Subsurface Point-Source Contamination:

• Geochemical and Microbiological Processes that Affect Migration and Natural Attenuation of Chlorinated Solvents in Fractured Sedimentary Rock
  
• Ground Water Flow and Transport in Fractured Rock
  
• Waste Disposal and Contaminant Migration in the Arid Southwest
  
• Sewage-Contaminated Ground Water
  
• Crude Oil Contamination in the Shallow Subsurface
  
• Processes Affecting the Natural Attenuation of Fuels in Ground Water
  
• Environmental Impacts Associated with Disposal of Saline Water Produced During Petroleum Production
  
• Fate of Landfill Leachate
  
• Processes that Control the Natural Attenuation of Chlorinated Solvents
  

Watershed- and Regional Scale Contamination:

• Pesticide Investigations
  
• Varied Human Influences on Estuaries
  
• Contamination Associated with Active and Abandoned Hard Rock Mining
  
• Effect of Mercury on Aquatic Ecosystems
  
• Emerging Contaminants in the Environment
  
• Amphibian Research and Monitoring Initiative (ARMI)

Development and Research:

• USGS Mobile Atmospheric Mercury Laboratory
  
• Multifunction Bedrock-Aquifer Transportable Testing Tool (BAT³)
  
• Determining the Benthic Flux of Dissolved Metals
  
• Hexavalent Chromium Field Speciation Method Photo Gallery
  
• Diurnal Metal Variations in Streams
  
• Passive-Vapor-Diffusion Sampler
  
• Tracer Tests
  
• Laboratory Experiments
  
• Tree Coring
  
• Sample-Freezing Drive Shoe
  
• Simplified Method for Detecting Tritium Contamination in Plants and Soils
  
  

Links to project photo galleries:

- Osage-Skiatook Petroleum Environmental Research Project
- Laurel Bay Research Site
- Amargosa Desert Research Site
- Cape Cod Research Site
- Bemidji Crude Oil Research Site
- Galloway New Jersey Research Site
- Abandoned Mine Lands Initiative
- Upper Arkansas River Basin Site
- Amphibian Research and Monitoring Initiative