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3d. Purging <br /> ' • The volume of standing water in each monitoring well was calculated using the <br /> diameter of the well, the measured depth-to-water and the depth-to-bottom The <br /> volume was recorded on the Well Sampling Data Sheet for each well <br /> ' • The wells were purged using an ES-60 purger pump attached to 40-feet of plastic <br /> tubing <br /> • Conductivity, pH, temperature, and ORP were monitored using the Ultrameter at each <br /> ' well casing interval throughout the purging process Visual observations of <br /> color/odor/turbidity were also monitored <br /> • The time, readings, and visual comments were recorded on the Well Sampling Data <br /> ' Sheet <br /> • Each well was purged of at least three well volumes and until the indicator parameters <br /> stabilized <br /> ' • Purge and decontamination water was transferred to a 55-gallon drum labeled and <br /> stored on site <br /> ' 3e. Groundwater Sample Collection <br /> Groundwater samples were collected by lowering previously unused, disposable, <br /> polyethylene, bottom-filling bailers into the well <br /> When completely full,the bailer was carefully retracted from the well casing <br /> The water was transferred from the bailer to the appropriate certified clean sampling <br /> containers <br /> • Each VOA was immediately capped The vial was checked for air bubbles by <br /> ' inverting and gently tapping If any bubbles were visible, a new vial was filled and <br /> confirmed to be free of any air bubbles <br /> • All samples were labeled with the following information <br /> ' Sample ID Date and Time Sample Collected <br /> Location Sampler's Initials <br /> Project Number <br /> ' • Sample information was documented on a Chain-of-Custody form <br /> All samples were placed in an ice chest chilled with ice <br /> • Upon completion of the sampling activities, each well was closed and secured by <br /> ' replacing the well cap and lock <br /> 4. Equipment Used: <br /> ' Disposable gloves <br /> Potable water <br /> ' Alconox soap <br /> Containers to hold rinsate water <br /> • Scrub brushes <br /> Tools to open wells <br /> • Keys to wells <br /> • Water Level Data Form/ Pencil <br /> • Well Sampling Data Sheets <br /> • Water level meter <br /> ' 2 of 3 <br />