A5004718162- Groundwater flow and contamination studies
- Geophysical and Geoelectrical Methods
- Hydraulic Fracturing and Reservoir Analysis
- Reservoir Engineering and Simulation Methods
- Groundwater and Isotope Geochemistry
- Landfill Environmental Impact Studies
- Mineral Processing and Grinding
- Geophysical Methods and Applications
- Seismic Waves and Analysis
- Viral Infections and Outbreaks Research
- Grouting, Rheology, and Soil Mechanics
- Atmospheric and Environmental Gas Dynamics
- Recycled Aggregate Concrete Performance
Pumped groundwater sampling evaluations often assume that horizontal head gradients predominate and the sample comprises an average of water quality variation over well screen interval weighted towards contributing zones higher hydraulic conductivity (a permeability-weighted sample). However, pumping rate used during may not always be sufficient to overcome vertical flows in wells driven by ambient gradients. Such are reported with screens between 3 10m length where lower rates more likely...
Groundwater-quality assessment at contaminated sites often involves the use of short-screen (1.5 to 3 m) monitoring wells. However, even over these intervals considerable variation may occur in contaminant concentrations groundwater adjacent well screen. This is especially true heterogeneous dense non-aqueous phase liquid (DNAPL) source zones, where cm-scale contamination variability call into question effectiveness wells deliver representative data. The utility such settings evaluated by...
A comparison of groundwater and gas monitoring data is provided between multilevel conventional long-screened boreholes constructed around the perimeter a closed landfill in English Midlands. Multilevel were with up to seven separate sampling ports. All into strata Triassic Mercia Mudstone Group, which proved consist succession well-bedded, weathered mudstone clay occasional thin beds siltstone sandstone approximately 30 m depth. These are low-permeability exhibit sufficient fracture...
ABSTRACT The UK waste management industry remains committed to landfill as the principal means of disposal for a large proportion controlled wastes. Whilst development landfills above ground has been practised many years in certain countries overseas, concept only become more widely accepted during 1980s. It is vital that such sites are well planned, designed, operated, and restored. In particular, need be engineered, following key issues have addressed: (i) Site identification assessment;...
Abstract. With an Apple II microcomputer it is possible to rapidly generate and graphically compare theoretical time‐drawdown curves with field data from pumping tests in confined aquifers. This technique has the advantage over standard curve‐matching methods that any solution can be tested complete range of data.
Abstract In order to evaluate quickly and cost effectively the detailed shallow sub-surface geology of a 300 ha area in West Midlands, geophysical techniques were used conjunction with shell auger drilling. Since contains one largest landfill sites its type Europe is crossed by river which abstracted for drinking water within short distance downstream, it was important determine hydrogeology some detail. Previous geological surveys area, included drilling over 80 boreholes sand gravel...