Groundwater Sampling

The objective of any groundwater sampling program is to collect and analyze samples that are representative of existing groundwater conditions at the site. This goal is achieved with a sampling plan that incorporates sampling procedures designed to minimize sources of error or misrepresentation in each stage of the sampling process. The key stages of sampling involve well purging, sample collection and pretreatment, sample handling and preserva tion, and analysis and reporting of analytical data. A brief description of these sampling stages follows. Figure 9.15.4 presents a generalized flow diagram of groundwater sampling protocol.

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