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PERFORMANCE MONITORING FOR NATURAL ATTENUATION REMEDIES IN GROUND WATER
Citation:
Pope, D., K. L. Hurt, B. H. Wilson, S Acree*, H. Levine*, S Mangion*, AND J J. van Ee. PERFORMANCE MONITORING FOR NATURAL ATTENUATION REMEDIES IN GROUND WATER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-04/027, 2004.
Impact/Purpose:
Information
Description:
Environmental monitoring is the major component of any remedy that relies on natural attenuation processes. The objective of this document is to identify data needs and evaluation methods useful for designing monitoring networks and determining remedy effectiveness. Effective monitoring of natural attenuation processes generally requires a three-dimensional approach to network design and clearly defined performance criteria based on site-specific remedial action objectives. Objectives for the monitoring program generally will be met through routine measurements of contaminant, geochemical, and hydrologic parameters. These data are used to evaluate changes in three-dimensional plume boundaries, contaminant mass and concentration, and hydrological and geochemical changes indicative of impacts to remedy performance. Decisions regarding remedy effectiveness and the adequacy of the monitoring program will generally result in either continuation of the program, program modification, or modification of the remedy. Such decisions should be based on specific, quantifiable performance criteria documented in the monitoring plan.