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1 calibration range. The acceptance criteria is that none of the target compounds will be present in <br /> either the ambient or the equipment blank. <br /> 2.2.3 Decontamination <br /> To minimize the potential for cross-contamination between sampling locations, all external probe <br /> parts will be cleaned of excess dirt and moisture prior to insertion. The internal nylaflow tubing <br /> and sampling ports will be flushed with ambient air between samples. If water or dirt is observed <br /> in the tubing, the tubing will be replaced. If VOCs are detected at total hydrocarbon concentrations <br /> exceeding 50 ppb, the tubing will be replaced. <br /> 1 <br /> r <br /> r <br /> 1 <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br />