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TO E RO E K SOP No.004,REv.2 AssoclATEs,INC SOIL SAMPLING PAGE 9 Sampling Effective Depth Range Operating Equipment feet bgs) Means Sample Type EnCoreTM Sampler Not Applicable Manual Disturbed Spoon/Spatula 0 to 0.5 Manual Disturbed Trowel 0 to 1 Manual Disturbed VOA Plunger Not Applicable Manual Disturbed The procedures for using these various types of sampling equipment are discussed below. 2.3.1 Hand Auger A hand auger equipped with extensions and a "T" handle is used to obtain samples from depths of up to 6 feet bgs. If necessary, a shovel may be used to excavate the topsoil to reach the desired subsoil level. If topsoil is removed, its thickness should be recorded. Samples obtained using a hand auger are disturbed in their collection; determining the exact depth at which samples are obtained is difficult. The hand auger is screwed into the soil at an angle of 45 to 90 degrees from horizontal. When the entire auger blade has penetrated soil, the auger is removed from the soil by lifting it straight up without turning it,if possible. If the desired sampling depth has not been reached, the soil is removed from the auger and deposited onto plastic sheeting. This procedure is repeated until the desired depth is reached and the soil sample is obtained. The auger is then removed from the boring and the soil sample is collected directly from the auger into an appropriate sample container. 2.3.1 Bucket Auger A bucket auger, equipped similarly as the hand auger, is used to obtain disturbed samples from depths of up to 4 feet bgs. A bucket auger should be used when sampling stony or dense soil that prohibits the use of a hand-operated core or screw auger. A bucket auger with closed blades is used in soil that cannot generally be penetrated or retrieved by a core sampler.