of 10 micrograms per liter across broad areas of the Santa Fe Group aquifer system, which is currently the almost exclusive source of drinking-water supply for residents of the...

Authors

L.N. Plummer

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, New Mexico Water Science Center

January 1, 2003

How fast does water flow in an unsaturated macropore? Evidence from field and lab experiments How fast does water flow in an unsaturated macropore? Evidence from field and lab experiments

A wide range of available field and lab evidence can lead to useful generalizations about the speed of macropore flow, which often dominates the transport of water and contaminants. In 36 published field tests, the values of maximum transport speed in macropores and other preferential channels vary surprisingly little. The available tests vary widely in type of medium, including...

Authors

John R. Nimmo

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2003

Microbial degradation of atmospheric halocarbons Microbial degradation of atmospheric halocarbons

Halocarbons are present in the atmosphere at parts-per-trillion (ppt) mixing ratios and are represented by such substances as chlorofluorocarbons (CFCs), hydrochlolofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), and methyl halides like methyl bromide (MeBr) and their further substituted halomethane analogues (e. g., dibromomethane, bromoform). Many Halocarbons have only an...

Authors

Ronald S. Oremland

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2003