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i Samples may be collected using direct push technology Samples will be collected <br /> in acetate tubes at specified depths using an open probe tip <br /> Soil samples for chemical analysis will be collected in brass or stainless steel <br /> liners, sealed with Teflon® tape and plastic end caps, labeled, placed on ice, and <br /> ' delivered to a state-certified analytical laboratory, along with the appropriate chain- <br /> of-custody documentation Soil samples selected for chemical analysis will be <br /> determined from a head-space analysis using a hand-held photo-ionization <br /> ' detector (PID) The sod will be placed in a glass far, sealed, and placed in a warm <br /> atmosphere After approximately 15 minutes, which is generally sufficient for <br /> volatiles to escape from the soil, the PID probe will be inserted into the glass far <br /> ' The total volatile hydrocarbons present are detected by the PID and reported in <br /> parts per million The PID will be calibrated to any isobutylene standard <br /> ' Generally two soil samples from each soil boring will be submitted for chemical <br /> analysis Soil samples selected for analysis typically represent the highest PID <br /> reading recorded for each soil boring and the sample dust above first-encountered <br /> 1 groundwater <br /> 1 <br /> 1 <br /> i <br /> i <br /> 1 <br /> i a B-2 <br /> 1 <br />