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• GEOSTRATEGIES <br /> FIELD METHODS AND PROCEDURES <br /> VES Vapor Stream Sam le Collection <br /> Influent and effluent vapor stream samples are collected by connecting the sample bag to the <br /> sampling port via clean tygon tubing The sample bag is then placed inside the air sampling <br /> container, which is attached to an air pump To obtain a sample from the VES vapor <br /> stream, the air pump is activated, inducing a vacuum inside the sample container The <br /> induced vacuum allows the sample bag to inflate by drawing an air sample from the VES <br /> vapor stream via the sample port and tubing Once the sample bag is full, it is placed in a <br /> separate container to protect it from sunlight, and delivered to the laboratory for analysis <br />• <br />• <br /> A-1 <br />