... The management of sediments contaminated with polychlorinated biphenyls (PCBs) is an issue of significant contemporary concern. The application of an in situ cap to isolate and contain the contaminants is a desirable management option that is hindered by a lack of detailed information regarding...

... Electrokinetic technique has been used in sedimentation at mining applications as a volume reduction for slurry tailing wastes. This technique has been used in remediation for environmental application as a potential in-situ remediation method for contaminated soils and wastes. Thus...

... macroinvertebrate biodiversity in Chesapeake Bay over several time periods between 1987–2001. These models were subsequently compared to monitoring data for sediment contaminant concentrations and physical/chemical water quality conditions. A series of GIS exercises demonstrated that low values for species...

... Much work needs to be done to improve and develop techniques for contaminant studies with post-metamorphic, terrestrial amphibians. Evaluations also should be made of the impacts of multiple Stressors, because single-factor studies may underestimate environmental stress. Habitat contamination...

... residues than the corresponding inside patches in all three suits, suggesting that the protective clothing fabrics functioned as a barrier to the paniculate contaminants of atrazine. The residues extracted from the outside patches differed significantly by job functions for all three suits. The total...

... The Multiport Sampler (MPS) was developed to overcome current cone penetrometer sampling limitations. The MPS was specifically designed to obtain multiple fluid (gas, vapor, and/or liquid) samples during a single penetration while minimizing sample cross-contamination from each sampling cycle...

... In many areas of the world, contaminated sediments are being considered a major factor in the redistribution of toxic chemicals in the environment. While removal of contaminated sediments from the aquatic environment is often the preferred alternative for reducing the potential impacts...

... Contaminants from sediments contained within a confined disposal facility (CDF) can be discharged to the environment via six potential pathways. These pathways include three waterborne pathways, the direct uptake of the contaminants by plants or animals, and airborne emission of contaminants...

... Soil-bentonite slurry cutoff walls (SBSCWs) have been used for decades by geotechnical engineers in conjunction with soil excavation to control ground water movement. In recent years, soil-bentonite slurry cutoff walls have been increasingly used as containment barriers around contaminated soils...

... of contaminants in buildings. The program enabled simultaneous dynamic simulations of contaminant distribution, airflows, and temperatures in a multizone building. Using the new program, the dynamic distributions of contaminant concentration and air quality in an example building were determined with and without...

... of other environmental alterations on the long-term population central tendencies of whole communities. contaminant disturbance food chains interaction assessment population cleanup biological community toxicants pesticides John M. Emlen ~ Interaction Assessment II1" Predicting Population...

.... The bioassay is appropriate for estimating mobility of contaminants into the environment through plant uptake in wetland, marsh environments as well as drier agricultural-type upland conditions. plant bioassay heavy metal contaminant sediment wetland upland freshwater marsh Bobby L. Folsom, Jr...

... of the contaminantions. The modeling thereof for transport will be reflected through the corresponding variable dispersion coefficients. KEY WORDS: hydrodynamic migration, chemico-osmotic, leaching, dispersion-convection, diffusion-advection, dispersion coefficients, contaminant, seepage velocity, hydraulic conductivity...

...%. Evidence is presented that the DUSTRON can distinguish one type of filtration surface from another and one type of filter medium from another. filtration test flat sheet penetration contaminant face velocity terminal pressure James E. Moulton III, James C. Wilson, Sr. THE DUSTRON...