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TO E RO E K SOP No.004,REv.2 AssoclATEs,INC SOIL SAMPLING I PAGE 5 The following procedures outline the necessary steps for collecting soil samples to be preserved at the laboratory, and for collecting soil samples to be preserved in the field with methanol or sodium bisulfate. 2.1.1.1 Soil Samples to be preserved at the Laboratory Soil samples collected for VOC analysis that are to be preserved at the laboratory shall be obtained using a hand-operated, hermetically sealed sample vial such as an EnCoreTM sampler. Each sample shall be obtained using a reusable sampling handle ("T" handle) that can be provided with the EnCoreTM sampler when requested and purchased. Collect the soil sample in the following manner for each EnCoreTM sampler. The EnCoreTM sampler is loaded into the "T" handle with the plunger fully depressed. Press the "T" handle into the soil to be sampled. The plunger will be forced upward as the cavity fills with soil. When the sampler is full, using the "T" handle, rotate the plunger and lock it into place. If the plunger does not lock, then it is not filled with soil. Soft soil may require several plunges or forcing soil against a hard surface such as a decontaminated sample trowel to ensure headspace has been eliminated. Remove soil from the outside of the sampler so a tight seal can be made between the sample cap and the 0-ring. With soil slightly piled above the rim of the sampler, force the cap on until the catches hook the side of the sampler. Remove any surface soil from outside of the sampler and place in the foil bag provided with the sampler. Label the bag with sample location information. Typically, collect three EnCoreTM samplers per sample location. Decontaminate the"T"handle between sample locations. Using the EnCoreTM sampler eliminates the need for field preservation and the shipping restrictions associated with preservatives. A complete set of instructions is included with each EnCoreTM sampler. After the EnCoreTM samples are collected, they should be placed on ice immediately and delivered to the laboratory within 48 hours. The samples must be preserved by the laboratory within 48 hours of collection.