CLICK PHOTOS FOR AN ENLARGED VERSION
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A view of the berm of the Normal Municipal Landfill, OK, and the area that
overlies the leachate plume
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Map of the study area showing well transect location and ground-water flow direction
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Collecting pore waters from a core to determine natural attenuation rates
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USGS scientist using a syringe to withdraw water for analysis of geochemical parameters
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Passive-diffusion samples ("peepers") are driven into a wetland to observe the geochemistry of the leachate plume's discharge area |
USGS scientists analyzing water samples in the field |
Gas samples are collected from an unsaturated zone well to study the natural biodegradation of contaminants |
A dual-frequency GPS receiver is used to survey passive-diffusion samples ("peepers") in a wetland at the leading edge of the leachate plume |
Installation of a well in the unsaturated zone above the leachate plume |
USGS scientists analyzing samples for a study of the microbial-mediated degradation of landfill leachate |
USGS scientist collecting water samples from a multilevel monitoring well |
Collecting water samples anaerobically in a glove bag to accurately measure redox-sensitive parameters |
Collecting samples anaerobically in a glove bag as part of a study of the biogeochemistry of the landfill leachate plume |
Sampling redox-sensitive water-quality parameters on-site
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USGS scientists installing a drive point well for contaminant transport studies
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