OLS : Record


Main Title Development of a data evaluation/decision support system for remediation of subsurface contamination /
Author Eisenberg, Freddi.; McLaughlin, D. B.
CORP Author Massachusetts Inst. of Tech., Cambridge. Ralph M. Parsons Lab.;Environmental Protection Agency, Washington, DC. Office of Research and Development.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Place Published Washington, D.C.
Year Published 2001
Report Number EPA/600/R-01/044
Stock Number PB2002-101966
OCLC Number 49573057
Subjects Remediation; Literature reviews; Problem formulations; Estimation equiations; Measurement strategies; Ground water; Chemicals; Data evaluation; Decision support systems; Subsurface contamination
Subject Added Ent Hazardous waste site remediation.; Groundwater--Pollution--Measurement.; Soil pollution--Measurement.
Internet Access
Description Access URL
Library   Call Number Additional Info Location Date Modified
EIAD EPA/600/R-01/044 Region 2 Library/New York,NY 04/26/2002
EJAD EPA 600/R-01-044 Region 3 Library/Philadelphia, PA 04/12/2002
EJBD ARCHIVE EPA 600-R-01-044 Headquarters Library/Washington,DC 03/13/2009
EJBD EPA 600-R-01-044 c.1-2 Headquarters Library/Washington,DC 07/15/2009
EKAM 600-R-01-044 Region 4 Library/Atlanta,GA 05/23/2003
ELBD EPA 600-R-01-044 AWBERC Library/Cincinnati,OH 04/26/2010
EMBD EPA/600/R-01/044 GWERD Library/Ada,OK 05/17/2002
ENAD EPA/600/R-01/044 2 copies Region 7 IRC Library/Kansas City,KS 04/19/2002
EOAD EPA/600/R-01/044 Region 8 Technical Library/Denver,CO 05/03/2002
ERAD EPA 600/R-01-044 HWC Region 9 Library/San Francisco,CA 04/11/2003
ESAD EPA 600-R-01-044 Region 10 Library/Seattle,WA 10/31/2003
NTIS PB2002-101966 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation xi,55 p. : col. ill. ; 28 cm.
Abstract Subsurface contamination frequently originates from spatially distributed sources of multi-component nonaqueous phase liquids (NAPLs). Such chemicals are typically persistent sources of ground-water contamination that are difficult to characterize. This work addresses the feasibility of using dissolved concentration measurements to estimate the spatial distribution of each component of an immobile (or residual) NAPL mixture in a saturated field-scale system. We pose the characterization process as a state estimation problem.The estimated states are the dissolved contaminant concentrations and the NAPL saturations. These states vary with time and space. The time-dependence of solute concentrations originating from competitive dissolution is, in fact, an important source of information for the estimation process. The estimated parameters are the mass transfer rate coefficients that govern the transfer of constituents between the NAPL and dissolved phases. In the present analysis, we assume that all other states (hydraulic head, organic matter distribution coefficient) and parameters (hydraulic conductivity, dispersion coefficients, specific storage) are known and certain (not random variables). The state equations used in the estimation process account for competitive dissolution from a multi-component source, ground-water flow in a heterogeneous medium, and dissolved phase contaminant transport. We assume mass exchange of the NAPL constituents among the dissolved, sorbed, and NAPL phases. Dissolution at the local scale is assumed to be at chemical equilibrium. However, we represent this process at the field scale with a first order kinetic model. A linear measurement equation relates dissolved concentration measurements to the estimated states and parameters. This equation includes an additive Gaussian error term.
Notes "July 2001." Includes bibliographical references (p. 53-55). "EPA/600/R-01/044."
Supplementary Notes This document is color dependent and/or in landscape layout. It is currently only available on CD-ROM. Sponsored by Environmental Protection Agency, Washington, DC. Office of Research and Development.
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Access Notes Also available from Internet via the GPO Access web site. Address as of 9/28/02: http://www.epa.gov/ada/download/reports/epa600r01044.pdf; current access is available via PURL.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Research and Development.
PUB Date Free Form 2001
NTIS Prices AV A05
BIB Level m
OCLC Time Stamp 20100419125545
Cataloging Source OCLC/T
Language eng
SUDOCS Number EP 1.2:2002010607
Origin OCLC
Type CAT
OCLC Rec Leader 01478cam 2200361 a 45020