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FIELD PROCEDURES <br /> FOR <br /> DRILLING,SOIL SAMPLING,AND TEMPORARY GROUNDWATER MONITORING <br /> WELL INSTALLATION <br /> (Continued) <br /> To ensure that the groundwater samples were representative of the aquifer, the temporary wells <br /> were purged of up to 5 gallons of groundwater using a peristaltic pump,while monitoring <br /> stabilization of pH,electrical conductivity, and temperature. <br /> Groundwater samples were collected from the temporary wells using the peristaltic pump,with <br /> new sample and flexible tubing used for each sample,and transferred into laboratory-supplied <br /> containers. The samples were labeled with the well number,site identification, date of <br /> collection and sampler's initials, and transported in an iced cooler to a state-certified laboratory <br /> following preservation and chain of custody protocol. The sampling technician wore nitrile <br /> gloves during purging and well sampling. <br />