HR: 1340h
AN: H53A-1230    [Abstracts]
TI: Evaluation of the Optimal Remediation Design in Heterogeneous Domain
AU: * Ko, N
EM: fuu@netian.com
AF: Seoul National University, School of Earth and Environmental Sciences, Seoul, 151-747 Korea, Republic of
AU: Lee, K
EM: kklee@snu.ac.kr
AF: Seoul National University, School of Earth and Environmental Sciences, Seoul, 151-747 Korea, Republic of
AB: In the problems of optimal remediation design in groundwater hydrology, hydraulic conductivity or transmissivity has significant influence on optimal design and its level of success. So, its heterogeneity may be important factor for optimal remediation design as well. In this study, probabilistic approaches are applied to the problem of groundwater remediation design to consider the risk of design and heterogeneity of real aquifers. To examine the effect of heterogeneity of hydraulic conductivity, optimal remediation design computed in simple base condition is evaluated for both homogeneous and heterogeneous domains. For homogeneous hydraulic conductivity field, Latin hypercube method is used. For heterogeneous field, random fields having same mean and variance with a certain spatial correlation are constructed. For both hydraulic conductivity fields, the optimal remediation design is evaluated in terms of remediation cost. To compare the results, cumulative distribution functions (CDFs) of relative costs are calculated. Results show that CDF has very wide range of cost and the influences of different penalty values are relatively significant for homogeneous case. For heterogeneous case, CDF shows narrow range and the influence of penalty values is hardly observed. This indicates that CDF can reflect on the risk of optimal solution in a simple example condition and be effective in estimating the cost of groundwater remediation including the penalty cost.
DE: 1829 Groundwater hydrology
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting