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When transferring the sampling fluid from the sampling container to a VOA vial, <br /> the fluid must be poured slowly and smoothly to produce a meniscus over the lip of the <br /> vial. The screw-top lid with the Teflon septum is then tightened onto the vial, and the <br /> vial turned upside down and gently tapped to check for the presence of air bubbles. If <br /> air is trapped in the vial, i.e. head space is present, the sample must be retaken. VOA <br /> samples should not be taken near any exhaust systems which may cause contamination of <br /> the sample. <br /> The sample should tagged and chilled to approximately 4°C in a cooler and sent <br /> to a certified analytical laboratory. <br /> 2. Semi-Volatile Organics <br /> Samples for semi-volatile organics should be collected after those for volatile <br /> organics. The method of collection is the same as that described for volatiles. After the <br /> fluid is collected, it should be transferred to a pre-labeled, one-liter amber glass bottle <br /> with a Teflon septum. The sample must be tagged and chilled to approximately 4°C for <br /> shipping to the analytical laboratory. <br /> 3. Metals <br /> Samples for total metals should be taken after those for volatile and semi-volatile <br /> organics. After collection, the sample is transferred to a one-liter, polyethylene, certified) <br /> metal-free bottle and the unfiltered sample is acidified with 1:1 redistilled HNC3 to a pH <br /> of less than 2 at the time of collection. Do not add HNO3 to samples that will be <br /> analyzed for mercury or those that will be prepared using the TCLP. <br /> 4. Total Petroleum Hydrocarbons (TPH) <br /> Use collection methods described for sampling for volatile organics. If sampling <br /> for TPH as gasoline, the fluid should be transferred to two pre-labeled 40-ml vials with <br /> Teflon septa (as described for volatile organics). If sampling for TPH as Diesel, the <br /> fluid should be transferred using a funnel to a pre-labeled, one-liter glass bottle with a <br /> Teflon septum. Preserve the sample by adding hydrochloric acid (HCl) to a pH of less <br /> than 2. The sample must be tagged and chilled to 4°C for shipping to the analytical <br /> laboratory. <br /> 5. Total Recoverable Petroleum Hydrocarbons (TRPH) <br /> Use the collection methods described for volatile organics. The fluid should be <br /> 24 <br />