Methods for Minimization of Variability in Long-Term Groundwater Monitoring Results

摘要

Background/Objectives. Variability in groundwater monitoring data can be due to a variety of factors that may be unrelated to the long-term effects of natural contaminant attenuation or site remediation. Inaccuracy of these long-term trends delays proper data interpretation and decision making, and may result in incorrect conclusions regarding plume stability or remedy effectiveness. The overall objective of this ESTCP demonstration project is to validate sample collection methods and procedures that minimize variability in groundwater monitoring and results. For this purpose, the demonstration compares monitoring results obtained using standard current low-flow sampling procedures to the results obtained using improved low-flow sampling procedures and the use of two passive sampling technologies that are increasing in popularity.