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Contaminated ground conditions

Ozonization of benzo[< pyrcnc in dodecane/water emulsions (conditions modeling those in contaminated ground-water or industrial wastewater) is shown to yield an ozonide and an oxepinone <2001MI231>. [Pg.70]

Period of vital functions of bacteria under slow contamination is taken 200 days, under mass infection (natural or man-caused disaster) or continuous contaminant spill conditions it is taken 400 days. Six categories of ground water vulnerability to bacteriological contamination have been distinguished (Table 3) ... [Pg.47]

Data from field and laboratory studies of creosote-contaminated ground water are being analyzed by the U S. Geological Survey to determine the transformation pathways of selected organic compounds, assess the relative importance of physical, chemical, biochemical, and microbial processes in the transformation of these compounds under ambient conditions, and study relevant biotransformation processes occurring in the subsurface ground water. [Pg.287]

Chapelle, F. H. (1996) Identifying redox conditions that favour the natural attenuation of chlorinated ethenes in contaminated ground water systems. In Proceedings of Symposium on Natiual Attenuation of chlorinated Organics in Ground Water, Dallas, Texas, Sept.1996, EPA/540/R-96/509,pp.l7-20. [Pg.253]

Drilled shaft foundations are the most versatile types of foundations. The length and size of the foundations can be tailored easily. Disturbance to the nearby structures is small compared with other types of deep foundations. Drilled shafts can be constructed very close to existing structures and can be constructed under low overhead conditions. Therefore, drilled shafts are often used in many seismic retrofit projects. However, drilled shafts may be difficult to install under certain ground conditions such as soft soil, loose sand, sand under water, and soils with boulders. Drilled shaft will generate a large volume of soil cuttings and fluid and can be mess. Disposal of the cuttings is usually a concern for sites with contaminated soils. [Pg.244]

Porous concrete should maintain sufficient strength and durability under the conditions of root penetration into voids, the influence of freezing-thawing cycles, the development of microorganisms and bacteria, the influence of contaminated ground water, etc. In the case of road overlays, resistance... [Pg.62]

Planning permission can be refused if the land contamination issues are not fully addressed or if sufficient information on the ground conditions has not been provided... [Pg.8]


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Ground conditions

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