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