ISBN: 9781234848026

RareBooksClub. Paperback. New. Paperback. 50 pages. OCLC Number: 52590210 Excerpt: . . . should take vertical and lateral variability into account. Determination of hydraulic conductivi… More...

RareBooksClub. Paperback. New. Paperback. 50 pages. OCLC Number: 52590210 Excerpt: . . . should take vertical and lateral variability into account. Determination of hydraulic conductivity should thus be made at several different locations within the potential treatment zone, and the variation examined, rather than using average hydraulic conductivities and disregarding the variation. The number of hydraulic conductivity measurements should be consistent with the size of the potential treatment zone, and the potential for heterogeneity. It is also important to assess hydraulic conductivity in the units adjacent to the potential flushing operation for assessment of potential for natural containment, and for design of additional containment needs ( 2 ). Containment of the flushed contaminants and spent flushing solutions is essential to successful in situ flushing. Application is thus simplified when vertical and horizontal hydraulic application of gradients are low and or the treatment zone is bounded geologically by materials with relatively low hydraulic conductivity. Inversely, the presence of streams, lakes, seeps, or other ground-water discharge zones in near proximity to the treatment zone complicate application, because the presence of these systems do not facilitate hydraulic containment ( 9 ). This technology is most effectively applied when geologic materials exhibit moderate to high hydraulic conductivity, and are also relatively homogeneous. Ideally, hydraulic conductivity contrasts in the target media will be less than an order of magnitude within the area to be treated, and the material with the lower conductivity will be surrounded by material with higher hydraulic conductivity. Nonhomogeneous conditions will cause channeling and uneven treatment. Flushing additive movement through material of lower hydraulic conductivity may occur through the slower process of diffusion rather than bulk transfer. The feasibility of in situ flushing depends upon the details of the distribution of primary and secon. . . This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN., RareBooksClub<

ISBN: 9781234848026

Rarebooksclub.com. Paperback. New. This item is printed on demand. Paperback. 50 pages. OCLC Number: 52590210 Excerpt: . . . should take vertical and lateral variability into account. D… More...

Rarebooksclub.com. Paperback. New. This item is printed on demand. Paperback. 50 pages. OCLC Number: 52590210 Excerpt: . . . should take vertical and lateral variability into account. Determination of hydraulic conductivity should thus be made at several different locations within the potential treatment zone, and the variation examined, rather than using average hydraulic conductivities and disregarding the variation. The number of hydraulic conductivity measurements should be consistent with the size of the potential treatment zone, and the potential for heterogeneity. It is also important to assess hydraulic conductivity in the units adjacent to the potential flushing operation for assessment of potential for natural containment, and for design of additional containment needs ( 2 ). Containment of the flushed contaminants and spent flushing solutions is essential to successful in situ flushing. Application is thus simplified when vertical and horizontal hydraulic application of gradients are low and or the treatment zone is bounded geologically by materials with relatively low hydraulic conductivity. Inversely, the presence of streams, lakes, seeps, or other ground-water discharge zones in near proximity to the treatment zone complicate application, because the presence of these systems do not facilitate hydraulic containment ( 9 ). This technology is most effectively applied when geologic materials exhibit moderate to high hydraulic conductivity, and are also relatively homogeneous. Ideally, hydraulic conductivity contrasts in the target media will be less than an order of magnitude within the area to be treated, and the material with the lower conductivity will be surrounded by material with higher hydraulic conductivity. Nonhomogeneous conditions will cause channeling and uneven treatment. Flushing additive movement through material of lower hydraulic conductivity may occur through the slower process of diffusion rather than bulk transfer. The feasibility of in situ flushing depends upon the details of the distribution of primary and secon. . . This item ships from La Vergne,TN., Rarebooksclub.com<