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FiFLD PROCEMURF4 <br /> The following section describes field procedures that were completed by Delta personnel:,Y the performance <br /> of the tasks involved with this proiect. <br /> 1.0 QUARTF-RIN GROUND WATER SAMPI.1NG <br /> 1.1 Ground Water and Free-Floating Product Ile ih naterminstion <br /> A water/petroleurn product in!erface probe was used to determine free product thickness and ground water <br /> depth in each well. If a free-floating layer was not detected by the interface probe,the tip of the <br /> probe was subjectively analyzed for product sheen. <br /> ,1.2Sublective Analysis or Ground WF-ter <br /> Prior to purging of ground water monitoring wells,a water sample was collected from each monitoring well <br /> for subjective analysis. The retrieving of the sample involved gently lowering a clean,disposable Tc:lon <br /> bailer to approximately one-half the bailer length past the air/liquid interface. Tito bailer wa_.hen retrieved, <br /> and the sample contained within the bailer was examined for floating product levels and appearance of a <br /> pctrolcum product sheen. <br /> 1.3 Monitoring Well Pursing and Sampling <br /> ,....� Monitoring wells were u." e' using a centrifugal pump capable of producing aFFroximaie: <br />