Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Approach for Evaluating the Progress of Natural Attenuation in Groundwater.
Author J. T. Wilson
CORP Author National Risk Management Research Lab., Ada, OK.
Year Published 2011
Report Number EPA/600/R-11-204
Stock Number PB2012-109455
Additional Subjects Natural attenuation ; Water pollution monitoring ; Ground water ; Progress evaluations ; Aquifers ; Data analyses ; Regression analysis ; Statistical analysis ; Performance monitoring ; Recommendations ; Phase analyses ; Figures ; Tables (Data) ; Plume behavior ; Contaminant exposures ; Monitored Natural Attenuation (MNA) remedies ; Geohydrological frameworks
Library Call Number Additional Info Location Last
NTIS  PB2012-109455 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 10/24/2012
Collation 84p
Monitored Natural Attenuation (MNA) remedies monitor the results of natural processes and utilize these data to predict future conditions in the aquifer. Performance monitoring to evaluate MNA effectiveness is a critical element for MNA remedies. Monitoring over time insures that the future behavior of the plume is consistent with past behavior and that the risk of exposure to the contaminants is managed. The trend of contaminant concentrations over time in a particular well can be used to forecast the future concentrations in that well and predict when concentrations will attain a selected concentration level. The purpose of this document is to present a simple, statistically based approach for evaluating the progress of natural attenuation from the data collected during site characterization and long term monitoring. The intended audience is technical professionals that actually perform the data analyses (i.e., hydrogeologists, engineers) as well as project managers who review those analyses and/or make decisions based on those analyses.